Command Manual – IPv4 Routing
H3C S7500E Series Ethernet Switches Chapter 4 IS-IS Configuration Commands
4-39
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.
 Note:
z 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.
z This command is not supported on the loopback interface.
z 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.
z 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 VLAN-interface 10.
<Sysname> system-view
[Sysname] interface Vlan-interface 10
[Sysname-Vlan-interface10] isis timer hello 20 level-2
4.1.36 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
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