Madhuri,
Thank you for replying.
However, *all* of the routes are unreachable (because this is a IBGP
multihop session and it doesn't sit on the traffic path), none of the
core routers are sitting nexthop from this vm where I installed bird.
On 26/7/2015 2:23 AM, Madhuri wrote:
Hi Paul,
Sorry I misread your email.
instead of "import all" try with the following filter(on router where
u see these unreachable routes) to avoid unreachable routes.
import filter {
if dest = RTD_UNREACHABLE then {
reject;
}
else
accept;
};
Thanks,
Madhuri
On Sat, Jul 25, 2015 at 6:49 PM, Madhuri <[email protected]
<mailto:[email protected]>> wrote:
Hi,
Try to configure "next hop self" for rr clients in route reflector
config.
Thanks,
Madhuri
On Sat, Jul 25, 2015 at 5:19 PM, Paul S. <[email protected]
<mailto:[email protected]>> wrote:
Hi guys,
New BIRD user here, I'm trying to use bird to build a looking
glass / route collector.
All my core routers (I don't have a backbone network, so they
run separately) are forwarding the full table by treating the
bird system as a rr client. So far, this part of it works fine.
The sessions are IBGP (and multihop by nature). My problem is
the fact that bird classifies the routes as unreachable (as
they indeed are, but I don't intend to use them to forward)
and mentions this in the birdc lookups.
A sample is given at the bottom, as well as the very simple
config that I'm using right now (No tables, but I intend to
set up tables per peer ('location') later)
My question is how should I deal with this issue?
bird> show route 8.8.8.0/24 <http://8.8.8.0/24> all
8.8.8.0/24 <http://8.8.8.0/24> unreachable [dfw_cr_0 07:39:20
from 10.1.13.1] * (100/-) [AS15169i]
Type: BGP unicast univ
BGP.origin: IGP
BGP.as_path: 3491 15169
BGP.next_hop: 63.218.23.65
BGP.local_pref: 400
BGP.community: (3491,2000) (3491,2001) (3491,15169)
unreachable [syd_ocr_0 07:40:16 from
10.2.1.217] (100/-) [AS15169i]
Type: BGP unicast univ
BGP.origin: IGP
BGP.as_path: 15169
BGP.next_hop: 103.26.68.56
BGP.med: 0
BGP.local_pref: 106
BGP.community: (58941,0)
unreachable [lax_ocr_0 07:39:26 from
10.3.14.1] (100/-) [AS15169i]
Type: BGP unicast univ
BGP.origin: IGP
BGP.as_path: 15169
BGP.next_hop: 206.72.210.41
BGP.med: 0
BGP.local_pref: 108
BGP.community: (19996,19996)
unreachable [jfk_ocr_0 07:39:21 from
10.4.15.1] (100/-) [AS15169i]
Type: BGP unicast univ
BGP.origin: IGP
BGP.as_path: 174 15169
BGP.next_hop: 38.104.75.221
BGP.med: 10040
BGP.local_pref: 100
BGP.community: (174,21000) (174,22013)
Current config, the macros have been removed for obvious reasons.
log "/var/log/bird.log" all;
router id r_id;
protocol device { }
template bgp peers {
local as myas;
multihop;
import all;
export none;
}
protocol bgp syd_ocr_0 from peers
{
description "Sydney Open Core 0";
neighbor syd_ocr_0_ip as peeras;
password syd_ocr_0_password;
}
protocol bgp lax_ocr_0 from peers
{
description "Los Angeles Open Core 0";
neighbor lax_ocr_0_ip as peeras;
password lax_ocr_0_password;
}
protocol bgp jfk_ocr_0 from peers
{
description "New York Open Core 0";
neighbor jfk_ocr_0_ip as peeras;
password jfk_ocr_0_password;
}
protocol bgp dfw_ocr_0 from peers
{
description "Dallas Open Core 0";
neighbor dfw_ocr_0_ip as peeras;
password dfw_ocr_0_password;
}
