ibgp bird 1.6 vs 2.0

Ondrej Zajicek santiago at crfreenet.org
Tue Apr 30 15:56:43 CEST 2019


On Tue, Apr 30, 2019 at 03:34:59PM +0200, Matěj Grégr wrote:
> Hello,
>   we have encountered a different ibgp behavior between bird 1.6 and
> bird2, and I am not sure if it's an intentional change in bird2 or a
> bug. Let's consider the following topology:
> 
>       192.168.1.0/24           192.168.2.0/24
>  R1 ------- ebgp ------- R2 ------- ibgp ------- R3
>    .2                 .1   .1                  .2
> 
> R1 uses AS 65001, R2 and R3 uses AS 65000. R1 propagates some routes
> (e.g. 10.10.10.0/24) via eBGP to R2, which sends them to R3 via iBGP.
> bird2 config on R3:
> 
> template bgp IBGP {
>         local as 65000;
>         direct;
>         ipv4 {
>                 next hop self;
>                 import keep filtered on;
>                 import all;
>         };
> }
> 
> protocol bgp from IBGP { neighbor 192.168.2.1 as 65000; }

What bird is config on R2?

I don't think there are any intentional changes w.r.t. your config.

-- 
Elen sila lumenn' omentielvo

Ondrej 'Santiago' Zajicek (email: santiago at 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."



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