Bidirectional Forwarding Detection for IPv6 BGP Neighbor and Static Routes
This feature adds bidirectional forwarding detection for IPv6 BGP neighbor and provides support for IPv6 BGP NBR reachability detection by using BFD protocol. When a BFD session goes from UP to DOWN, BFD informs BGP to bring the neighbor (NBR) down, until BFD returns to an UP state.
You create the BFD session by adding the bfd parameter to the vRouter configuration using the bfd parameter for the command, vrouter-bgp-modify. IPv6 BFD sessions for BGP NBRs are hosted in Netvisor ONE. The BFD session starts when you add the bfd parameter the BGP vRouter configuration.
CLI network-admin@Leaf1 > vrouter-bgp-neighbor-show
vrouter-name  neighbor ver remote-as msg_rcvd msg_sent up/down state/pfxrcd multi-protocol
------------  -----------  ---  ---------  --------  --------  ------  -------------- --------------
vr10   2002:100::2 4 51000 189 193         00:00:49 0 ipv6-unicast
Netvisor ONE supports IPv6 static route reachability detection using BFD protocol. Add IPv6 BFD sessions by specifying two end point IPv6 addresses, a source IPv6 address and a destination IPv6 address. The source IPv6 address must be a known local IPv 6 address. When a BFD session is up, Netvisor ONE assesses all the IPv6 static routes configured with a gateway or a BFD destination IPv6 address matching the destination IPv6 address of the BFD session. When Netvisor ONE finds a match, this static route installs in Routing Information Database (RIB) and Forwarding Information Database (FIB).
CLI network-admin@Leaf1 > vrouter-static-bfd-show
vrouter-name src-ip dst-ip type
------------ ------------------------- ------------------------- ----------
vr10 2006:100::2 2002:100::2 multi-hop