300-515 · Question #137
300-515 Question #137: Real Exam Question with Answer & Explanation
The correct answer is A. BGP peering must be activated under the IPv6 address family.. MP-BGP separates each address family into its own “activate” stanza. Simply establishing the IPv4 session isn’t enough - under router bgp … you must enter address-family ipv6 unicast (or vpnv6 unicast for IPv6 VPNs) and issue neighbor <IP> activate. This tells BGP to carry and ex
Question
Options
- ABGP peering must be activated under the IPv6 address family.
- BThe bgp default ipv4-unicast command must be implemented on each router participating in MP-
- CBGP must be deployed in a fully meshed architecture within the autonomous system.
- DThe participating routers must be configured within the same autonomous system
Explanation
MP-BGP separates each address family into its own “activate” stanza. Simply establishing the IPv4 session isn’t enough - under router bgp … you must enter address-family ipv6 unicast (or vpnv6 unicast for IPv6 VPNs) and issue neighbor <IP> activate. This tells BGP to carry and exchange IPv6 NLRI over that session.
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