Switch 7700 Command reference Guide, v2.0

174 CHAPTER 5: USING ROUTING PROTOCOL COMMANDS
level-2: indicate that the link cost corresponds to level-2
Description
■ Use the isis cost command to configure the link cost of this interface when
performing SPF calculation.
■ Use the undo isis cost command to restore the default link cost.
If neither Level 1 nor Level 2 is specified in the configuration, level-1 will be the
default value.
We recommend that you configure the appropriate link cost for all the interfaces.
Otherwise, the link cost in the calculation of IS-IS routes cannot reflect the link
cost.
Example
Set the link cost of the Level-2 link on Interface Vlan-interface 1 to 5.
[SW7700]interface Vlan-interface 1
[SW7700-Vlan-interface1]isis cost 5 level-2
isis dis-priority Syntax
isis dis-priority value [ level-1 | level-2 ]
undo isis dis-priority [ level-1 | level-2 ]
View
VLAN interface view
Parameter
value: The priority when selecting DIS. Its value ranges 0 to 127, and the default
priority is 64.
level-1: Specify the priority when selecting level-1 DIS.
level-2: Specify the priority when selecting level-2 DIS.
If the level is not specified, it defaults to setting the Level-1 priority.
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 commands: area-authentication-mode,
domain-authentication-mode.