3com MSR 20-20 참조 매뉴얼

ppp compression iphc tcp-connections number

Interface view

number: The maximum connection number of TCP header compression. The value 
ranges from 3 to 256.

Use the ppp compression iphc tcp-connections command to configure the 
maximum number of connections in TCP header compression.

Use the undo ppp compression iphc tcp-connections command to restore 
the default value, which is 16.

TCP is connection oriented; the number of TCP connections that a link can 
accommodate is relatively large. The use of compression however requires the 
router to maintain some information for each connection when compressing 
headers. To restrict the memory load generated by compression, you can use the 
ppp compression iphc tcp-connections command to limit the number of 
compression-enabled TCP connections to three for example. The packets on the 
fourth TCP connection are not compressed as a result.

The configuration takes effect only after you perform the shutdown and then the 
undo shutdown operations on the interface. If the configuration is for an MP 
bundle, you should perform the operations on all MP member interfaces.

# Set the number of compression-enabled TCP connections to 10 on interface 
Serial 1/0.

<Sysname> system-view

[Sysname] interface serial 1/0

[Sysname-Serial1/0] ppp compression iphc tcp-connections 10 

Interface view

None

Use the ppp compression stac-lzs command to enable STAC-LZS compression 
for PPP.