1-561.1.1.9:2054 3.3.3.9 -/Vlan4 Tunnel1Configuring ordinary CR-LSP backup is almost the same as configuring hot CR-LSP backup except thatyou need to replace the mpls te backup hot-standby command with the mpls te backup ordinarycommand. Unlike in hot CR-LSP backup where a secondary tunnel is created immediately uponcreation of a primary tunnel, in ordinary CR-LSP backup, a secondary CR-LSP is created only after theprimary LSP goes down.6) Create a static route for routing MPLS TE tunnel traffic[SwitchA] ip route-static 20.1.1.2 24 tunnel 3 preference 1Perform the display ip routing-table command on Switch A. You can find a static route entry withTunnel1 as the outgoing interface.FRR Configuration ExampleNetwork requirementsOn a primary LSP Switch A → Switch B → Switch C → Switch D, use FRR to protect the link Switch B →Switch C and use BFD to detect the status of link Switch B→Switch C.Do the following:z Create a bypass LSP that traverses the path Switch B → Switch E → Switch C. Switch B is the PLRand Switch C is the MP.z Explicitly route the primary TE tunnel and the bypass TE tunnel with the signaling protocol beingRSVP-TE.Figure 1-10 Link protection using the FRR approachSwitch A Switch B Switch C Switch DSwitch EVlan-int1Loop0 Loop0 Loop0 Loop0Vlan-int1Vlan-int2Vlan-int2 Vlan-int3Vlan-int3Vlan-int4Vlan-int4Primary LSPBypass LSPVlan-int5Vlan-int5Loop0Device Interface IP address Device Interface IP addressSwitch A Loop0 1.1.1.1/32 Switch E Loop0 5.5.5.5/32Vlan-int1 2.1.1.1/24 Vlan-int4 3.2.1.2/24Switch B Loop0 2.2.2.2/32 Vlan-int5 3.3.1.1/24Vlan-int1 2.1.1.2/24 Switch C Loop0 3.3.3.3/32Vlan-int2 3.1.1.1/24 Vlan-int3 4.1.1.1/24Vlan-int4 3.2.1.1/24 Vlan-int2 3.1.1.2/24Switch D Loop0 4.4.4.4/32 Vlan-int5 3.3.1.2/24
