When the BGP session between two routers is established, the two routers exchange prefixes and then start sending traffic for those prefixes to the neighboring router. But all good things must come to an end, including BGP sessions. When that happens, the router...
Border Gateway Protocol is unique among routing protocols because it requires a number of parameters to be configured manually on each side before two routers can communicate. As a result, it’s not uncommon for sessions to fail to be established. There are also...
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...
