
Configuring Data Compression Services
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117352-D Rev. 00
Hardware Compression for the BN
The BN supports the following compression daughterboards:
• AG2104037 - Octal Sync with a 32-contexts hardware compression
daughterboard
• AG2104038 - Octal Sync with a 128-contexts hardware compression
daughterboard
• Advanced compression coprocessor daughterboard with 128 or 256 contexts
installed on the FRE-2-060E processor module
Hardware Compression for the ASN
The hardware compression net modules for the ASN can compress data
transmitted over WAN networks attached to dual and quad synchronous,
MCE1/ISDN PRI, MCT1/ISDN, dual synchronous with ISDN BRI, and
Quad BRI net modules. One compression net module in a single ASN can provide
hardware compression for all the net modules on that router. It does not provide
compression for any other ASN in the stack.
The compression net module is available in both a 32-contexts and a 128-contexts
version.
The ASN supports the following compression net modules:
• AF2104007 - 32-contexts hardware compression net module
• AF2104012 - 128-contexts hardware compression net module
Hardware Compression Contexts for WCP
A
context
refers to compression and decompression for a single virtual
circuit (VC). Compression hardware maps a context to specific regions of
compression and decompression memory.
• A 32-contexts compression daughterboard or net module can run compression
simultaneously over 31 continuous packet compression (CPC) contexts, each
using an 8 KB history size, with one shared 8 KB packet-by-packet
compression (PPC) context.
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