Reference Guide

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Command Modes
INTERFACE
Command
History
Usage
Information
Hello packets are held for a length of three times the value of the hello interval. Use a high hello
interval seconds to conserve bandwidth and CPU usage. Use a low hello interval seconds for faster
convergence (but uses more bandwidth and CPU resources).
Related
Commands
isis hello-multiplier
Specify the number of IS-IS hello packets a neighbor must miss before the router declares the
adjacency down.
Syntax
isis hello-multiplier multiplier [level-1 | level-2]
To return to the default values, enter no isis hello-multiplier [multiplier] [level-1 | level-2].
Parameters
Defaults
multiplier =3; level-1 (if not otherwise specified)
Command Modes
INTERFACE
Command
History
Usage
Information
The holdtime (the product of the hello-multiplier multiplied by the hello-interval) determines how long
a neighbor waits for a hello packet before declaring the neighbor is down so routes can be
recalculated.I
Related
Commands
isis hello padding
Turn ON or OFF padding of hello PDUs from the interface mode.
Version 9.0.2.0 Introduced on the S6000.
Version
8.3.7.0
Introduced on the S4810.
isis hello-multiplier Specifies the number of IS-IS hello packets a neighbor must miss before the
router should declare the adjacency as down.
S6000
multiplier
Specifies an integer that sets the multiplier for hello holding time.
Never configure a hello-multiplier lower then the default (3).
Range: 3 to 1000
Default: 3
level-1
(OPTIONAL) Select this value to configure the hello multiplier independently for Level 1
adjacencies.
This is the default.
level-2
(OPTONAL) Select this value to configure the hello multiplier independently for Level 2
adjacencies.
Version 9.0.2.0 Introduced on the S6000.
Version
8.3.7.0
Introduced on the S4810.
isis hello-interval Specify the length of time between hello packets.
S6000