Specifications

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Cisco MWR 2941 Mobile Wireless Edge Router Release 3.5 Software Configuration Guide, Cisco IOS Release 15.1(3)MR
OL-26895-01
Chapter 18 Configuring MLPPP Backhaul
Enabling Real-Time Transport Protocol (RTP) Header Compression On a Multilink Inteface
To enable RTP header compression, follow these steps while in the interface configuration mode:
Enabling Distributed IPHC Offload on a Multilink Interface
Additionally, you can configure distributed IPHC (dIPHC) on a multilink interface for improved
Multilink Point-to-Point Protocol (MLPPP) performance.
Distributed IP Header Compression (dIPHC) allows the Cisco MWR 2941 to compress IP packet headers
for more efficient use of bandwidth.
Command Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
• Enter your password if prompted.
Step 2
configure terminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 3
interface multilink number
Example:
Router# configure interface
multilink 1
Enters multilink interface configuration mode to configure the multilink
bundle.
Step 4
Router(config-if)# ip rtp
header-compression [ietf-format]
[periodic-refresh]
Example:
Router(config-if)# ip rtp
header-compression ietf-format
periodic-refresh
Enable RTP header-compression using the ip rtp header-compression
command. The syntax is as follows:
• ietf-format—(Optional) Indicates that the Internet Engineering Task
Force (IETF) format of header compression will be used.
• periodic-refresh—(Optional) Indicates that the compressed IP
header will be refreshed periodically.
The example enables RTP header-compression in the Internet
Engineering Task Force (IETF) format by suppressing the IP ID in the
RTP/UDP header compression.
Note IP header compression is only supported when MLPPP operates
on the host processor; it is not supported when MLPPP is
offloaded.
Step 5
exit
Example:
Router(config)# exit
Router#
Exit configuration mode.