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3Com Switch 7750 Series
Command Reference Guide – Routing Protocol Chapter 4 Integrated IS-IS Configuration Commands
4-23
System View: return to User View with Ctrl+Z.
[3Com] interface Vlan-interface 10
[3Com-Vlan-interface10] isis timer csnp 15 level-2
4.1.25 isis timer hello
Syntax
isis timer hello seconds [ level-1 | level-2 ]
undo isis timer hello [ level-1 | level-2 ]
View
Interface view
Parameter
seconds: Interval in seconds for sending Hello packets, ranging from 3 to 255, with
the default as 10 seconds.
level-1: Specifies the time interval for sending Level-1 Hello packets.
level-2: Specifies the time interval for sending Level-2 Hello 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 hello command to specify the time interval for sending the
corresponding level Hello packets.
Use the undo isis timer hello command to resume the default value of 10 seconds.
The hello time interval must be configured respectively for the Level-1 and Level-2
packets on a broadcast network, because these two types of hello packets are sent
separately. A point-to-point link does not require this. The shorter the time interval is,
the more system resources will be occupied to send Hello packets, so you should
configure a proper time interval depending on the specific requirements.
Related command: isis timer holding-multiplier.
Example
# Configure Level-2 Hello packets to be sent every 20 seconds over Vlan-interface
10.
<3Com> system-view
System View: return to User View with Ctrl+Z.
[3Com] interface Vlan-interface 10
[3Com-Vlan-interface10] isis timer hello 20 level-2