JN0-649: Enterprise Routing and Switching, Professional (JNCIP-ENT)

By Juniper · Question Mode

QuestionQ16

EVPN

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With reference to the exhibit, how does router E quickly learn that the remote MAC addresses can no longer be reached through the router connected to the failed link?

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Explanation

EVPN Type 1 Ethernet Auto-Discovery per Ethernet Segment routes provide the mass-withdraw mechanism for a failure of connectivity to a multihomed Ethernet segment. When VTEP D loses its link to that segment, it withdraws its Type 1 route; remote VTEPs such as E update forwarding for the MAC addresses associated with that Ethernet segment without waiting for individual Type 2 MAC/IP withdrawals. RFC 7432, Section 8.2

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