406
<SwitchC> system-view
[SwitchC] ospf
[SwitchC-ospf-1] area 0
[SwitchC-ospf-1-area-0.0.0.0] network 3.3.3.9 0.0.0.0
[SwitchC-ospf-1-area-0.0.0.0] network 20.1.1.0 0.0.0.255
[SwitchC-ospf-1-area-0.0.0.0] quit
[SwitchC-ospf-1] quit
3. Enable MPLS and LDP:
# Configure Switch A.
[SwitchA] mpls lsr-id 1.1.1.9
[SwitchA] mpls ldp
[SwitchA-ldp] quit
[SwitchA] interface vlan-interface 2
[SwitchA-Vlan-interface2] mpls enable
[SwitchA-Vlan-interface2] mpls ldp enable
[SwitchA-Vlan-interface2] quit
# Configure Switch B.
[SwitchB] mpls lsr-id 2.2.2.9
[SwitchB] mpls ldp
[SwitchB-ldp] quit
[SwitchB] interface vlan-interface 2
[SwitchB-Vlan-interface2] mpls enable
[SwitchB-Vlan-interface2] mpls ldp enable
[SwitchB-Vlan-interface2] quit
[SwitchB] interface vlan-interface 3
[SwitchB-Vlan-interface3] mpls enable
[SwitchB-Vlan-interface3] mpls ldp enable
[SwitchB-Vlan-interface3] quit
# Configure Switch C.
[SwitchC] mpls lsr-id 3.3.3.9
[SwitchC] mpls ldp
[SwitchC-ldp] quit
[SwitchC] interface vlan-interface 3
[SwitchC-Vlan-interface3] mpls enable
[SwitchC-Vlan-interface3] mpls ldp enable
[SwitchC-Vlan-interface3] quit
4. Enable BFD for MPLS, and configure BFD to verify LSP connectivity:
# Configure Switch A.
[SwitchA] mpls bfd enable
[SwitchA] mpls bfd 3.3.3.9 32
# Configure Switch C.
[SwitchC] mpls bfd enable
[SwitchC] mpls bfd 1.1.1.9 32
Verifying the configuration
# Display BFD information for LSPs on Switch A and Switch C, for example, on Switch A.
[SwitchA] display mpls bfd
Total number of sessions: 2, 2 up, 0 down, 0 init
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