300-420 ENSLD Practice Questions: BGP Design for Enterprise Address Families, Policy and Scale

BGP Design for Enterprise: Address Families, Policy and Scale

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An enterprise has two data centers and several regional sites. The WAN team wants to deploy BGP for both IPv4 and IPv6, but IPv6 adoption will occur gradually. Which design approach best supports clean multi-address-family operation without mixing IPv4 and IPv6 policy logic?

Select one option.

Use only IPv4 BGP peering and redistribute IPv6 routes through OSPFv3 at each site
Run separate physical routers for IPv4 BGP and IPv6 BGP so that policies cannot overlap
Use one global BGP process but activate IPv4 and IPv6 neighbors only under the relevant address-family contexts
Use BGP address families and apply route policies separately within the IPv4 unicast and IPv6 unicast address-family sections
Enable IPv6 on all interfaces and allow BGP to automatically advertise all IPv6 connected routes

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