159
Interface: Ethernet1/1 Circuit Id: 0000.0000.0004.01
State: Up HoldTime: 23s Type: L2 PRI: 64
# Display information about IS-IS interfaces of Router A.
[RouterA] display isis interface
Interface information for IS-IS(1)
---------------------------------
Interface: Ethernet1/1
Id IPv4.State IPv6.State MTU Type DIS
001 Up Down 1497 L1/L2 No/No
# Display IS-IS interfaces of Router C.
[RouterC] display isis interface
Interface information for IS-IS(1)
---------------------------------
Interface: Ethernet1/1
Id IPv4.State IPv6.State MTU Type DIS
001 Up Down 1497 L1/L2 Yes/No
# Display information about IS-IS interfaces of Router D.
[RouterD] display isis interface
Interface information for IS-IS(1)
---------------------------------
Interface: Ethernet1/1
Id IPv4.State IPv6.State MTU Type DIS
001 Up Down 1497 L1/L2 No/Yes
The output shows that when the default DIS priority is used, Router C is the DIS for Level-1, and
Router D is the DIS for Level-2. The pseudonodes of Level-1 and Level-2 are 0000.0000.0003.01
and 0000.0000.0004.01.
# Configure the DIS priority of Router A.
[RouterA] interface ethernet 1/1
[RouterA-Ethernet1/1] isis dis-priority 100
# Display information about IS-IS neighbors of Router A.
[RouterA] display isis peer
Peer information for IS-IS(1)
----------------------------
System Id: 0000.0000.0002
Interface: Ethernet1/1 Circuit Id: 0000.0000.0001.01
State: Up HoldTime: 29s Type: L1(L1L2) PRI: 64
System Id: 0000.0000.0003
Interface: Ethernet1/1 Circuit Id: 0000.0000.0001.01
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