125
[SwitchA-LoopBack0] isis circuit-level level-2
[SwitchA-LoopBack0] quit
# Configure Switch B.
<SwitchB> system-view
[SwitchB] isis 1
[SwitchB-isis-1] network-entity 00.0005.0000.0000.0002.00
[SwitchB-isis-1] quit
[SwitchB] interface vlan-interface 1
[SwitchB-Vlan-interface1] isis enable 1
[SwitchB-Vlan-interface1] isis circuit-level level-2
[SwitchB-Vlan-interface1] quit
[SwitchB] interface vlan-interface 2
[SwitchB-Vlan-interface2] isis enable 1
[SwitchB-Vlan-interface2] isis circuit-level level-2
[SwitchB-Vlan-interface2] quit
[SwitchB] interface loopback 0
[SwitchB-LoopBack0] isis enable 1
[SwitchB-LoopBack0] isis circuit-level level-2
[SwitchB-LoopBack0] quit
# Configure Switch C.
<SwitchC> system-view
[SwitchC] isis 1
[SwitchC-isis-1] network-entity 00.0005.0000.0000.0003.00
[SwitchC-isis-1] quit
[SwitchC] interface vlan-interface 3
[SwitchC-Vlan-interface3] isis enable 1
[SwitchC-Vlan-interface3] isis circuit-level level-2
[SwitchC-Vlan-interface3] quit
[SwitchC] interface vlan-interface 2
[SwitchC-Vlan-interface2] isis enable 1
[SwitchC-Vlan-interface2] isis circuit-level level-2
[SwitchC-Vlan-interface2] quit
[SwitchC] interface loopback 0
[SwitchC-LoopBack0] isis enable 1
[SwitchC-LoopBack0] isis circuit-level level-2
[SwitchC-LoopBack0] quit
# Configure Switch D.
<SwitchD> system-view
[SwitchD] isis 1
[SwitchD-isis-1] network-entity 00.0005.0000.0000.0004.00
[SwitchD-isis-1] quit
[SwitchD] interface vlan-interface 3
[SwitchD-Vlan-interface3] isis enable 1
[SwitchD-Vlan-interface3] isis circuit-level level-2
[SwitchD-Vlan-interface3] quit
[SwitchD] interface loopback 0
[SwitchD-LoopBack0] isis enable 1
[SwitchD-LoopBack0] isis circuit-level level-2