1. Opening Graceful Restart and Nonstop Routing are often grouped together under 'high availability,' but they solve the switchover...

1. Opening Graceful Restart asks a neighboring router to keep forwarding on routes learned from a restarting BGP speaker while that speaker...

1. Opening Not every BGP failure needs BFD. A directly connected eBGP peer can often be reset immediately when the interface used to reach ...

1. Opening BFD is attractive because it can detect forwarding-path failure far faster than ordinary BGP timers. It is also dangerous when o...

1. Opening BGP's traditional liveness model is often summarized as 'keepalives every 60 seconds, dead after 180 seconds.' That ...

1. Opening Once TCP succeeds, BGP still has to agree on the OPEN message and optional capabilities. Many sessions that appear almost up are...

1. Opening BGP sessions are long-lived TCP connections and attractive disruption targets. Session authentication protects the TCP exchange ...

1. Opening BGP finite-state behavior sits on top of TCP. When engineers jump directly from Active state to route-map changes, they often sk...

1. Opening BGP peers exposed across routed infrastructure can receive spoofed packets that appear to target a valid session. GTSM uses the ...

1. Opening Directly connected eBGP is simple: each router normally peers to the adjacent interface address. Loopback peering improves endpo...