Configuring the DIS Priority for Broadcast Interfaces
The designated intermediate system (DIS) is introduced in Establishing Adjacencies. When you configure the DIS priority, higher priority means higher election precedence (60 gets elected before 50).
To configure the DIS priority, use the following
command:
configure
isis [vlan all | {vlan} vlan_name] priority priority {level[1 | 2]}
Note
DIS priority 0 is the lowest priority value. Unlike an OSPF DR election, a DIS priority of 0 does not make a router ineligible for DIS election.