Command Reference Guide

3Com Router 3000 Ethernet Family
Command Reference Guide Chapter 1 PPP and MP Configuration Commands
3Com Corporation
1-27
Example
# Set the number of compression-enabled RTP connections to 10 on interface
serial0/0/0.
[3Com-serial0/0/0] ppp compression iphc rtp-connections 10
1.2.9 ppp compression iphc tcp-connections
Syntax
ppp compression iphc tcp-connections number
undo ppp compression iphc tcp-connections
View
Interface view
Parameter
number: The maximum connection number (from 3 to 256) of TCP compression mode
on the interface. By default, the number is 16.
Description
Use the ppp compression iphc tcp-connections command to configure the
connection number of TCP compression mode.
Use the undo ppp compression iphc tcp-connections command to restore the
default connection number of TCP compression mode.
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 can become valid on an interface 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.
Example
# Set the number of compression-enabled TCP connections to 10 on interface
serial0/0/0.
[3Com-serial0/0/0] ppp compression iphc tcp-connections 10