Compression Network Modules

Table Of Contents

Connecting Cisco Compression Network Modules to the Network

Compression Network Modules

Interfaces Supported

Compression Network Module LEDs

Related Documents

Obtaining Documentation, Obtaining Support, and Security Guidelines

Connecting Cisco Compression Network Modules to the Network

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Revised: May 1, 2008, OL-12818-01

This guide describes how to connect Cisco compression network modules to your network. It contains the following sections:

•Compression Network Modules

•Interfaces Supported

•Compression Network Module LEDs

•Related Documents

•Obtaining Documentation, Obtaining Support, and Security Guidelines

Compression Network Modules

The compression network module (NM-COMPR) does not provide network interfaces of its own, but instead compresses and decompresses data passing through interfaces on other network modules or WAN interface cards in the router. (See Figure 1.)

Hardware compression is supported only over Point-to-Point Protocol (PPP) links. The compression network module supports only the Stacker compression algorithm.

Cisco IOS Release 11.3 and later releases allow Frame Relay compression support using the FRF.9 compression algorithm.

Figure 1 Compression Network Module

Interfaces Supported

The compression network module supports the following interfaces:

•Channelized T1 Integrated Services Digital Network (ISDN) Primary Rate Interface (PRI)

•Channelized E1 ISDN PRI

•ISDN Basic Rate Interface (BRI)

•Synchronous serial

•Switched 56-kbps data service unit/channel service unit (DSU/CSU)

Compression Network Module LEDs

Figure 2 shows compression network module LEDs. Table 1 describes their meaning.

Figure 2 Compression Network Module LEDs

Table 1 Compression Network Module LEDs

LED	Meaning
EN	Green indicates that the module has passed its self-tests and is available to the router.
ERROR	Amber indicates that an error was found, and if the LED remains on, that the error might prevent accurate compression. Off during normal operation.
ACTIVE	Green indicates that the module is ready to process data. It comes on when the boot process is complete and stays on during normal operation.

Related Documents

For additional information, see the following documents and resources.

Related Topic	Document Title
Regulatory compliance and safety information	Cisco Network Modules and Interface Cards Regulatory Compliance and Safety Information http://www.cisco.com/en/US/docs/routers/access/interfaces/rcsi/IOHrcsi.html
Cisco IOS software website and reference documentation	Cisco IOS Software http://www.cisco.com/web/psa/products/index.html?c=268438303

Obtaining Documentation, Obtaining Support, and Security Guidelines

For information on obtaining documentation, obtaining support, providing documentation feedback, security guidelines, and also recommended aliases and general Cisco documents, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:

http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html

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