Command Manual – Routing Protocol 
Quidway S8500 Series Routing Switches  Chapter 4  Integrated IS-IS Configuration Commands
 
Huawei Technologies Proprietary 
4-20 
View 
Interface view 
Parameter 
value: The priority when selecting DIS. Its value ranges 0 to 127, and the default priority 
is 64.  
level-1: Specifies the priority when selecting Level-1 DIS.  
level-2: Specifies the priority when selecting Level-2 DIS.  
If the level is not specified, the default priority level is Level-1.  
Description 
Use the isis dis-priority command to configure the priority of an interface for the DIS 
election. 
Use the undo isis dis-priority command to restore the default priority. 
The IS-IS protocol does not concern the concept of backup DIS. The router with the 
priority 0 can also run for the DIS, which is different from the DR election of OSPF.  
Related command: area-authentication-mode, domain-authentication-mode. 
Example 
# Set the priority of Interface Vlan-interface 10 to 127.  
[Quidway] interface Vlan-interface 10 
[Quidway-Vlan-interface10] isis dis-priority 127 level-2 
4.1.22  isis enable 
Syntax 
isis enable [ tag ] 
undo isis enable [ tag ] 
View 
Interface view 
Parameter 
tag: The name given to an IS-IS routing process, when executing the isis command in 
the system view. If not specified, it is null. 
Description 
Use the isis enable command to configure the interface to activate the corresponding 
IS-IS routing process.