Hi all, Following up yet again, this time on some discussions to date regarding peering at NZIX using BGP. Just a couple of things which have sprung into my mind... Running OSPF and BGP simultaneously on NZIX routers will continue to be necessary until we have gained critical mass, and have reached a stage at which OSPF can be depreciated. Given that this is the short-term situation, it seems to me that we need to be careful of a couple of things. I am using CLEAR as an example only :) 1. If CLEAR is to peer with provider X over NZIX, then we will want a list of routes from provider X so that we can build a filter for routes received from X's BGP speaker(s). Until X's routes are entered and maintained in a RR of some kind (like the RADB), adds moves and changes to this list will be a manual process. [*] 2. If X makes more specific (i.e. longer prefix) advertisements using OSPF, those are the routes we will use. This is important if CLEAR is to peer with X somewhere else in addition to NZIX (e.g. WIX), as we will always prefer longer-prefix routes. 3. If X makes less specific (i.e. shorter prefix) advertisements across NZIX than they do their global transit provider, then we will likely route to them via Australia or the US. As we get things going, there will probably be times where routing becomes sub-optimal (or, in fact, completely broken :) Could I suggest that people going ahead with BGP across NZIX announce their progress to this list to help everybody track down problems if (when) they arise? [*] Not having route objects stored in a RR of some kind is going to make maintaining route filters a sticky business for all concerned. There is running code at Merit - do we have loose agreement that the RADB is a suitable place to do this? If there is interest, I am happy to dredge through the appropriate documentation and produce a quick-and-dirty guide to RADB object manipulation. Joe -- Joe Abley Tel +64 9 912-4065, Fax +64 9 912-5008 Network Architect, CLEAR Net http://www.clear.net.nz/ --------- To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog