peerLivenessDetection  
  The liveness detection protocol used for the BGP peer.
The requested liveness detection protocol for the BGP peer.
- bgp-keepalive: The standard BGP keep alive mechanism (RFC4271) that is stable but may take longer to fail-over in cases of network impact or router failure.
- bfd: An additional Bidirectional Forwarding Detection (BFD) protocol (RFC5880) that enables fast failover by using more sensitive liveness detection.
Defaults to bgp-keepalive.