Specifying The Is-Is Hello Multiplier; Configuring A Dis Priority For An Interface - HP 3600 v2 series Configuration Manual

To do...
Specify the interval for sending
hello packets
Specify the interval for sending
CSNP packets on the DIS of a
broadcast network
NOTE:
The interval between hello packets sent by the DIS is 1/3 the hello interval set with the isis timer hello
command.

Specifying the IS-IS hello multiplier

If a neighbor receives no hello packets from the router within the advertised hold time, it considers the
router down and recalculates the routes. The hold time is the hello multiplier multiplied by the hello
interval.
Follow these steps to specify the IS-IS hello multiplier:
To do...
Enter system view
Enter interface view
Specify the number of hello packets a
neighbor must miss before declaring the
router is down
NOTE:
On a broadcast link, Level-1 and Level-2 hello packets are advertised separately; therefore, you need to
set a hello multiplier for each level. On a P2P link, Level-1 and Level-2 hello packets are advertised in P2P
hello packets, so you do not need to specify Level-1 or Level-2.

Configuring a DIS priority for an interface

On an IS-IS broadcast network, you must elect a router as the DIS at a routing level. You can specify a
DIS priority at a level for an interface. The greater the interface's priority, the more likely it becomes the
DIS. If multiple routers in the broadcast network have the same highest DIS priority, the router with the
highest MAC address becomes the DIS.
Follow these steps to specify a DIS priority for an interface:
To do...
Enter system view
Enter interface view
Specify a DIS priority for the
interface
Use the command...
isis timer hello seconds [ level-1 |
level-2 ]
isis timer csnp seconds [ level-1 |
level-2 ]
Use the command...
system-view
interface interface-type
interface-number
isis timer holding-multiplier value
[ level-1 | level-2 ]
Use the command...
system-view
interface interface-type
interface-number
isis dis-priority value [ level-1 |
level-2 ]
152
Remarks
Optional
10 seconds by default
Optional
10 seconds by default
Remarks
—
—
Optional
3 by default
Remarks
—
—
Optional
64 by default