Refer to the exhibit. Which Inter-AS L3VPN option is implemented if PE1 and PE2 have a direct connection and are sharing routes between CE1 and CE2 across a dedicated VRF?

The correct answer is B. Option B. Inter-AS Option B uses a direct eBGP MP-BGP session between the two AS-border PE routers (PE1 and PE2) inside a dedicated VRF to exchange VPNv4 routes and labels. This matches the exhibit’s description of a direct PE-to-PE connection carrying customer routes in a per-VRF BGP

L3VPN Services

Question

Exhibit

Options

AOption A
BOption B
COption C
DOption AB

How the community answered

(38 responses)

A
3% (1)
B
79% (30)
C
13% (5)
D
5% (2)

Explanation

Inter-AS Option B uses a direct eBGP MP-BGP session between the two AS-border PE routers (PE1 and PE2) inside a dedicated VRF to exchange VPNv4 routes and labels. This matches the exhibit’s description of a direct PE-to-PE connection carrying customer routes in a per-VRF BGP

Topics

#Inter-AS L3VPN#Option B#ASBR#VRF back-to-back

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