Configuring VJ header compression

Last Updated : May 03, 2023 |
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VJ header compression applies to TCP headers only.
  1. Optionally, use the ip tcp compression-connections command to control the number of TCP header compression connections supported on the interface.
    ADDITIONAL INFORMATION:
    Use the no form of this command to restore the default value of 16 connections.
    For example:
    Gxxx-001(config-if:Dialer 1)# ip tcp compression-connections 24
    Done!
  2. Use the ip tcp header-compression command to enable TCP header compression on the current interface.
    ADDITIONAL INFORMATION:
    The compression method employed is the VJ compression.
    Note:
    • The ip rtp header-compression command always overrides the ip tcp header-compression command. Both commands enable TCP header compression, but they differ in the methods employed.
    • The ip tcp header-compression iphc-format command always overrides the ip tcp header-compression command, and activates IPHC-type compression.
    For example:
    Gxxx-001# interface dialer 1
    Gxxx-001(config-if:Dialer 1)# ip tcp header-compression
    Done!
    Note:
    After header compression is enabled, any change to a header compression parameter is effective.
  3. To disable VJ TCP header compression on an interface, use the no ip tcp header-compression command in the interface context.