138
Step Command
Remarks
3.
Specify the hello multiplier.
isis timer holding-multiplier
value
[
level-1
|
level-2
]
The default setting is
3.
Specifying the interval for sending IS-IS CSNP packets
On a broadcast network, perform this task on the DIS that uses CSNP packets to synchronize LSDBs.
To specify the interval for sending IS-IS CSNP packets:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter interface view.
interface
interface-type
interface-number
N/A
3.
Specify the interval for
sending CSNP packets on the
DIS of a broadcast network.
isis timer csnp
seconds
[
level-1 |
level-2
]
The default setting is 10 seconds.
Configuring a DIS priority for an interface
On a broadcast network, IS-IS 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.
To configure a DIS priority for an interface:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter interface view.
interface
interface-type
interface-number
N/A
3.
Configure a DIS priority for
the interface.
isis dis-priority
value
[
level-1
|
level-2
]
The default setting is 64.
Disabling source address check for hello packets on a PPP
interface
On a P2P link, IS-IS checks the source IP address of hello packets from the peer. If the peer is not on the
same network, IS-IS discards the hello packets and does not establish neighbor relationship with the
peer.
An IS-IS PPP interface can have a peer on a different network. To establish neighbor relationship with the
peer, you must disable source address check for hello packets on the PPP interface.
To disable source address check for hello packets on a PPP interface:
