R3721-F3210-F3171-HP High-End Firewalls Network Management Command Reference-6PW101

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If neither level-1 nor level-2 is specified in this command, the DIS priority applies to both Level-1 and
Level-2.
On an IS-IS broadcast network, a router should be elected as the DIS at each routing level. You can
specify a DIS priority at a level for an interface. The greater the interface’s priority is, the more likelihood
it becomes the DIS. If multiple routers in the broadcast network have the same highest DIS priority, the
router with the highest SNPA (Subnetwork Point of Attachment) address (SNPA addresses are MAC
addresses on a broadcast network) becomes the DIS.
IS-IS has no backup DIS and the router with a priority of 0 can also participate in DIS election.
NOTE:
This command is not available in loopback interface view.
Examples
# Configure the DIS priority on Level-2 as 127 for GigabitEthernet 4/2.
<Sysname> system-view
[Sysname] interface GigabitEthernet 4/2
[Sysname-GigabitEthernet4/21] isis dis-priority 127 level-2
isis enable
Syntax
isis enable [ process-id ]
undo isis enable
View
Interface view
Default level
2: System level
Parameters
process-id: Specifies a IS-IS process ID, ranging from 1 to 65535. The default is 1.
Description
Use isis enable to enable an IS-IS process on the interface.
Use undo isis enable to disable IS-IS.
No IS-IS routing process is enabled on an interface by default.
Related commands: isis, network-entity.
Examples
# Create IS-IS routing process 1, and enable it on GigabitEthernet 4/2.
<Sysname> system-view
[Sysname] isis 1
[Sysname-isis-1] network-entity 10.0001.1010.1020.1030.00
[Sysname-isis-1] quit
[Sysname] interface GigabitEthernet 4/2
[Sysname-GigabitEthernet4/2] isis enable 1