A city leaf shows BGP Established to a spine but receives zero pref…

Question

A city leaf shows BGP Established to a spine but receives zero prefixes from that peer. Where should troubleshooting focus first?

Accepted Answer

Inspect address-family enablement and export/import routing policy on both peers for missing advertisements — Established just means the BGP handshake worked—like a phone call that connected while nobody sent the spreadsheet. Dig into families and export/import policy when the prefix count is zero.

Answer

Replace the optical transceiver because Established state proves routing policy cannot be involved

Answer

Disable the underlay entirely and rebuild using only static default routes to each spine

Answer

Lower the leaf’s CPU threshold alarms so empty RIBs no longer generate tickets

A city leaf shows BGP Established to a spine but receives zero prefixes from that peer. Where should troubleshooting focus first?

Short Explanation

Full Explanation