526 CHAPTER 32: PPP LINK EFFICIENCY MECHANISM CONFIGURATION COMMANDS■ When IPHC TCP header compression is applied on an MP link, the compressionis performed on the VA (virtual access) interfaces. In this case, you can checkthe compression information on MP templates, such as VT or Dialer.■ When IPHC TCP header compression is applied on a normal PPP link, thecompression is performed on the physical link. In this case, you can check thecompression information on the physical interfaces only.Example # Display statistics about IPHC TCP header compression. display ppp compression iphc tcpdisplay ppp compression stac-lzsSyntax display ppp compression stac-lzs [ interface-type interface-number ]View Any viewParameter interface-type interface-number: Specifies an interface by its type and number.Description Use the display ppp compression stac-lzs command to view statistics aboutSTAC-LZS compression.Note that:■ When STAC-LZS header compression is applied on an MP link, the compressionis performed on the VA (virtual access) interfaces. In this case, you can checkthe compression information on MP templates, such as VT or Dialer.■ When STAC-LZS compression is applied on a normal PPP link, the compressionis performed on the physical link. In this case, you can check the compressioninformation on the physical interfaces only.Example # Display information about STAC-LZS compression. display ppp compression stac-lzsStaz-lzs compressionInterface: Serial1/1:0Received:Compress/Error/Discard/Total: 302/0/0/302 (Packets)Sent:Compress/Error/Total: 302/0/302 (Packets)ip tcp vjcompressSyntax ip tcp vjcompressundo ip tcp vjcompressView Interface view
