Manuale d’uso / di manutenzione del prodotto 3CBLSF26H del fabbricante 3Com
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Baseline Switch 2226-SFP Plus Baseline Switch 2426-PWR Plus Baseline Switch 2250-SFP Plus User Guide 3CBLSF26H 3CBLSF26PWRH 3CBLSF50H Part No.: 10017022 Manual Version: 6W104 www.
Copyright © 2008-2009, 3Com Co rporation. All right s reserved. No part of this documentation may be reproduced in any form or by any means or u sed to make any derivative work (such as translation, transformation, or adaptation) without wr itten permission from 3Com Corporation.
About This Manual Organization 3Com Baseline Switch User Gu ide is organi zed as follows: Chapter Contents 1 Getting Started This chapter cont ains introductory inf ormation about the installation of the switch a nd how they can be used in your network.
Convention Description # A line starting with the # sign is comments. GUI conventions Convention Description Boldface Window names, button na mes, field names, and menu items are in Boldface. For example, the New User window appears; click OK . > Multi-level menus are separated by a ngle brackets.
i Table of Contents 1 Getting Started ·················································································.
ii Creating VLANs ···························································································.
iii Save Confi guration ························································································.
iv Contact Us ·····························································································.
1-1 1 Getting Started z This manual applies to the Baseline S witch 2250-SFP Plus, Baselin e Switch 2226-SFP Plus, and Baseline Switch 2426 -PWR Plus, which are hereinafter referred to as the switch. z This manual takes the Web interfaces of the Ba seline Switch 2426-PWR Plus as an example.
1-2 Feature Description Forwarding Modes Store and Forward. Duplex Modes Half and full duplex on all front panel ports. Auto MDI/MDIX Supported on all ports. If fiber SFP transceivers are used, Auto MDIX is not supported. Flow Control In full duplex operation all ports are sup porte d.
1-3 Figure 1-3 Baseline Switch 2250 -SFP Plus 50 -Port—front panel. LED Status Indicators The Switch provides LED i ndicators on the front pa nel f or your convenience to monitor the switch. T able 1-2 describes the meaning s of the LEDs. Table 1-2 Description on the LEDs of the Switch LED Status Description Green The switch starts normally.
1-4 LED Status Description OFF The link has not been establish ed, eithe r nothing is connected to the port, or there is a problem: z Check that the attached device is po wered on. z Check that the cable or fiber is the correct type and is not faulty.
1-5 Specification 2226-SFP 2426-PWR 2250-SFP Operating humidity (noncondensi ng) 20% to 85% Storage humidity (noncondensi ng) 10% to 90% Installing the Switch This section cont ains information that you need to install and set up the switch.
1-6 z Air flow around the unit and throug h the vents on th e side of the ca se is not rest ricted (3Co m recommends that you provi de a minimum of 25 mm (1 in.) clearance). z The air is as free from du st as po ssible. z Temperature operating limit s are not likely to be exceeded.
1-7 Figure 1-4 Rack Mounting the Unit 4) Repeat steps 2 and 3 for the other side of the unit. 5) Insert the unit into the 19-inch rack and secure with sui t able screws (not provided). 6) Reconnect the cables. Placing Units On Top of Each Other If the switch units are free-st anding, up to six uni t s can be placed one on top of the other .
1-8 Checking for Correct Operation After you power on the switch, it automatically perf orm s a power-on self-test (POS T). During POST , the Power LED on the front pa nel of the swit ch flashes green. When POST is com plete, the Power LED turns green.
1-9 Approved SFP Transceivers The following list of approved SFP transceivers is correct at the time of publication: z 3CSFP91 SFP (SX) z 3CSFP92 SFP (LX) T o access the latest list of approved SFP transceiver s for the switch on the 3Com W eb site, enter this URL into your Internet br owser: http://www .
1-10 SFP transceivers are keyed an d can be properly inse rted only one way. If the tra nsceiver does not click when you insert it, remove it, turn it over, and reinsert it. 3) Remove the plastic prot ective cover, if fitted. 4) Connect the fiber cable.
1-11 Automatic IP Configuration using DHCP When you use the automatic IP confi guration method, the switch tries to obtain its IP information without requesting user intervention from a DHCP server on the network.
2-1 2 Connecting To the Web Interface The switch h as a built-in W eb interface that you can use to set the u ser password, chang e the IP address that is assigned to the switch , and configu r e its advan ced settings. This chapter introd uces the setting the menu items an d buttons that are availa ble on the W eb interface.
2-2 Default User and Password If you intend to manage the switch o r to chang e the d e fault p a ssword, you must log in with a v alid use r name and pa ssword.
2-3 Figure 2-2 Switch Screen Layout Table 2-3 Available Menu Items Menu Item Description Device Summary Contains tabs that allow you to: z Provide a summary of the switch’s basic settings and versions of current components. z Display the description for each col or coded port.
2-4 Menu Item Description VLAN Contains tabs that allow you to: z Create a VLAN. z Modify a VLAN. z Modify VLAN membership for a port. z Rename a VLAN. z Remove a VLAN. z Display VLAN membership for a port. z Display VLAN information. Spanning Tree Allows you to configure a Spanning Tree Protocol.
2-5 Menu Item Description Administration Contains tabs that allow you to: z Display selected port information for the entire switch. z Display individual port information. z Modify the port settings. Link Aggregation Contains tabs that allow you to: z Display link aggregation summary.
3-1 3 Configuring the Switch Configuring System Access Network administrators can define user n ame, pass word, and acce ss level for users using the System Access Interface. The Multi-Session Web feature is enable d on switch and allows 10 users to be created and access the switch con c ur rently .
3-2 The System Access Setup Page cont ains the following fields: Table 3-1 System Access Setup Page item description Item Description User Name Defines the user name. The default value is admi n. Access Level Defines the user a ccess level. The lowest user access level i s Monitor and the highest is Management.
3-3 Removing System Access The System Access Remove Page allows network adm inistrator s to remove users from th e System Access Interface. The last user with management access may not be d eleted. Click Administration > System Acc ess > Remove .
3-4 Table 3-3 System Access Summary Page item descriptio n Item Description User Name Displays the user name. Access Level Displays the user access level.
3-5 Configuring ARP Settings The Address Resolution Protocol (ARP) conve rts IP addresses into physical addre sses, and map s the IP address to a MAC address. ARP allows a host to communicate with other host s when only the IP addresses of it s neighbors are known.
3-6 Figure 3-7 ARP Entries Remove Page The ARP Entries Remove Page cont ains the following fields: Table 3-6 ARP Entries Remove Pa ge item description Item Description Clear ARP Table Entries Specifies the types of ARP entries t hat are cleared. The possibl e values are: z None: Maintains the ARP entries.
3-7 Figure 3-8 ARP Settings Summary Page The ARP Settings Sum m ary Page cont ains the following fields: Table 3-7 ARP Settings Summary Page item description Item Description Interface Indicates the VLAN for which ARP parameters are d efined. IP Address Indicates the IP address, whic h is associ ated with the MAC Address.
3-8 Adding MAC Addresses to the Address Table The Address T able Add Page allows the network m anager to assign MAC addresse s to ports with VLANs. Click Monitoring > Addres s Ta b l e > Add .
3-9 Figure 3-10 Address Table Aging Time Setup Page Removing MAC Addresses for the specific port The Port Remove Page allows the network manager to remove MAC Addres ses for the specific port from the Address T able. Click Monitoring > Addres s Ta b l e > Port Remove .
3-10 1) Select entries from the address table to be rem oved. 2) Click Remove . Viewing Address Table Settings The Address T able Summary Page displays the current MAC add ress t able configuration. Click Monitoring > Addres s Ta b l e > Summary .
3-11 Figure 3-14 Port Summary Page The Port Summary Page cont ains the following fields: Table 3-10 Port Summary Page item description Item Description State Filters the list of MAC addresses displayed acco rd ing to the type of MAC address configuration.
3-12 Defining Port Settings The Port Setup Page allows netwo r k manag ers to co nfigure port parameters for specific port s. Click Port > Administration > Setup .
3-13 z Before manually setting a port to full-duplex mode, verify that the device connected to the port is also manually set to the same speed an d duplex setting. If connecting link partners are left to auto- negotiate for a link manually set on this switch to full-duplex, they will al ways negotiate to half-duplex, resulting in a duplex mismatch.
3-14 Item Description Speed Displays the configured rate for t he port. The port type determi nes what speed setting options are available. Port spe ed s can only be configured when auto negotiation is disabled. The p ossible field values are: z Auto: Use to automatically configure the port.
3-15 Defining Port PoE The Port PoE Setup Page allows the network ma nag er to configure port PoE settings. Click Port > PoE > Setup . The Port PoE Setup Page open s.
3-16 Figure 3-19 Port PoE Summary Page The Port PoE Summary Page cont ains the following fields: Table 3-14 Port PoE Summary Page item description Item Description State Indicates the power source status. The p ossible field values are: z On: Indicates that the power supply unit is functioning.
3-17 Click Port > Stat i st i cs > Summary . The Port S tatistics Summary Page opens. Figure 3-20 Port Statistics Summary Page The Port S tatistics Summary Page cont ains the following fields: T.
3-18 Item Description Jabber s Displays the total number of receive d pa ckets that we re longer than 9216 octets. This number excludes fram e bi ts, but includes FCS octets that had either a bad Frame Check Sequence (FCS) with an integral numb er of octets (FCS Error) or a bad FCS with a non-int egral octet (Alignment Error) number.
3-19 z Viewing VLAN Port Details Creating VLANs The VLAN Setup Page allows the network admini strator to create or rename VLANs. Click Device > VLAN > Setup .
3-20 Figure 3-22 Modify VLAN Page The Modify VLAN Page cont ain s the following fields: Table 3-17 Modify VLAN Page item description Item Description Select a VLAN to modify Selects a VLAN to modify its settings. Select member ship type Selects the membership type for each port on the VL AN.
3-21 Figure 3-23 Modify Port VLAN Page The Modify Port VLAN Page contain s the following fields: Table 3-18 Modify Port VLAN Page item description Item Description Select member ship type Selects the membership type for each port on the VL AN. The po ssible field values are: z Untagged: Indicates the interface is an untagg ed member of the VLAN.
3-22 Figure 3-25 VLAN Remove Page Viewing VLAN Details The VLAN Detail Page provides information and global p arameters on VLANs configured on the system.
3-23 Table 3-19 VLAN Detail Page item description Item Description Select a VLAN to Display Selects a VLAN to be disp lay its settings Membership type Displays the membership type for each VLAN. The possible field v alues are: z Untagged: Indicates the interface is an untagg ed member of the VLAN.
3-24 Table 3-20 VLAN Port Detail Page item description Item Description Untagged Membership Indicates the port is an untagge d member of the VLAN. Tagged membership Indicates the port is a tagged member of a VLAN. VLAN tagge d frame s are forwarded by the interface.
3-25 z Among the ports in an aggregation group that are in up state, the system det ermines the mater port with one of the following settings being the highest (in descending order) as the master port: full duplex/high speed, full duplex/low speed, half duplex /high speed, half duplex/low speed.
3-26 Click Port > Link Aggregation > Creat e . The Link Aggregation Create Page opens. Figure 3-28 Link Aggregation Create Page The Link Aggregation Create Page inclu des the follo wing fields: Table 3-21 Link Aggregation Create Page item de scription Item Description Enter Aggregation Group ID Defines the grou p ID.
3-27 Figure 3-29 Link Aggregation Modify Page Removing Link Aggregation The Link Aggregation Remove Page allows the net work man ager to remove group IDs cont aining member ports. Click Port > Link Aggregation > Rem ove . The Link Aggregation Remove Page opens.
3-28 Table 3-22 Link Aggregation Summary Page item descri ption Item Description Group ID Displays the Link Ag gre gat ed Group ID. The field range is 1 -6. Type Displays the ty pe of link aggregation for the Group ID. The possible field value is Static or LACP.
3-29 Figure 3-33 LACP Summary Page The LACP Su mmary Page contains the followi ng fields: Table 3-24 LACP Summary Page item description Item Description Port-Priority Displays the LACP priority value for the port. LACP Timeout Displays the administrative LACP timeout.
3-30 network segment. All other port s are blocked, whic h means that they are pr evented from forwarding traffic. The device support s the following STP version s: z Classic STP: Provides a single path b etween end stations, avoidin g and elimi nating loops.
3-31 Table 3-25 STP Global Setup Page item description Item Description Spanning Tree State Defines whether STP is enabled on the swit ch. The possible field values are: z Disable: Disables STP and RSTP on the switch. z Classic: Enab les STP on the switch.
3-32 Modifying STP Interface Parameters The STP Interface Para meters Modify Page allows network m anagers to modify STP parameters to specific interfaces. Click Device > S panning T ree > Modify . The STP Interface Parameters Modif y Page opens.
3-33 Item Description Path Cost Defines the port contributio n to the root path cost. When Default Path Cost is disabled, you can configure it; when Def ault Path Co st is enabled, you can not configure it , and the possible field values are: z 65535: Indicates Path Cost Default Values i s short.
3-34 Item Description Root Guard Indicates if the interface is acting as the root port of the switch. The possible field values are: z Enabled: Indicates Root Guard is enabl ed on the po rt z Disabled: Indicates Root Guard is disabl ed on the port. Port State Displays the current STP state of a por t.
3-35 Configuring IGMP Snooping This section cont ain s information for configuring IGMP Snooping. When IGMP Snooping is enable d, all IGMP packet s are forwarded to the CPU. The CP U analyzes the incoming pa ckets and determines: z Which ports want to join which Multica st groups.
3-36 Item Description Select VLAN ID Specifies the VLAN ID IGMP Snooping Status Defines whether IGMP sn oopin g is ena bled o n the V LAN. The possible fiel d values are: z Enabled: Enables IGMP Snooping on the VLAN. z Disabled: Disables IGMP Snooping on the VLAN.
3-37 Table 3-29 MAC Based ACL Setup Page item de scri ption Item Description Selection ACL Selects an existing MAC-base d ACL to which rules are to be added. Create ACL Defines a new user-defined MAC-ba sed Access Control List. The options are as follows: z ACL Priority: Sets the ACL priority.
3-38 T o define a new MAC-based ACL rule: 1) Select Selection ACL. 2) Select the ACL from the list. 3) Define the fields for the new ACL rule. 4) Click Apply . Modifying MAC Based ACL The MAC Based ACL Modify Page allows the network administrator to modify an existing MAC-based ACL rule.
3-39 Table 3-30 MAC Based ACL Remove Page item description Item Description ACL Name Selects a MAC-based ACL for removal. Remove ACL Enables the ACL to be removed. T o remove MAC-based ACL: 1) Select the ACL Name to be removed 2) Check Remo v e ACL. 3) Click Remove .
3-40 Item Description CoS Classifies traf fic based on t he CoS tag value. CoS Mask Displays the CoS mask used to filter CoS tags. Ethertype Provides an identifier that differ entiates between various type s of proto c ols. Action Indicates the ACL forwarding actio n.
3-41 Item Description Protocol Defines the protocol in the rule to which the packet is matched. The possible fields are: z Select from List: Selects a protocol from a list by whi ch packets are matched to the rule. z Protocol ID: Selects a protocol ID from a list by which packets are matched to the rule.
3-42 1) Select Selection ACL. 2) Select the ACL from the list. 3) Define the fields for the new ACL rule. 4) Click Apply . Modifying IP Based ACL The IP Based ACL Modify Page allo ws the network administrator to modify IP Base d ACL rules. Click Device > ACL > IP Based ACL > Modify .
3-43 Table 3-33 IP Based ACL Remove Page item description Item Description ACL Name Selects an IP-base d ACL for re moval. Remove ACL Enables the ACL to be removed. T o remove an IP-based ACL: 1) Select an ACL Name to be removed. 2) Check Remo v e ACL.
3-44 Item Description Source IP Address Matches the source IP address to whi ch packets are addressed to the ACL. Source Mask Indicates the source IP addre s s mask. Destination IP Address Matches the destin ation IP address to which p ackets are addressed to the ACL.
3-45 Removing ACL Binding The ACL Binding Remove Page allows the network administrator to remove u se r-d efined ACLs from a selected interface. Click Device > ACL > ACL Binding > Remove .
3-46 Table 3-37 ACL Binding Summary Page item description Item Description MAC-based ACL Displays the MAC based AC L to which the interface is assigned. IP-based ACL Displays the IP based AC L to which the interface is a s signed Configuring QoS Quality of Service (QoS) provides the ability to implement QoS and priority queuing within a network.
3-47 Table 3-38 CoS Setup Page item descri ption Item Description QoS Mode Specifies if QoS is enabled on the switch . The possible values are: z Disabled: Restores the switch factory defaults for QoS values and disables configure QoS values on the switch.
3-48 Figure 3-51 Queue Setup Page The Queue Setup Page co nt ains the following fields: Table 3-40 Queue Setup Page item description Item Description HQ-WRR This highest queue is tran smitted first if any packets are in the hi ghest queue. When the highest queue i s exha usted, the re maining queues are served by WRR.
3-49 Table 3-41 CoS to Queue Setup Page item descript ion Item Description Restore Defaults Restores the switch factory defaults for mapping CoS values to forwarding queues. Class of Service Specifies the CoS priority tag values , where 0 i s the lowest and 7 is the highest.
3-50 Figure 3-54 DSCP to Queue Setup Page The DSCP to Queue Setup Page contai ns the follo wing fields: Table 3-43 DSCP to Queue Setup Page item description Item Description Restore Defaults Restores the switch facto ry defaults for mapping DSCP values to a traffic forwarding queue.
3-51 Table 3-44 DSCP to Queue Summary Page item descriptio n Item Description DSCP Displays the i ncoming packet’s DSCP value. CoS Indicates the CoS value forwarding queue to which the DSCP priority is mapped.
3-52 Figure 3-57 Bandwidth Setup Page The Bandwidt h Setup Page contains the followin g fields: Table 3-46 Bandwidth Setup Page item description Item Description Enable Ingress Rate Limit Enables setting an Ingre ss Rate Limit. Ingress Rate Limit Ingress Rate Limit Defines the ingress traffic limit for the port.
3-53 Figure 3-58 Bandwidth Summary Page The Bandwidt h Summary P age contains the following fields: Table 3-47 Bandwidth Summary Page item description Item Description Status Indicates the ingress rate limiting status on the interfa ce. The p ossi ble field values are: z Enabled: Ingress rate limiting is enabled on the interfa ce.
3-54 There are two operational modes for IP Phones: z IP phones are configured with VLAN-mode as enabl ed, ensu ring that tagged packets are u sed for all communications. z If the IP phone’s VLAN-mode is disabl ed, the phone uses untag ged packets. The phone use s untagged packets while retrieving the initial IP address through DHCP.
3-55 Defining Voice VLAN Global Settings The V oice VLAN Setup Page provides i nformation for enabling and defining V oice VLAN globally on the switch.
3-56 Table 3-50 Voice VLAN Port Setup Page item description Item Description Voice VLAN Port Mode Specifies the Voice VLAN mode. The possible field v alues are: z No Changes: Maintains the current Voi c e VLAN port settings. z None: Indicates that the selected p ort will not be added to a Voice VLAN.
3-57 Figure 3-63 Voice VLAN OUI Summary Page Viewing Voice VLAN The V oice VLAN Summary Page cont ains information about the V oice VLAN currently enabled on the switch, including the po rts enabl ed an d included in the V oice VLAN. Click Device > QoS > Vo I P T raffic Setting .
3-58 Configuring SNMP Simple Network Management Protocol (SNMP) p rov i des a method for managing network devi ces. The switch support s the followi ng SNMP versi ons: z SNMP version 1 z SNMP version 2c The SNMP a gent s maintain a list of variables, which are used to m anag e the switch.
3-59 Item Description Standard Selects pre-defined comm unity strings. The possible field values are: z Public: Displays the pre-def ined public community string name. z Private: Displays the pre-defi ned private community string name. User Defined Defines a u se r-d efined community string name.
3-60 Figure 3-67 SNMP Traps Setup Page The SNMP T r aps Setup Page co ntains the following fields: Table 3-53 SNMP Traps Setup Page item descriptio n Item Description Recipients IP Address Defines the IP address to which the traps are sent. Community String Defines the communi ty string of the trap manager.
3-61 Configuring LLDP LLDP Overview The Link Layer Discovery Protocol (LL DP) operates on the data l ink layer . With LLDP , a device can store and maintain inform ation about itself and the dire ctly-connected neighbor devices for network administrator s t o che ck link status.
3-62 Item Description Transmit Interval Set the interval for sending LLDPDUs. A port operating in TxRx mode or Tx mode sends LLDPDUs to its dire ctly connected device periodi cally. By default, the interval is 30 seconds. TLL Hold Multiplier Set the TTL multiplier.
3-63 The Port-Level LLDP Parameters Page cont ains the following fields: Table 3-55 Port-Level LLDP Paramete rs Pag e item description Item Description LLDP Enable/disable LLDP o n a port. Two o ptions are available: z Enabled: Enables LLDP on the port.
3-64 Item Description IEEE 802.3 The IEEE 802.3 defined LLDP TLVs supported by the device include the following: z MAC/PHY: The rate, duplex mode, and speed auto-negotiation state of the port.
3-65 Table 3-56 Global LLDP Information and Re ceive d LLDP Information Page item description Item Description Added Neighbor Total number of discovered neighbors Deleted Neighbor Total number of dele.
3-66 Figure 3-72 Port-Level LLDP Information Page Select a port, and then the LLDP inform ation of the port will be displayed i n the Summary box. The displayed information inclu des LLDP st atus and st atist i cs of the port and the st atus of the TL Vs sent by the port.
3-67 Defining 802.1X Authentication The 802.1X Setup Page cont ains information for co nfiguring 802.1X glob al settings on the switch and defining specific 802.1X setting for each port individ u ally . Click Security > 802.1X > Setup . The 802.
3-68 Item Description Guest VLAN Specifies whether the Guest VLAN is enabled o n the port. The po ssible field values are: z Enabled: Enables using a Guest VLAN for unauthorized port s. If a Guest VLAN is enabled, the una uthorized port automatically join s the VLAN selected from the Gues t VLAN ID dropdown list.
3-69 Item Description Reauthentication Period Displays the time span (in se conds) in which the selected port is reauthenticated. The field default is 36 00 seconds.
3-70 Configuring LDB If your switch is not enabled with an advanced authen tication method, like RADI US, for authe ntication, you can use the local database (LDB) fe ature to perform local authentication (port-ba sed authentication).
3-71 Item Description Sleep Period Set the authentication sleep period. 5 minutes by default Note: Within the authentication sleep pe riod, no users on this port are allowed to try to pass authentication.
3-72 Figure 3-79 Configure a user account z To add a user account, click Add . z To modify the password of a user, select the user, ente r a new password in the P assword text box, and click Modify . Displaying LDB On this page, you can view the LDB mod e, stat e and user pa ssing a uthentication on each port.
3-73 Item Description Current Port State Displays the current state of the port. z NORMAL: The user on the port pa ssed t he authentication. z BLOCK: The port is in the initial state after the LDB feature is enabled or the port is aged out. z SLEEP: The number of the user’s authentication attempt s exceeded the preset maximum value.
3-74 Table 3-62 Broadcast Storm Setup Page item de scription Item Description Broadcast Mode Defines whether forwardin g broadcast packet type is enabled on the interface. The possible field values are: z Disabled: Disables broadcast control on the selected port.
3-75 z Configuring System Time z Save Configuration z Resetting the Switch Viewing Basic Settings The Device Summary Page, which automatically load s after you log on to the W eb interface, provides a snapshot of the switch’ s basic settings and versions of current co mponents.
3-76 Item Description Poll Now Enables polling the ports for po rt inform ation including speed, utilization and port status. Viewing Color Keys The Color Key Page provi des information regardin g the RJ45 or SFP port status on the swi tch. The various colors key indicate the port st atus, speed and link of a selected port.
3-77 Figure 3-85 System Name Page The System Name Page include s the followi ng fields: Table 3-66 System Name Page item description Item Description System Name Defines the user-defined switch n ame. The field length is 0-30 characters System Location Defines the location where the system is currently running.
3-78 Figure 3-86 System Time Setup Page The System T ime Setup Page cont ains the following fields: Table 3-67 System Time Setup Page item description Item Description Current Time Displays the current time in Mon-Day-Year Hou r:Min: Sec. Time zone Local Time zone from GMT in which switch is operating.
3-79 Click Save Configuration . The Save Configuration Page opens. Figure 3-87 Save Configuration Page Click OK. The config uration is saved. Resetting the Switch The Reset Page restores the switch factory default s.
3-80 z Running Configuratio n File: Contains all configur ation file comm ands, as well as all commands entered during the current sessi on. After the switch is powered down or rebooted, all comm ands stored in the Running Configuration file are lo st.
3-81 Figure 3-90 Restore Files Page The Restore Files Page cont ains the following fields: Table 3-69 Restore Files Page item description Item Description Download via TFTP Enables to download files via TFTP. Download via HTTP Enables to downlo ad files via HTTP.
3-82 Item Description TFTP Server IP Address Specifies the TFTP Server IP A ddress from which the image files are downloaded. Source File Name Specifies file name for the downloaded image file. Click Bro w se to locate the image file on your computer.
3-83 Table 3-72 System Log Severity Levels Severity Level Message Emergency Highest (0) The system is not functioning. Alert 1 The system needs immedi ate attention. Critical 2 The system is in a critical state. Error 3 A system error has occurred. Warning 4 A system warning has occurred.
3-84 Table 3-73 Logging Setup Page item description Item Description Enable Logging Specifies if device local logs for Ca che and servers are enabled. Console logs are enabled b y default. Severity level: Specifies the minimum severity level for which a message will be logged.
3-85 Table 3-74 Logging Displ ay Page item description Item Description Save Preview Saves the displayed Log table to a Web (html) page. Clear Logs Clears all logs Log Time Displays the time at which the log was generated. Severity Displays the log severity.
3-86 Table 3-75 Port Mirroring Setup Page item description Item Description Select port type Defines the monitor port (destination port) o r mirror port (source port).
3-87 Figure 3-97 Cable Diagno stic Pag e 2) Select a port to be tested. 3) Click Apply . The test results of the port are di spl a yed in the textbox. Viewing Cable Diagnostics The Cable Diagnostics Summary Pag e displays inform ation on T est Result, Cable Fault Dist ance, or Last Update for every port on the switch.
4-1 4 Troubleshooting This chapter list s some issues that you may encounter while inst alling, using, and managi ng the switch, with suggeste d courses of corrective act ion to take. If you encounter an issue that is not listed here and you can not solve it, check the 3Com Knowledgebase at http://k nowledgebase.
4-2 Configure a new user Y ou can use localuser co mmand to configure a new user through the Console Port (see CLI Reference Guide). Forgotten Static IP Address If you forget the static IP a ddress that you assigned to the switch, you can use display ip command through the Console Port (see CLI Reference Guide).
4-3 All ports appear to show continual activity. There may be broadcast storms on the network. Remove port connection s one at a time, waiting a few seconds betwee n each port. If the LEDs go off af te r removing a port conne ction, the device that was connected to that port is introducin g an excessive amount of broadca st frames to the network.
5-1 5 CLI Reference Guide This chapter describes usi ng the Command Line Interface (CLI) to manag e the switch. The switch i s managed through the CLI from a direct conne ction to the switch co nsole port.
5-2 CLI Features Online Help CLI provides two types of online help: co mplete onli ne help and partial online h elp. They assist you with your configuration. Complete online help Enter a "?" character in any view on your terminal to display all the comman ds available in the view and their brief descriptions.
5-3 the keywords that match t he input characters will be displ ayed on the terminal screen if the input characters match more than one keywo r d. Command History CLI can store the latest executed commands as hist ory comman ds so that users can recall and execute them again.
5-4 Error message Description found at '^' position. An error is found at '^' position. Command Edit The CLI provides basic command edit functions and su pports multi-line e diting. The maximu m number of characters a command can co nt ain is 254.
5-5 Example # Display the IP addre ss inf ormation about the switch. <Command-Line> display ip Vlan-interface1 current state: UP Line protocol current state : UP Hardware address is 0800-1234-5656 Internet address is 192.
5-6 display version Syntax display version View User view Parameter None Description Use the dis pla y ver si o n command to display the system information (such as the version information ) about the switch. Example # Display the system information about the switch.
5-7 undo ip address dhcp-alloc View User view Parameter None Description Use the ip address dhcp-alloc command to co nfigure the switch to obtain a n IP address through DHCP . Use the undo ip address dhcp-alloc command to cancel the con figuration. Example # Configure the switch to obtain an IP address through DHCP .
5-8 Parameter name: Web u s er name, which ranges from 1 to 8. pass wor d: W eb user password, whi c h ranges from 1 to 8. level: Web u ser level, which ranges from 0 to 1.0 is gue st, 1 is admin. Description Use the localuser command to configure a W eb user for the switch.
5-9 View User view Parameter interface-number : Ethernet port number Description Use the management-vlan port command to add Ethernet port s of the switch to the management VLAN. By default, all Ethernet port s of a swit ch belong to management VLAN 1.
5-10 Example # Check the reachability of the hos t with IP address 192.168.0.100. <Command-Line> ping 192.168.0.100 PING 192.168.0.100: 56 data bytes, press CTRL_C to break Reply from 192.168.0.100 : bytes=56 sequence=1 ttl=255 time = 1ms Reply from 192.
5-11 Parameter None Description Use the reboot command to restart the switch. Example # Resta r t the switch. <Command-Line> reboot This will reboot device. Continue? [Y/N] restore Syntax restore default View User view Parameter None Description Use the restore command to reset the switch to factory default s .
5-12 Example # Save current configuration of the switch. <Command-Line> save This will save the configuration in the FLASH memory Are you sure?[Y/N]y Now saving current configuration to FLASH memory Please wait for a while.
6-1 6 Obtaining Support for Your Product Register Your Product W arranty and other service benefit s start from the date of purchase , so it is important to regi ster your product quickly to ensure you get full use of the warr anty and other service benefit s available to you.
6-2 z Product model name, part number, and se rial number. z Proof of purchase, if you have not pre-re gistered your produc t. z A list of system hardware and software, including revision level. z Diagnostic error mess ages. z Details about recent configuratio n ch anges, if applicable.
7-1 7 Safety Information Important Safety Information Please refer to the safety information found in the 3Com Switch Fam ily Safety and Regulatory Information manual included with this product. Y ou can find the 3Com Switch Fam ily Safety and Regulatory Information manual that was inclu ded with your switch.
8-1 8 Regulatory Notices FCC Statement This equipment ha s been t ested and fou nd to com ply with the limit s for a Class di git al device, p ursuant to Part 15 of the FCC Rules. These limit s are desig ned to provide reasonable protection agai nst harmful interference in a commeri cal environment.
8-2 VCCI Statement.
9-1 9 Glossary Table 9-1 Glossary Item Description 10BASE-T The IEEE specification for 10 Mbps Ethernet over Category 3, 4 or 5 twisted pair cable. 100BASE-TX The IEEE specification for 100 Mbps Fast Ethernet over Category 5 twisted-pair cable. 1000BASE-LX IEEE 802.
9-2 Item Description Category 6 Cables One of five grades of Twisted Pair (TP) cabling defin ed by the EIA/TIA-568-B standard. Category 6 can be used in Ethernet (10BASE-T), Fast Ethernet (100BASE-TX) and Gigabi t Ethernet (1000BASE-T) networks, and can transmit data at speeds of up to 1000 Mbps.
9-3 Item Description LAN Local Area Network. A network of end stations (such as PCs, print ers, servers) and network devices (hubs and swit ches) that cover a relatively small geographic are a (usually not larger than a floor or building ) . LANs are characterized by high transmiss ion speeds ove r short distances (u p to 1000 meters).
9-4 Item Description Traffic Monitoring Enables the monitoring of port traffic by attaching a network analyzer to one switch port, in orde r to monitor the traffic of other port s on the switch.
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 3Com 3CBLSF26H 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 3Com 3CBLSF26H - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso 3Com 3CBLSF26H imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul 3Com 3CBLSF26H ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il 3Com 3CBLSF26H, 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 3Com 3CBLSF26H.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il 3Com 3CBLSF26H. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo 3Com 3CBLSF26H 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.
