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Product Number: AIM-COMPR4
This document describes the 4E1 data compression advanced interface module (AIM). The 4E1 data compression AIM provides hardware-based compression services for Cisco 3660 routers. The module provides for the compression and decompression of packet data transmitted and received on serial network interfaces. The 4E1 data compression AIM supports the industry standard Lempel-Ziv standard (LZS) and Microsoft/Point-to-Point Compression (MPPC) compression algorithms.
Use this document in conjunction with your router installation and configuration guide, the Regulatory Compliance and Safety Information document for your router, and the Cisco IOS configuration guides and command references. If you have questions or need help, see the "Obtaining Service and Support" section.
This document contains the following sections:
 | Caution Before performing procedures described in this document, review the "Safety Recommendations" section. |
The 4E1 data compression AIM requires Cisco IOS Release 12.0(5)T or later.
Follow these guidelines to ensure general safety:
Safety warnings appear throughout this publication in procedures that, if performed incorrectly, may harm you. A warning symbol precedes each warning statement.
Warning 
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.
| Warning Read the installation instructions before you connect the system to its power source. |
| Warning Only trained and qualified personnel should be allowed to install or replace this equipment. |
| Warning Before working on a chassis or working near power supplies, unplug the power cord on AC units; disconnect the power at the circuit breaker on DC units. |
| Warning Ultimate disposal of this product should be handled according to all national laws and regulations. |
| Warning
Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals. |
| Warning To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Both LAN and WAN ports may use RJ-45 connectors. Use caution when connecting cables. |
| Warning
Hazardous network voltages are present in WAN ports regardless of whether power to the router is OFF or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables, detach the end away from the router first. |
| Warning
The ISDN connection is regarded as a source of voltage that should be inaccessible to user contact. Do not attempt to tamper with or open any public telephone operator (PTO)-provided equipment or connection hardware. Any hardwired connection (other than by a nonremovable, connect-one-time-only plug) must be made only by PTO staff or suitably trained engineers. |
| Warning
Before opening the chassis, disconnect the telephone-network cables to avoid contact with telephone-network voltages. |
| Warning
Do not work on the system or connect or disconnect cables during periods of lightning activity. |
| Warning
Do not touch the power supply when the power cord is connected. For systems with a power switch, line voltages are present within the power supply even when the power switch is OFF and the power cord is connected. For systems without a power switch, line voltages are present within the power supply when the power cord is connected. |
Follow these guidelines when working on equipment powered by electricity:
Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. It occurs when electronic printed circuit cards are improperly handled and can result in complete or intermittent failures. Always follow ESD prevention procedures when removing and replacing cards. Ensure that the router chassis is electrically connected to earth ground. Wear an ESD-preventive wrist strap, ensuring that it makes good skin contact. Connect the clip to an unpainted surface of the chassis frame to safely channel unwanted ESD voltages to ground. To properly guard against ESD damage and shocks, the wrist strap and cord must operate effectively. If no wrist strap is available, ground yourself by touching the metal part of the chassis.
 | Caution For safety, periodically check the resistance value of the antistatic strap, which should be between 1 and 10 megohms (Mohm). |
You will need the following tools and parts to install a 4E1 data compression AIM on the router:
The 4E1 data compression AIM does not require an external network connection; it attaches directly to an internal AIM slot on the Cisco 3660 motherboard. (See Figure 1.)
The procedure for installing a 4E1 data compression AIM consists of:
1. Removing the motherboard tray
2. Installing the 4E1 data compression AIM
3. Replacing the motherboard tray
The sections that follow describe these procedures.
This section describes the procedure for removing the motherboard tray. You must remove the motherboard tray to access the internal components.
| Warning
Do not touch the power supply when the power cord is connected. Line voltages are present within the power supply even when the power switch is OFF and the power cord is connected. |
| Warning
Before removing the motherboard tray, disconnect the telephone-network cables to avoid contact with telephone-network voltages. |
To remove the motherboard tray:
Step 1 Power OFF the router.
Step 2 Disconnect all cables from the motherboard panel.
Step 3 Loosen the captive mounting screw on the front of the motherboard tray. (See part 1 of Figure 2.)
Step 4 Rotate the tray levers to their open position (out and away from the motherboard tray). (See part 2 of Figure 2.)
Step 5 Pull the tray levels to slide the motherboard tray out of the chassis. (See part 3 of Figure 2).
To install a 4E1 data compression AIM in the internal AIM slot, do the following:
Step 1 Remove one of the metal screws that is holding down the motherboard. (See Figure 3 for the location of the screw.)
Step 2 Attach the metal standoff provided with the 4E1 data compression AIM in place of the screw removed in Step 1. (See Figure 4 for the location.)
Step 3 Attach the plastic standoff to the motherboard. (See Figure 4 for the location.)
Step 4 Insert the 4E1 data compression AIM into the AIM connector. Ensure that the plastic standoff fits into the hole on the 4E1 data compression AIM (See Figure 4.)
Step 5 Insert the metal screw removed in Step 1 through the 4E1 data compression AIM into the metal standoff attached in Step 2. (See Figure 5.)
To replace the motherboard tray in the chassis:
Step 1 Align the motherboard tray with the guides in the chassis and slide it gently into the slot. (See part 1 of Figure 6.)
Step 2 Push the motherboard tray into place until you feel its edge connector mate securely with the connector on the backplane. (See part 2 of Figure 6.)
Step 3 Rotate the tray levers in to their closed position so that the motherboard tray is secure. (See part 3 of Figure 6.)
Step 4 Fasten the motherboard tray's captive mounting screw into the hole on the chassis, using a Phillips screwdriver. (See part 4 of Figure 6.)
Step 5 Apply the AIM-COMPR4 label that comes with the 4E1 compression AIM onto the faceplate of the motherboard tray.
Step 6 Reinstall the chassis on the wall, rack, desktop, or table.
Step 7 Reconnect all cables.
The command-line interface (CLI) commands that support the 4E1 data compression AIM use the following conventions:
This section lists some useful 4E1 data compression AIM commands. Refer to the Cisco IOS configuration guides and command references for more information on 4E1 data compression AIM commands.
Router> show diag 0
Slot 0:
C3600 Mother board 2FE(TX) port adapter, 2 ports
Port adapter is analyzed powered off
Port adapter insertion time unknown
EEPROM contents at hardware discovery:
Hardware revision 255.255 Board revision UNKNOWN
Serial number 4294967295 Part number 800-11534335-255
Test history 0xFF RMA number 255-255-255
EEPROM format version 1
EEPROM contents (hex):
0x20:01 B3 FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x30:FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
Compression AIM 0:
4E1 Compression AIM module
Board Revision :<01>
EEPROM format version 4
EEPROM contents (hex):
0x00:04 FF 40 01 2E 42 01 00 FF FF FF FF FF FF FF FF
0x10:FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x20:FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x30:FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x40:FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x50:FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x60:FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x70:FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
| AIM Slot | Element in AIM | Compression Element Number |
|---|---|---|
0 | 0 | 0 |
0 | 1 | 1 |
1 | 0 | 2 |
1 | 1 | 3 |
Router> show pas caim stats 0
CompressionAim0
ds:0x80F56A44 idb:0x80F50DB8
422074 uncomp paks in --> 422076 comp paks out
422071 comp paks in --> 422075 uncomp paks out
633912308 uncomp bytes in--> 22791798 comp bytes out
27433911 comp bytes in --> 633911762 uncomp bytes out
974 uncomp paks/sec in--> 974 comp paks/sec out
974 comp paks/sec in --> 974 uncomp paks/sec out
11739116 uncomp bits/sec in--> 422070 comp bits/sec out
508035 comp bits/sec in --> 11739106 uncomp bits/sec out
433 seconds since last clear
holdq: 0 hw_enable: 1 src_limited: 0 num cnxts: 4
no data: 0 drops: 0 nobuffers: 0 enc adj errs: 0 fallbacks: 0
no Replace: 0 num seq errs: 0 num desc errs: 0 cmds complete: 844151
Bad reqs: 0 Dead cnxts: 0 No Paks: 0 enq errs: 0
rx pkt drops: 0 tx pkt drops: 0 dequeues: 0 requeues: 0
drops disabled: 0 clears: 0 ints: 844314 purges: 0
no cnxts: 0 bad algos: 0 no crams: 0 bad paks: 0
# opens: 0 # closes: 0 # hangs: 0
The existing compression implementation for Point-to-Point Protocol (PPP) interfaces allows you to specify compression using the following interface configuration mode commands. Refer to the Cisco IOS configuration guides and command references for more information on these commands.
Use the following Frame Relay interface commands to configure compression for each individual Frame Relay port. Refer to the Cisco IOS configuration guides and command references for more information on these commands.
Use the following Frame Relay map commands to configure compression for each individual data-link connection. Refer to the Cisco IOS configuration guides and command references for more information on 4E1 data compression AIM commands.
The equipment described in this document 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 B 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, Inc. could void the FCC approval and negate your authority to operate the product.
For service and support for a product purchased from a reseller, contact the reseller. Resellers offer a wide variety of Cisco service and support programs, which are described in the section "Service and Support" in the information packet that shipped with your chassis.
For service and support for a product purchased directly from Cisco, use CCO.
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.
Cisco documentation and additional literature are available in a CD-ROM package, which ships with your product. The Documentation CD-ROM, a member of the Cisco Connection Family, is updated monthly. Therefore, it might be more current than printed documentation. To order additional copies of the Documentation CD-ROM, contact your local sales representative or call customer service. The CD-ROM package is available as a single package or as an annual subscription. You can also access Cisco documentation on the World Wide Web at http://www.cisco.com, http://www-china.cisco.com, or http://www-europe.cisco.com.
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Posted: Mon Feb 7 23:24:06 PST 2000
Copyright 1989 - 2000©Cisco Systems Inc.