NOTE:
This command is not available in loopback interface view.
Examples
# Configure the DIS name as
LOCALAREA
.
<Sysname> system-view
[Sysname] interface vlan-interface 10
[Sysname-Vlan-interface10] isis dis-name LOCALAREA
isis dis-priority
Syntax
isis dis-priority
value
[
level-1
|
level-2
]
undo
isis dis-priority
[
value
] [
level-1
|
level-2
]
View
Interface view
Default level
2: System level
Parameters
value
: Specifies a DIS priority for the interface, ranging from 0 to 127.
level-1
: Applies the DIS priority to Level-1.
level-2
: Applies the DIS priority to Level-2.
Description
Use
isis dis-priority
to specify a DIS priority at a specified level for an interface.
Use
undo isis dis-priority
to restore the default priority of 64 for Level-1 and Level-2.
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 Level-2 DIS priority as 127 for VLAN-interface 10.
<Sysname> system-view
[Sysname] interface vlan-interface 10
[Sysname-Vlan-interface10] isis dis-priority 127 level-2
164
