! If necessary to receive prefixes from upstream provider, care is required ! don t accept RFC1918 etc prefixes http://www.ietf.org/internet-drafts/draft-manning-dsua-06.txt ! don t accept your own prefix ! don t accept default (unless you need it) ! don t accept prefixes longer than /24 ! cisco style MultiExitDescriminators bgp determenistic-med no auto-summary ! nicht classful ! sync stinkt oftmals no syncronisation ! bei ibgp neighbor ibgp set next-hop-self ! filtere asn von peers (setzt die private ASn = LOCAL AS! die werden NICHT dropped! EXTRA FILTERN!) neighbor ebgp remove-private-as