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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.
Enabling source address check for hello packets on a PPP
interface
An IS-IS PPP interface can have a peer on a different network. Perform this task to configure an
IS-IS PPP interface to establish neighbor relationship only with a peer on the same network.
To enable source address check for hello packets on a PPP interface:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Enter interface view.
interface
interface-type
interface-number
N/A
3. Enable source
address check for
hello packets on a
PPP interface.
isis peer-ip-check
By default, an IS-IS PPP interface
can have a peer on a different
network.
The command applies only to
PPP interfaces.
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