What is the main capability of the MPLS Option B Inter-AS L3VPN?

The correct answer is C. It enables the exchange of VPNv4 routes between ASBR using MP-BGP. MPLS Inter-AS Option B allows ASBRs in different autonomous systems to exchange VPNv4 routes using MP-BGP. Each AS maintains its own MPLS core, and only labeled VPNv4 routes are exchanged between the ASBRs. This provides separation of MPLS domains while still enabling L3VPN…

Service Provider VPN Technologies

Question

Options

AIt supports full-mesh VPNs between participating autonomous systems.
BIt leverages MP-BGP to distribute labeled IPv4 routes across multiple autonomous systems.
CIt enables the exchange of VPNv4 routes between ASBR using MP-BGP.
DIt provides full-mesh connectivity between PE routers in different autonomous systems to improve

How the community answered

(28 responses)

A
4% (1)
C
96% (27)

Explanation

MPLS Inter-AS Option B allows ASBRs in different autonomous systems to exchange VPNv4 routes using MP-BGP. Each AS maintains its own MPLS core, and only labeled VPNv4 routes are exchanged between the ASBRs. This provides separation of MPLS domains while still enabling L3VPN connectivity across AS boundaries.

Topics

#Option B Inter-AS#MP-BGP#VPNv4#ASBR

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