EVPN Multihoming JN0-460 Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   What is a characteristic of traffic forwarding in single-active EVPN multihoming?

   • AAll traffic (unicast and BUM) is forwarded by a single designated PE.
   • BUnicast traffic is load-balanced across all PEs.
   • CTraffic is forwarded based on the ESI value.
   • DBUM traffic is forwarded by all PEs.
   Reveal Solution Discussion Select an answer first
2. 7expert · hard

   An EVPN all-active multihoming setup has two leaf switches (Leaf1 and Leaf2) connected to an access switch. Leaf1 is the designated forwarder (DF). A link between Leaf1 and the access switch fails, but Leaf1 is still operational. What happens to BUM traffic and known unicast traffic?

   • ABUM traffic is dropped, but known unicast traffic continues to be sent to Leaf1
   • BBUM traffic is re-routed to Leaf2 after DF re-election, and known unicast traffic is re-routed to Leaf2 immediately
   • CBUM traffic continues to be sent to Leaf1, and known unicast traffic is re-routed to Leaf2
   • DBoth BUM and known unicast traffic are dropped until Leaf1's link recovers
   Reveal Solution Discussion Select an answer first
4. 8foundation · easy

   In a campus fabric using EVPN multihoming, what is the typical role of STP?

   • ASTP is used to load balance traffic across multihomed links.
   • BSTP is typically disabled on multihomed links because EVPN provides loop prevention.
   • CSTP is required to prevent loops in the EVPN control plane.
   • DSTP is used to elect the designated forwarder.
   Reveal Solution Discussion Select an answer first
5. 9application · medium

   A leaf switch in an EVPN all-active multihoming setup fails completely. The access switch still has a link to the second leaf. What happens to the traffic forwarded by the failed leaf?

   • ATraffic is black-holed until the failed leaf recovers
   • BThe remaining leaf immediately takes over all forwarding for the segment
   • CThe access switch must be reconfigured to use the remaining leaf
   • DThe EVPN instance is torn down and rebuilt
   Reveal Solution Discussion Select an answer first
6. 10foundation · easy

   When would you choose single-active EVPN multihoming over all-active?

   • AWhen the CE device does not support link aggregation (LAG) and only one link can be active at a time.
   • BWhen you need to support multicast traffic.
   • CWhen you need to load balance traffic across multiple links.
   • DWhen you want to reduce the number of BGP sessions in the fabric.
   Reveal Solution Discussion Select an answer first