SOO can be used for loop detection, but only if your bgp peerings don't strip extended communities.
another dirty hack would be to get the peer to aggregate your 'remote' prefixes towards you (without as-set) to conceal the ASN. beware that ebgp routes are prefered over ibgp by default though - this is a gun & and your feet look tempting. /Pete On 6. jan. 2012, at 22:01, Stuart Henderson <s...@spacehopper.org> wrote: > On 2012-01-06, Donald Reichert <silvershadow...@gmx.de> wrote: >> Hi list, >> >> I'd like to replace some Ciscos by OpenBSD machines. >> >> On the routers I have configured the possibility to span networks from our own AS over peerings, Cisco speak: neighbor x.x.x.x allowas-in >> >> This is needed for disjunct networks. >> >> I didn't find a clue how to do this with OpenBGPd - any hints? >> >> Thanks, >> >> Donald > > Not currently possible, it will need code changes. Normally this check > is done to prevent route loops. It shouldn't be too hard to naively hack > this type of option into place, but I'm not sure what else might need > to be done to avoid loops.
