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Routing & Switching · Advanced

Multiprotocol BGP (MP-BGP)

Extensions to BGP (RFC 4760) that carry routing information for multiple address families such as IPv6, VPNv4, EVPN and multicast.

Definition

MP-BGP uses MP_REACH_NLRI and MP_UNREACH_NLRI attributes identified by AFI/SAFI. It underpins MPLS L3VPN (VPNv4/VPNv6), EVPN, 6PE, BGP-LS, Flowspec and IPv6 Internet routing. Neighbors must activate the address family.

Example

address-family vpnv4 / neighbor 10.255.0.2 activate / neighbor 10.255.0.2 send-community extended

Exam tip

VPNv4 sessions need send-community extended so route targets are carried.

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