Avoiding routes being tagged as 'unreachable' when building a route-server / lg

[Madhuri]

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 <maduri111 at gmail.com> 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. <contact at winterei.se> 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 all
>> 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;
>> }
>>
>>
>>
>
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