As shown in the figure, in the scenario of dynamically establishing a VXLAN tunnel through BGP EVPN, which of the following RT values is carried by the BGP EVPN Type2 route sent by VTEP1 to VTEP2?

Question

Exhibit

Options

• A10:1
• B200:1
• C20:1
• D100:1

• A
  80% (28)
• B
  6% (2)
• C
  11% (4)
• D
  3% (1)

Explanation

Option A (10:1) is correct because BGP EVPN Type 2 routes carry the Export RT of the originating VTEP - when VTEP1 advertises a MAC/IP route, it stamps it with its own configured Export RT value, which in this topology is 10:1.

Option C (20:1) is wrong because 20:1 is typically VTEP2's Export RT; it would appear on routes sent by VTEP2, not VTEP1. Option D (100:1) is wrong because that value usually belongs to a different network element in the figure (such as a BGP reflector or a different VPN instance), not VTEP1's export policy. Option B (200:1) is similarly misassociated - it does not correspond to VTEP1's export configuration in this scenario.

Memory tip: Think of Export RT as a return address label - VTEP1 stamps every route it sends out with its own Export RT (10:1), and VTEP2 only accepts that route if its Import RT matches 10:1. The sender's address, not the receiver's, goes on the envelope.

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