Manuale d’uso / di manutenzione del prodotto ENTERASYS ATX del fabbricante Enterasys Networks
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A TX User ’ s Guide.
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i Notice Enterasys reserves the right to make changes in specifications and other information contained in this document without prior notice. The reader should in all cases consult Enterasys to determine whether any such changes have been made. The hardwar e, firmware, or softwar e described in this manual is subject to change without notice.
ii AppleT alk, Apple, Macintosh, and T okenT alk are r egistered trademarks; and Apple Remote Access and EtherT alk ar e trademarks of Apple Computer , Inc. SmartBoost is a trademark of American Power Conversion ST is a register ed trademark and C++ is a trademark of A T&T Banyan and VINES are r egistered trademarks of Banyan Systems, Inc.
iii ANNEX, ANNEX-II, ANNEX-IIe, ANNEX-3, ANNEX-802.5, MICRO-ANNEX-XL, and MICRO- ANNEX-ELS are trademarks of Xylogics, Inc. MAXserver and Xyplex are trademarks of Xyplex, Inc. Restricted Rights Notice (Applicable to licenses to the United States Government only .
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v Contents Chapter 1 Intr oduction Using the A TX Switch User ’s Guide .......................................................................... 1-2 Related Manuals ...................................................................................
Contents vi V iewing I/F Summary Information .................................................................. 2-23 Interface Performance Statistics/Bar Graphs ........................................... 2-25 V iewing Interface Detail ...............
1-1 Chapter 1 Intr oduction How to use this guide; related guides; softw are conv entions; getting help; A TX Switch firmware version inf or mation W elcome to the NetSight Element Manager for the A TX User ’s Guide . W e have designed this guide to serve as a simple refer ence for using NetSight Element Manager for the A TX Switch.
Introduction 1-2 Using the A TX Switch User’ s Guide Using the A TX Switch User’ s Guide Each chapter in this guide describes one major functionality or a collection of several smaller functionalities of the A TX Switch.
Software Con v entions 1-3 Introduction NetSight Element Manager User ’ s Guide NetSight Element Manager T ools Guide Network T r oubleshooting Guide Microsoft Corporation’s Microsoft Windows User ’ s Guide For more information about the capabilities of the A TX Switch, consult the appropriate har dware documentation.
Introduction 1-4 Softw are Conv entions Figure 1-1. Sample W indow Showing Group Boxes Device Name Displays the user-defined name of the device. The device name can be changed via the System Group window; see the Generic SNMP User ’ s Guide for details.
Getting Help 1-5 Introduction The command buttons, for example , call up a menu listing the windows, screens, or commands available for that topic. Any menu topic followed by ... (three dots) — for example Statistics... — calls up a window or screen associated with that topic.
Introduction 1-6 Getting Help FTP: ftp.ct r on.com (134.141.197.25) Login anonymous Password your email address By BBS: (603) 335-3358 Modem Setting 8N1: 8 data bits, 1 stop bit, No parity Send your q.
2-1 Chapter 2 The A TX Switc h Chassis Vie w Inf or mation displa y ed in the Chassis View windo w; the Chassis Manager window; Hub management functions The A TX Switch Chassis V iew window is the mai.
The A TX Switch Chassis View 2-2 Viewing Chassis Inf ormation 2. Select Manage—>Node from the primar y window men u bar , or select the Manage Node toolbar button. or 1. In any map , list, or tree vie w , click the right mouse button once to select the A TX Switch you wish to manage .
Viewing Chassis Inf ormation 2-3 The A TX Switch Chassis View Fr ont P anel Inf ormation The areas below the main module display ar ea provides the following device information: IP The Internet Protoc.
The A TX Switch Chassis View 2-4 Viewing Chassis Inf ormation Boot Prom The revision of BOOT PROM installed in the A TX. Firmware The revision of device firmwar e stored in the A TX’s FLASH PROMs.
Viewing Chassis Inf ormation 2-5 The A TX Switch Chassis View The Device Men u From the Device Menu at the Chassis V iew window menu bar , you can access the following selections: • Device T ype... , which displays a window containing a description of the device being modeled.
The A TX Switch Chassis View 2-6 Viewing Chassis Inf ormation For more information on the port display options available via this menu, see Selecting a Port Status V iew , page 2-8 .
Viewing Chassis Inf ormation 2-7 The A TX Switch Chassis View The Module Menu There is one module menu selection: • Module T ype... , which brings up a window containing a description of a module inserted in the A TX Switch; see V iewing Hardware T ypes , page 2-10 .
The A TX Switch Chassis View 2-8 Viewing Chassis Inf ormation Selecting a P ort Status View T o change the status view of your ports: 1. Click on P or t Status on the menu bar at the top of the Chassis Vie w window; a menu will appear . 2. Drag down (and to the right, if necessar y) to select the status inf ormation you want to displa y .
Viewing Chassis Inf ormation 2-9 The A TX Switch Chassis View • ON if the port is currently forwar ding packets. • OFF if the port is not currently forwar ding packets. Load If you choose Load , the interface text boxes will display the percentage of network load processed by each port during the last polling interval.
The A TX Switch Chassis View 2-10 Viewing Chassis Inf ormation The Chassis Manager Window Like most networking devices, Enterasys and Cabletron A TX Switch management modules draw their functionality from a collection of pr oprietary MIBs and IETF RFCs.
Viewing Chassis Inf ormation 2-11 The A TX Switch Chassis View Choosing the Device T ype option on the Device menu brings up a window that tells you this is an A TX Switch. Figure 2-5. Device T ype W indow From the Module Menus in the Chassis V iew window , you can view a description of the module type.
The A TX Switch Chassis View 2-12 Managing the Hub Figure 2-7. Sample Interface Description T ext Boxes Managing the Hub In addition to the performance and configuration information described in the preceding sections, the Chassis V iew also provides you with the tools you need to configure your A TX Chassis and keep it operating pr operly .
Managing the Hub 2-13 The A TX Switch Chassis View Figure 2-8. IPX Routing window Configuring IPX Routing on a port 1. Click on the IPX selection box to enab le IPX routing on the por t. 2. Enter the (he xadecimal) Nov ell network number of the Nov ell network connected to this por t in the IPX Netw ork field.
The A TX Switch Chassis View 2-14 Managing the Hub 2(ethernet2) Ethernet2 frames are the same as 802.3 frames, except they use the third field (the length field in 802.3) to stor e a value repr esenting the type of transport packet that is encapsulated within the Ethernet packet.
Managing the Hub 2-15 The A TX Switch Chassis View Configuring the IP Address T able The IP Address Info section of this window displays the IP Addr esses and the subnet masks for each of the device’s interfaces that are configured for IP Routing.
The A TX Switch Chassis View 2-16 Managing the Hub • Bootp Rela y — when enabled specifies that this por t will rela y BOOTP pack ets. BootP requests and replies are encapsulated in UDP datag rams. • IP Multicast — when enabled specifies that the internet Multicast Routing Protocol is to be used ov er this por t.
Managing the Hub 2-17 The A TX Switch Chassis View T o set br oadcast protection: 1. In the Thresh Number field enter the maximum n umber of multicast pack ets that can be transmitted through the por t during each time inter v al. The def ault number of multicast pac kets that can be receiv ed in the specified time interval is 600,000 .
The A TX Switch Chassis View 2-18 Managing the Hub Figure 2-1 1. Bridge Configuration window Setting the Bridge Mode Depending on the modules installed in your A TX chassis the A TX ports can support up to three modes of bridging: T ransparent, Source Routing, and Sour ce Route T ranspar ent.
Managing the Hub 2-19 The A TX Switch Chassis View T ransmitting BPDUs Y ou can configur e whether or not this port will transmit BPDUs (Bridge Protocol Data Units). BPDUs are used in the Spanning T ree process. Bridges communicate Spanning T r ee Algorithm information via BPDUs.
The A TX Switch Chassis View 2-20 Managing the Hub the Spanning T r ee Protocol and has it enabled on this port. Manual — Enable The port will always accept and propagate STE packets, regar dless of its port state. Manual — Disable The port will not accept or send STE packets; any STE packets received will be discar ded.
Managing the Hub 2-21 The A TX Switch Chassis View Y ou can set the translation for the following pr otocols from this window: IPX Framing By selecting the option Enable IPX T ranslation you can specify whether , when bridging Novell IPX frames, they are to be translated to Ethernet-like frame format.
The A TX Switch Chassis View 2-22 Managing the Hub ARP Source Route This selection will specify what will occur when bridging ARP packets that are also source r outing explorer frames. The sour ce routing information can either be stripped or forwarded.
Managing the Hub 2-23 The A TX Switch Chassis View Using the Find Sour ce Address Feature Y ou can select the Find Sour ce Address option to discover which switching interface a specified source MAC addr ess is communicating through. When you select the Find Source Addr ess option, a search is made of the 802.
The A TX Switch Chassis View 2-24 Managing the Hub 2. Drag down to I/F Summary and release. The I/F Summary window , Figure 2-14 , will appear . Figure 2-14.
Managing the Hub 2-25 The A TX Switch Chassis View Interface P erformance Statistics/Bar Graphs The statistical values (and, where available, the accompanying bar graphs) to the right of the interface description fields provide a quick summary of interface performance.
The A TX Switch Chassis View 2-26 Managing the Hub Out Packets Packets transmitted, at the request of a higher level protocol, by the device interface to a subnetwork addr ess (both unicast and non-unicast).
Managing the Hub 2-27 The A TX Switch Chassis View Figure 2-15. Interface Detail W indow Three informational fields appear in the upper portion of the window: Description Displays the interface description for the currently selected interface: Ethernet.
The A TX Switch Chassis View 2-28 Managing the Hub Discarded Displays the number of packets which were discar ded even though they contained no errors that would pr event transmission.
Managing the Hub 2-29 The A TX Switch Chassis View T o calculate the per centage of inbound packets that were discar ded: Received Discards /Packets Received T o calculate the per centage of outbound .
The A TX Switch Chassis View 2-30 Managing the Hub.
3-1 Chapter 3 Using A TX T runking The T runking T able window; enab ling and disab ling trunking T runking, an extension of the 802.1D Spanning T ree protocol, allows you to increase aggr egate bandwidth when two or more switches ar e connected.
Using A TX T runking 3-2 The P or t T r unking Windo w Figure 3-1. The T runking T able W indow The P or t T runking Window The Port T runking window featur es the trunking table (in the upper portion.
The P or t T r unking Windo w 3-3 Using A TX T runking • helddown — trunking is enabled, but the trunk connection has been r ejected. Indicates that an error has been detected and the link is being held out of service until the error condition clears.
Using A TX T runking 3-4 The P or t T r unking Windo w • (9) self-connect — this port is connected to another port on the same device. This port cannot be used until the condition clears. • (10) port-moved — a differ ent port has been connected at the far end.
The P or t T r unking Windo w 3-5 Using A TX T runking 802.1D Spanning T r ee takes about 30 seconds to resolve which A TX ports in a trunk gr oup are to become forwar ding ports.
Using A TX T runking 3-6 The P or t T r unking Windo w.
4-1 Chapter 4 Using A TX P or t Filtering P or t filter tab le inf ormation; adding filters; viewing statistics The A TX lets you create custom filters to scr een data packets, and discard or forward traf fic based on the specified filter criteria.
Using A TX P or t Filter ing 4-2 • Port filters use the physical index number of a bridge port to determine whether traffic is to be scr eened at the port. These filters are useful for screening packets fr om being forwar ded onto a port’s attached segment.
P or t Filters T able Inf or mation 4-3 Using A TX P or t Filter ing P or t Filter s T ab le Inf ormation The scrolling window at the top displays the filters defined for each port and provides the following information about them: Id (Identifier) An identifier assigned to each filter entry in the Port Filters table.
Using A TX P or t Filter ing 4-4 Editing the P or t Filters T able Destination Indicates the starting address of a filter based on a range of destination MAC addresses. Offset Indicates the hexadecimal offset of a data field filter designed to scr een packets based on a portion of the data field.
Editing the P or t Filters T able 4-5 Using A TX P or t Filter ing Adding a Ne w Filter The A TX allows you to create up to 100 Port filters (total for all connected ports). T o add a new filter to the A TX or modify a pr eviously configured Port Filter: 1.
Using A TX P or t Filter ing 4-6 Editing the P or t Filters T able flow as an aid in determining your network design or usage policies bef ore actually reconfiguring the network. • NO (the def ault) indicates that you w ant to create an actual filter .
Editing the P or t Filters T able 4-7 Using A TX P or t Filter ing 2.) Click to de-activ ate (gr ay-out) the Not In Range chec k bo x if you w ant to filter on source address values within the specified r ange.
Using A TX P or t Filter ing 4-8 Editing the P or t Filters T able 7. Y ou can use a data field v alue as a filter criteria by using the Field Offset parameters . A data field value allo ws you to e xamine a pac ket (at a location specified by a data Field Offset) f or up to 64 b ytes of data that will act as the filtering cr iteria.
Editing the P or t Filters T able 4-9 Using A TX P or t Filter ing 4.) Select FRAME if you w ant the field offset v alue relative to the end of the Ether net frame type (regardless of whether or not the frame type is SNAP encapsulated). F or example , f or IP pack ets, a field offset of 0 indicates the star t of the IP header .
Using A TX P or t Filter ing 4-10 Viewing Filter Statistics b . Click in the Threshold: text bo x, and enter the number of pack ets matching this filter that must be detected within the giv en inter val f or the trap to be generated. 10. Once you ha v e finished specifying the parameters f or the filter , clic k on Add .
5-1 Chapter 5 W orkgr oup Configuration W orkgroups explained; adding and deleting w orkgroups from this window The virtual workgroups featur e of the A TX allows you to restrict multicast or broadcast traf fic from being pr opagated through every bridge port on your device.
W orkgroup Configuration 5-2 - If the A TX determines that the port does not belong to any workgroup configured for the received packet’s type, the packet will again be sent out through all other ports on the bridge that ar e in a Spanning T r ee Forwarding state.
5-3 W orkgroup Configuration If the workgroups ar e configured for an IPX network: 1. If the destination IPX network of the packet is zero, then all IPX workgroups for the r eceiving port are combined.
W orkgroup Configuration 5-4 Configuring a Workgroup Y ou can both view existing workgr oups and configure new workgr oups from this window . The W orkgroup T able at the top of the window lists each existing workgroup along with its configuration information.
Configuring a Workgroup 5-5 W orkgroup Configuration • IP Address — you must enter a network IP address f or the member por ts’ subnetwork. If the subnet identifier of the received pac ket’.
W orkgroup Configuration 5-6 Configuring a Workgroup.
6-1 Chapter 6 A TX P or t Mirr oring Using P or t MIrroring; configur ing por t mirror ing locally; configur ing por t mirror ing remotely The Port Mirroring utility allows you to captur e network t.
A TX P or t Mirror ing 6-2 The P or t Mirroring Window Oversized packets might be produced when mirr ored traf fic is sent from an 802.5 interface to an 802.
The P or t Mirroring Window 6-3 A TX P or t Mirror ing Figure 6-1. The A TX Port Mirroring W indow The Port Mirroring window featur es a port selection area (at the right side of the window), with selection buttons for each of the A TX’s managed ports.
A TX P or t Mirror ing 6-4 The P or t Mirroring Window If the port(s) being mirrored and the diagnostics port are both local 1. In the mirrored por ts selection area, click on the selection button(s) f or each por t that you wish to mirror . 2. In the Mirr or T ype field, clic k on the menu b utton to display the P or t T ype selection menu.
The P or t Mirroring Window 6-5 A TX P or t Mirror ing 5. Using the P or t Filtering window , establish any mirror filters that y ou wish to apply to the mirrored traffic. See Chapter 3, Using A TX P ort Filtering , for details on setting up your mirror filters .
A TX P or t Mirror ing 6-6 The P or t Mirroring Window.
7-1 Chapter 7 IPX Routing T ab les IPX Statistics defined The IPX Routing T ables window displays statistics containing information about IPX Routing on your A TX. The A TX’s ports can be configured to r oute IPX (Internetwork Packet Exchange) packets, see the IPX Routing section in Chapter 2 , for more information.
IPX Routing T ables 7-2 IPX Statistics Figure 7-1. IPX Routing T ables window IPX Statistics The window consists of three separate tables: IPX Interface, IPX Route, and IPX SAP . Each section contains a differ ent table of IPX routing information. IPX Interface This section displays the A TX’s IPX routing attributes on a per interface basis.
IPX Statistics 7-3 IPX Routing T ables Framing Displays the link-level framing to be used for this interface: • ethernet 802.3 — the default for ethernet links. This framing will use an 802.3 length followed by the IPX header and data. • ethernet 2 —the same framing as 802.
IPX Routing T ables 7-4 IPX Statistics Po r t # Displays the interface index of the port on your A TX through which the next hop of the route should be r eached. Hop Count Displays the secondary routing metric for this r oute, which is the number of routers that must be traversed to r each the destination.
IPX Statistics 7-5 IPX Routing T ables NodeID Displays the IPX node address of the server . When you ar e running Netware 2.x this corresponds with a physical MAC addr ess and is displayed in canonical bit order . If you ar e using Netware 3.x the node addr ess is typically 000000000001.
IPX Routing T ables 7-6 IPX Statistics.
Inde x-1 Index A Admin 2-8 Admin/Link 2-8 Age 7-4 all 5-4 ARP Source Route 2-22 ARP T ranslate 2-21 B Boolean operator 4-4, 4-6 Boot Prom, r evision 2-4 Bridge 2-8 Bridge Configuration 2-17 Bridge Nu.
Inde x Inde x-2 L Last Change 3-4 Last Error 3-3 Link Count 3-4 Link Ordinal Displays the position 3-4 link-level framing 7-3 Load 2-26 Local 6-4 Local Switching 2-17 Location 1-4 Logical Status 2-24 .
Inde x-3 Inde x T technical support 1-5 Thresh Number 2-17 Thresh T ime 2-17 T ick Count 7-4 to change the status view of your ports 2-8 T ranslation 2-20 T ranslation button 2-20 T ransmit BPDUs 2-19.
Inde x Inde x-4.
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 Enterasys Networks ENTERASYS ATX 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 Enterasys Networks ENTERASYS ATX - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Enterasys Networks ENTERASYS ATX imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Enterasys Networks ENTERASYS ATX ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Enterasys Networks ENTERASYS ATX, 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 Enterasys Networks ENTERASYS ATX.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Enterasys Networks ENTERASYS ATX. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Enterasys Networks ENTERASYS ATX 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.
