4A0-D03: Nokia SR Linux EVPN and Data Center InterconnectDemo

By Nokia · Question Mode

QuestionQ14

Layer 2 EVPN

Which of the following functions of GARP is false?

  • A A host sends a GARP to update its own IP/MAC mapping to the other hosts in the subnet.
  • B All other hosts within the subnet will update their ARP tables.
  • C The GARP is sent as a broadcast.
  • D The other hosts in the subnet will acknowledge the receipt with a reply.
Explanation

A gratuitous ARP is an unsolicited, local-broadcast ARP announcement that advertises an IP-to-MAC mapping so receiving hosts can refresh applicable ARP-cache entries. It does not require, or cause, acknowledgement replies from the other hosts. RFC 5944 specifies that a gratuitous ARP is transmitted as a local broadcast and that receivers update an existing ARP-cache entry from the sender protocol and hardware addresses.

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