On Mon, Jan 06, 2020 at 06:25:30PM +0000, Neil Jerram wrote:
On Sun, Dec 22, 2019 at 3:03 PM Ondrej Zajicek <santiago@crfreenet.org> wrote:
On Sat, Dec 21, 2019 at 12:39:43AM +0100, Nico Schottelius wrote:
I have had a look at OSPF, but for our relatively simple network it looks like an overkill. Do you have any other recommendations for what to run the IGP with instead?
The main reason I so far tried to stay on iBGP only is to reduce complexity.
Well, you can run just IBGP, if you use direct + 'next hop self' options, which should be OK in your simple topology.
According to my understanding of the BIRD code, 'next hop self' is only relevant when exporting a locally originated route to a BGP peer. So, assuming the original question was about what happens on R1 and R2, I would not expect it to be relevant at all. Is that right?
Option 'next hop self' is relevant in both exporting locally originated route to a BGP (i.e. a route without existing bgp_next_hop attribute) and exporting route from BGP to another BGP (i.e. a route with existing bgp_next_hop attribute). See bgp_use_next_hop() and bgp_use_gateway() functions and their usage. -- Elen sila lumenn' omentielvo Ondrej 'Santiago' Zajicek (email: santiago@crfreenet.org) OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, wwwkeys.pgp.net) "To err is human -- to blame it on a computer is even more so."