Multiprotocol BGP (MBGP) JN0-683 Practice Questions (Page 3)

Questions 11–15

1. 11foundation · easy

   What is the primary purpose of route reflection in an EVPN-VXLAN fabric?

   • ATo enable VXLAN encapsulation on leaf devices
   • BTo reduce the number of BGP sessions required by avoiding a full mesh of iBGP peers
   • CTo improve the data-plane forwarding performance
   • DTo provide redundancy for BGP sessions
   Reveal Solution Discussion Select an answer first
2. 12foundation · easy

   In MBGP for EVPN-VXLAN, what is the role of Route Targets (RTs)?

   • ATo set the VXLAN VNI for the data plane
   • BTo specify the BGP next hop for EVPN routes
   • CTo make EVPN routes unique across different VRFs
   • DTo control which EVPN routes are imported into a VRF
   Reveal Solution Discussion Select an answer first
4. 13expert · hard

   An engineer is troubleshooting an EVPN-VXLAN fabric where hosts in VLAN 100 can communicate within the same leaf, but cannot communicate with hosts in VLAN 100 on a different leaf. The BGP EVPN sessions are up. The engineer runs 'show route advertising-protocol bgp 10.0.0.2' on the source leaf and sees type-2 routes being advertised. On the destination leaf, 'show route receive-protocol bgp 10.0.0.1' shows the type-2 routes, but 'show ethernet-switching table' does not show the remote MAC addresses. What is the most likely cause?

   • AThe route target on the type-2 routes does not match the VRF import target on the destination leaf.
   • BThe MAC address is not being advertised because the host has not sent any traffic.
   • CThe route distinguisher is different on each leaf, causing the routes to be treated as different VRFs.
   • DThe BGP session is using multihop, which prevents the EVPN routes from being installed.
   Reveal Solution Discussion Select an answer first
5. 14application · medium

   A network engineer is verifying the EVPN control plane on a leaf device. The engineer wants to confirm that the leaf is learning remote MAC addresses via type-2 routes and remote IP prefixes via type-5 routes. Which command provides a consolidated view of all EVPN routes received from a specific BGP peer?

   • Ashow route table bgp.evpn.0
   • Bshow bgp summary
   • Cshow route receive-protocol bgp 10.0.0.1
   • Dshow evpn mac-table
   Reveal Solution Discussion Select an answer first
6. 15expert · hard

   A service provider is deploying a large EVPN-VXLAN fabric with 100 leaf devices and 8 spine devices. The spines are configured as route reflectors. The engineer notices that some leaf devices are receiving duplicate EVPN routes from multiple spines. What is the most likely cause of this issue?

   • AThe leaf devices are configured with the same route distinguisher.
   • BThe BGP sessions between the leaves and spines are using different local-address settings.
   • CThe EVPN address family is not enabled on the route reflectors.
   • DThe route reflectors are configured with different cluster IDs.
   Reveal Solution Discussion Select an answer first