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

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QuestionQ71

Unicast Routing

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Refer to the exhibit. A network engineer has commissioned Router 1, which is connected to Router 2 and Router 5. Router 1 participates in IS-1S routing with the other routers, but it is not used for transit traffic. Traffic from Router 2 to Router 5 is expected to traverse Router 1, but instead it travels through Router 3 and Router 4. Which action resolves this issue?

  • A Remove the overload bit on Router 1.
  • B Add hello padding on Router 1
  • C Remove the hello padding on Router 5.
  • D Add the overload bit on Router 5.
Explanation

The IS-IS overload bit marks a router as unavailable for transit traffic while allowing traffic destined for that router. Removing the overload bit from Router 1 makes it eligible again in other routers’ shortest-path calculations, allowing Router 2-to-Router 5 traffic to use Router 1.

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