Table Of Contents
Connecting Cisco Compression Network Modules to the Network
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
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
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)
•Switched 56-kbps data service unit/channel service unit (DSU/CSU)
Compression Network Module LEDs
Figure 2 Compression Network Module LEDs
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
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:
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