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Question 13

As shown in the figure, in a scenario where a VXLAN tunnel is dynamically established through BGP EVPN, VTEP1 transmits a BGP EVPN Type 2 route to VTEP2. The EVPN RT value is 20:1. Which of the following items are incorrect? (Choose two.)

VTEP2 directly discards the route.

VTEP2 compares the RT carried in the route and finds that it is different from the IRT of the EVPN instance bound to BD 20. Therefore, VTEP2 discards the route.

VTEP2 compares the RT carried in the route with the IRT of the EVPN instance bound to BD 20. Because the RTs are different, VTEP2 does not add the MAC address entry carried in the route to the MAC address table of BD 20.

VTEP2 compares the RT carried in the route with the IRT bound to the IP VPN instance VTEP_VBDIF20. Based on this, VTEP2 learns the IP route carried in the route advertisement packet and adds the route to the IP routing table of the IP VPN instance.

Correct Answer: A, B

In this scenario, the BGP EVPN Type 2 route from VTEP1 carries an RT value of 20:1, while the EVPN instance on VTEP2 that is bound to BD 20 has an IRT of 200:1. Since these RT values do not match, VTEP2 will discard the route. This means that VTEP2 will not process the route, and as a result, it will not add the MAC address entry to the MAC address table of BD 20. Therefore, the incorrect items are VTEP2 directly discarding the route as it specifies the action not aligned with the discard reason, and VTEP2 comparing the RT carried in the route and finding it different from the IRT of the EVPN instance bound to BD 20, leading to discarding the route.

Discussion

JevzaOptions: BC

Answer should be BC