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Product Numbers: SA-Comp/1(=), SA-Comp/4(=)
This configuration note describes the installation and configuration of the data compression service adapters (referred to in this publication collectively as CSA). The specific Catalyst VIP2 model required by the CSA is the VIP2-40. The CSA is used in the Catalyst VIP2-40 module, which is attached to the Route Switch Module (RSM) and used in the Catalyst 5000 series switches. The CSA can also be used in the following:
Use this configuration note with the Route Switch Module Catalyst VIP2-15 and VIP2-40 Installation and Configuration Note (Document Number 78-4780-01), which shipped with your VIP2-15 and VIP2-40.
For complete descriptions of interface subcommands and the configuration options available for interfaces that support CSA functionality, refer to the appropriate Cisco IOS configuration publication listed in the "If You Need More Information" section.
This configuration note is organized into the following sections:
The Cisco IOS software that runs your router contains extensive features and functionality. The effective use of many of these features is easier if you have more information at hand. For additional information on configuring the Catalyst VIP2 port adapter interfaces, refer to the following documentation:
Data compression reduces the size of data frames to be transmitted over a network link, thus reducing the time required to transmit the frames across the network. Data compression works by providing a coding scheme at each end of a transmission link that allows characters to be removed from the frames of data at the sending side of the link and then replaced correctly at the receiving side. Because the condensed frames take up less bandwidth, more frames can be transmitted per unit of time.
Data compression schemes used in internetworking devices are referred to as lossless compression algorithms. These schemes reproduce the original bit streams exactly, with no degradation or loss, a feature required by routers and other devices to transport data across the network. The two most commonly used compression algorithms on internetworking devices are the Stacker compression and the Predictor data compression algorithms.
Based on the Lempel-Ziv compression algorithm, stacker compression was developed by STAC Electronics. The Stacker algorithm uses an encoded dictionary that replaces a continuous stream of characters with codes. The symbols represented by the codes are stored in memory in a dictionary-style list. Because the relationship between a code and the original symbol varies as the data varies, this approach is more responsive to variations in the data. This flexibility is particularly important for local-area network (LAN) data, because many different applications can be transmitting over the wide-area network (WAN) at any one time. In addition, as the data varies, the dictionary changes to accommodate and adapt to the varying needs of the traffic.
Developed by Novell, the Predictor compression algorithm tries to predict the next sequence of characters in a data stream by using an index to look up a sequence in the compression dictionary. It then examines the next sequence in the data stream to see if it matches. If it does, that sequence replaces the looked-up sequence in the dictionary. If there is no match, the algorithm locates the next character sequence in the index and begins the process again. The index updates itself by hashing a few of the most recent character sequences from the input stream.
Cisco internetworking devices use the Stacker and Predictor data compression algorithms, but the CSA supports only the Stacker algorithm.
The CSA requires that the host RSM runs Cisco IOS Release 11.2(9)P or later and that the supervisor engine runs Catalyst 5000 series supervisor engine software release 2.3(1) or later.
The specific Catalyst VIP2 model required for the CSA is VIP2-40, which has 2 MB of SRAM and 32 MB of DRAM.
Follow the safety guidelines in this section when working with any equipment that connects to electrical power or telephone wiring.
Warning This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. To see translations of the warnings that appear in this publication, refer to the Regulatory Compliance and Safety Information document that accompanied this device.
Waarschuwing Dit waarschuwingssymbool betekent gevaar. U verkeert in een situatie die lichamelijk letsel kan veroorzaken. Voordat u aan enige apparatuur gaat werken, dient u zich bewust te zijn van de bij elektrische schakelingen betrokken risico's en dient u op de hoogte te zijn van standaard maatregelen om ongelukken te voorkomen. Voor vertalingen van de waarschuwingen die in deze publicatie verschijnen, kunt u het document Regulatory Compliance and Safety Information (Informatie over naleving van veiligheids- en andere voorschriften) raadplegen dat bij dit toestel is ingesloten.
Varoitus Tämä varoitusmerkki merkitsee vaaraa. Olet tilanteessa, joka voi johtaa ruumiinvammaan. Ennen kuin työskentelet minkään laitteiston parissa, ota selvää sähkökytkentöihin liittyvistä vaaroista ja tavanomaisista onnettomuuksien ehkäisykeinoista. Tässä julkaisussa esiintyvien varoitusten käännökset löydät laitteen mukana olevasta Regulatory Compliance and Safety Information -kirjasesta (määräysten noudattaminen ja tietoa turvallisuudesta).
Attention Ce symbole d'avertissement indique un danger. Vous vous trouvez dans une situation pouvant causer des blessures ou des dommages corporels. Avant de travailler sur un équipement, soyez conscient des dangers posés par les circuits électriques et familiarisez-vous avec les procédures couramment utilisées pour éviter les accidents. Pour prendre connaissance des traductions d'avertissements figurant dans cette publication, consultez le document Regulatory Compliance and Safety Information (Conformité aux règlements et consignes de sécurité) qui accompagne cet appareil.
Warnung Dieses Warnsymbol bedeutet Gefahr. Sie befinden sich in einer Situation, die zu einer Körperverletzung führen könnte. Bevor Sie mit der Arbeit an irgendeinem Gerät beginnen, seien Sie sich der mit elektrischen Stromkreisen verbundenen Gefahren und der Standardpraktiken zur Vermeidung von Unfällen bewußt. Übersetzungen der in dieser Veröffentlichung enthaltenen Warnhinweise finden Sie im Dokument Regulatory Compliance and Safety Information (Informationen zu behördlichen Vorschriften und Sicherheit), das zusammen mit diesem Gerät geliefert wurde.
Avvertenza Questo simbolo di avvertenza indica un pericolo. La situazione potrebbe causare infortuni alle persone. Prima di lavorare su qualsiasi apparecchiatura, occorre conoscere i pericoli relativi ai circuiti elettrici ed essere al corrente delle pratiche standard per la prevenzione di incidenti. La traduzione delle avvertenze riportate in questa pubblicazione si trova nel documento Regulatory Compliance and Safety Information (Conformità alle norme e informazioni sulla sicurezza) che accompagna questo dispositivo.
Advarsel Dette varselsymbolet betyr fare. Du befinner deg i en situasjon som kan føre til personskade. Før du utfører arbeid på utstyr, må du vare oppmerksom på de faremomentene som elektriske kretser innebærer, samt gjøre deg kjent med vanlig praksis når det gjelder å unngå ulykker. Hvis du vil se oversettelser av de advarslene som finnes i denne publikasjonen, kan du se i dokumentet Regulatory Compliance and Safety Information (Overholdelse av forskrifter og sikkerhetsinformasjon) som ble levert med denne enheten.
Aviso Este símbolo de aviso indica perigo. Encontra-se numa situação que lhe poderá causar danos físicos. Antes de começar a trabalhar com qualquer equipamento, familiarize-se com os perigos relacionados com circuitos eléctricos, e com quaisquer práticas comuns que possam prevenir possíveis acidentes. Para ver as traduções dos avisos que constam desta publicação, consulte o documento Regulatory Compliance and Safety Information (Informação de Segurança e Disposições Reguladoras) que acompanha este dispositivo.
¡Advertencia! Este símbolo de aviso significa peligro. Existe riesgo para su integridad física. Antes de manipular cualquier equipo, considerar los riesgos que entraña la corriente eléctrica y familiarizarse con los procedimientos estándar de prevención de accidentes. Para ver una traducción de las advertencias que aparecen en esta publicación, consultar el documento titulado Regulatory Compliance and Safety Information (Información sobre seguridad y conformidad con las disposiciones reglamentarias) que se acompaña con este dispositivo.
Varning! Denna varningssymbol signalerar fara. Du befinner dig i en situation som kan leda till personskada. Innan du utför arbete på någon utrustning måste du vara medveten om farorna med elkretsar och känna till vanligt förfarande för att förebygga skador. Se förklaringar av de varningar som förkommer i denna publikation i dokumentet Regulatory Compliance and Safety Information (Efterrättelse av föreskrifter och säkerhetsinformation), vilket medföljer denna anordning.
Follow these basic guidelines when working with any electrical equipment:
ESD damage, which can occur when electronic cards or components are improperly handled, results in complete or intermittent failures. A processor module comprises a printed circuit board that is fixed in a metal carrier. Electromagnetic interference (EMI) shielding, connectors, and a handle are integral components of the carrier. Although the metal carrier helps to protect the board from ESD, use a preventive antistatic strap whenever handling a processor module.
Follow these guidelines for preventing ESD damage:
 | Caution For safety, periodically check the resistance value of the antistatic strap. The measurement should be between 1 and 10 megohms. |
The CSA provides high-performance, hardware-based, data compression capabilities. The two CSA models are as follows:
The CSA faceplate has no media interfaces. The CSA offloads all compression- and decompression-related packet handling from host processors by compressing and decompressing packets passing through interfaces on serial port adapters installed in the Catalyst VIP2.
The CSA supports simultaneous Stacker data compression algorithms, with independent full-duplex compression and decompression capabilities. The CSA supports only PPP and Frame Relay encapsulation.
The CSA can be installed in port adapter slot 0 or slot 1 on the Catalyst VIP2-40 motherboard; however, the CSA will compress and decompress only data passing through interfaces on the serial port adapter in the adjacent Catalyst VIP2 port adapter slot. Figure 3 shows a Catalyst VIP2 with a port adapter in slot 0 and a CSA in slot 1.
The CSA has an enabled LED, standard on all service adapters, plus the active and error LEDs. After system initialization, the enabled LED goes on to indicate that the CSA has been enabled for operation. (The LEDs are shown in Figure 4.) The following conditions must be met before the enabled LED goes on:
If either of these conditions is not met, or if the router initialization fails for other reasons, the enabled LED does not go on.
In addition to the enabled LED, the CSA has the following two LEDs and indications:
This section describes how to install a CSA.
The steps required to install or replace a service adapter or port adapter on a Catalyst VIP2 are the same. Therefore, the term adapter in this section applies to service adapters as well as port adapters, unless noted otherwise.
Each adapter circuit board is mounted to a metal carrier and is sensitive to ESD damage. The following procedures should be performed by a Cisco-certified service provider only. If a blank adapter is installed on the Catalyst VIP2 in which you want to install a new adapter, you must first remove the RSM/VIP2 combination from the chassis, and then remove the blank adapter.
| Caution To prevent system problems, do not remove adapters from the Catalyst VIP2 or attempt to install other adapters on the Catalyst VIP2 while the system is operating. To install or replace adapters, first remove the RSM/VIP2 combination from the switch. |
When only one adapter is installed on a Catalyst VIP2, a blank adapter must fill the empty slot to allow the Catalyst VIP2 and RSM chassis to conform to EMI emissions requirements, and to allow proper airflow through the chassis.
Follow this procedure to remove and replace any type of adapter on the Catalyst VIP2:
Step 1 Attach an ESD-preventive wrist strap between you and an unfinished chassis surface or to the ESD connector on the switch.
Step 2 For a new adapter installation or an adapter replacement, first disconnect any interface cables from the front of the adapter.
Step 3 To remove the RSM/VIP2 combination from the chassis, follow the steps in the "RSM and Catalyst VIP2 Installation" section in the Route Switch Module Catalyst VIP2-15 and VIP2-40 Installation and Configuration Note (Document Number 78-4780-01), which shipped with your Catalyst VIP2.
Step 4 Place the removed RSM/VIP2 combination on an antistatic mat.
Step 5 Locate the screw at the rear of the adapter (or blank adapter) to be replaced. (See Figure 5.) This screw secures the adapter (or blank adapter) to its slot.
Step 6 Remove the screw that secures the adapter (or blank adapter).
Step 7 With the screw removed, grasp the handle on the front of the adapter (or blank adapter) and carefully pull it out of its slot, away from the edge connector at the rear of the slot. (See Figure 6.)
Step 8 If you removed an adapter, place it in an antistatic container for safe storage or shipment back to the factory. If you removed a blank adapter, no special handling is required; store the blank adapter for potential future use.
Step 9 Remove the new adapter from its antistatic container and position it at the opening of the slot so that the leading edges of the carrier are between the upper and lower slot edges. (See Figure 7.)
| Caution To prevent jamming the carrier between the upper and lower edges of the adapter slot, and to ensure that the edge connector at the rear of the adapter seats in the connector at the rear of the adapter slot, make certain that the leading edges of the carrier are between the upper and lower slot edges, as shown in Figure 7. |
Step 10 Carefully slide the new adapter into the adapter slot until the connector at the rear of the adapter seats in the connector at the rear of the adapter slot.
Step 11 Install the screw in the rear of the adapter slot. (See Figure 5 for its location.) Do not overtighten this screw.
Step 12 To replace the RSM/VIP2 combination in the chassis, follow the steps in the "RSM and Catalyst VIP2 Installation" section in the Route Switch Module Catalyst VIP2-15 and VIP2-40 Installation and Configuration Note (Document Number 78-4780-01), which shipped with your Catalyst VIP2.
Step 13 Reconnect the interface cables to the adapter ports.
This completes the procedure for installing a new port adapter or replacing a port adapter in a Catalyst VIP2.
You can modify the configuration of your router through the EXEC software command interpreter. You must enter the privileged level of the EXEC command interpreter with the enable command before you can use the configure command to configure a new interface or to change the existing configuration of an interface. The system prompts you for a password if one has been set.
The system prompt for the privileged level ends with a pound sign (#) instead of an angle bracket (>). At the console terminal, use the following procedure to enter the privileged level:
Step 1 At the user-level EXEC prompt, enter the enable command. The EXEC prompts you for a privileged-level password, as follows:
Router> enable
Password:
Step 2 Enter the password (the password is case-sensitive). For security purposes, the password is not displayed.
Step 3 When you enter the correct password, the system displays the privileged-level system prompt (#):
Router#
Proceed to the following section to configure the new interfaces.
If you installed a new CSA-equipped Catalyst VIP2 or if you want to change the configuration of an existing interface, you must enter Configuration mode using the configure command. If you replaced a CSA that was previously configured, the system recognizes the new CSA and brings up each interface previously configured for compression.
After you verify that the new CSA is installed correctly (the enabled LED goes on), use the privileged-level configure command to configure compression on the new interfaces.
The following sections describe the commands for configuring compression on individual interfaces. Configuration commands are executed from the privileged level of the EXEC command interpreter, which usually requires password access. Contact your system administrator, if necessary, to obtain access. (Refer to the earlier "Using the EXEC Command Interpreter" section for an explanation of the privileged level of the EXEC.)
In the RSM, physical port addresses specify the actual physical location of each interface port on the Catalyst VIP2. This physical location is identified by interface type/port adapter slot/interface port number.
On the Catalyst VIP2, the first port adapter slot number is always 0; the second port adapter slot number is always 1. The individual interface port numbers always begin with 0. The number of additional ports depends on the number of ports on a port adapter.
For example, if you had an E1-G.703/G.704 port adapter in port adapter slot 0, the port addressing would be 0/0, 0/1, 0/2, and 0/3, from left to right. The E1-G.703/G.704 interface addresses of the E1-G.703/G.704 port adapter in port adapter slot 1 would be 1/0, 1/1, 1/2, and 1/3, from left to right.
Port and service adapters can occupy either port adapter slot; there are no restrictions.
You can identify interface ports by physically checking the port adapter interface port location on the Catalyst VIP2 or by using the show interface command to display information about a specific interface or all interfaces in the router.
Before you remove an interface that you will not replace, replace an interface cable, or replace port adapters, use the shutdown command to shut down (disable) the interfaces to prevent anomalies when you reinstall the new or reconfigured Catalyst VIP2. When you shut down an interface, it is designated administratively down in the show command displays.
Follow these steps to shut down an interface:
Step 1 Enter the privileged level of the EXEC command interpreter. (Refer to the "Using the EXEC Command Interpreter" section for instructions.)
Step 2 At the privileged-level prompt, enter Configuration mode and specify that the console terminal will be the source of the configuration subcommands:
Router# configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#
Step 3 Specify the port adapter slot and port of the first interface you want to shut down by entering the subcommand interface, followed by the type (serial) and port adapter slot/interface port number. The following example is for a port adapter in slot 1:
Router(config)# interface serial 1/0
Step 4 Enter the shutdown command, as follows:
Router(config-if)# shutdown
Step 5 To shut down any additional interfaces, enter the port adapter slot and port for each additional interface followed by the shutdown command. When you have finished shutting down interfaces, press CNTL/Z (hold down the Control key while you press Z) or enter end to exit Configuration mode and return to the EXEC command interpreter prompt, as follows:
Router(config-if)# int serial 1/1 Router(config-if)# shutdown Router(config-if)# int serial 1/2 Router(config-if)# shutdown CNTL/Z Router#
Step 6 Write the new configuration to memory, as follows:
Router# copy running-config startup-config [OK] Router#
The system displays an OK message when the configuration has been stored.
Step 7 To verify that new interfaces are now in the correct state (shutdown), use the show interface serial port adapter slot/interface port number command to display the specific interface, or use the show interfaces command, without variables, to display the status of all interfaces in the system.
Router# show int serial 1/0 Serial1/0 is administratively down, line protocol is down Hardware is M8T-V.35 [display text omitted]
Step 8 To reenable the interfaces, repeat the previous steps, but use the no shutdown command in Step 4; then write the new configuration to memory, as follows:
Router(config)# int serial 1/0 Router(config-if)# no shutdown CNTL/Z Router# Router# copy running-config startup-config [OK] Router# show int serial 1/0 Serial1/0 is up, line protocol is up Hardware is M8T-V.35 [display text omitted]
For complete descriptions of software configuration commands, refer to the publications listed in the "If You Need More Information" section on page 2.
A CSA installed in slot 0 or slot 1 of a Catalyst VIP2 only compresses interfaces on the serial port adapter installed in the adjacent Catalyst VIP2 slot. There are three methods for configuring PPP and Frame Relay compression:
Use the compress stac [software|distributed] command to configure PPP compression on interfaces. The compress stac command without variables enables hardware PPP compression on a specified interface. If a CSA is not installed in the Catalyst VIP2, distributed compression is enabled on the interface. If a Catalyst VIP2 is not attached to the RSM, software PPP compression is enabled on the interface.
If your RSM/VIP2 has a CSA installed, you can force distributed PPP compression on an interface using the compress stac distributed command. You can also force software PPP compression on an interface using the compress stac software command.
Use the frame-relay map protocol protocol-address dlci [ietf|cisco] payload-compress frf9 stac [software|distributed] command to configure frame relay compression on an interface. Use the frame-relay payload-compress frf9 stac [software|distributed] command to configure frame relay compression on a subinterface.
The frame-relay map protocol protocol-address dlci [ietf|cisco] payload-compress frf9 stac or the frame-relay payload-compress frf9 stac command without variables enables hardware compression on a specified interface. If a CSA is not installed in the RSM/VIP2, distributed compression is enabled on the interface. If a Catalyst VIP2 is not attached to the RSM, software compression is enabled on the interface.
If your RSM/VIP2 has a CSA installed, you can force distributed frame relay compression on an interface using the frame-relay map protocol protocol-address dlci [ietf|cisco] payload-compress frf9 stac distributed command or on a subinterface using the frame-relay payload-compress frf9 stac csa distributed command. You can also force software frame relay compression on an interface using the frame-relay map protocol protocol-address dlci [ietf|cisco] payload-compress frf9 stac software command or on a subinterface using the frame-relay payload-compress frf9 stac software command.
Use the following instructions to configure PPP compression on a serial interface with the compress stac [distributed|software] command. Press the Return key after each step unless otherwise noted. At any time you can exit the privileged level and return to the user level by entering disable at the prompt, as follows:
Router# disable
Router>
Step 1 At the privileged-level prompt, enter Configuration mode and specify that the console terminal is the source of the configuration subcommands, as follows:
Router# configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#
Step 2 At the prompt, specify the first interface you want to configure for compression by entering the subcommand interface, followed by the type (serial) and port adapter slot/interface port number. The following example is for the first serial interface in port adapter slot 1:
Router(config)# interface serial 1/0
Step 3 Specify PPP encapsulation for the interface, as follows:
router(config-if)# encapsulation PPP
Step 4 Enter the compress stac [ditributed|software] command, as follows:
router(config-if)# compress stac
Step 5 To configure compression on any additional interfaces, enter the port adapter slot and interface port number of each additional interface followed by the compress stac [ditributed|software] command. When you have finished configuring compression on interfaces, press CNTL/Z (hold down the Control key while you press Z) or enter end to exit Configuration mode and return to the EXEC command interpreter prompt, as follows:
Router(config-if)# int serial 1/1 Router(config-if)# compress stac Router(config-if)# int serial 1/2 Router(config-if)# compress stac CNTL/Z Router#
Step 6 Write the new configuration to memory, as follows:
Router# copy running-config startup-config [OK] Router#
The system displays an OK message when the configuration has been stored.
Step 7 To verify that compression is configured on the interfaces, use the show compress command to display the status of all interfaces in the system. Refer to the "Checking the Configuration" section for examples of the show compress command.
Step 8 To remove compression from the interfaces, repeat the previous steps, but use the no compress command in Step 4; then write the new configuration to memory, as follows:
Router(config)# int serial 1/0 Router(config-if)# no compress CNTL/Z Router# Router# copy running-config startup-config [OK]
After removing compression from an interface, the interface does not appear in the output from the show compress command.
This completes the procedure for configuring PPP compression on a serial interface. To check the configuration of the interfaces, proceed to the "Checking the Configuration" section.
Use the following instructions to configure frame relay compression on interfaces with the frame-relay map protocol protocol-address dlci [ietf|cisco] payload-compress frf9 stac [software|distributed] command and on subinterfaces using the frame-relay payload-compress frf9 stac [software|distributed] command. Before beginning the configuration, be prepared with the following information:
Press the Return key after each step unless otherwise noted. At any time you can exit the privileged level and return to the user level by entering disable at the prompt as follows:
Router# disable
Router>
Step 1 At the privileged-level prompt, enter Configuration mode and specify that the console terminal is the source of the configuration subcommands, as follows:
Router# configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#
Step 2 At the prompt, specify the first interface or subinterface you want to configure for compression. If you are configuring an interface, enter the subcommand interface, followed by the type (serial) and port adapter slot/interface port number. The following example is for the first interface in port adapter slot 1:
Router(config)# interface serial 1/0
If you are configuring a subinterface, enter the subcommand interface, followed by the type (serial) and port adapter slot/interface port number.subinterface number point-to-point. The following example is for subinterface 100 of the first interface in port adapter slot 1:
Router(config)# interface serial 1/0.100 point-to-point
Step 3 Specify frame relay encapsulation for the interface or subinterface, as follows:
router(config-if)# encapsulation frame-relay
Step 4 To configure compression on the interface or subinterface, enter the frame-relay map protocol protocol-address dlci [ietf|cisco] payload-compress frf9 stac [software|distributed] command, as follows:
router(config-if)# frame-relay map ip 1.1.1.1 105 ietf payload-compress frf9 stac
To configure compression on the subinterface, enter the frame-relay payload-compress frf9 stac [software|distributed] command, as follows:
router(config-if)# frame-relay payload-compress frf9 stac
Step 5 Repeat Step 2 through Step 4 to configure compression on additional interfaces or subinterfaces. When you have finished, press CNTL/Z (hold down the Control key while you press Z) or enter end to exit Configuration mode and return to the EXEC command interpreter prompt.
Step 6 Write the new configuration to memory, as follows:
Router# copy running-config startup-config [OK] Router#
The system displays an OK message when the configuration has been stored.
Step 7 To verify that compression is configured on the interfaces, use the show compress command (displays the status of all interfaces in the system). Refer to the "Checking the Configuration" section for examples of the show compress command.
Step 8 To remove compression from the interfaces, repeat the previous steps, but use the no frame-relay map protocol protocol-address dlci [ietf|cisco] payload-compress frf9 stac [software|distributed] command or the no frame-relay payload-compress frf9 stac [software|distributed] command in Step 4; then write the new configuration to memory, as follows:
Router(config)# int serial 1/0.100 point-to-point Router(config-if)# no frame-relay map payload-compress frf9 stac CNTL/Z Router# Router# copy running-config startup-config [OK]
After removing compression from an interface, the interface does not appear in the output from the show compress command.
This completes the procedure for configuring Frame Relay compression on a serial interface or subinterface. To check the configuration of the interfaces, proceed to the "Checking the Configuration" section. For additional Frame Relay configuration information, refer to the chapter "Configuring Frame Relay" of Wide-Area Networking Configuration Guide.
After configuring the interfaces for compression, use the show commands to display the status of the interfaces and the ping and loopback commands to check connectivity.
The following steps use show commands to verify that the Catalyst VIP2 interfaces are configured and operating correctly.
Step 1 Use the show version command to display the system hardware configuration. Ensure that the list includes the CSA.
Step 2 Display all the interfaces configured for compression, the compression type (hardware, distributed, or software), and the CSA in use with the show compress command. Verify that the compression type is configured on the appropriate interface.
Step 3 Display the type of port adapters installed on the Catalyst VIP2 in your system with the show diag command.
Step 4 Specify one of the new interfaces with the show interfaces interface type/port adapter slot/interface port number command and verify that the interface and line protocol are in the correct state: up or down.
Step 5 Display the protocols configured for the entire system and specific interfaces with the show protocols command. If necessary, return to configuration mode to add or remove protocol routing on the system or specific interfaces.
Step 6 Display the running configuration file with the show running-config command. Display the configuration stored in NVRAM using the show startup-config command. Verify that the configuration is accurate for the system and each interface.
If the displays indicate that the hardware is not functioning properly, ensure that the network interface is properly connected and terminated. If you still have problems, contact a customer service representative for assistance.
Router# show version Cisco Internetwork Operating System Software IOS (tm) C5RSM Software (C5RSM-JSV-M), Version 11.2(9)P Copyright (c) 1986-1997 by cisco Systems, Inc. Compiled Tue 24-Jun-97 17:09 by shj Image text-base: 0x600108E0, data-base: 0x6095E000 ROM: System Bootstrap, Version 11.2(15707) BOOTFLASH: C5RSM Software (C5RSM-JSV-M), Version 11.2 yosemite_3 uptime is 17 hours, 17 minutes System restarted by reload System image file is "dirt/yosemite/c5rsm-jsv-mz.7P", booted via tftp from 223.2 55.254.254 cisco RSP2 (R4700) processor with 32768K bytes of memory. R4700 processor, Implementation 33, Revision 1.0 Last reset from power-on G.703/E1 software, Version 1.0. SuperLAT software copyright 1990 by Meridian Technology Corp). Bridging software. X.25 software, Version 2.0, NET2, BFE and GOSIP compliant. TN3270 Emulation software. 1 EIP controller (6 Ethernet). 1 VIP2 controller (8 Serial)(1 Compression). 6 Ethernet/IEEE 802.3 interfaces. 1 HSSI network interface. 1 Compression port adapter. 123K bytes of non-volatile configuration memory. 16384K bytes of Flash PCMCIA card at slot 0 (Sector size 128K). 8192K bytes of Flash internal SIMM (Sector size 256K). Configuration register is 0x100 Router#
To determine which interfaces in the Catalyst VIP2 are configured for compression, use the show compress command. All interfaces configured for compression are displayed, as well as the type of compression configured on each interface and which CSA is in use (the show compress command only displays interfaces that are configured for compression). The following examples show the same interface (the first interface of the port adapter in slot 1) configured for PPP compression and then frame relay compression:
Router# sh compress
Serial1/0
Distributed h/w compression enabled
CSA in slot 3 in use
Compressed bytes sent: 4932 bytes 0 Kbits/sec ratio: 10.500
Compressed bytes recv: 5019 bytes 0 Kbits/sec ratio: 10.019
restarts: 10
last clearing of counters: 165828 seconds
Router# sh compress
Serial1/0 - DLCI: 105
Distributed h/w compression enabled
CSA in slot 3 in use
Compressed bytes sent: 4942 bytes 0 Kbits/sec ratio: 10.700
Compressed bytes recv: 5029 bytes 0 Kbits/sec ratio: 10.009
restarts: 10
last clearing of counters: 162528 seconds
To determine the type of port adapters installed on a Catalyst VIP2, use the show diag command. Specific port adapter information is displayed as shown in the following example:
Router# show diag
Slot 0:
Physical slot 0, ~physical slot 0xF, logical slot 0, CBus 1
Microcode Status 0x4
Master Enable, LED, WCS Loaded
Board is analyzed
Pending I/O Status: Console I/O, Debug I/O
EEPROM format version 1
C5IP controler, HW rev 1.0, board revision A0
Serial number: 00000001 Part number: 00-0000-01
Test history: 0x00 RMA number: 00-00-00
Flags: cisco 7000 board; 7500 compatible
EEPROM contents (hex):
0x20: 01 1C 01 00 00 00 00 01 00 00 00 01 00 00 00 00
0x30: 50 00 00 00 00 00 00 00 00 00 00 78 00 00 00 00
Slot database information:
Flags: 0x4 Insertion time: 0xFAC (17:24:40 ago)
Slot 7:
EEPROM format version 1
Route/Switch Processor 2, HW rev 1.0, board revision A0
Serial number: 00000001 Part number: 00-0000-01
Test history: 0x00 RMA number: 00-00-00
Flags: cisco 7000 board; 7500 compatible
EEPROM contents (hex):
0x20: 01 1C 01 00 00 00 00 01 00 00 00 01 00 00 00 00
0x30: 50 00 00 00 00 00 00 00 00 00 00 78 00 00 00 00
.
.
.
PA Bay 0 Information:
Compression PA, 3M SRAM, 0 ports
EEPROM format version 255
HW rev FF.FF, Board revision UNKNOWN
Serial number: 4294967295 Part number: 255-65535-255
PA Bay 1 Information:
Mueslix Serial PA, 8 ports
EEPROM format version 1
HW rev FF.FF, Board revision UNKNOWN
Serial number: 4294967295 Part number: 255-65535-255
If the displays indicate that the hardware is not functioning properly, ensure that the network interfaces are properly connected and terminated. If you still have problems bringing up or shutting down an interface, contact a customer service representative for assistance.
Router# sh int serial 1/0 Serial1/0 is up, line protocol is up Hardware is cxBus Serial Internet address is 1.1.1.0 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255 Encapsulation PPP, loopback not set, keepalive not set (display text omitted] Router# sh int serial 1/0 Serial1/0 is up, line protocol is up Hardware is cxBus Serial Internet address is 1.1.1.0 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255 Encapsulation FRAME-RELAY, loopback not set, keepalive not set (display text omitted]
The following example of the show interfaces serial port adapter slot/interface port number command shows all of the information specific to the first 8T-V.35 interface port (interface port 0) in port adapter slot 1:
Router# sh int serial 1/0
Serial1/0 is up, line protocol is up
Hardware is cxBus Serial
Internet address is 1.1.1.0
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255
Encapsulation PPP, loopback not set, keepalive not set
Last input 2d18h, output 00:00:54, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0 (size/max/drops); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 0/64/0 (size/threshold/drops)
Conversations 0/1 (active/max active)
Reserved Conversations 0/0 (allocated/max allocated)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
16 packets input, 1620 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants
0 input errors, 0 CRC, 0 frame, 0 overrun, 1 ignored, 0 abort
3995 packets output, 1147800 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
1 carrier transitions
RTS up, CTS up, DTR up, DCD up, DSR up
For complete Catalyst VIP2 command descriptions and examples, refer to the publications listed in the "If You Need More Information" section on page 2.
The ping and loopback commands allow you to verify that an interface port is functioning properly and to check the path between a specific port and connected devices at various locations on the network after the system has booted successfully and is operational. You can also use the show compress command to view the interfaces in the Catalyst VIP2 that are configured for compression. Refer to the publications listed in the "If You Need More Information" section for detailed command descriptions and examples.
The ping command sends echo request packets to a remote device at an IP address that you specify. After sending an echo request, the command waits a specified time for the remote device to reply. Each echo reply is displayed as an exclamation point (!) on the console terminal; each request that is not returned before the specified timeout is displayed as a period (.). A series of exclamation points (!!!!!) indicates a good connection; a series of periods (.....) or the messages (timed out) or (failed) indicate that the connection failed.
An example of a successful ping command to a remote server with the address 1.1.1.10 follows:
Router# ping 1.1.1.10 <Return> Type escape sequence to abort. Sending 5, 100-byte ICMP Echoes to 1.1.1.10, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/15/64 ms Router#
If the connection fails, verify that you have the correct IP address for the destination and that the device is active (powered on), and repeat the ping command.
The loopback test allows you to detect and isolate equipment malfunctions by testing the connection between a port adapter interface and a remote device such as a modem or a CSU/DSU. The loopback subcommand places an interface in loopback mode, which enables test packets that are generated from the ping command to loop through a remote device or interface cable. If the packets complete the loop, the connection is good. If not, you can isolate a fault to the remote device or interface cable in the path of the loopback test.
The equipment described in this note generates and may radiate radio frequency energy. If it is not installed in accordance with Cisco's installation instructions, it may cause interference with radio and television reception. This equipment has been tested and found to comply with the limits for a Class A digital device in accordance with the specifications in part 15 of the FCC rules. These specifications are designed to provide reasonable protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation.
You can determine whether your equipment is causing interference by turning it off. If the interference stops, it was probably caused by the Cisco equipment or one of its peripheral devices. If the equipment causes interference to radio or television reception, try to correct the interference by using one or more of the following measures:
Modifications to this product not authorized by Cisco Systems could void the FCC approval and negate your authority to operate the product.
Cisco Connection Online (CCO) is Cisco Systems' primary, real-time support channel. Maintenance customers and partners can self-register on CCO to obtain additional information and services.
Available 24 hours a day, 7 days a week, CCO provides a wealth of standard and value-added services to Cisco's customers and business partners. CCO services include product information, product documentation, software updates, release notes, technical tips, the Bug Navigator, configuration notes, brochures, descriptions of service offerings, and download access to public and authorized files.
CCO serves a wide variety of users through two interfaces that are updated and enhanced simultaneously: a character-based version and a multimedia version that resides on the World Wide Web (WWW). The character-based CCO supports Zmodem, Kermit, Xmodem, FTP, and Internet e-mail, and it is excellent for quick access to information over lower bandwidths. The WWW version of CCO provides richly formatted documents with photographs, figures, graphics, and video, as well as hyperlinks to related information.
You can access CCO in the following ways:
For a copy of CCO's Frequently Asked Questions (FAQ), contact cco-help@cisco.com. For additional information, contact cco-team@cisco.com.
Posted: Mon Jul 26 09:43:02 PDT 1999
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