User Manual - Configuration Guide (Volume 3)

Chapter 5

Versatile Routing Platform

IPHC Configuration

5.2 IPHC Configuration

5.2.1 Configuration Task List of IPHC

The configuration tasks of IPHC include:

zEnable/disable RTP header compression

zConfigure the maximum connection number of RTP header compressions

zConfigure the maximum connection number of TCP header compressions

zConfigure the enabling of the Cisco-compatible RTP header compression

zConfigure the removal of udp_chk field in the UDP header.

5.2.2Enable/disable RTP header compression

When RTP header compression is enabled, TCP header compression will be enabled accordingl. If the RTP header compression is disabled, the TCP header compression will also be disabled.

Please make the following configuration in the interface configuration mode.

Table VC-5-1Enable/Disable RTP header compression

Operation

Command

 

 

Enable RTP header compression

ip rtp header-compression

Disable RTP header compression

no ip rtp header-compression

By default, the interface will not perform RTP header compression on the packet.

It should be pointed out for notice here,

1)The subscriber must configure RTP header compression command on both ends of the links at the same time.

2)After TCP header compression is enabled, fast forwarding will not be performed on the packet compressed.

3)After the configuration is completed, only when the shutdown and no shutdown operation are performed on the interface can the configuration take effect.

5.2.3.Configure the Max. Connection Number of RTP Header Compressions

The subscriber can specify the maximum connection number on an interface that performs RTP header compression.

Please perform the following configurations in interface configuration mode.

Table VC-5-2Configure the maximum connection number of RTP header compression

Operation

Command

 

 

Configure the maximum connection number of RTP header

ip rtp compression-connections number

compression

 

Restore the default value of the maximum connection number of RTP header compression

no ip rtp compression-connections

By default, the maximum connection number of TCP header compression that the interface allows is 16. The value ranges from 4 to 1000.

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Huawei v200r001 user manual Iphc Configuration, Configuration Task List of Iphc, Enable/disable RTP header compression