Avi Load Balancer supports multihop BGP. A plain peer configuration is supported in all its variations, including iBGP multihop.
This section explains the following:
- eBGP multihop:
-
BGP peers are more than one hop away and in a different autonomous system. BGP peers are not directly connected.
- iBGP multihop:
-
BGP peers are in the same autonomous system but more than one hop away.
This feature is supported for IPv6.
Configuring eBGP
To configure eBGP multihop, a per-peer configuration parameter, that is, ebgp_multihop
specifies the number of next hops. The following are the two main configuration sections:
Configuring Avi Load Balancer Controller:
The eBGP-multihop peer. The multihop peer must be configured with the same subnet as that of the interface network.
Static/ default route to reach the BGP peer.
Configuring BGP peer and intermediate routers:
Static or default route configuration on the Avi Load Balancer Controller, intermediate router, and BGP peer.