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    MPLS Tunnel Configuration Tasks

    Complete the following tasks to configure a tunnel interface. Configure the tunnel endpoint last; anything configured after the tunnel endpoint does not take effect until the tunnel is brought up the next time. You can perform all other tasks in any order.

    Note: Tunnel configuration tasks are relevant only for traffic engineering networks.

    1. Create the MPLS tunnel interface.
      host1(config)#interface tunnel mpls:boston
    2. (Optional) Configure the LSP to announce its endpoint to an IGP (sometimes referred to as registering the endpoint).
      host1(config-if)#tunnel mpls autoroute announce isis
    3. (Optional) Specify a tunnel metric to be used by an IGP in its SPF calculation.
      host1(config-if)#tunnel mpls autoroute metric absolute 100
    4. (Optional) Configure the path options used for the tunnel.
      host1(config-if)#tunnel mpls path-option 3 dynamic isis
    5. (Optional) Configure the bandwidth required for the tunnel.
      host1(config-if)#tunnel mpls bandwidth 1240
    6. (Optional) Configure preemption hold or setup priority.
      host1(config-if)#tunnel mpls traffic-eng priority 4 4
    7. (Optional) Configure resource class affinity.
      host1(config-if)#tunnel mpls traffic-eng affinity 0x000C3000 0xFFFFFFFC

      This example of a masked affinity matches only links configured with attribute flags from 0x000C3000 to 0x000C3003.

    8. (Optional) Configure retry timer options to apply to a specific tunnel to set up an LSP after a route or setup failure.
      host1(config-if)#tunnel mpls no-route retries 100 host1(config-if)#tunnel mpls no-route retry-time 45 host1(config-if)#tunnel mpls retries 250 host1(config-if)#tunnel mpls retry-time 65
    9. (Optional) Associate a text description with the tunnel.
      host1(config-if)#tunnel mpls description southshore
    10. Configure the tunnel endpoint.
      host1(config-if)#tunnel destination 10.12.21.5

    Published: 2014-08-18