Command Reference Guide

3Com Router 3000 Ethernet Family
Command Reference Guide Chapter 1 PPP and MP Configuration Commands
3Com Corporation
1-21
1.1.24 timer hold
Syntax
timer hold seconds
undo timer hold
View
Serial interface view
Parameter
seconds: Time interval for the interface to send keepalive packet in seconds. The value
ranges from 0 to 32767 and defaults to 10.
Description
Use the timer hold command to set the timer to send keepalive packet.
Use the undo timer hold command to restore the default value.
For the very slow data links, the seconds parameter must not be set too small. Because
the long datagram can only be transferred totally after a long time, the transfer of
keepalive datagram is delayed. The data link would be regarded to be broken if the
interface has not received the keepalive packet from the other end for many keepalive
periods. When the keepalive time is set to a very long time, the link is considered
broken by the other end, and then is closed.
At the two ends of a PPP link, the same keepalive interval is recommended.
Related command: display interface.
Example
# Set the PPP timer hold to 20 seconds.
[3Com-Serial1/0/0] timer hold 20
1.2 PPP Link Efficiency Mechanism Commands
1.2.1 debugging ppp compression iphc rtp
Syntax
debugging ppp compression iphc rtp { all | context_state | error | full_header |
general_info }
undo debugging ppp compression iphc rtp { all | context_state | error |
full_header | general_info }