Do not announce to $ASN:
Do not announce at all:
Announce to all:
Announce to $ASN:

59645:0:$ASN
59645:0:0
59645:1:1
59645:1:$ASN

May also be applied to learned routes from downstreams.
Internal routes used in iBGP propagation.
Default for self-originated DFZ prefixes.
Selective announcements.

Learned from upstream $ASN:
Learned from peer $ASN:
Learned from routeserver $ASN:
Learned from downstream $ASN:

59645:100:$ASN
59645:101:$ASN
59645:102:$ASN
59645:103:$ASN

All direct sessions, also via IX.

Also reannounce 59645:103:* to all upstreams, peers, and downstreams.