November 2009 - Bird-users

BIRD in OpenWRT - patch
by Ondrej Zajicek 12 Apr '10

12 Apr '10

Hello Here is a patch for building BIRD in OpenWRT buildsystem. I hope it will be merged to OpenWRT soon. (package names are bird4, birdc4, bird6 and birdc6, not just bird). -- 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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[patch] kernel protocol learn on FreeBSD 7
by Eugene Perevyazko 02 Mar '10

02 Mar '10

Hello bird-users readers! I'm trying to use bird on PPP access-server running FreeBSD 7. The first problem I've met was bird not learning routes that are added and removed by ppp daemon based on Radius user-data. I've made a simple patch but not sure if it is full and correct. Can anyone review it? Especially I'm not sure what should be marked as KRT_SRC_REDIRECT and what are the consequences of not using this value. --- sysdep/bsd/krt-sock.c.old 2009-11-09 17:42:47.000000000 +0200 +++ sysdep/bsd/krt-sock.c 2009-11-09 17:48:58.000000000 +0200 @@ -269,6 +269,8 @@ int src; int flags = msg->rtm.rtm_flags; int addrs = msg->rtm.rtm_addrs; + pid_t sender_pid = msg->rtm.rtm_pid; + pid_t my_pid; int masklen = -1; if (!(flags & RTF_UP)) @@ -375,6 +377,12 @@ } src = KRT_SRC_UNKNOWN; /* FIXME */ + src = KRT_SRC_ALIEN; + my_pid = getpid(); + if (sender_pid == my_pid) + { + src = KRT_SRC_BIRD; + } e = rte_get_temp(&a); e->net = net; +++ sysdep/cf/bsd.h.old 2009-11-09 18:06:53.000000000 +0200 --- sysdep/cf/bsd.h 2009-11-09 17:38:21.000000000 +0200 @@ -7,7 +7,7 @@ */ #define CONFIG_AUTO_ROUTES -#undef CONFIG_SELF_CONSCIOUS +#define CONFIG_SELF_CONSCIOUS #undef CONFIG_MULTIPLE_TABLES #undef CONFIG_UNIX_IFACE -- Eugene Perevyazko

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bgp soft reconfiguration inbound
by Wolfgang Hennerbichler 16 Dec '09

16 Dec '09

Fellow Bird Users, I thought our bird installation was ready for prime-time as one thing caught my eye which I don't like at all, but hopefully you can help me out - we do bgp connections like this (only necessary stuff displayed): protocol bgp R1120x193_203_0_25 { local as myas; neighbor 193.203.0.25 as 1120; password "xyz"; import filter bgp_in_AS1120x193_203_0_25; export all; table T1120x193_203_0_25; rs client; start delay time 55; } filter bgp_in_AS1120x193_203_0_25 prefix set allnet; { # ... allnet = [ 193.171.255.32/27, 193.171.255.64/27, 192.92.125.0/24, 194.0.0.0/24 ]; if ! (net ~ allnet) then reject; accept; } Now I realized that if I changed the definition for 'allnet' and do a 'configure soft' these routes that are added or removed to 'allnet' are not rejected or added, because it seems that there is no bgp soft reconfiguration taking place (it works if I trigger a soft reconfiguration outbound on the peer router, or if I restart the protocol which causes bgp to flap). I know that nix.cz doesn't need this, as filtering is done in the pipe protocol, but we would really really like to filter at the very border, and if the filters change, I think a bgp soft reconfiguration inbound would be great. Is there a way to do a bgp soft reconfiguration, so that the routes are re-transmitted / re-calculated? Thanks for any help and have a nice weekend; Wolfgang -- www.vix.at | www.aco.net wh(a)univie.ac.at | WH844-RIPE Vienna University Computer Center

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Memory Usage of BIRD
by Wolfgang Hennerbichler 05 Dec '09

05 Dec '09

Hi Folks, I just made a little experiment: * let BIRD peer with a router that has Full Feed * letting BIRD eat Full Feed (and tweet) - memory footprint ~ 130 MB BTW (64 Bit Linux) * shutting the session down on the router-side * BIRD's memory consumption decreased to 128 MB, but was never freed again. So now I don't know if this is 'by design' (routes are marked dirty and overwritten on next usage) or a bug... Thanks for any replies; Wolfgang -- www.vix.at | www.aco.net wh(a)univie.ac.at | WH844-RIPE Vienna University Computer Center

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show inner statistics for bgp
by Martin Kraus 30 Nov '09

30 Nov '09

hello. is it possible to see the information about bgp sessions? accepted routes, sent routes etc? similar to what quagga does? thanks mk

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unequal cost load balancing?
by KORN Andras 26 Nov '09

26 Nov '09

Hi, we have a 5Mbps symmetric microwave uplink with one static IP and a /30 subnet. We're contemplating getting an additional ADSL connection to serve as backup. If the ISP cooperates, is there a way for me to load-balance and fail over between these two connections using BIRD? If so, how? (The DSL connection would obviously be asymmetric; the downstream direction would probably be a lot faster than 5Mbps, whereas the upstream direction would probably be somewhat slower.) Thanks! Andras -- Andras Korn <korn at elan.rulez.org> - <http://chardonnay.math.bme.hu/~korn/> It's best to be at the centre of things - then you get in everybody's way.

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filter position in config file.
by openbsd misc 26 Nov '09

26 Nov '09

I had a script generate some filters and add them to the very end of bird.conf (latest version 1.1.6) and if I do a birdc -> configure it complains no such filter. If move the filters above the bgp protocol section they are found ok. Are filters location specific in the config file ?

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state of ipv6
by Martin Kraus 23 Nov '09

23 Nov '09

Hi. I'd like to ask what is the state of ipv6 in bird. I know it doesn't support OSPFv3 but last time I tried, ipv6 RIP didn't work either. Has something changed or do I have to use a different routing daemon for ipv6? thanks mk

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Problem setting IPv6 next-hop in BGP
by S.H. Verbrugge 20 Nov '09

20 Nov '09

Hello, I'm new to this list, so please bear with me. I'm trying to set up a BGP route advertising server with BIRD, in order to update IPv6 static routes to a juniper router. My configuration is as follows (addresses omitted to avoid identification): ==START== log syslog { debug, trace, info, remote, warning, error, auth, fatal, bug }; log stderr all; router id <omitted>; debug protocols all; protocol device { scan time 10; # Scan interfaces every 10 seconds } protocol static { route <subnet>/64 via <gateway>; route <subnet>/64 via <gateway>; route <subnet>/64 via <gateway>; } protocol bgp { local as 64515; source address <own address>; rs client; export filter { if source = RTS_STATIC then { #bgp_next_hop = <gateway>; #gw = <gateway>; accept; } }; neighbor <omitted> as <omitted>; } ==END== I can see the correct routes being advertised, even with the correct 'via' in Debug traces, However, received routes are in the form of: <subnet>/64 via <bird source address>. I'm sure I haven't set next-hop self, so this behaviour seems strange to me. Could anyone please provide some insight into this? Cheers, -- /\/\ Hostingvereniging Soleus | Community-driven < ** > http://soleus.nu | Virtual Private Servers \/\/ Sen (IEF) Verbrugge (CT-Projectlead) | & more ...

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New release 1.1.6
by Ondrej Filip 20 Nov '09

20 Nov '09

Hello! New version is ready. This version includes some minor enhancements. Version 1.1.6 (2009-11-19) o Implements RFC 5004 - prefer older external routes. o There is a change how route servers handle missing IPv6 link local addresses in next hop atribute - see 'missing lladdr' option. o Several minor features (description field, parse check option). o Several minor bugfixes. All distro packages will follow soon. Ondrej

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