R2511-HP MSR Router Series Layer 2 - WAN Command Reference(V5)

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In addition to enabling FRF.20 (FRF.20 IPHC) compression with the fr compression iphc command in
interface view, you can alternatively enable the function when you configure static address mapping with
the fr map ip command.
Examples
# Enable FRF.20 compression on the frame relay interface Serial 2/0.
<Sysname> system-view
[Sysname] interface serial 2/0
[Sysname-Serial2/0] fr compression iphc
fr iphc
Use fr iphc to enable IP header compression function, including RTP/TCP header compression.
Use undo fr iphc { nonstandard | tcp-include } to disable this function.
Use undo fr iphc { rtp-connections | tcp-connections } to restore the default compression connection
numbers of RTP and TCP.
Syntax
fr iphc { nonstandard | rtp-connections number1 | tcp-connections number2 | tcp-include }
undo fr iphc { nonstandard | rtp-connections | tcp-connections | tcp-include }
Default
The number of RTP compression connections is 16, and the number of TCP compression connections is
16.
Views
Frame relay interface view, MFR interface view
Default command level
2: System level
Parameters
nonstandard: Nonstandard compatible compression format.
rtp-connections number1: Number of RTP compression connections, in the range 3 to 1000.
tcp-connections number2: Number of TCP compression connections, in the range 3 to 256. tcp-include:
Includes TCP header compression when performing RTP compression.
Examples
# Configure the number of RTP compression connections as 200 on the frame relay Serial 2/0.
<Sysname> system-view
[Sysname] interface serial2/0
[Sysname-Serial2/0] fr iphc rtp-connections 200
Related commands
• fr map ip
• fr compression iphc