Manuale d’uso / di manutenzione del prodotto 8260 del fabbricante IBM
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International Technical Support Organization 8260 Multiprotocol Intelligent Switching Hub May 1995 GG24-4370-00.
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International Technical Support Organization 8260 Multiprotocol Intelligent Switching Hub May 1995 GG24-4370-00 IBML.
Take Not e! Before using this information and the product it supports, be sure to read the general information under “Special Notices” on page xv. First Edition (May 1995) This edition applies to the 8260 Multiprotocol Intelligent Switching Hub family.
Abstract This document describes the IBM 8260 Multiprotocol Intelligent Hub. It provides information about the 8260 architecture as well as how to install, configure and manage the 8260 Ethernet and token-ring media modules. This document was written for customers, systems engineers, network professionals and technical support personnel.
iv 8260 Multiprotocol Intelligent Switching Hub.
Contents Abstract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii Special Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv Preface . . . . . . . . . . . . . . . . . . . . . .
4.4.1 Ethernet MAC Daughter Card (E-MAC) .................. 64 4.4.2 Token-Ring MAC Daughter Card (T-MAC) ................ 66 4 . 5 Managing 8260 Using DMM and 8250 xMM .................. 69 4.5.1 Managing 8260 with DMM .......................... 70 4.
8 . 4 Jitter Attenuator Daughter Card (JADC) ................... 141 8 . 5 Passive Port Technology ............................ 142 8 . 6 Active Port Technology ............................. 142 8.6.1 Per-Port Switching on the Active Modules .........
10.6.3 SHOW COUNTER Command for Ethernet Networks ......... 215 10.6.4 Collecting and Displaying RMON Groups Using E-MAC ....... 218 10.6.5 SHOW COUNTER Command for Token-Ring Networks ....... 222 10.6.6 Collecting and Displaying RMON Groups Using T-MAC .
Figures 1. I B M 8260 Model 0 1 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 . Components o f the 8250 Adapter Kit . . . . . . . . . . . . . . . . . . . . . 5 3 . Enhanced TriChannel B us ............................ 14 4. 8260 S h u n t B u s .
5 2 . Installing 8260 Modules in an 8260 Not Managed by DMM ........ 83 5 3 . Installing 8250 Modules in an 8260 Managed by DMM ........... 84 5 4 . Installing 8250 Modules in an 8260 Not Managed by DMM ........ 85 5 5. Messages Received when a Power Failure Occurs .
106. Trunk Wrapping in Active Per-Port Switching Module .......... 169 107. Trunk Wrapping in Active Per-Port Switching Module .......... 169 108. Front View of 18-Port Active Per-Port Switching Module ......... 175 109. 18-Port Active Per-Port Switching Module Side View .
161. LMS IP Panel .................................. 279 162. LMS IP Port Address Table Panel ...................... 280 163. LMS IP System Parameters Panel ...................... 281 164. LMS IP Port Parameter Panel ........................ 283 165. LMS IP Forwarding Table Panel .
Tables 1 . Components of the 8250 Adapter Kit for 8260 . . . . . . . . . . . . . . . . 6 2 . Ethernet Pins on the 8260 Backplane . . . . . . . . . . . . . . . . . . . . . 17 3. 8260 controller Module L E D Meaning . . . . . . . . . . . . . . . . . . .
xiv 8260 Multiprotocol Intelligent Switching Hub.
Special Notices This publication is intended to help both IBM Customers and IBM System Engineers to install and configure the IBM 8260 Multiprotocol Intelligent Switching Hub. It contains description of the 8260 architecture as well as information about how to install, configure and manage the the 8260 Ethernet and token-ring modules.
The following terms in this publication, are trademarks of other companies: Windows is a trademark of Microsoft Corporation. PC Direct is a trademark of Ziff Communications Company and is used by IBM Corporation under license.
Preface This document is intended to assist customers and IBM system engineers to implement local area networks based on the IBM 8260 Multiprotocol Intelligent Switching Hub. It contains description of the 8260 architecture as well as information about how to install, configure and manage the the 8260 Ethernet and token-ring modules.
This appendix provides information about the power requirements of the 8250 modules. Related Publications The publications listed in this section are considered particularly suitable for a more detailed discussion of the topics covered in this document.
Acknowledgments The advisor for this project was: Mohammad Shabani International Technical Support Organization, Raleigh Center The authors of this document are: Mohammad Shabani International Technic.
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Chapter 1. An Overview of the IBM 8260 Hub This chapter is an introduction to the IBM 8260 Multiprotocol Intelligent Switching Hub. It is intended to provide the reader with an overview of the followi.
• One power supply • One power supply bay cover • One AC power cord • Three fan units • One cable tray • One rack mount kit • One rubber feet kit • Six blank dual-slot filler plates .
1.2 8260 Hardware Description There are three models of the 8260: • 8260-017 • 8260-010 • 8260-17A 1.2.1 IBM 8260 Model 017 The 8260 Model 017 is a 17-slot module which allows you to install any combination of 8260 and 8250 modules (except the 8250 Controller module) to set up token-ring, Ethernet and/or FDDI networks.
Figure 1. IBM 8260 Model 0 1 7 1.2.1.2 Payload Area The payload area provides the housing for 17 media and management modules. In addition to the 8260 module, you may install all the 8250 modules (except the Controller module) in an 8260. Once these modules are installed on the 8260, they will be connected to the backplane.
• Right Boundary Adapter: This adapter is a full length adapter and occupies one slot. Installation of this adapter results in 16 slots remaining available in the 8260 for the installation of media and management modules. It i s recommended that you install this adapter in slot 17.
Table 1. Components of the 8250 Adapter Kit for 8260 Adapter kit Component 4- sl o t Feature 9- sl o t Feature 16-slot Feature Left Boundary Adapter 1 1 1 Right Boundary Adapter 1 1 1 Dual-Slot Top Filler 1 3 7 Single-Slot Top Filler 1 2 1 Dual-Slot Module Ejector Blocks 4 9 16 8250 Module Blank Faceplate 3 8 15 1.
1.2.2 The Intelligent Cooling Subsystem The cooling subsystem consists of 3 fans, each of which cools a specific area of the hub. Each of the fans has a sensor to detect a slow or stopped condition and a temperature sensor to detect an over temperature condition.
• Model 010 is shorter than the Model 017 (498 mm versus 673 mm), but has the same depth and width. • Power supplies in the Model 010 are housed on the left side of the chassis whereas in the Model 017 they are housed in the bottom section. The 8260 Model 010 shares with the Model 017 all of the following benefits: • Supports three fan units.
1.3.1.2 8260 Ethernet 20-Port 10Base-T Module The 8260 Ethernet 20-port 10Base-T module is single-slot module which provides 20 RJ-45 connectors for supporting 20 Ethernet ports.
1.3.2.2 8260 TR 18 Port Active Module Switching Module The 8260 TR 18 Port Active Module Switching module is a single-slot module which provides attachment of up to 18 workstations to one of the 10 token-ring segments on the ShuntBus using both STP and UTP cables.
1.3.3.2 8260 Fault-Tolerant Controller module The 8260 Fault-Tolerant Controller Module synchronizes the operations of all installed media and management modules by providing clocking and timing to the 8260 Multiprotocol Intelligent Hub Backplane. The Controller module is also responsible for managing the power and cooling subsystems.
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Chapter 2. Backplane Architecture The 8260 backplane consists of the following two buses: • Enhanced TriChannel • ShuntBus These two buses are standard features of all the 8260 models and are installed on every 8260 shipped to the customers.
Figure 3. Enhanced TriChannel Bu s The number of pins available for user traffic on the ShuntBus is 72 pins. These pins are used to set up 2 dedicated Ethernet segments as well as 10 token-ring (or 4 FDDI) segments as shown in Figure 4 on page 15 .
Figure 4. 8260 ShuntBus 2.2 Ethernet Segments on the Backplane The 8260 allows you to set up a maximum of 6 Ethernet (ethernet_1 thru 6) segments on the Enhanced TriChannel and two Ethernet segments (ethernet_7 and 8) on the ShuntBus.
SET MODULE {slot.sublsot} NETWORK {ethernet_n} or SET PORT {slot.port} NETWORK {ethernet_n} Before assigning the port or module to a network you may use the following management command to display the.
segments ethernet_4, ethernet_5 and ethernet_6 on the Enhanced TriChannel and ethernet_7 and ethernet_8 on the ShuntBus. • Method 2: This method also uses 14 pins on the backplane to set up an Ethernet segment. In this method, each module attached to that Ethernet segment will use digital collision detection identical to that used in method 1.
The following is a brief description of the use of each of the pins in an Ethernet segment on the 8260 backplanes: • Data enable signal : When this signal is active, data on the backplane is valid and the modules should receive and process the data on the ′ Data in NRZ Format ′ pin.
This pin is used to provide a means of detecting collisions of the segments using method 3. Analog collision detection is described in 2.2.2, “Analog Collision Detection” on page 1 9 . 2.2.1 Digital Collision Detection Collision detection on the backplane (for methods 1 and 2) is done by using slot-id information transmitted on the backplane.
• Data-in • Clock-in • Data-out • Clock-out When you assign an 8250 token-ring module to one of the token-ring networks on the Enhanced TriChannel (tr_8250_1 through tr_8250_7) using the following command: SET MODULE {slot.
the token-ring paths marked as ″ available ″ are the parts of the Enhanced TriChannel that are not currently used by any type of network. On the ShuntBus, in addition to the two dedicated Ethernet segments, there are 10 token-ring segments. Unlike, the Enhanced TriChannel, there is no concept of token-ring paths on the ShuntBus.
• Data B transmit • Clock receive • Data A receive • Data B receive The reasons for two signals for each of the transmit and receive signals is given in 8.
An example of the output from this command is shown in Figure 8 on page 2 3. 8260> show backplane_paths fddi Physical Path Logical Network --------------- --------------- FDDI_PATH_8250_1 i.
• Any module can plug into any slot and all allocation of modules to networks or channels, regardless of whether they are TriChannel or Shunt Bus, is done by electronic switching (via DIP switches on the modules or management module commands).
Using Figure 10 on page 25 you can see that if, for example, fddi_1 network on the ShuntBus is used, it eliminates token_ring_1, token_ring_2 and token_ring_3. Also, you can see that the use of Ethernet segments ethernet_7 and ethernet_8 have no affect on the availability of token-ring and FDDI segments.
Figure 11. The Backplane Relationship between TriChannel and ShuntBus 2.5.1 Management Buses It was mentioned earlier that 42 of the 96 pins on the TriChannel Backplane are reserved for non-data traffic. Included in these pins are the Management LAN (MLAN) and the Serial Control Interface (SCI).
the MAC daughter card is accessed by the upper layer protocol stacks within the DMM (SNMP, Telnet) through the MLAN. The E-MAC can be installed on either the EC-DMM or the 8260 media modules.
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Chapter 3. 8260 Fault Tolerant Controller Module The 8260 Fault Tolerant controller module is a critical component of the 8260. One active controller module is always required in order to keep the 8260 hub operational and running.
3.1.1 The Controller Module Front Panel Figure 13. Front View of th e Controller Module Figure 13 shows the front view of the controller module. Besides the hub reset and the LED test buttons, the con.
Hub Reset Button Pressing this button, which is active on the active controller module only, resets all installed modules including both active and standby controller modules. If you issue the reset hub command at the 8260 console, it will give you the same result as using the hub reset button.
3.1.2 Controller Module Fault Tolerance There are two dedicated slots, 18 and 19, provided for installing the controller module. Once installed, the controller does not need to be configured. Since the controller module is a critical component, it is recommended to have a second controller module installed in the hub for backup purposes.
3.1.4 8260 Fault Tolerant Controller Module Considerations • Up to two controller modules can be installed in the 8260 hub. • Neither controller module occupies a payload slot. • When 2 modules are installed, one is active and the other is standby.
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Chapter 4. 8260 Distributed Management Architecture This chapter will provide an in-depth look at the distributed management architecture of the 8260. The items we will cover are: • 8260 distributed.
These daughter cards provide the following two functions: • Interface to the backplane segments To be able to communicate with devices attached to any of the backplane segments, DMM requires an interface to that segment.
Figure 14. Management Schematic The DMM (and daughter cards) provide management and control facilities in the following areas: − Configuration The DMM, networks, modules, and port settings can be configured through the DMM using DMM commands. The DMM can be used to configure 8250 as well as 8260 modules.
In a Simple Network Management Protocol (SNMP) managed environment the DMM acts as the SNMP agent, responding to SNMP requests and generating SNMP traps. − Telnet support Using Telnet you can log in remotely to any DMM on the network and manage it from the remote station.
4 .2 The Distributed Management Module (DMM) The stand-alone DMM is a single-slot management module that has no facility for carrying daughter cards. The DMM has 1 module status LED, a 4-character display with a display control toggle button and 2 serial port connectors as shown in Figure 1 5.
Caution As always, great care should be taken when handling logic cards. The level of static electricity that can build up in the human body can be thousands of times greater than the very small switching voltage used in logic cards. An analogy would be connecting your Hi-Fi or TV set to 10,000 volts.
The LCD display and display control button are used to: • Display the current operating state of the module • Determine the network assignment of ports and 8260 modules in the hub • Display the version of the DMM microcode The LCD display normally shows the module operating state.
The lower port is the auxiliary port and can be jumpered for RS-232 or RS-423 operation. This port allows you to attach a terminal locally (or via modem) to DMM. Note: The default is RS-232. See Table 7 on page 42 for the pinout of the cables used for attaching terminals to the auxiliary port.
proper modem operation. See 4.2.4.3, “Configuring Terminal Settings for DMM” on page 47 for description of Set Terminal Hangup command. 4.2.4 Configuring the DMM The following table is a quick reference to the tasks required to configure the DMM interface.
Once the terminal has been configured press the Enter key. If the terminal has been configured correctly the following message should be displayed: Table 10 (Page 2 of 2). DMM Terminal Def a ul ts a nd Options Parameter Factory Default Options Stop Bits 1 1 or 2 8260A Distributed Management Module (v2.
8260A> set login password Enter current session password for user ″ system ″: Enter new password: Verify - re-enter password: User password changed. 8260A> Figure 18. Changing Superuser Password Note: DMM passwords are case sensitive.
8260A> show login Login Table: Index Login Name Access Active Sessions ----- --------------- -------------- --------------- 1 system Super User 1 2 shabani Super User 0 3 admin1 Administrat.
Login: Login: system Password: A user with Super User or Administrator Access is already logged in. You are being logged in with User Access ... Welcome to user service on 8260A. 8260A> set login access super_user Super_user access granted.
Note: The baud rate specified in this command must match the settings of your terminal; otherwise, after issuing this command, the communication between the terminal and DMM will be lost. In that case, you must change the setting of your terminal before you can reestablish the communication.
In this example, 9.67.46.3 is the address of the TCP/IP station attached to the DMM port. To use SLIP, you must also perform the following tasks: 1. Assign a n IP address to DM M for communication over the SLIP interface. The following example defines 9.
This option is very useful in identifying the DMM to which you are logged in. The default prompt is ″8260>″. It is recommended that you use the same ID for both the terminal prompt and the DMM device name. See 4.2.4.4, “ Configuring DMM Device” on page 50 for how to configure DMM device name.
This command sets the clock to 3:45 p.m., Thursday, Jan 19th, 1995. The clock is driven by an internal battery which is designed to last for 10 years. • Set Device This command allows you to configure the following for DMM: − Device name This command allows you to configure a name for DMM.
The factory default is for the DMM to run through a full set of diagnostics each time it is rebooted. By using the following command you can make the DMM bypass the diagnostics and boot up faster: 826.
You can configure DMM to force a mastership election when it is inserted into a hub. This option may be used to ensure that the DMM gets the opportunity to obtain the appropriate authority after it is removed and inserted back into the hub.
Note that for your DMM to receive traps from the other stations, your DMM must be defined as a trap receiver in the community table of the other stations.
For example, to assign a default gateway of 9.67.46.238 to the token_ring_10 segment on the ShuntBus, you must use the following command: 8260A> set ip default_gateway 9.67.46.238 token_ring_10 Note that DMM will use the IP address assigned to a segment to communicate through that segment.
3. After configuring the IP address(es) for DMM, you must assign an E-MAC or T-MAC to any backplane through which the DMM is going to communicate using IP. For information about how to assign E-MAC or T-MAC to a backplane segment, please refer to 4.4, “MAC Daughter Cards” on page 6 1 .
8260A> show community Index Community Name IP Address Access ----- -------------------- --------------- ------ 1 public ***.***.***.*** Read-Only 2 public 9.24.104.23 All 3 public 9.24.104.70 All 4 public 9.67.46.45 All 5 [empty] 6 [empty] 7 [empty] 8 [empty] 9 [empty] 10 [empty] 8260A> Figure 30.
8260A> set alert port_up_down {enable|disable|filter} If you enable this option, all the port up and port down traps will be sent to the local console.
Figure 31. EC-DMM Front Panel 4.3.1 Installing the EC-DMM Remove the card from its shipping container and check it for damage. There are 2 jumper blocks that may need to be changed, JP8 and JP9. These jumpers are shown in Figure 32 on page 6 0 . These jumpers allow you to set the auxiliary DB-9 connector to RS-232 or RS-423.
Figure 32. Jumpering for the EC-DMM DB-9 Ports Holding the DMM by the faceplate, slide it into the slot in the 8260. Like all 8260 modules it can be hot plugged. If the EC-DMM has been installed correctly and is functioning the status LED should come on.
Ethernet media module in slot 2 will also turn on to indicate those ports have been assigned to Ethernet_1. If there were more media modules with ports assigned to Ethernet_1 their port LEDs would also turn on.
daughter card to an isolated segment on a media module, the MAC daughter card must be installed on that media module. Note E-MACs installed on EC-DMM can collect detailed statistical information about all the ShuntBus and Enhanced TriChannel Ethernet segments.
3 . Th e stand-alone D M M is always considered to be on the first subslot of the slot in which the stand-alone DMM is installed. Note that a stand-alone DMM does not have the housing for a MAC daughter card.
4.4.1 Ethernet MAC Daughter Card (E-MAC) E-MAC is a MAC daughter card which can be installed on an EC-DMM or Ethernet media modules. Figure 36 shows how you can install up to 6 E-MACs on a single EC-DMM.
2 . U se the following command to s et a n appropriate mode fo r the network interface on the E-MAC: 8260A> set module 2.2 interface {enable|disable|standby} The valid options for this command are: • Enable This option allows the network interface on the E-MAC to be activated automatically when attached to a backplane segments.
In this example, the E-MAC is installed in the first subslot of the EC-DMM which is installed in slot 1 of the 8260. The output from this command is shown in Figure 38 on page 6 6 . 8260A> show module 2.2 verbose Slot Module Version Network General Information ----- --------------- ------- ------------- ------------------- 02.
2 . I f yo u are planning to use LAAs within your network, use the following example to assign a locally administered address to T-MAC: 8260A> set module 6.2 locally_administered_address 40-00-00-82-60-a1 Note that assigning a locally administered address to T-MAC, does not result in the T-MAC using the assigned address automatically.
T-MACs attached to the same segment and want one of them to act as a backup for the active T-MAC. 6. Assign t h e T-MAC to the desired segment using the following example: 8260A> set module 6.
8260A> show module 6.2 verbose Slot Module Version Network General Information ----- --------------- ------- ------------- ------------------- 06.02 T-MAC v2.00 TOKEN_RING_10 T-MAC: Token Ring Network Monitor Card Boot Version: v2.00 IP Address: 9.
4.5.1 Managing 8260 with DMM The following is the summary of the capabilities of DMM when managing an 8260 which is populated with both 8260 and 8250 modules: 1.
segment. If multiple 8250 networks need to be monitored simultaneously then each network requires its own 8250 xMM. 8 . Th e two previous points mean that the more monitoring required on 8250 networks the fewer payload slots are available for media modules.
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Chapter 5. 8260 Intelligent Power Management Subsystem The 8260 provides extensive power management functions that allow you to take advantage of the modular load-sharing power supply system available on the 8260. This chapter provides detailed information about the power management subsystem of the 8260.
Figure 42. 8260 with 4 Power Supplies 5.2 Power Class Power class can be considered as a power priority which ranges from 1 to 10. 10 is the highest priority and 1 is the lowest priority.
with slot 1 to 17. The Controller module will repeat this process for all other power classes in descending order of their priority until either all the modules are powered up or the available power supply is exhausted. Note: You cannot assign a power class to the 8250 modules and they do not take part in the power management.
8260> show power slot all Power Management Information ---------------------------- Slot Power Information: Slot Class Admin Status Operating Status ---- ----- ------------ ----------------.
Hub Information: Hub Type: 58G5801 Backplane Information: Backplane Type Revision -------------- -------- Load-Sharing Power Distribution Board 0 Enhanced TriChannel Backplane 0 Ring Backplane.
8260> show power budget Power Management Information ---------------------------- Hub Power Budget : Voltage Type Voltage Level Watts Capacity Watts Available Watts Consumed ------------ ------------- -------------- --------------- -------- +5V 5.
Note: If a power supply fails and there is still enough power in the hub to operate all the installed modules, the modules will continue their operation without any interruption.
In fault-tolerant mode the 8260 does not reserve any specific power supply in reserve; instead, the reserved power is reserved across all the installed power supplies as shown in Figure 4 9. This ensures that the failure of any one power supply has no impact on the operation of the hub and the installed modules.
5. 4 Managing Power in the 8260 The 8260 fault-tolerant Controller module provides extensive power management functions for the 8260 and all its installed modules. However, the capabilities of the Controller module are enhanced via the power management facilities offered by DMM.
8260> 8260> show inventory HUB/ Hardware Slot Module Version Serial # Vendor Date ----- ---------------- -------- ---------------- ---------------- ------ HUB 58G5801 A H8048 ibm 940313 01.01 1 EC-DMM 1.0 B 1067067 IBM 940421 02.01 1 E24PS-6/8 A 1002683 ibm 940302 02.
Figure 51. Installing 8260 Modules in an 8260 Managed b y D MM 5.4.2 Installing 8260 Module in an 8260 Not Managed by DMM When a new 8260 module is inserted in the hub and there is no DMM installed in the 8260, the process of powering up the module is identical to what was described above.
2. Th e 8250 module sends module type information to the Controller module. The Controller module has no information about how much power is consumed by the module at this stage. 3 . T h e Controller module forwards the module type o f the newly inserted 8250 module to DMM.
5.4.4 Installing 8250 Module in a Hub Not Managed by DMM When a new 8250 module is inserted in a hub which is not managed by DMM, the process of applying power to the newly installed module is the same as what was described above.
• When the hub is in the fault-tolerant mode, the reserved power is reserved across all installed power supplies. It is not an individual power supply out of all installed power supplies. • Although a power class does not apply to the 8250 module, the controller will see the 8250 module having the highest power class, 10.
8260> show hub Hub Information: Hub Type: 58G5801 Power Supply Information: Power Supply Status ------------ ------ 1 NORMAL 2 NORMAL 3 FAULTY 4 REMOVED Temperature Information: Probe Locat.
system environment is changed and the power status has become non-fault tolerant due to a faulty power supply, as shown below. Message received from this device on 15:47 Mon 23 May 94: Enterpr.
DMM and a 24 PPS Ethernet module) and a number of 8250 modules. Both 8260 modules have a power class of 3 assigned to them. Upon taking one power supply down, we found that since the remaining power w.
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Chapter 6. 8260 Intelligent Cooling Subsystem This chapter provides you with information about the 8260 intelligent cooling subsystem. 6.1 Intelligent Cooling Subsystem The 8260 intelligent cooling su.
Each of the three fan units cools an overlapped area in the hub covering 8 slots. The slots covered by each fan unit are: • Fan 1 - slots 1-8 • Fan 2 - slots 6-13 • Fan 3 - slots 10-17 These 3 areas have their own temperature sensors. Also, integrated into each fan unit is a sensor that detects a stopped or slow fan condition.
If a fan unit stops or the temperature in any of the three cooling zones rises above 60 C, the Controller module may, depending on a user configurable parameter (Overheat_Auto_Power_Down) use the SCI bus to power down some of the 8260 modules in the affected cooling zone in order to bring down the temperature to an acceptable level.
power class and slot position within the affected cooling zone as shown if Figure 63 on page 9 4 . Figure 63. 8260 Cooling Zones and Power Cl a s s e s • Modules are powered down until the 5 volt power supply consumption is reduced by 50 watts.
Figure 64. Flow Char t fo r a n Overheat Condition Chapter 6. 8260 Intelligent Cooling Subsystem 95.
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Chapter 7. 8260 Ethernet Modules This chapter will describe the Ethernet modules for the 8260 multiprotocol intelligent switching hub. Each module will be described along with its features and the necessary steps required to configure these modules. Where necessary, examples will be given of where the module would be used.
to 16 times consecutively, after which the station reports a transmission error to the higher layer protocol. The probability of a collision occurring is directly proportional to the number of stations, frequency of transmissions, size of frames, and length of the LAN segment.
7.2 8260 Ethernet 24-Port 10Base-T Module The 8260 Ethernet 24-Port 10Base-T Module is a 24-port IEEE 802.3 repeater module that complies with the 10Base-T standard and supports backbone and to-the-desk connectivity over Unshielded Twisted Pair (UTP) cabling.
types of modules. For example, you can set a 10Base-T port on an 8260 Ethernet 24-Port 10Base-T Module to be a redundant port for 1 10Base-FB on the 8260 Ethernet 10-Port 10Base-FB Module. • Auto-polarity detection You can enable/disable auto-polarity detection for each port on the module.
Figure 65. Front View of 24-Port 10Base-T Module Figure 65 shows the front view of the 8260 Ethernet 24-Port 10Base-T Module. As can be seen, the 8260 Ethernet 24-Port 10Base-T Module provides you with LED Indicators on the front panel that allow you to monitor the status of the module and the individual ports.
Figure 66 shows the side view of the 8260 Ethernet 24-Port 10Base-T Module. A s can be seen, in addition to the 8 isolated segments and the mounting for the E-MAC, there is an 8-position DIP switch located on the module. These DIP switches are used in the absence of an installed management module in the 8260.
Figure 67. 24-Port 10Base-T DIP Switches The DIP switches let you perform the following: • Use DIP switch positions 1 through 4 to assign all the ports on the module to one of the backplane segments or an isolated-1 segment.
4.2.4.4, “ Configuring DMM Device” on page 5 0. By default, DIP switch 5 is set to NVRAM. 7. 3 10Base-T Module Usage Figure 68 provides an example of the usage of the 8260 Ethernet 24-Port 10Base-T Module. Figure 68. 24-Port 10Base-T Module U s a g e 7.
Each port on the 8260 Ethernet 24-Port 10Base-T Module can be enabled/disabled independently from the other ports. You can use the following management module command to enable/disable a port: SET PORT {slot.port} MODE {enable|disable} • Set port redundancy The port redundancy feature allows you set redundancy between two ports.
7.5 8260 Ethernet 20/40-Port 10Base-T Module The 8260 Ethernet 20-Port 10Base-T Module, a single-slot 20-port, and the 8260 Ethernet 40-Port 10Base-T Module, a two-slot 40-port are IEEE 802.
• Support for port redundancy You can set up redundancy between two links on the same module or two different modules. Note that port redundancy is supported between different types of modules.
Figure 69. Front View of 20/40-Port 10Base-T Modules Table 19 describes the meaning of these LEDs: Table 19 (Page 1 of 2). 20/40-Port 10Base-T Module LE D Descriptions L E D Name Color State Description Module Sta tus Green On Module powered up OK Off No Power.
Figure 70 shows the side view of the 20/40-port 10Base-T modules. As can be seen, in addition to the 8 isolated segments and the mounting for two E-MACs, there is an 8-position DIP switch located on the module. These DIP switches are used in the absence of an installed management module in the 8260.
Figure 71. 20/40-Port 10Base-T DIP Switches The DIP switches let you perform the following: • Use DIP switch positions 1 through 4 to assign all the ports on the module to one of the backplane segments or an isolated-1 segment.
setting) will be sent to the management module. The actions taken by the management module, upon receipt of this information are described in 4.2.4.4, “ Configuring DMM Device” on page 5 0.
allows the port to receive signals compliant with 10Base-T standard. Lo w squelch level allows the port to receive weaker signals, enabling you to have longer distances, but increases the risk of losing packets due to the impulse noise. The maximum distances supported for UTP and STP cabling under different squelch settings are shown in Table 2 1.
7.7 8260 Ethernet 10-Port 10Base-FB Module The 8260 Ethernet 10-Port 10Base-FB Module is a 10-port module that complies with the 10Base-FB standard and supports backbone and to-the-desk connectivity over fiber optic cabling.
information about the Ethernet security card, please refer to 7.11, “8260 Ethernet Security Daughter Card” on page 1 2 1 . • Support for port redundancy You can set up redundancy between two links on the same module or two different modules. Note that port redundancy is supported between different types of modules.
Figure 72. Front View of 10-Port 10Base-FB Module Figure 72 shows the front view of the 8260 Ethernet 10-Port 10Base-FB Module. As can be seen, the 8260 Ethernet 10-Port 10Base-FB Module provides you with LED indicators on the front panel that allow you to monitor the status of the module and the individual ports.
Figure 73 shows the side view of the 8260 Ethernet 10-Port 10Base-FB Module. As can be seen, in addition to the 4 isolated segments and the mounting for the E-MAC, there is an 8-position DIP switch located on the module. These DIP switches are used in the absence of an installed management module in the 8260.
Figure 74. 10-Port 10Base-FB DIP Switches The DIP switches let you perform the following: • Use DIP switch positions 1 through 4 to assign all the ports on the module to one of the backplane segments or isolated-1 segment.
By default, the module is shipped from the factory with the DIP switches set for Ethernet_1. • Use DIP switch position 5 to choose if the module is going to use the Non-Volatile RAM (ON position) or DIP switch settings (OFF position) for its configuration.
Note Using DIP switches on the 8260 Ethernet 10-Port 10Base-FB Module, it is only possible to assign all the ports to the same network. This network can be one of the 8 Ethernet segments on the backplane, or isolated-1.
This command may be used to allow you to monitor the status of the crucial ports on your network while the alerts from the other ports are disabled. • Set optical power Each port on this module can be set to operate at high or normal power.
7.11 8260 Ethernet Security Daughter Card The 8260 Ethernet Security Card (E-SEC) is a daughter card that allows you to provide security on any Ethernet network to which this card is attached. You can install this card on any Ethernet media module or the 8260 DMM with Ethernet Carrier (EC-DMM).
ports may have one of these two features enabled and finally the last group of ports which may have no security at all. Details of configuring security features are described in 7.
station attached to that port. The transmission of the jammed packet will last the same length of time as the original data packet. Stations that receive a jammed packet will discard it because the CRC (Cyclic Redundancy Check) field of the packet is incorrect.
The entire process of eavesdropping protection takes 32 bit-times from the time the E-SEC card receives the destination address field in the packet. 7.11.2 Configuring the Security Module To be able to use the security module you must perform the following steps: 1.
• Enable auto-learning for your Ethernet segment using the following example: 8260A> set security network ethernet_3 auto-learning enable • Although the port and network auto-learning is enable.
wish the station shown in Figure 78 for this port to be able to access our network. The following command was used to delete this entry: 8260A> set security address_table address 10-00-5a-82-59-32 delete c.
7 . Th e following actions can be performed by the E-SEC card in case of intruder detection: a. Report intrusions by logging information about the intrusion in the intruder table.
and port jamming is enabled. You can use the following example to enable the failsafe feature for each port: 8260A> set security port 2.15 failsafe enable 128 8260 Multiprotocol Intelligent Switchi.
Chapter 8. 8260 Token-Ring Support The 8260 token-ring support has been enhanced, compared to the 8250, to provide the following features: • Active re-timing per port • Speed detection by media mo.
8.1.2 Ring Administration The token-passing ring protocol provides relatively greater control and management at the medium access control (MAC) level than that provided by the CSMA/CD protocol. All ring administration functions are implemented in the token-ring adapters and the functions are carried out at the MAC level.
ring purge process may be triggered after detecting the loss of a token, frame, or errors caused by adapter-insertion or adapter-removal operations. To purge the ring, the active monitor initiates a Ring Purge MAC frame broadcast and starts the Ring-purge timer.
8.1.4 Differential Manchester Coding The 802.5 standard specifies that Differential Manchester coding is used for transmitting data on the ring. With this encoding technique, every bit is comprised of a half-bit time signal at a low or high polarity and other half-bit time signal at the opposite polarity.
The other important point about the Differential Manchester coding is that it uses a higher baud rate (the number of state changes on the transmission media) than the actual data transfer bit rate on the ring, to provide the benefit described above. In fact, the baud rate on the token-ring is twice the data transfer bit rate.
the signal passes from one station to another and ultimately can result in loss or corruption of data. This is a major reason for the limit on the maximum number of stations supported on a token-ring networks. Note that this limit varies depending on the speed of the ring and type of lobe cables used in attaching the workstations to the hub.
Figure 81. Self-Shorting Relays on the ShuntBus Once a module is inserted into a slot in the 8260, the ShuntBus connector on the module breaks the shunt on the backplane. It is then the responsibility of the module to restore this connection by using a relay type function.
Mbps operation is different for the two bit-rates. For 4 Mbps operation, the encoding is straightforward. One of the data-signal shunt pairs (Data_A) carries the Differential Manchester encoded bit stream, whereas there is no signal on the other pair (Data_B).
Figure 83. 8260 Backplane Signalling for 16 Mbps Operation Note that the 8260 backplane interface is completely digital , whereas the signals sent on the transmission media (lobe cables and the cabling between two hubs) is said to be analog . In this context an analog signal is one where there is no separate clock signal.
signal as the signal is clocked at 8 MHz on both the backplane and the transmission media (lobe cables and inter-wiring closet cables). 8.3 Dual Phase Lock Loop The intent of the dual PLL design of th.
Figure 84. Components of Dual Phase Lock Loop The reduction in the jitter would allow you to have longer lobe distances and higher number of station per ring segment. More details about the number of supported stations and the lobe cable length are provided in 8.
Figure 85. DPLL Implementation on Active Ports Note Since the jitter is removed from the signal before entering the backplane, the signal received from the backplane would only have a small amount of jitter accumulated on the backplane. The signal received from the backplane goes through the narrowband PLL before being transmitted out of the port.
8. 4 Jitter Attenuator Daughter Card (JADC) The JADC can be mounted on any 8260 token-ring module and contains a DPLL function. It must be installed on a module under the following circumstances: 1. Your 18-port active module is configured with ports 1 7 and 1 8 acting as RI/RO ports and these ports are connected to a non-8260 hub.
wideband/wideband configuration when the port is in trunk mode. This is done to ensure that when the ring is reconfigured outside the module, a signal with a lot of accumulated jitter does not hit a wideband/narrowband configuration until it has gone through a JADC to remove the excessive jitter.
Note Please note that it is incorrect to say that we support 250 stations at 4 Mbps. That is not necessarily true since there are some adapters on the market that implement the minimum elastic buffer required for each workstation adapter card.
backplane rings on the ShuntBus. This enables you to form multiple rings on a single module using this switch fabric. This is shown in Figure 87 on page 1 4 4 . Figure 87. Token-Ring Per-Port Switching The rings to which the various ports on a per-port switching module can attach may be a mixture of 4 and/or 16 Mbps segments.
Note With the 18-port active per-port switching module the lobe ports can be distributed concurrently across a total of 11 segments which can be a mixture of backplane token-ring segments and isolated segments on the module.
5. Participation i n neighbor notification By participating in the neighbor notification, the station learns the address of its Nearest Active Upstream Neighbor (NAUN).
SET PORT {slot.port} STATIC_SWITCH {enable|disable} If you try to switch a port with enabled static switch from one segment to another, you will get the an error message. This is shown in Figure 8 9. 8260> set port 6.1 static_switch enable Port 06.
Figure 90. Port Switching with Source Routing Bridges 8.7 Signal Flow on the 8260 Token-Ring Modules On the module switching modules (active or passive), the signal flow is predefined on the module basis.
8.8 Speed Detection Speed detection on the 8260 token-ring media modules is achieved in one of two ways depending on the module type. 8.8.1 Speed Detection on Active Modules For the active modules, speed detection is accomplished by counting the number of transitions in the incoming data over a set period of time.
• If the ″ A ″ and ″ C ″ bits are not set to B ′1′, the port which just inserted into the ring is assumed to be operating at the wrong speed. The Recovery ASIC will prevent that port from entering the ring and will also unwrap all the wrapped ports allowing the existing stations to resume their access to the ring.
8.9 Beacon Recovery 8.9.1 Introduction When a station detects a failure of token-claiming following a hard error, it transmits Beacon MAC frames with an all-station address to its ring, pacing them at a specified time interval known as ″ T(transmit_pacing) ″.
To ensure that TRMM has an accurate ring map, you must issue the following command for each port that has a MAC-less station (such as token-ring tracing tools) attached to it: SET PORT {slot.
2. Isolate a n y n e w modules that have logical ports on the ring (logical is a port which cannot be disabled such as TRMM or bridge). 3 . I f the source or destination address in the packet is external to the hub, wait for up to 5 seconds to check if the beaconing can be disabled externally.
TRMM V3.0 allows you to enable/disable the beacon recovery function using the following command: SET DEVICE BEACON_RECOVERY {enable|disable} Note that this feature must be enabled during normal operation; however, you may disable this feature as a trouble shooting tool, to prevent the ring from recovering before the faulty device is isolated.
8.9.3 Beacon Recovery in the 8260 Beacon recovery in the 8260 has been improved by distributing the beacon recovery process to each of the 8260 token-ring media modules (both active and passive).
Figure 94. Recovery ASIC in Per-Port Switching Module You can find out the MAC address of the Recovery ASIC on each module by using the following DMM command: SH MODULE {slot.subslot} VERBOSE Figure 95 showsDisplay the output from this command for a 20-port passive token-ring module.
8260> show module 6.1 verbose Slot Module Version Network General Information ----- --------------- ------- ------------- ------------------- 06.01 T18PSA v1.00 PER_PORT Trunk(s) are down T18PSA: Token Ring Active Port Switching Twisted Pair Module Boot Version: v1.
Ring monitors are associated with each port and can be switched from upstream to downstream of that port. When the ring monitor detects a Beacon MAC frame on the ring, it calls in the Recovery ASIC to perform beacon recovery and isolate the faulty port (station).
detect this and will issue Beacon MAC frames. These Beacon MAC frames will be repeated by each station (station ″ D ″ in this case) until they arrive in the DRA in module 1. Upon seeing these Beacon MAC frames, the URA on module 1 will issue Beacon Type 1 MAC frames.
Monitor is attached. Once the Recovery ASIC is inserted into that ring, the DRA will be placed downstream of the last port of the module on the beaconing ring. Also, the URA will be inserted into the backup path if ports 17 and 18 are configured as trunk ports.
Now, DRA in ″ TR Module 2 ″ starts tracking the stations that are involved in the neighbor notification process. The tracking will stop when the DRA in ″ TR Module 2 ″ encounters an AMP/SMP MAC frame with the A/C bit set to B ′0′, that is, AMP/SMP MAC frame issued by the NAUN to DRA.
device on that port and therefore, the Recovery ASIC will be able to build the address-to-port map by listening to neighbor notification process as described above.
8260> show ring_map token_ring logical token_ring_1 Token Ring Logical Map for Network TOKEN_RING_1 MAC Address Slot Port ----------------- ----- ---- 02-00-00-c0-cc-1c 05.01 1 02-00-00-c0-cc-0a 05.01 2 02-00-00-e0-9c-10 05.01 2 08-00-8f-40-01-a6 05.
8260> show ring_map token_ring logical token_ring_1 Token Ring Logical Map for Network TOKEN_RING_1 MAC Address Slot Port ----------------- ----- ---- 02-00-00-c0-cc-1c 05.01 1 02-00-00-c0-cc-0a 05.01 2 02-00-00-e0-9c-10 05.01 2 08-00-8f-40-01-a6 05.
2 . A n AMP/SMP M AC frame with the A/C bit se t B ′0′ is seen. This indicates that there is only one station attached to this port and the address of that station is one which is seen in the AMP/SMP MAC frame with the A/C bit set to B ′0′.
8260> show ring_map token_ring logical token_ring_2 Token Ring Logical Map for Network TOKEN_RING_2 MAC Address Slot Port ----------------- ----- ---- 02-00-00-e0-9c-10 06.01 1 02-00-00-c0-cc-68 06.01 7 00-00-00-00-00-00 06.01 10 08-00-8f-d0-90-fa 06.
As illustrated in Figure 104 on page 167, the dual-ring topology consists of two counter-rotating rings that provide interconnection for both dual-ring and single-ring stations. One of the rings is designated as the primary ring and the other ring is designated as the secondary ring .
Figure 105. Wrapback i n Dual-Ring Topology 8.12.1 Trunk Wrapping on the Active Per-Port Switching Modules The 18-port active per-port switching module and the 10-port dual fiber repeater module conform to the 802.5C dual-ring reconfiguration practice.
Figure 106. Trunk Wrapping in Active Per-Port Switching Module 8.12.2 Trunk Wrapping on the Active Module-Switching Modules When, during the beacon recovery process, it is determined that the fault domain is between RI and RO, the following process takes place: 1 .
Note On the 18-port active module switching module, the URA cannot be switched to the backup path. This means that the operation of this module is not IEEE 802.
Because these modules do not have switching capabilities, the URA cannot be switched onto the faulty segment. In order to execute the unwrapping tests, the module must wrap the backplane and wrap all the lobe ports. This allows the URA to be on a segment isolated with the trunk under the test.
172 8260 Multiprotocol Intelligent Switching Hub.
Chapter 9. 8260 Token-Ring Modules This chapter will describe the token-ring modules for the 8260 multiprotocol intelligent switching hub. Each module will be described along with its features and the necessary steps required to configure these modules.
Once the ring speed for the network is set, each port, trunk or module assigned to that network will assume the speed of the network. • Enable support for splitters and fan-out devices If you are pl.
• When ports 17 and 18 are configured as RI/RO ports, they are fully compliant with the IEEE 802.5C (dual-ring recovery) standard. • Support for installation of one T-MAC. • Support for installation of one Jitter Attenuator daughter card. Figure 108.
Figure 109 shows the side view of the 18-port active per-port switching module. As can be seen, in addition to the 11 isolated segments and the mounting for one T-MAC, there is an 8-position DIP switch located on the module. These DIP switches are used in the absence of an installed management module in the 8260.
The DIP switches let you perform the following: • Use DIP switch positions 1 through 4 to assign all the ports on the module to one of the backplane segments or isolated-1 segment.
Active Per-Port Switching Module Figure 110. Onboard Lobe/Trunk Jumpers on 18-Port Note that setting the jumpers to the left selects RI/RO and setting the jumpers to the right selects lobe ports. 2 . S e t beacon threshold for the module. When a beaconing condition is detected on a port, the port is wrapped by the recovery ASIC.
Use the following command to assign each port on the module to one of the backplane segments on the ShuntBus or isolated segments on the module: SET PORT {slot.
required. If a trunk fault appears which disrupts phantom drive, the trunk will wrap immediately. The module never goes to beacon recovery because the problem is corrected before that happens. If, for any reason, phantom is not disturbed by the fault, beacon recovery is initiated as in No.
passive module refer to 8.9.4, “Beacon Recovery on the Module Switching Modules” on page 1 5 8 . • Support for address-to-port mapping using the Recovery ASIC. • Support for fan-out devices and splitters for attaching up to 8 stations to each port.
Figure 111. Front View of 20-Port Passive Module Figure 111 shows the front view of the 20-port passive module. As can be seen, this module provides LED indicators on the front panel that allow you to monitor the status of the module and the individual ports.
Figure 112 shows the side view of the 20-port passive module. As can be seen, in addition to the 11 isolated segments and the mounting for one T-MAC, there is an 8-position DIP switch located on the module. These DIP switches are used in the absence of an installed management module in the 8260.
The number of times that a phantom transition is allowed to cause a port to unwrap is determined by the bcn_threshold parameter which can be set for each module using the following command: SET MODULE {slot.port} BCN_THRESHOLD {0-255} Once the threshold is exceeded, the port or trunk remains wrapped until the user disables and re-enables the port.
9. 6 8260 Dual Fiber Repeater Module This is a single slot module that supports 10 active lobe ports and two sets of fully repeated fiber RI/RO trunk ports. This is a per-port switching module, which means that any of the lobe ports or and trunk port sets can be assigned to any of the backplane segments.
Figure 113. Front View of Dual Fiber Repeater Module Figure 113 shows the front view of the dual fiber repeater module. As can be seen, this module provides LED indicators on the front panel that allow you to monitor the status of the module and the individual ports.
Figure 114 shows the side view of the dual fiber repeater module. As can be seen, in addition to the 11 isolated segments and the mounting for one T-MAC, there is an 8-position DIP switch located on the module. These DIP switches are used in the absence of an installed management module in the 8260.
9.6.1 Configuring the Dual Fiber Repeater Module To configure this module you must do the following: 1 . S e t beacon threshold for the module. When a beaconing condition is detected on a lobe port, the port is wrapped by the Recovery ASIC.
Trunk ports can be enabled/disabled using the following command: SET TRUNK {slot} RING_IN.n MODE {enable|disable} or SET TRUNK {slot} RING_OUT.n MODE {enable|disable} 7. Enable/disable p orts . Each port can be enabled/disabled using the following command: SET PORT {slot.
190 8260 Multiprotocol Intelligent Switching Hub.
Chapter 10. 8260 RMON Support This chapter is intended to provide an understanding of the Remote Network Monitoring (RMON) concepts and to describe what facilities are provided by RMON to help you manage your Ethernet and token-ring LANs. These concepts are common to all RMON products though their implementation may differ.
generation. Information provided by RMON can be used for identifying sources of network problems, for fine-tuning network performance, and planning for network expansion. RMON uses SNMP for communication between the network management station and RMON agents.
Figure 116. An Example of RMON Implementation 10.1.2 RMON Manager The network management station, also known as the RMON manager, works in conjunction with the RMON agents to provide a central point for managing and consolidating information gathered by the RMON agents.
baseline network characteristics, quickly spotting potential trouble spots and resolving them before major crises occur. 10.2 RMON Goals To ensure that RMON can function effectively and efficiently in.
10.2.5 Multiple Managers The RMON framework permits the RMON agents to be managed by multiple network management stations concurrently. This is useful for implementing disaster recovery, and allowing different units or functions in the organization to access information provided by the RMON agents.
Table 32. MIB Structure fo r RFC 1271 - RMON M I B fo r Ethernet Group Description Statistics The Statistics group provides an overview of the current segment network activity at any given moment. It collects segment statistics like octets, packets, collisions, broadcast, various error counters and packet size.
memory and disk space to the RMON application. I f you are running RMON subset on a bridge or router, you might want to consider offloading the task to an external monitoring device. Octets The number of octets of data (including those in bad packets) received on the network (including the FCS octets but excluding the framing bits).
Fragments Fragments are similar to CRC Align Error packets with the exception that each fragmented packet is less than 64 octets in length. This can indicate a high collision rate. Collisions The number of collisions detected on the network. Collisions are common phenomena on Ethernet segments.
The History Control table stores configuration entries containing the interface information, polling period, number of buckets requested, and number of buckets granted. The number of buckets requested represents the number of times the operator wants to collect and store the samples.
10.4.1.4 Host Group The Host group creates and maintains a host table for the segment monitored. The Host MIB is very useful as it contains information and cumulative statistics for every discovered h.
The Destination-Source table captures similar information but indexes it from a receiver-oriented perspective. 10.4.1.7 Filter Group The Filter group allows packets that are of particular interest to be captured using arbitrary filter expressions. These packets are then directed into channels that can be turned on or off to control the packet flow.
Table 33. MIB Structure fo r RFC 1513 - Token-Ring Extensions to the RMON M IB Group Description Token-ring Statistics Token-ring MAC-layer Statistics This group collects ring error statistics and ring utilization from the MAC layer.
Here is a list of MAC statistics available under this group and their respective descriptions: Drop Event The number of events in which MAC packets were dropped by the probe due to unavailability of resources on the probe itself. It doesn ′ t represent the number of packets dropped but the number of times this condition was detected.
• Recovery mode set • Streaming signal (not Claim Token MAC frame) • Streaming signal, Claim Token MAC frame or intermediate detection of hard error Beacon Time Keeps track of the amount of time that the ring has been in the beaconing state. Beacon Packet Refers to the total number of Beacon MAC frames detected by the probe.
total number of burst errors reported in the Soft Error Report MAC frame. ACErrors This error is flagged when a frame is copied by an adapter to which it was not addressed. Address Copied Errors or ACErrors will increment the error counter only for the nearest upstream neighbor of the station reporting the error.
Frequency Error Occurs when a ring station detects a frequency error. A new station inserting into the ring can cause downstream stations to be ″ off frequency ″. This condition seems to happen more on 16 Mbps than 4 Mbps rings. This statistic is found in the total number of Frequency errors reported in the Soft Error Report MAC frame.
or hub, you might want to consider offloading the task to an external monitoring device. Octets The total number of octets of data in good frames received on the network in non-MAC packets (including the FCS octets but excluding the framing bits ). An octet represents an integral collection of eight bits of information.
10.5.1.2 History Group The token-ring History groups capture historical information about network utilization and error statistics for the token-ring network.
• Line Errors • Internal Errors • Burst Errors • Address Copied Errors • Abort Errors • Lost Frame Errors • Congestion Errors • Frame Copied Errors • Frequency Errors • Token Error.
• Number of active stations on the ring • Current status of the ring with the following possible ring states: − Normal operation − Ring Purge state − Claim Token state − Beacon Frame Strea.
10.5.1.5 Ring Station Configuration Group The token-ring Ring Station Config group provides the capability to actively manage and query the configuration of each token-ring node in the local ring. The RMON probe can initiate the removal of a station from the ring by sending a Remove Station MAC frame.
source routing bridges. Transparent bridges do not use this field. One-Hop Frames Contains the total number of frames received whose route had one hop, were not all-routes broadcast frames, and whose source or destination address were on this ring.
following command to display the status of the DMM network interfaces via T-MACs and E-MACs installed in your hub: 8260A> show interface Figure 117 shows an example of the output from this command:.
• Host • History • Alarm • Event • Matrix • Statistics • TopN-hosts 10.6.2 Monitoring Functions Supported by T-MAC T-MAC V2.0 provides the following functions: • Support for standard R.
Note The statistics that are collected using the DMM commands described in the next sections are NOT all RMON statistics. The non-RMON statistics are identified. 10.6.3 SHOW COUNTER Command for Ethernet Networks This DMM command allows you to display the following information for the segments to which the DMM has an interface via an E-MAC: 1.
8260A> 8260A> show counter interface ethernet_1 Interface Statistics for ETHERNET_1 ----------------------------------------------------------------------------- Received Octets 939978 R.
8260A> 8260A> show counter repeater ethernet_1 module 2 Repeater Statistics for Module 2 on ETHERNET_1 ----------------------------------------------------------------------------- Reada.
8260A> 8260A> show counter rmon hosts ethernet_1 all RMON Hosts Table for Host Address 00-00-c9-01-01-0b on Port 2.4 ---------------------------------------------------------------------.
• Statistics • TopN-hosts To be able to collect and view the above information, you must perform the following steps: 1. Use t h e ″ SHOW INTERFACE ″ command to determine th e interface index for each E-MAC installed in your hub. 2. Enable t h e E-MAC interface if not enabled already.
SET RMON ALARM ETHERNET {stat_type}.{interface} RISING {threshold} FALLING {threshold} {event} {time} {trigger} {alarm type} The following is a summary of the parameters that can be specified for the .
The format of the command to display the contents of the control table for the statistics group is slightly different. In this case, you must use the following command: SHOW RMON statistics ETHERNET CONTROL ALL The following example allows you to determine all the interfaces on which the RMON host group is enabled.
8260A> show rmon host data 1 all by_creation_order RMON Host display for Interface 3 : Creation Order : 1 Host Address : 10-00-5A-D4-B0-8C Input Packets : 2954 Output Packets : 2954 Input O.
8260A> 8260A> show counter token_ring token_ring_7 Token Ring Statistics for TOKEN_RING_7 ----------------------------------------------------------------------------- Ring Status: No Problems Detected Ring State: Opened Ring Open Status: Ring Open Ring Speed: 4 MBPS Upstream Station: 40-00-00-03-33-38 Functional Addr.
8260A> show counter interface token_ring_7 Interface Statistics for TOKEN_RING_7 ----------------------------------------------------------------------------- Received Octets 6082132 Receiv.
8260A> show counter rmon hosts token_ring_7 all RMON Hosts Table for Host Address 40-00-00-03-33-38 on Port 6.9 -----------------------------------------------------------------------------.
8260A> show counter rmon ring_station token_ring_7 ring RMON Token Ring Station Control Statistics for Network TOKEN_RING_7 -----------------------------------------------------------------.
8260A> 8260A> show counter rmon ring_station token_ring_7 all RMON Token Ring Station Statistics for Network TOKEN_RING_7 ----------------------------------------------------------------.
SHOW COUNTER RMON TR_MAC_LAYER {network} An example of the output displayed for this command is shown in Figure 129. 8260A> 8260A> show counter rmon tr_mac_layer token_ring_7 RMON Token .
8260A> 8260A> show counter rmon tr_promiscuous token_ring_7 RMON Token Ring Promiscuous Statistics for Network TOKEN_RING_7 --------------------------------------------------------------.
8260A> show counter rmon tr_source_routing token_ring_7 RMON Token Ring Source Routing Statistics for Network TOKEN_RING_7 ------------------------------------------------------------------.
3. Enable t h e collection of RMON information by T-MAC, using the following command: SET MODULE {slot.subslot} RMON_GROUP enable This command enables the collection of RMON information by T-MAC. You must, also, enable the collection of individual RMON groups using the commands described in the next step.
8260A> 8260A> show module 8.2 verbose Slot Module Version Network General Information ----- --------------- ------- ------------- ------------------- 08.02 T-MAC v2.00 TOKEN_RING_7 T-MAC: Token Ring Network Monitor Card Boot Version: v2.
parameters, and remove stations on its ring. It also collects and forwards configuration reports generated by stations on its ring to the LAN manager. Traditionally, CRS and REM functions are implemented in the bridges.
8260A> show tr_surrogate 8.2 surr_status Surrogate Status Data for Network TOKEN_RING_7 ------------------------------------------------------------------------ Surrogate Admin Status: ENABLED Port Mac Address: 10-00-f1-0b-58-00 Ring Segment: 0000 Ring Utilization: 0.
8260A> show tr_surrogate 8.2 rem_status Ring Error Monitor Status Data for Network TOKEN_RING_7 ----------------------------------------------------------------------------- REM Traps: DISA.
An example of the output from this command is shown in Figure 136 on page 236. 8260A> show tr_surrogate 8.2 crs_station all Configuration Report Server Ring Station Data for MAC address 10-00-f1-0b-58-00 of Network TOKEN_RING_7 ----------------------------------------------------------------------------- Station Status: Active Mfg.
SHOW TR_SURROGATE {slot.subslot} REM_SOFT_ERROR • Threshold exceeded conditions SHOW TR_SURROGATE {slot.subslot} REM_THRESHOLD_EXCD 10.8 DOT5_Group Support by T-MAC DOT5_Group support by T-MAC allows you to perform the statistics collection tasks defined in the IEEE 802.
The definitions for the terminology used within the above table are: • Analyzes = interprets the data that is collected • Provides = sends solicited information on data collected • Reports = sends unsolicited information on data collected Table 35 (Page 2 of 2).
Chapter 11. 8260 Multiprotocol Interconnect Module This chapter provides an overview of the routing and bridging functions provided by the Multiprotocol Interconnect module as well as discussing the steps required to configure the module to perform these functions.
Note: DECnet Phase IV routing is not supported on token-ring ports. The Multiprotocol Interconnect module uses a 32-bit RISC processor (80960FA) for high performance, allowing you to forward up to 45,000 packets per second when bridging and up to 30,000 packets per second when routing IP.
Figure 137 on page 241 shows the front view of the 1-slot and 2-slot Multiprotocol Interconnect modules. Figure 137. Front View of th e Multiprotocol Interconnect Modules There are a number of activit.
Table 36. Interconnect Module L E D Description L E D Name Color State Description Module Sta tus Green On Power is on, software functioning Off Power is off or complete failure Blinking Power is on b.
It is expected that the customer will buy the Multiprotocol Interconnect module pre-configured with I/O cards, including proper programming for EEPROM, and will leave the I/O card configuration, as is, for extended periods of time.
Do you want to enter this into module x.y ′ s EEPROM (Y/N): 8. Enter Y in response to t he above prompt. 9. Remove t h e module from the 8260 a n d install the I/O card. 1 0 . Return DMM to normal operation using the following command: BOOT 1 1 . Install the module in the 8260.
11.4 Routing Functions The Multiprotocol Interconnect module supports the following routing protocols: • IP • IPX • DECnet Phase IV 11.4.1 IP Routing Support When acting as an IP router, the Multiprotocol Interconnect module provides support for: • Directed broadcast • ICMP • Proxy ARP • Ethernet or 802.
• Supports authentication between routers. • Importation of RIP routes and static routes to an OSPF domain may be enabled or disabled. • Filters may be configured to import or discard specific RIP and static routes to OSPF. • Supports hop count to OSPF metric conversion when importing RIP and static routes.
command to assign ports 1 thru 6 to the desired Ethernet segments on the ShuntBus or Enhanced TriChannel. SET PORT {slot.port} NETWORK {ethernet_n|isolated} Note that ports 7 and 8 are not assigned to any segment on the backplane; therefore, the above command is not required for these ports.
• Configuration Menu This option allows you to alter configuration parameters and monitor statistics about the Multiprotocol Interconnect module. • Status Menu This option allows you to review the statistics and configuration information without changing any values.
* Help Screen Module: BladeRunner Time: 13:07 5 Jan 95 control-C: Cancel input, cancel a popup menu, or exit a screen control-J: Go to the screen jump table control-K: Go to this help screen c.
Config * Jump Table - Config screens Module: BladeRunner Time: 14:25 5 Jan 95 System Download Trap Dest. Table Physical Port List Phy. Port Protocol Phy. Port Interface Logical Port Logical Port MLink Bridging System Bridging Port STP System STP Port Filtering Database Custom Filter Test Custom Filter Stmt.
• Dot5 Group • Frame Relay Group • IP Forward Group • OSPF Group • PPPF Group • Retix Private MIB extensions The following SNMP traps will be sent by the SNMP agent to the SNMP managers which have been defined as a trap receiver .
Config * Configuration Menu Module: BladeRunner Time: 14:24 5 Jan 95 System Menu Ports Menu Bridge Menu Protocols Menu Exit System parameters Menu Figure 141. LMS Configuration Panel The following sections will describe the required steps for configuring these features.
− Warmstart : All the configuration settings are read from the FLASH memory, resulting in the restoration of the last saved configuration information.
To add an entry to this table, you must select Add Entry from the Menu Bar options of the panel shown in Figure 143 on page 2 5 4 . You will then be prompted (via a pop-up menu) to enter the IP address and the community name of the SNMP manager.
Note If you select Start BOOTP Download and do not specify the TFTP server IP address and TFTP filename in the above panel, the Multiprotocol Interconnect module will use BOOTP to locate a BOOTP server in the network in order to get this information to perform the download operation.
Config * Ports Menu Module: BladeRunner Time: 15:30 5 Jan Physical Port List Physical Port Protocol Parameters Physical Port Interface Parameters Logical Port Parameters Logical Port Multilink Parameters Exit Return to the previous screen Figure 145.
applicable to the LAN ports and will not be discussed any further in this book. 11.8.2.1 Configuring Physical Port Parameters The Physical Port List panel displays information about the physical ports currently installed on your module. An example of this panel is shown in Figure 146.
Config * Physical Port List Module: BladeRunner System Page 2 Time: 15:49 5 Jan 95 Port ID Name Connection Card Type Protocol 7 PHYSICAL PORT FRONT PANEL 1 tokenRing tokenRing 8 PHYSICAL PORT FRONT PANEL 2 tokenRing tokenRing Prev Page Next Page Exit Figure 147.
Config * Physical Port Protocol Parameters Module: BladeRunner Phy. Port: 7 PHYSICAL PORT Time: 15:56 5 Jan 95 Link Protocol: tokenRing Commands: noOp Ring Speed: fourMegabits Act Mon Part: false Funct MAC Addr Mask: C00000000000 Search Port Prev Port Next Port Exit Return to the previous screen Figure 148.
11.8.2.3 Configuring Logical Port Parameters This panel allows you to configure parameters for Ethernet, token-ring and WAN logical ports. An example of this panel for an Ethernet port is shown in Figure 149. Config * Logical Port Parameters Module: BladeRunner Log.
• Encapsulation This is a read-only parameter and shows the type of encapsulation used on the physical port to which this logical port is attached. In the case of a token-ring port, this field will show tokenRing . • Attach Port and Detach Port These parameters are used to attach/detach logical ports to/from WAN physical ports.
The following sections describe the procedures used to configure the Multiprotocol Interconnect module to perform one of the following: • Transparent bridging for Ethernet and/or token-ring • Source-route transparent bridging for token-ring • Translational bridging between token-ring and Ethernet 11.
− Time-To-Delete (in seconds) For information on this parameter, refer to 11.8.5, “Filtering for Bridging Functions” on page 2 7 0 . − Time-To-Forget (in seconds) For information on this parameter, refer to 11.8.5, “Filtering for Bridging Functions” on page 2 7 0 .
If security mode is disabled , and the destination address is known, the packet is forwarded on the appropriate port. If the address is not known, the packet is sent (flooded) on all the other ports. For more information, refer to 11.8.5, “Filtering for Bridging Functions” on page 270.
Config * STP System Parameters Module: BladeRunner System Time: 17:06 5 Jan 95 STP Facility: Enabled STP Version: draft STP Domain Address: 0180C2000000 Reset Delay Time: 120 Bridge Priority: 8000 Bridge Hello Time: 400 Bridge Max Age Time: 1200 Bridge Forward Delay Time: 800 Exit Version of the Spanning Tree Protocol Figure 153.
If two bridges have the same bridge priority, the one with the lowest MAC address has higher priority. • Bridge Max Age Time Specifies the max value for the age field (in hundredths of a second) in the Hello BPDU before it is discarded by the Multiprotocol Interconnect module.
• Path Cost Mode This parameter is used by the spanning tree protocol to determine how the value of the path cost is configured. The following values can be specified for this parameter: − Manual : In this case the path cost will be taken from the Manual Port Path Cost parameter.
Config * Source Routing Port ParametersModule: BladeRunner Log. Port: 8 LOGICAL PORT Time: 17:33 5 Jan 95 Security Mode: Disabled Source Address Filtering: Disabled Custom Filtering: Disabled .
5. Configure t h e S T P Port Parameters for each token-ring port performing source-route transparent bridging, as described in 11.8.4.1, “Configuring for Transparent Bridging” on page 2 6 2 . 6. Optionally, y o u m a y configure the security and filtering parameters as described in 11.
This parameter allows you to enable/disable SNAP conversion between token-ring and Ethernet frames. When enabled, the Ethernet network is treated as an 802.3 network. When disabled, the Ethernet network is treated as an Ethernet V2 network. Note that the implication of this parameter is that the Ethernet ports can be either Ethernet V2 or 802.
Config * Filtering Database Module: BladeRunner System Page 1 Time: 14:27 6 Jan 95 MAC Address Disposition Scope MAC Address Disposition Scope #0000B528023E 1 all %090077000002 %0180C2000000 #.
− Permanent($) These are manually entered addresses which are stored in the FLASH memory. − Static (*) These are entries that have been entered manually.
To do this, each address in the database has an age assigned to it. When the address is learned, the age is set to zero. At subsequent time intervals this address is incremented.
11.8.6 Destination Address Filtering Destination address filtering allows you to use the contents of the filtering database to forward or discard frames.
Filter Test Table . Note that there is only one of these tables in each Multiprotocol Interconnect module and it contains all the test that are to be performed by the Multiprotocol Interconnect module, regardless of the ports on which these tests are performed.
This field defines the bits in the received frame, starting at the specified offset , that should be tested against the contents of the value field. Only the bits which have a value of B ′1′ in the mask will be tested.
Config * Custom Filter Statement Table Module: BladeRunner Log. Port: 1 LOGICAL PORT Page 1 Time: 14:10 9 Jan 95 Statement ID Test Name Action on Success Action on Failure 1 Frame Type Test St.
− Fwd Prio #: Forward the frame at the specified priority (#). # can be 0 t o 7 . Priority 0 is the highest priority. − Stmt #: Specifies another statement ID from the Custom Filter Statement Table, so that another test may be applied to the frame.
The following sections describe the procedures used to configure the Multiprotocol Interconnect module to perform one of the following: • IP routing • IPX routing • DECnet Phase IV routing 11.8.8 Configuring for IP Routing The Multiprotocol Interconnect module allows you to use RIP, OSPF, and static routes when used as an IP router.
Config * IP Port Address Table Module: BladeRunner System Page 1 Time: 15:35 9 Jan 95 Port IP Address IP Subnet Mask 1 9.67.46.11 255.255.255.240 1 9.67.46.44 255.255.255.240 2 9.67.46.17 255.255.255.240 Add Entry Prev Page Next Page Exit Return to the previous screen Figure 162.
An example of the IP System Parameters panel is shown in Figure 163 on page 281. Config * IP System Parameters Module: BladeRunner System Time: 15:43 9 Jan 95 IP Routing: Enabled RIP: Enabled Router ID: 9.
This parameter specifies the length of time that the module may wait for all the fragments of a fragmented IP message to be received for reassembly. If they are not received within the specified time, the datagram is discarded. Note that datagram reassembly takes place at the destination of a datagram only.
Config * IP Port Parameters Module: BladeRunner Log. Port: 1 LOGICAL PORT Time: 15:55 9 Jan 95 IP Port Routing: Enabled Disposition: discard RIP: Enabled * IP Mtu: 1492 RIP Path Cost: 1 LAN En.
that the Multiprotocol Interconnect module recognizes both types of broadcasts on the received frames regardless of the setting of this parameter. • Forward Broadcast This parameter specifies if this port will forward directed broadcast messages. Directed broadcasts have all 1 ′ s in the hostid portion of their address.
• Next Hop This is the IP address of the node that is the next stop for a packet en route to its destination address. The next hop must be directly connected to the interface for which this route is defined. • Mask This is the subnet mask associated with the destination address entry.
Config * IP Net To Media Table Module: BladeRunner System Page 1 Time: 10:50 11 Jan 95 Port Network Address Media Address Type 1 9.67.46.13 400000000001 static 1 9.67.46.33 10005A7903C7 dynamic 1 9.67.46.34 10005A7903E1 dynamic 1 9.67.46.40 0000B528023E dynamic 1 9.
Also a BOOTP client can request the code image file to be downloaded from the TFTP server. To configure the Multiprotocol Interconnect module as a Boothelper you must select Boothelper Parameter from the Protocols Menu . An example of the Boothelper Parameters panel is shown in Figure 1 6 7 .
11.8.8.1 Configuring for OSPF To configure the Multiprotocol Interconnect module to use OSPF, you must select OSPF from the Protocols Menu . The resulting panel is shown in Figure 1 6 8.
Config * OSPF System Parameters Module: BladeRunner System Time: 17:39 11 Jan 95 Area Border Router: false Router ID: 9.67.46.44 TOS Support: true Admin Status: Enabled AS Boundary Router: tru.
This parameter determines if the RIP filter table will be used for importing routes found by RIP. RIP filter table is discussed later in this section. • Import Static Routes This parameter determines if the static route filter table will be used for importing static routes.
can only be modified. There will be one entry in this table for each IP address assigned to the Multiprotocol Interconnect module ′ s ports. To modify the parameters on this panel, you must select the Modify Entry option.
This parameter specifies the number of seconds between the Hello Packets that the router sends on the interface. This interval must be the same for all the routers attached to the same network. • RtdDeadInt If a router ′ s neighbor does not see a Hello packet within this period, it will declare the router down.
Config * OSPF Area Table Module: BladeRunner System Page 1 Time: 17:41 11 Jan 95 Area ID AuthType Import AS SPF Brdr AS Brdr Area Chksum Extern LSA Runs Routers Routers LSAs Sum 0.0.0.0 1 true 10 0 1 3 025393 Add Entry Prev Page Next Page Exit Return to the previous screen Figure 171.
This parameter is read-only and contains 32-bit unsigned sum of the Link-state-advertisement ′ s link-state checksum contained in this area ′ s link-state database. This sum can be used to determine if there has been a change in a router ′ s link-state database and to compare the link-state database of two routers.
from the OSPF Menu . The resulting panel is shown in Figure 173 on page 295. Config * OSPF Address Range Table Module: BladeRunner System Page 1 Time: 12:04 11 Jan 95 Area ID Range Net Range Mask 0.0.0.0 9.67.46.0 255.255.255.000 Add Entry Prev Page Next Page Exit Return to the previous screen Figure 173.
Config * OSPF Interface Metric Table Module: BladeRunner System Page 1 Time: 17:44 11 Jan 95 IP Address Port TOS Metric 9.67.46.17 0 0 10 9.67.46.44 0 0 10 9.67.46.94 0 0 10 Add Entry Prev Page Next Page Exit Return to the previous screen Figure 174.
Config * OSPF Virtual Interface Table Module: BladeRunner System Page 1 Time: 17:44 11 Jan 95 Area ID Neighbor TransDelay RetransInt HelloInt RtrDeadInt Add Entry Prev Page Next Page Exit Return to the previous screen Figure 175.
8. Define t h e other OSPF routers which are neighbors to th e Multiprotocol Interconnect module. To s o so, select OSPF Neighbors from the OSPF Menu panel.
This field is read-only and shows the current length of the retransmission queue. 9 . Y o u ma y define the filters for importing R I P discovered routes by selecting OSPF RIP Filter Table from the OSPF Menu . An example of the resulting panel is shown Figure 1 7 7 .
Config * OSPF Rip Convert Table Module: BladeRunner System Page 1 Time: 17:46 11 Jan 95 IP Address IP Mask Hop Count Metric 9.67.46.0 255.255.255.240 1 10 9.67.46.0 255.255.255.240 2 20 9.67.46.0 255.255.255.240 3 30 9.67.46.0 255.255.255.240 4 40 9.
Config * OSPF Rip Default Convert TablModule: BladeRunner System Page 1 Time: 17:47 11 Jan 95 Hop Count Metric 11 0 22 0 33 0 44 0 55 0 66 0 77 0 88 0 99 0 10 100 Modify Entry Prev Page Next Page Exit Return to the previous screen Figure 179.
Config * OSPF Static Filter Table Module: BladeRunner System Page 1 Time: 17:47 11 Jan 95 IP Address IP Mask TOS Action Add Entry Prev Page Next Page Exit Return to the previous screen Figure 180.
Config * OSPF Static Convert Table Module: BladeRunner System Page 1 Time: 17:48 11 Jan 95 IP Address IP Mask TOS Hop Metric Modify Entry Prev Page Next Page Exit Return to the previous screen Figure 181.
Config * OSPF Static Default Convert TablModule: BladeRunner System Page 1 Time: 17:49 11 Jan 95 TOS Hop Count Metric 01 1 0 02 2 0 03 3 0 04 4 0 05 5 0 06 6 0 07 7 0 08 8 0 09 9 0 0 10 100 Modify Entry Prev Page Next Page Exit Return to the previous screen Figure 182.
Config * IP Security Table Module: BladeRunner List: 1 Page 1 Time: 12:02 18 Jan 95 ID Source Source Destination Destination Action Prot Address Mask Address Mask 1 9.
• Source Address This is the source address of the IP datagram against which the source address of the IP datagram currently being processed is compared.
Config * IP Security Access List Module: BladeRunner Page 1 Time: 12:07 18 Jan 95 List Transmit Action on Receive Action on ICMP No. Check No Match (Tx) Check No Match (Rx) Generation 1 Enable.
• ICMP Generation This field specifies whether an ICMP Destination Unreachable message is forwarded to the source address on any IP datagram that is discarded because of security checks. Note: There is only one IP security access list per Multiprotocol Interconnect module.
4. Configure t h e system-wide I P X parameters by selecting IPX System Parameters from the IPX Menu . An example of the resulting panel is shown in Figure 186 on page 30 9 .
Config * IPX Port Parameters Module: BladeRunner Log. Port: 1 LOGICAL PORT Time: 11:00 13 Jan 95 IPX Port Routing: Enabled Host Number: 08008F4001A0 Disposition: discard Network Number: 00000001 Interface Delay: 1 Encapsulation: ieee802.
• Interface Delay This is the estimated time taken for an IPX packet containing 576 bytes of data to traverse the hop between the interface and the associated link. This parameter is displayed in milliseconds and is used to determine the best route to a destination address.
Allows you to display information about the physical ports currently installed on your module. • Physical Port Protocol Statistics Displays different statistical information for each port, depending on the type of the interface and the link protocol configured for the port.
Displays information about various link state advertisements sent and received by the Multiprotocol Interconnect module. • OSPF Link State Database Table Displays the link state database in the Multiprotocol Interconnect module. This information includes the area and the router identifier from which the link-state advertisements were received.
314 8260 Multiprotocol Intelligent Switching Hub.
Appendix A. Power Requirements for 8250/8260 Modules A.1 Power Requirements for 8250 Ethernet Modules Table 41. Power Requirements for 8250 Ethernet Modules Module Feature Code Type Description # of S.
A.2 Power Requirements for 8250 Token-Ring Modules Table 42. Power Requirements for 8250 Token-Ring Modules Module Feature Code Type Description # of Slots Used Power Consumption (watts by voltage typ.
A.4 Power Requirements for 8250 Internetworking Modules Table 44. Power Requirements for 8250 FDDI Modules Module Feature Code Type Description # of Slots Used Power Consumption (watts by voltage type) +5 +12 -12 -5 -2 Ethernet Bridge 3828EB Ethernet 2 ports Two 20 7.
318 8260 Multiprotocol Intelligent Switching Hub.
Index Numerics 18-Port Active Module Switching Module 18 0 Configuration 18 0 18-Port Active Per-Port Switching Module 174 address-to-port-mapping 17 4 automatic speed detection 17 4 backplane segment.
Address-to-Port-Mapping (continued) support for MAC-less stations 163, 166 Alarm Group 1 9 9 analog collision detection 19 Statistics Collection 19 applying power 8250 modules 84, 85 8260 modules 82 A.
Distributed Management Module (DMM) 10, 38 DMM front panel 39 DMM alert_filter 57 DMM alerts 57 authentication 5 7 change 5 7 hello 5 7 DMM Command DMM community table 56 DMM Configuration changing pa.
E-MAC Configuration (continued) Set Module Monitor_Contention 67 Set Module Network 65, 68 Show Module 65, 68 E-MAC Monitoring Functions 213 RFC 1271 2 13 RMON MIB 213 Eavesdropping Protection 12 3 EC.
Ethernet 24-Port 10BASE-T Module (continued) Security Card support 99 side view 10 2 simultaneous segments 99 Telco-type connector 99 usage 1 04 UTP backbone 99 Ethernet 40-Port 10Base-T module 9 Ethernet LAN Overview 97 802.
Intelligent Power Management (continued) Vital Product Data (VPD) 29 Intelligent Power Subsystem 6 Intrusion protection 12 2 diasbling ports 121 jamming ports 12 1 reporting intruders 12 1 IP Addressi.
Multiprotocol Interconnect Module (continued) processor 2 4 0 programming power requirements 24 3 RIP implementation 24 5 Router Engine Module (REM) 240 routing functions 24 4 SNMP support 240, 250 so.
RMON Support (continued) using T-MAC 230 S Security Address Table autolearning 12 1 entries 12 1 manual procedure 12 1 size 121 Serial Control Interface (SCI) 27 Serial Line Interface (SLIP) default g.
Token-Ring Network Parameters (continued) ring speed 173 splitter support 17 4 token-ring path 19 token-ring pins on the Enhanced TriChannel 19 clock-in 19 clock-out 19 data-in 19 data-out 19 token-ri.
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ITSO Technical Bulletin Evaluation RED000 International Technical Support Organization 8260 Multiprotocol Intelligent Switching Hub May 1995 Publication No. GG24-4370-00 Your feedback is very important to help us maintain the quality of ITSO Bulletins.
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Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il IBM 8260 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del IBM 8260 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso IBM 8260 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul IBM 8260 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il IBM 8260, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del IBM 8260.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il IBM 8260. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo IBM 8260 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
