August 2010 - Bird-users

how to confirm which capabilities have been negotiated
by Eiichiro Watanabe 24 Oct '11

24 Oct '11

Hello, Do we have an appropriate command to show which BGP capabilities have been negotiated on bird after a peer has been established? Of course, I known I can recognize when I look into packets captured, or confirm it on the neighbor router by using "show ip bgp neighbor x.x.x.x" command (in the case of CiscoIOS). it wouldn't be smart. Thanks, eiichiro -- ################################################### Eiichiro Watanabe Internet Multifeed Co.

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BIRD at MSK-IX
by Mikhail A. Grishin 27 May '11

27 May '11

Hi, We successfully finished the process of adaptation BIRD to MSK-IX network. Currently BIRD is running on both IPv4 Route Servers (version 1.2.0 with some patches from Ondrej Zajicek). Also we modified our public Looking Glass service. It's available via: http://www.msk-ix.ru/eng/lookingglass.html Thank you for help and cooperation! -- Mikhail A. Grishin E-mail: magr(a)ripn.net

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Memory seems to grow endless
by Stéphane Bunel 03 Sep '10

03 Sep '10

Hi there, I'm working on a use case with two routers (foundry) emiting RIPv2 messages in multicast over an ethernet link and one Ubuntu/Linux/64 server with BIRD configured as a quiet RIP listener. Configuration is simple and working well. But as you can see below, BIRD seems to eat memory after each message it receive (+4K after receiving 2*3 RIP paquets). Memory used by BIRD seems to grow endless. I' cant say if it's a bug but it sound like. On the mailing list, i've found a thread of three messages speaking about things between libc and kernel. But I'm not sure this is related. Do you have notice this behavior and do you have find a solution ? Regards, Stephane. at 11h44: root@srtools:~# /etc/init.d/bird start root@srtools:~# birdc BIRD 1.2.4 ready. bird> show memory BIRD memory usage Routing tables: 25 kB Route attributes: 4592 B Protocols: 26 kB Total: 81 kB at 12h15: bird> show memory BIRD memory usage Routing tables: 325 kB Route attributes: 4592 B Protocols: 34 kB Total: 390 kB at 12h54: bird> show memory BIRD memory usage Routing tables: 682 kB Route attributes: 4592 B Protocols: 34 kB Total: 747 kB at 14h01: bird> show memory BIRD memory usage Routing tables: 1311 kB Route attributes: 4592 B Protocols: 34 kB Total: 1376 kB Config. file /etc/bird.conf log "/var/log/bird.log" { error }; define NEED_MASQUERADE = 1; protocol kernel { learn; # Learn all alien routes from the kernel (ex: manualy inserted) persist; # Décommenter en production. Permet de ne pas flusher les routes export all; # Default is export none } protocol device { } protocol static { export all; } protocol direct { export all; } filter rip_select_gateway ip set wks; { wks = [ 172.19.127.252, 172.19.127.253 ]; if !(from ~ wks) then reject " !REJECT! Talker ", from, " is not in the WELL_KNOWN_SOURCES"; if net ~ [ 0.0.0.0/0 ] then { if NEED_MASQUERADE != 0 then { if rip_metric = 14 then accept " ACCEPTING MASQUERADE GW"; else reject " REJECTING NON-MASQUERADE GW"; } else { if rip_metric = 14 then reject " REJECTING MASQUERADE GW"; else accept " ACCEPTING NON-MASQUERADE GW"; } } else accept; } protocol rip { description "Listen only RIPv2 routes"; export none; import filter rip_select_gateway; interface "eth0" { mode quiet; }; }

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BIRD BGP community?
by Maciej Drobniuch 31 Aug '10

31 Aug '10

Could you tell me where I can find documentation about how to prepend bgp traffic, examples and other useful stuff to get familiar with the BIRD environment ? -- Pozdrawiam! Maciej Drobniuch

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Re: Weird behavior under FreeBSD
by Jiří Kubíček 24 Aug '10

24 Aug '10

Hello. >>> Load of the machine jumps to 2.00 and birdc respond's very slowly. It takes minutes to "display protocols" and it becomes worse and worse. >> The CPU was 100% busy? In kernel or in userspace (BIRD)? (see 'top') > > I still had top output in history: > > last pid: 76966; load averages: 2.00, 2.00, 2.00 up 3+09:57:45 12:01:27 > 64 processes: 2 running, 62 sleeping > CPU: 0.0% user, 0.0% nice, 25.2% system, 0.0% interrupt, 74.8% idle > Mem: 77M Active, 56M Inact, 366M Wired, 292K Cache, 418M Buf, 3445M Free > Swap: 4096M Total, 4096M Free FYI under normal conditions top looks like: last pid: 2033; load averages: 0.00, 0.00, 0.00 up 0+02:39:36 12:23:06 27 processes: 1 running, 26 sleeping CPU: 0.0% user, 0.0% nice, 0.1% system, 0.1% interrupt, 99.8% idle Mem: 169M Active, 30M Inact, 310M Wired, 24K Cache, 149M Buf, 3443M Free Swap: 4096M Total, 4096M Free This computer has one quad-core CPU, to 25% systems meens 100% on 1 core IMHO. S pozdravem Jiri KUBICEK -- KRAXNET s.r.o. - www.kraxnet.cz Kamenicka 26, 170 00 Praha 7 ---

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Weird behavior under FreeBSD
by Jiří Kubíček 17 Aug '10

17 Aug '10

Hello, after few days of successful running bird under FreeBSD 8.1 it becomes weird. Load of the machine jumps to 2.00 and birdc respond's very slowly. It takes minutes to "display protocols" and it becomes worse and worse. Tried to upgrade from 1.2.3 to 1.2.4 and the same thing hapened today. Killing bird takes also a long time. After restarting the process the same behaviour can be observed. I have tried to disable protocols and found out that disabling kernel1 and restarting bird helped and birdc responded smoothly. After re-enabling kernel1 I have observed in log file that exporting to kernel1 is extremely slow (about 5 prefixes per second) and exporting 320k prefixes takes for ever (few seconds under normal conditions). The only workaround I have is rebooting the machine. I currenty run two bird routers peering each other and the same thing was observed on both of them today. One of them runs also bird6 and there was no problem observed. Is anyone running bird on FreeBSD without problems? Can someone give me any hints what do observe/debug if it happens again? Thank you Jiri KUBICEK -- KRAXNET s.r.o. - www.kraxnet.cz Kamenicka 26, 170 00 Praha 7 ---

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mask problem
by Jaroslav Jirásek 17 Aug '10

17 Aug '10

Hi, I have pc router with bird and mikrotik router, ospf routing is configured and working. On mikrotik router I have in log message with every received hello packet "mismatch in network mask - mine 255.255.255.252, remote 255.255.255.248" This messages appears when I have on pc router two IP adress on one interface - one is public 77.x.x.x/30, second is privat 172.16.0.1/29 .When I remove privat ip adress, then messages in mikrotik routers disappears. there is a part of bird.conf interface "vlan10" { cost 10; priority 1; authentication none; type nonbroadcast; strict nonbroadcast yes; neighbors { 77.x.x.x; }; poll 10; retransmit 5; transmit delay 1; hello 10; dead 40; wait 40; }; Thank you for hint

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"ip sla monitor" with bird ?
by Hervé COMMOWICK 13 Aug '10

13 Aug '10

Hello, I know this feature is highly cisco related, but i want to know if it can be planned for a future release or not ? For those who maybe doesn't know this kind of feature, i want to condition bgp advertisement or kernel route sync with an external check. By the way, i'm interested if someone have done similar mecanism with opensource software. Thanks ! -- Hervé COMMOWICK, EXOSEC (http://www.exosec.fr/) ZAC des Metz - 3 Rue du petit robinson - 78350 JOUY EN JOSAS Tel: +33 1 30 67 60 65 - Fax: +33 1 75 43 40 70 mailto:hcommowick@exosec.fr

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Re: bird not listening on "odd" interfaces?
by Ondrej Zajicek 13 Aug '10

13 Aug '10

On Thu, Aug 12, 2010 at 09:43:46AM -0700, Ask Bj?rn Hansen wrote: > > On Aug 12, 2010, at 9:42, Ondrej Zajicek wrote: > > >> Yes, certainly - config is at http://tmp.askask.com/2010/08/buh1-bird.conf - show interfaces below. > > > > The problem is that the peer 80.96.148.1 is not directly reachable by any > > iface. If it is the other end of venet0, you should set IP addresses > > accordingly. > > Yeah, I think OpenVZ isn't exposing how it actually is working > (because the PtP interface makes it work somehow). But even in that case kernel should know where to send packets for 80.96.148.1 . Perhaps there is some route to that address? What is your routing table? What is a traceroute to 80.96.148.1 from that host? If there is more hops you should set multihop option. > However: Shouldn't bird at least listen to port 179 anyway? Then I > could just run it in passive mode. If BIRD didn't found appropriate iface, it didn't started the BGP protocol. Even if it would listen to port 179 (for example, if there is another proper BGP protocol), it wouldn't accept session from that IP because it wouldn't know the iface. -- Elen sila lumenn' omentielvo Ondrej 'SanTiago' Zajicek (email: santiago(a)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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Re: bird not listening on "odd" interfaces?
by Ondrej Zajicek 12 Aug '10

12 Aug '10

On Thu, Aug 12, 2010 at 07:36:10AM -0700, Ask Bj?rn Hansen wrote: > > On Aug 12, 2010, at 1:42, Ondrej Zajicek wrote: > > > Could you send me your config file and an output of 'show interfaces' command? > > Yes, certainly - config is at http://tmp.askask.com/2010/08/buh1-bird.conf - show interfaces below. The problem is that the peer 80.96.148.1 is not directly reachable by any iface. If it is the other end of venet0, you should set IP addresses accordingly. -- Elen sila lumenn' omentielvo Ondrej 'SanTiago' Zajicek (email: santiago(a)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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