Fail over a BGP session under the change window

Practice the sequence you already learned for “Fail over a BGP session under the change window” until the order feels automatic. Drill IETF / ISP operations order from network-engineering training. Prefs are not changed until the peer, prefix-list, and rollback are confirmed.

1. Confirm the change ticket, peer, and prefix-list.
2. Announce the drain or prepend in the window.
3. Verify traffic has left the session you intend to take down.
4. Shift the session or the next-hop.
5. Confirm reachability and looking-glass views.
6. Do not clear BGP as a first troubleshooting step on a production edge.