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
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Chapter 18 Configuring MLPPP Backhaul
dIPHC Usage Notes
• The Cisco MWR 2941 supports dIPHC for UDP traffic only.
• The Cisco MWR 2941 supports up to 300 IPHC sessions over 3 multilinks .
• The Cisco MWR 2941 supports only the IEFT format of IPHC.
• The Cisco MWR 2941 supports dIPHC only for UDP traffic.
• After enabling dIPHC on an interface, ensure that you “flap” the interface by using the shutdown
and no shutdown commands in interface configuration mode for the configuration to take effect.
• If a QoS policy is attached to the multilink interface on which IPHC has been enable, ensure that
you configure the platform header-compression match access-group command in interface
configuration mode to apply an extended named Access Control List (ACL) of static flows (source
IP address, destination IP address, and destination port) to compress using IPHC.
You must configure the matching ACL as an extended named access-list and add the static flow
configuration to a Multilink interface that is in an UP state and on which the ip rtp
header-compression command is configured.
Note If you modify parameters for an MLPPP bundle while it is active, the changes do not take effect until the
Cisco MWR 2941 renegotiates the bundle connection.
To enable dIPHC offload on an multilink interface, complete the following task:
Command Purpose
Step 6
configure terminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 7
interface multilink number
Example:
Router# configure interface
multilink 1
Enters multilink interface configuration mode to configure the multilink
bundle.
Step 8
ip rtp header-compression
ietf-format
Example:
Router(config-if)# ip rtp
header-compression ietf-format
Enables IEFT RTP header compression.
Note The Cisco MWR 2941 support only IEFT RTP header
compression.
Step 9
shutdown
Example:
Router(config-if)# shutdown
Disables the interface.
Step 10
no shutdown
Example:
Router(config-if)# no shutdown
Enables the interface.