Once a BGP session is established, routers will exchange two types of messages: KEEPALIVE and UPDATE. Keepalive messages are sent to let a neighboring router know we are still alive, but just didn’t have any updates to send. The update message carries three...
BGP is older than IPv6. Even BGP-4, the version we still use today, predates IPv6: the first BGP-4 RFC (RFC 1654) was published in July 1994, while RFC 1883, the first IPv6 RFC, wasn’t published until December 1995. And unlike protocols like RIP and OSPF, which...
