3com S7906E Guide De Référence

 

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# Configure the DIS name as LOCALAREA.  

<Sysname> system-view 

[Sysname] interface vlan-interface 10 

[Sysname-Vlan-interface10] isis dis-name LOCALAREA 

isis dis-priority value [ level-1 | level-2 ] 

undo isis dis-priority [ level-1 | level-2 ] 

Interface view 

2: System level 

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.  

Use the isis dis-priority command to specify a DIS priority at a specified level for an interface.  

Use the undo isis dis-priority command 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. 

There is no backup DIS in IS-IS and the router with a priority of 0 can also participate in DIS election.  

 

This command is not available in loopback interface view.  

 

# Configure the level-2 DIS priority as 127 for VLAN-interface 10.  

<Sysname> system-view