October 2014 - Bird-users

New in BIRD
by Ilias Pallikarakis 23 Aug '16

23 Aug '16

Hi, I recently started trying to learn BIRD. I should also mention I have no previous experience with any other Routing daemon either. I want to configure a bgp monitor for both ipv4 and ipv6. I am running BIRD in a Ubuntu 13.10 VM. I managed to install both bird and bird6 but I have some problems with the configurations. In ipv4 : I created a very simple configuration which I attach. The conf is compiled but in birdc the bgp session is considered idle. I tried to do a tcpdump and found that the router sends a TCP SYN on the VM's bgp port but the VM responds with a RST and never tries to set a BGP session itself. In ipv6 : No matter the configuration (my configuration or the sample coming with bird6 or examples found on the web) the configuration is not compiled giving the following error : BIRD ipv6 doesn't run (bird: /usr/local/etc/bird6.conf, line 1: Router ID must be configured manually on IPv6 routers) Could anyone give me some pointers on what I am doing wrong ? Thank you for your help, Ilias Pallikarakis

5 8

IS-IS
by kveri new 01 Jun '15

01 Jun '15

Hello, I would like to implement IS-IS as a part of my master thesis. Are there any apparent problems which would prevent successful implementation, political and/or technical? Also I would like to hear opinions of the authors. Implementation timeframe is 2013 (if we live past 21th). Regards, Martin Čechvala Faculty of Informatics and Information Technologies Slovak Technical University

7 8

OSPF route selection
by Thomas Goldberg 22 May '15

22 May '15

Hello, we're using OSPF for anycast routing and came across a small problem. We've a BIRD v1.4.4 router which sits in area 0 and 16. Here's the relevant state information (10.236.144.144/32 is announced from two different routers in two areas): area 0.0.0.0 router 10.236.144.241 distance 33 external 10.236.144.144/32 metric 1 area 0.0.0.16 router 10.17.224.253 distance 111 external 10.236.144.144/32 metric 1 The route via area 16 is considered best: 10.236.144.144/32 via 10.176.3.29 on vlan542 [o_internal 2014-10-07 16:49:56] * E1 (150/112) [10.17.224.253] Given that both E1 routes are reachable via intra-area paths. We're wondering why the path via area 16 (higher costs than area 0) is chosen. Is this the intended behavior? Is there any way to make bird prefer routes via a specific/backbone area in a situation like this? Best Regards, Freddy

4 4

Mailing list transfer
by Ondrej Filip 25 Oct '14

25 Oct '14

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Dear BIRD users, this mailing list will be transferred to a new server (trubka.network.cz) in a few minutes. Please keep using the e-mail address bird-users(a)network.cz And please let me know if this causes any problems. Ondrej -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJUS3y7AAoJED82D4RIDoWPSm8QALd1BQbVDpaUF5G2B0gHZEK4 BWmVhcEML0374Dbe/fX0/CIgg/l/Eyyty1vnDVt4sF9nw8ixi6X05TrB8+i8u2Hp nPJjFCwWatnZogd+yCP9Con6fHWGS4W1Zwv49b8dw/Ps91zaj2EQpCEoS4oTLYif w0KCaSlodFKF4/47T27NPGk/MyrS7jLNUSOSuU5C+x6te/NUY6Cda1k7ms7YGW4O ubCxx9c0U8ZslXeVMB1kRvlynF2OA8Hv1cwW8hM+IxBgwrWrWZC4hUeAhuTQgWo6 3Uth+3WmQh1xFcOfUfClbRBaiXzAgMSuKQO+xmUG6gpa0obhqRjJmG6NXMi6PEYs /sSfdB4Hh2y/2rIOdlf5bETGppmxYjiutsizmTs5TeMNtqC6qzPzyNp+cspCh1ax LRhcWUxaaldxt/49Ggoo+2FuRlsFsKeJq5tDIZY6WT4mNe0UYlstsbJ5EzL5gPEU /YNZjw14PUDBl6FmZ+wQnh806bP/YA+ndqWJaMOROg3J5oj2K307BTBAhkaWtaMk EMv2Gd8tXagx5aWGZhN0XrZdt/FjzdVQXcxRFNeruEtGmdiCL6OZCIhcWZPJahNS xmXfRhtE2WqGNmGWIVCqVjwuKJMbeIquJqI8DoAu62nhWt3KyVPFatZAUbkE45RS H04h7OdcolOrEJhNaqsk =7NbV -----END PGP SIGNATURE-----

3 3

Mailing list test
by Gustavo Ponza 25 Oct '14

25 Oct '14

test.... gus i0ojj _______________________________________________ Bird-users mailing list Bird-users(a)trubka.network.cz http://trubka.network.cz/mailman/listinfo/bird-users

1 0

Another Netlink: File exists
by micah 24 Oct '14

24 Oct '14

Hello, I read the FAQ on the wiki, and every thread I could find on this list to try and track down how to stop this message hitting my logs every 15 seconds (and filling them every few days), but I have had no luck. I'm just doing bgp, no OSPF, my kernel protocol already is in 'learn' mode, so I set the preference to 100000, but that didn't change anything. I tried 'debug all;' and 'debug {routes};' in the kernel protocol, but ended up only really getting anything from doing: echo all debug all all which then showed me: >>> kernel1: Scanning routing table >>> kernel1: 0.0.0.0/0: [alien] seen >>> kernel1: 1.0.0.0/24: seen >>> kernel1: 1.0.4.0/24: seen ... >>> Netlink: File exists >>> Netlink: File exists >>> Netlink: File exists bird> show route 0.0.0.0/0 0.0.0.0/0 via 208.99.192.141 on eth3 [kernel1 08:44:51] * (10000) I am adding that in my system's startup script, not via bird. Also, that route should be filtered out, as I have the following filters: function martians() { return net ~ [ 169.254.0.0/16+, 192.168.0.0/16+, 10.0.0.0/8+, 172.24.0.0/13+, 172.25.0.0/16+, 172.26.0.0/16+, 172.27.0.0/16+, 172.28.0.0/16+, 172.29.0.0/16+, 172.30.0.0/16+, 172.31.0.0/16+, 224.0.0.0/4+, 240.0.0.0/4+, 0.0.0.0/32-, 0.0.0.0/0{25,32}, 0.0.0.0/0{0,7}, 127.0.0.0/8+ ]; function rt_import_all(int asn) { if martians() || local_network() then return false; if bgp_path.first != asn then return false; if bgp_path.len > 64 then return false; # not sure this works with multi-hop, so disabling # if bgp_next_hop != from then return false; return true; } filter bgp_in_cogent { if ! rt_import_all(174) then reject; accept; } filter bgp_in_swiftco { if ! rt_import_all(25700) then reject; accept; } I tried to run bird -d to get some debugging output, but it didn't provide me with any (i'm using debian version 1.4.4-1~bpo70+1). Finally, is there a way to use a more useful pager with birdc? If I do 'show routes' I cannot search with the existing pager, or do other interesting things, like I can with 'less'. Thanks for your help! micah

4 5

Prefix for BIRD maillist emails
by Fernando Frediani 23 Oct '14

23 Oct '14

Hi chaps, Just an small cosmetic detail to whoever is responsible for the mail list. Perhaps would be nice to have on every email subject sent by the Maillist system the Prefix [BIRD] or [BIRD-Users] to identify more clearly the incoming emails. Would it be possible to consider it ? Thanks Fernando

7 10

Way to use Bird as route server
by Osmos 23 Oct '14

23 Oct '14

Hi there, just doing some tests with Bird as route server, but the result was not the desired. Other staff like RTBH is running fine. The situation is that next-hop is not modified (used only RS CLIENT option). All are eBGP sessions. Checked some examples around and found no way to deploy correctly. Any advise or template to achieve this function? Thanks in advance. Regards, Jorge.

4 7

rfc5185 - Multiarea Adjacency
by Eugene M. Zheganin 23 Oct '14

23 Oct '14

Hi. Does bird support the RFC 5185 ? I need to use it with a JunOS device. Seems like in Junos there's a problem with situation when two routers have more than one neighborship over some links that are in different areas (the usual workaround for this). Thanks.

1 1

Feature request: static routes to not directly connected gateways
by Alexander Demenshin 23 Oct '14

23 Oct '14

Hi, It would be nice to be able to use "indirect" gateways, i.e. which are routed via interface but are not part of interface networks, like this: protocol static { route 10.1.1.0/24 via "eth0"; route 10.2.1.0/24 via 10.1.1.1; } Linux supports this, so it would be really useful and opens interesting opportunities, like automatically adding routes once specified gateway becomes reachable after adding an interface-bound route (either outside or inside of Bird). One possible application (from my actual configuration) is routing of specific networks through VPN gateway - the gateway itself is in /30 transfer network (and this could not be changed easily) so I could not make it reachable directly on more than one Bird router simultaneously. Please consider this for next release :) Thank you! -- With best regards, Alexander.

2 2