On Wed, Nov 11, 2020 at 03:44:48PM +0200, Alex Rydzewski wrote:
Good times, bird community!
I'm have trouble with filter routes by "from" attribute.
Routes in Bird route table have data about router which the route has originated from: 80.239.201.11/32 via 193.124.176.1 on eth1 [kernel1 2020-08-11] * (10) 10.0.0.0/30 via 10.0.0.18 on bond0 [MyOSPF 2020-11-09] * I (150/20) [172.21.1.1] 154.47.36.2/32 via 193.124.176.1 on eth1 [kernel1 2020-08-13] * (10)
but if i try get that routes: show route where from = 172.21.1.1
I get empty respond without any errors. ... Explain me please, what i understand wrong about that?
Hello OSPF routes do not have meaningful 'from' attribute. This attribute describes a neighboring router from which we received such route. It makes sense for BGP, RIP and other vector/path distance routing protocols. OSPF protocol (and other link-state routing protocols) does not exchange routes, instead exchange network topology and compute routes locally, so these routes does not have valid 'from' attribute. What you see in '[172.21.1.1]' is not from, but ospf_router_id attribute, describing router id of a router originating that route. -- 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."