170 
[RouterC-isis-1] network-entity 10.0000.0000.0003.00 
[RouterC-isis-1] quit 
[RouterC] interface ethernet 1/1 
[RouterC-Ethernet1/1] isis enable 
[RouterC-Ethernet1/1] quit 
[RouterC] interface ethernet 1/2 
[RouterC-Ethernet1/2] isis enable 
[RouterC-Ethernet1/2] quit 
3.  Configure BFD functions: 
# Enable BFD and configure BFD parameters on Router A. 
[RouterA] bfd session init-mode active 
[RouterA] interface ethernet 1/1 
[RouterA-Ethernet1/1] isis bfd enable 
[RouterA-Ethernet1/1] bfd min-receive-interval 500 
[RouterA-Ethernet1/1] bfd min-transmit-interval 500 
[RouterA-Ethernet1/1] bfd detect-multiplier 7 
# Enable BFD and configure BFD parameters on Router B. 
[RouterB] bfd session init-mode active 
[RouterB] interface ethernet 1/1 
[RouterB-Ethernet1/1] isis bfd enable 
[RouterB-Ethernet1/1] bfd min-receive-interval 500 
[RouterB-Ethernet1/1] bfd min-transmit-interval 500 
[RouterB-Ethernet1/1] bfd detect-multiplier 8 
Verifying the configuration 
# Display the BFD session information on Router A. 
<RouterA> display bfd session 
 
 Total Session Num: 1     Up Session Num: 1     Init Mode: Active 
 
 IPv4 Session Working Under Ctrl Mode: 
 
 LD/RD          SourceAddr      DestAddr        State    Holdtime    Interface 
 3/1            192.168.0.102   192.168.0.100   Up       1700ms      Eth1/1 
# Display routes destined for 120.1.1.0/24 on Router A.  
<RouterA> display ip routing-table 120.1.1.0 verbose 
 
Summary Count : 1 
 
Destination: 120.1.1.0/24 
   Protocol: ISIS            Process ID: 1 
  SubProtID: 0x1                    Age: 04h20m37s 
       Cost: 10              Preference: 10 
        Tag: 0                    State: Active Adv 
  OrigTblID: 0x0                OrigVrf: default-vrf 
    TableID: 0x2                 OrigAs: 0 
      NBRID: 0x26000002          LastAs: 0 
     AttrID: 0xffffffff        Neighbor: 0.0.0.0