show ip tcp header-compression

Last Updated : Nov 06, 2012 |
Displays TCP header compression statistics for a specific interface. If no interface is specified, it shows TCP header compression statistics for all interfaces.
Prolog information
Metadata
Keywords:

Syntax

show ip tcp header-compression [interface_name]

Parameters

Parameter
Description
Possible Values
Default Value
interface_name
The name of the interface

User level

read-only

Context

general

Example

To display TCP header compression statistics for all interfaces:
Gxxx-001(super)# show ip tcp header-compression
IP TCP header compression statistics:

Interface Dialer 1:
  Rcvd:    0 Full Headers, 0 Compressed, 0 Errors
  Sent:    0 Full Headers, 0 Compressed,
           0 Bytes Saved, 0 Bytes Sent,
           1.00 Efficiency Improvement Factor
  Connect: Inactive, 16 Rx Slots, 16 Tx Slots

Output fields

Name
Description
Rcvd
Information on received TCP packets, as follows:
  • Full Headers — the number of TCP packets with full headers received
  • Compressed — the number of TCP packets with compressed headers received
  • Errors — the number of packets discarded during de-compression due to errors
Sent
Information on sent TCP packets, as follows:
  • Full Headers — the number of TCP packets with full headers sent
  • Compressed — the number of TCP packets with compressed headers sent
  • Bytes Saved — the total saving in bytes due to compression
  • Bytes Sent — the total number of bytes sent after compression
  • Efficiency Improvement Factor — the improvement factor, calculated as (bytes saved + bytes sent)/ bytes sent (rounded to two decimal places)
Connect
Connection information, as follows:
  • Active/Inactive — whether TCP header compression is negotiated and working on this interface
  • Rx Slots — the number of TCP sessions to decompress
  • Tx Slots — the number of TCP sessions to compress