H3C S7500 Series Ethernet Switches Command Manual

Command Manual – Routing Protocol
H3C S7500 Series Ethernet Switches Chapter 4 Integrated IS-IS Configuration Commands
4-22
Use the undo isis mesh-group command to delete an interface from a mesh group.
An interface is not in any mesh group and can flood LSP normally by default.
For an interface not in a mesh group, it follows the normal process to flood the received
LSP to other interfaces. For the NBMA network with high connectivity and multiple
point-to-point links, this will cause repeated LSP flooding and bandwidth waste.
After an interface is added to a mesh group, it will only flood a received LSP to
interfaces that do not belong to the same mesh group.
When you add an interface to a mesh group or block the interface, make sure to retain
some redundancy so that a link failure will not affect the normal LSP packet flooding.
Examples
# Add the IS-IS-enabled VLAN-interface 20 to mesh-group 3.
<H3C> system-view
System View: return to User View with Ctrl+Z.
[H3C-Vlan-interface20] isis mesh-group 3
4.1.24 isis timer csnp
Syntax
isis timer csnp seconds [ level-1 | level-2 ]
undo isis timer csnp [ level-1 | level-2 ]
View
Interface view
Parameters
seconds: Interval of sending CSNP packets over broadcast network in seconds,
ranging from 1 to 65,535, with the default as 10 seconds.
level-1: Specifies the Level-1 time interval for sending CSNP packets.
level-2: Specifies the Level-2 time interval for sending CSNP packets.
If neither the level-1 keyword nor the level-2 keyword is specified, both the level-1
interval and the level-2 interval are set.
Description
Use the isis timer csnp command to specify the time interval for sending CSNP
packets over a broadcast network.
Use the undo isis timer csnp command to resume the default value of 10 seconds.