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Parameters seconds: Specifies the interval in seconds for sending Hello packets, ranging from
3 to 255.
level-1: Specifies the interval for sending Level-1 Hello packets.
level-2: Specifies the time interval for sending Level-2 Hello packets.
Description Use the isis timer hello command to specify the interval for sending hello
packets.
Use the
undo isis timer hello command to restore the default.
The default hello interval is 10 seconds.
n
■ If no level is specified, the hello interval applies to both Level-1 and Level-2 of
the current ISIS process. If a level is specified, the interval applies to the level.
■ This command is not supported on the loopback interface.
■ The broadcast link distinguishes between Level-1 and Level-2 packets, so you
need specify intervals for the two levels respectively. The point-to-point link
however does not distinguish, so you need not specify intervals respectively.
■ As the shorter the interval is, the more system resources will be occupied, you
should configure a proper interval as needed.
Related commands: isis timer holding-multiplier.
Examples # Configure Level-2 Hello packets to be sent every 20 seconds over the serial2/0
interface.
<Sysname> system-view
[Sysname] interface serial 2/0
[Sysname-Serial2/0] isis timer hello 20 level-2
isis timer holding-multiplier
Syntax isis timer holding-multiplier value [ level-1 | level-2 ]
undo isis timer holding-multiplier [ level-1 | level-2 ]
View Interface view
Parameters value: Number of hello intervals, in the range of 3 to 1000.
level-1: Applies the number to the Level-1 IS-IS neighbor.
level-2: Applies the number to the Level-2 IS-IS neighbor.
n
■ If neither level-1 nor level-2 is specified in the command, the number applies to
the current level IS-IS process.
■ This command is not available in loopback interface view.