Appendix A Cisco 3825 Mobile Wireless Edge Router RAN-O Command Reference

ip rtp header-compression

 

 

Unicast or Multicast RTP Packets

 

 

 

This command can compress unicast or multicast RTP packets, and, hence, multicast backbone

 

 

(MBONE) traffic can also be compressed over slow links. The compression scheme is beneficial only

 

 

when you have small payload sizes, as in audio traffic.

 

 

 

Examples

 

The following example enables RTP header compression on the Serial1/0/0 interface and limits the

 

 

number of RTP header compression connections to 10. In this example, the optional iphc-format

 

 

keyword of the ip rtp header-compressioncommand is specified.

 

 

Router> enable

 

 

 

Router# configure terminal

 

 

 

Router(config)# interface Serial1/0/0

 

 

 

Router(config-if)# encapsulation ppp

 

 

 

Router(config-if)#ip rtp header-compression iphc-format

 

 

Router(config-if)#ip rtp compression-connections 10

 

 

Router(config-if)# exit

 

 

 

The following example enables RTP header compression on the Serial1/0/0 interface and limits the

 

 

number of RTP header compression connections to 20. In this example, the optional iphc-format

 

 

keyword of the ip rtp header-compressioncommand is specified.

 

 

Router> enable

 

 

 

Router# configure terminal

 

 

 

Router(config)# interface Serial1/0/0

 

 

 

Router(config-if)# encapsulation ppp

 

 

 

Router(config-if)#ip rtp header-compression iphc-format

 

 

Router(config-if)#ip rtp compression-connections 20

 

 

Router(config-if)# exit

 

 

 

In the following example, RTP header compression is enabled on the Serial1/0/0 interface and the

 

 

optional periodic-refreshkeyword of the ip rtp header-compressioncommand is specified:

 

 

Router> enable

 

 

 

Router# configure terminal

 

 

 

Router(config)# interface Serial1/0/0

 

 

 

Router(config-if)# encapsulation ppp

 

 

 

Router(config-if)#ip rtp header-compression iphc-format periodic-refresh

 

 

Router(config-if)#ip rtp compression-connections 10

 

 

Router(config-if)# exit

 

 

 

 

 

Related Commands

 

Command

Description

 

 

 

 

 

 

clear ip rtp header-compression

Clears RTP header compression structures and statistics.

 

 

 

 

 

 

iprtp compression-connections

Specifies the total number of RTP header compression

 

 

 

connections that can exist on an interface.

 

 

 

 

 

 

show ip rtp header-compression

Displays RTP header compression statistics.

 

 

 

 

 

 

show running-config

Displays the contents of the currently running

 

 

 

configuration file or the configuration for a specific

 

 

 

interface, or map class information.

 

 

 

 

 

 

Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide

 

 

 

 

 

 

 

OL-15667-03

 

 

A-43

 

 

 

 

 

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Cisco Systems 3825 manual Unicast or Multicast RTP Packets, When you have small payload sizes, as in audio traffic