526CHAPTER 32: PPP LINK EFFICIENCY MECHANISM CONFIGURATION COMMANDS

When IPHC TCP header compression is applied on an MP link, the compression is performed on the VA (virtual access) interfaces. In this case, you can check the compression information on MP templates, such as VT or Dialer.

When IPHC TCP header compression is applied 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.

Example # Display statistics about IPHC TCP header compression.

<Sysname> display ppp compression iphc tcp

display ppp compression stac-lzs

Syntax display ppp compression stac-lzs [ interface-typeinterface-number]

View Any view

Parameter interface-typeinterface-number: Specifies an interface by its type and number.

Description Use the display ppp compression stac-lzscommand to view statistics about STAC-LZS compression.

Note that:

When STAC-LZS header compression is applied on an MP link, the compression is performed on the VA (virtual access) interfaces. In this case, you can check the compression information on MP templates, such as VT or Dialer.

When STAC-LZS compression is applied 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.

Example # Display information about 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

Syntax ip tcp vjcompress

undo ip tcp vjcompress

View Interface view

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3Com MSR 30, MSR 50 Display ppp compression stac-lzs, Ip tcp vjcompress, Syntax ip tcp vjcompress Undo ip tcp vjcompress