* Hyb <[EMAIL PROTECTED]> [2005-08-10 19:38]: > I could do with a sanity check in regards to a similar scenario. > > We have two providers, each providing us two diverse feeds. These come into > our IX network and subsequently two OpenBGPD routers, each of which have > two(*) NIC's. Obviously one of the NIC's goes to the IX switches and one to > the internal switches. > > I'm optimistically assuming that this setup is sufficient to run all four > sessions off both routers, with one router acting as standby care of CARP > and IBGP happening over the NIC's fixed addresses on the IX network. Have I > overlooked any glaring technical obstacles here? > > If not yet, what is the best/correct way to provide connectivity to all four > peers - multiple CARP devices with the same carpdev, or one CARP device with > multiple aliases? I'd imagine that a CARP device for each session/peer and > then the relevant 'depend-on' statement for each BGP neighbor would be most > flexible.
well, your description is not clear. usual setup: you take two machines. to the inside there's an IP on a carp interface - this is what you use as default gateway. to the outside, they each have their own IP(s), and all your uplinks talk to each of them. the two machines have an iBGP session too. there is no point in using carp there, actually, it hinders, since your uplinks give you one session to each. -- BS Web Services, http://www.bsws.de/ OpenBSD-based Webhosting, Mail Services, Managed Servers, ... Unix is very simple, but it takes a genius to understand the simplicity. (Dennis Ritchie)
