mendagen den 28 februari 2011 15.15.21 skrev Claudio Jeker: > On Mon, Feb 28, 2011 at 03:08:05PM +0100, fredrik danerklint wrote: > > Hi! > > > > I need some help with an configuration of OpenBGP. > > > > I have four routers that is connected with p-2-p links between each > > other: > > > > R1 <-> R2 <-> R3 <-> R4 > > > > I've only seen networks announced to the nearest router that it is > > connected to. > > > > For example: R1 see R2 but R1 cannot see R3 etc.. > > > > There is no other router deamon running on the servers (ie no ospfd). > > > > I think this must be some basic error that I have made. > > > > The configuration files is very basic ie: no filter rules at all and > > there is an "allow from any". > > > > All the routers have an uniq router id. All routers announce an uniq > > network that the others don't have. > > If you use the same AS on all 4 routers then you need to full mesh the > four routers (iBGP sessions). Another option would be to use the > route-reflector support. This is how BGP works.
Fair enough. I have now tested to use three different AS number on the routers so they all act like eBGP in between them (I have in this test skipped router R4). Only router R2 sees everything. R1 see what R2 announce but not R3 and the same is true for router R3 that it can't see what R1 announce. Still, it must be something obviously that I have missed with this configuration for OpenBGP shall work in a configuration like this? -- //fredan
