isis dis-priority
Function
The isis dis-priority command configures the priority of the interface that candidates for the Designated Intermediate System (DIS).
The undo isis dis-priority command restores the default priority.
By default, the Level-1 and Level-2 DIS priorities of a broadcast interface are 64.
Format
isis dis-priority priority [ level-1 | level-2 ]
undo isis dis-priority [ priority ] [ level-1 | level-2 ]
Parameters
| Parameter | Description | Value |
|---|---|---|
| priority | Specifies the priority for electing DIS. The greater the value of priority is, the higher the priority is. | The value ranges from 0 to 127. The default value is 64. |
| level-1 | Indicates the priority for electing Level-1 DIS. | - |
| level-2 | Indicates the priority for electing Level-2 DIS. | - |
Views
Ethernet interface view, Ethernet sub-interface view, Eth-Trunk interface view, Eth-Trunk sub-interface view, Tunnel interface view, Loopback interface view, Dialer interface view, VLANIF interface view, Virtual-Template interface view
Usage Guidelines
The configuration is useful only for the broadcast network.
If neither Level-1 nor Level-2 is specified in the command, configure the same priority for Level-1 and Level-2.
The priority is advertised in a Hello packet. The router with the highest priority is elected as the DIS. When multiple routers have the same priority, the router with the largest MAC address is elected as the DIS.
If the isis circuit-type command is run to emulate the interface as a P2P interface, the isis dis-priority command becomes invalid on the interface; after the undo isis circuit-type command is run to restore the broadcast interface, the isis dis-priority command becomes valid on the interface.