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Question 64 - JN0-480 discussion

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Which protocol is used to advertise EVPN routes?

A.
OSPF
Answers
A.
OSPF
B.
BGP
Answers
B.
BGP
C.
IS-IS
Answers
C.
IS-IS
D.
RIP
Answers
D.
RIP
Suggested answer: B

Explanation:

BGP is the protocol used to advertise EVPN routes. EVPN routes are a new type of BGP network layer reachability information (NLRI) that carry MAC address and IP prefix information for Ethernet VPNs. EVPN routes are exchanged between PEs using BGP multiprotocol extensions (MP-BGP) over MPLS, VXLAN, SR, or SRv6 tunnels. EVPN routes enable PEs to learn the reachability of MAC addresses and IP prefixes of different sites within the same EVPN instance. EVPN routes also support various features such as fast convergence, redundancy, aliasing, and inter-subnet routing. The other options are incorrect because:

A) OSPF is wrong because OSPF is an interior gateway protocol (IGP) that is used to advertise IP routes within an autonomous system. OSPF is not used to advertise EVPN routes, which are a type of BGP NLRI that carry MAC address and IP prefix information for Ethernet VPNs.

C) IS-IS is wrong because IS-IS is an interior gateway protocol (IGP) that is used to advertise IP routes and MPLS labels within an autonomous system. IS-IS is not used to advertise EVPN routes, which are a type of BGP NLRI that carry MAC address and IP prefix information for Ethernet VPNs.

D) RIP is wrong because RIP is an interior gateway protocol (IGP) that is used to advertise IP routes within an autonomous system. RIP is not used to advertise EVPN routes, which are a type of BGP NLRI that carry MAC address and IP prefix information for Ethernet VPNs.Reference:

EVPN Fundamentals

RFC 9136 - IP Prefix Advertisement in Ethernet VPN (EVPN)

EVPN Type-5 Routes: IP Prefix Advertisement

Understanding EVPN Pure Type 5 Routes

asked 18/09/2024
Sebastian Gryza
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