300-510 SPRI: Implementing Cisco Service Provider Advanced Routing SolutionsDemo

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QuestionQ107

Routing Policy and Manipulation

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Refer to the exhibit. An engineer is investigating a traffic-steering problem with the color-only automated steering mechanism. BGP does not automatically steer traffic into an SR policy that has the route’s specified color, irrespective of next hop. The Layer 2 configuration is correct, and the physical device connection operates normally. Which additional command sequence must the engineer add to resolve the issue?

  • A Cisco(config)# segment-routing -Cisco(config-sr)# traffic-eng -Cisco(config-sr-te)# policy P1 -Cisco(config-sr-te-policy)# color 1 end-point ipv4 0.0.0.0
  • B Cisco(config)# segment-routing traffic-engCisco(config-sr-te)# policy P1 -Cisco(config-sr-te-policy)# color 1 end-point ipv4 1.1.1.1Cisco(config-sr-te-policy )# autorouteCisco(config-sr-te-policy-autoroute)# include all
  • C Cisco(config)# segment-routing -Cisco(config-sr)# traffic-eng -Cisco(config-sr-te)# policy P1 -Cisco(config-sr-te-policy)# color 1 end ipv4 1.1.1.1Cisco(config-sr-te-policy)# autoroute include all
  • D Cisco# configure -Cisco(config)# segment-routing -Cisco(config-sr)# traffic-eng -Cisco(config-sr-te)# policy P1 -Cisco(config-sr-te-policy)# color 1 end-point
Explanation

Cisco IOS XR color-only automated steering uses an SR-TE policy with the matching color and an IPv4 null endpoint of 0.0.0.0. The null endpoint lets the policy match routes with that color regardless of their next-hop address. The route policy assigns color 1, so the required SR-TE policy is color 1 end-point ipv4 0.0.0.0.

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