Refer to the exhibit. What is the function of the Null0 route in the outputs displayed for R1 and R2?

IT Questions BankCategory: CCNPRefer to the exhibit. What is the function of the Null0 route in the outputs displayed for R1 and R2?

Refer to the exhibit. What is the function of the Null0 route in the outputs displayed for R1 and R2?
What is the function of the Null0 route in the outputs displayed for R1 and R2

  • to advertise the local /48 summary route
  • to force advertisements of only the /64 route entries to the neighbor routers
  • to force advertisements of only the /128 route entries to the neighbor routers
  • to invoke the split horizon rule to prevent routing loops

Explanation: In EIGRPv6, a Null0 route with an administrative distance of 5 is added to the routing table as a loop-prevention mechanism. Only the /48 summary prefix is received from the neighbor router and any of the more specific /64 and /128 route entries are suppressed. In this instance a Null0 route is populated on the router for the local /48 summary route advertisement.

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