Symptom

+ Prefixes are not advertised to eBGP neighbors. + eBGP peers have lower than default timers as well as a low value for 'advertisement-interval' ------- address-family ipv4 unicast advertisement-interval 1 -------

Conditions

+ For some users, this condition occurs every time a full switch reload takes place. + In the lab, the only way to recreate this is by performing a 'shut / no shut' of the BGP process.

Workaround

'clear ip bgp * soft' will restore all prefixes being advertised. Remove 'advertisement-interval 1' configuration parameter.

Further Problem Description