What is the purpose of a Null0 route in the routing table?

Questions BankWhat is the purpose of a Null0 route in the routing table?
ITExamAnswers Staff asked 2 months ago
What is the purpose of a Null0 route in the routing table?

  • to redistribute external routes into EIGRP
  • to prevent routing loops
  • to act as a gateway of last resort
  • to prevent the router from sending EIGRP packets

Explanation: EIGRP for IPv4 automatically installs a Null0 summary route into the routing table when EIGRP automatic summarization is enabled and there is at least one EIGRP learned subnet. Null0 is a virtual interface that is a route to nowhere and is used to prevent routing loops for destinations that are included in a summary network but do not have a specific entry in the routing table.

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