Gossip Protocol

Gossip Protocol - https://developer.hashicorp.com/consul/docs/architecture/gossip

gossip are implemented with Serf library in Consul.

LAN gossip

LAN gossip occurs between all agents in a single datacenter with each agent sending a periodic probe to random agents from its member list. Both client and server agents participate in the gossip.

Gossip Protocol on serf.io - https://www.serf.io/docs/internals/gossip.html