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

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Parameters
interface-type interface-number: Interface type and interface number.
|: Filters command output by specifying a regular expression. For more information about regular
expressions, see Fundamentals Configuration Guide.
begin: Displays the first line that matches the specified regular expression and all lines that follow.
exclude: Displays all lines that do not match the specified regular expression.
include: Displays all lines that match the specified regular expression.
regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.
Usage guidelines
When Stac LZS compression is enabled on an MP link, the compression is performed on the VA
interfaces. In this case, you can check the compression information on MP templates, such as VT or
Dialer.
When Stac LZS compression is enabled on a normal PPP link, the compression is performed on the
physical link. In this case, you can check the compression information on the physical interfaces only.
Examples
# Display the statistics on Stac LZS compression.
<Sysname> display ppp compression stac-lzs
Staz-lzs compression
Interface: Serial1/1:0
Received:
Compress/Error/Discard/Total: 302/0/0/302 (Packets)
Sent:
Compress/Error/Total: 302/0/302 (Packets)
ip tcp vjcompress
Use ip tcp vjcompress to enable VJ TCP header compression on a PPP-encapsulated interface.
Use undo ip tcp vjcompress to disable VJ TCP header compression.
Syntax
ip tcp vjcompress
undo ip tcp vjcompress
Default
VJ TCP header compression is disabled.
Views
Interface view
Default command level
2: System level
Usage guidelines
VJ TCP header compression must be enabled on both sides of a PPP link. Use these two commands in
centralized environments only.