Command Reference Guide

3Com Router 3000 Ethernet Family
Command Reference Guide
Chapter 4 Integrated IS-IS Configuration Commands
3Com Corporation
4-22
The interface joining a mesh group only floods the received LSP to the interfaces
beyond the local mesh group.
Be sure to provide some redundancy when adding an interface to a mesh group or
blocking it, for avoiding the effect on the normal flooding of the LSP due to link failure.
Example
# Add interface serial1/0/0 to mesh group 3.
[3Com -Serial1/0/0] isis mesh-group 3
4.1.25 isis small-hello
Syntax
isis small-hello
undo isis small-hello
View
Interface view
Parameter
None
Description
Use the isis small-hello command to disable IS-IS to stuff Hello packets to the size of
interface MTU if their data sizes are smaller.
Use the undo isis small-hello command to restore the default to have IS-IS stuff Hello
packets to the size of interface MTU if their data sizes are smaller.
You are recommended to configure the isis small-hello command on the interfaces
with an MTU greater than 1500 bytes, such as tunnel and GE interfaces.
Example
# Disable ISIS to stuff Hello packets to the size of interface MTU when their data sizes
are smaller.
[Router-tunnel0/0/0] isis small-hello
4.1.26 isis timer csnp
Syntax
isis timer csnp seconds [ level-1 | level-2 ]
undo isis timer csnp [ level-1 | level-2 ]