Command Reference Guide

3Com Router 3000 Ethernet Family
Command Reference Guide
Chapter 4 Integrated IS-IS Configuration Commands
3Com Corporation
4-25
ISIS protocol maintains the adjacency between the adjacent routers by sending and
receiving Hello messages. If the local router does not receive a Hello message from the
peer within an interval, it regards the neighbor unavailable. The interval is the ISIS
holddown time.
In ISIS, the holddown time can be regulated by configuring the number of invalid Hello
messages. That is, the local router regards its neighbor unavailable if it has not
received the specific number of Hello messages consecutively.
If you do not specify Level-1 or Level-2 in the command, the system applies the number
of invalid Hello messages to Level-1 and Level-2.
Related command: isis timer hello.
Example
# Set the number of invalid Hello messages to 10.
[Router] isis timer holding-multiplier 10
4.1.29 isis timer lsp
Syntax
isis timer lsp time
undo isis timer lsp
View
Interface view
Parameter
time: Specifies the LSP interval, ranging from 1 to 1000 and measured in milliseconds.
The default value is 33 milliseconds.
Description
Use the isis timer lsp command to configure minimum IS-IS LSP interval on the
interface.
Use the undo isis timer lsp command to restore the default setting.
Related command: isis timer retransmit.
Example
# Set the LSP interval on Interface serial1/0/0 to 500 milliseconds.
[3Com ] interface Interface serial1/0/0
[3Com -Serial1/0/0] isis timer lsp 500