February 2010 - Bird-users

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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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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New release 1.2.0
by Ondrej Filip 26 Feb '10

26 Feb '10

Hi! New version is ready. Santiago made a great job in bugfixing my very old code. And he added OSPFv3. :-) Version 1.2.0 (2010-01-05) o Implements OSPFv3 (IPv6 support for OSPF). Because the code is shared with OSPFv2 and there were deep changes in it, we suggest caution during upgrade to OSPF users. Some advanced features (like NSSA, vlinks and authentication) are not yet implemented. o Implements MRTdump - binary logging protocol compatible with other routing daemons. Only BGP part of MRTdump is yet implemented. o Changes default value of BGP attribute LOCAL_PREF from 0 to 100. Use 'default bgp_local_pref 0' BGP protocol option for the old behavior. The new value is suggested by RFC 4277. o Changes default mode of pipes from opaque to transparent. Use 'mode opaque' protocol option if the old behavior is needed. Opaque pipe mode is deprecated and might be removed in the future. All distro packages will follow soon. Ondrej

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New release 1.2.1
by Ondrej Filip 10 Feb '10

10 Feb '10

Hi! New version is ready. Some minor features added and a few bugs fixed. Version 1.2.1 (2010-02-11) o Option 'interpret communities' allows to override implicit handling of well-known communities. o 'configure' command uses route reload when filters change. o Adds router ID of advertising router as OSPF route attribute. o 'show route' command indicates primary route and shows OSPF Router ID. o Configurable date/time formats. o Symbol names can be enclosed by '' and so include hyphen and start with number. o Several minor bugfixes. All distro packages will follow soon. Ondrej

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Netlink: File exists
by Chris Webb 08 Feb '10

08 Feb '10

Hi. I'm experimenting with bird as a replacement for a quagga install, and tried the following very simple config: router id 91.203.57.1; protocol device { } protocol direct { } protocol kernel { import all; export all; } protocol bgp { local as 44934; neighbor 84.45.39.149 as 25577; import all; export all; } with bird-1.2.0 running on a (relatively old) linux 2.6.23.9 kernel. This seems to work fine, apart from the message "bird: Netlink: File exists" appearing in syslog every minute. My routing table before starting bird looks like this # ip route show 84.45.39.148/30 dev eth1 proto kernel scope link src 84.45.39.150 91.203.56.0/23 dev eth0 proto kernel scope link src 91.203.57.1 default via 84.45.39.149 dev eth1 in case this is related to bird being unable to overwrite the existing static routes? Also, I needed sysctl net.core.rmem_max=524284 before starting quagga to avoid netlink "recvmsg overrun" messages and occasional loss of prefixes. Am I right in assuming that bird will need the same thing for the same reason? Cheers, Chris.

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Bird and memory consumption
by Mikhail A. Grishin 02 Feb '10

02 Feb '10

Hi, How much memory the BIRD can eat? At startup (29Feb) it about 450Megs. Today: PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND 2385 root 1 44 0 843M 843M select 2 26:42 0.78% bird The "configure" command is applied one time per day. -- Mikhail A. Grishin E-mail: magr(a)ripn.net

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Re: [Euro-ix-rs-vwg] New release 1.2.0
by Ondrej Zajicek 01 Feb '10

01 Feb '10

On Mon, Jan 25, 2010 at 07:12:50PM +0300, Mikhail A. Grishin wrote: > Ondrej Zajicek ?????: >> On Mon, Jan 25, 2010 at 03:15:14PM +0300, Mikhail A. Grishin wrote: >>> Yes, we had some filters on pipes for every client. >>> Upon your explanation, we transfered filters from pipes to the >>> "protocol bgp" section of the config. >>> >>> Now "show protocols all" output shows all needed information. >> >> Just a note that moving filters from pipes to bgp protocols have several >> other consequences, some positive, some negative: >> >> 1) You see just what is accepted and you cannot directly see rejected routes >> (but they can be seen in log, if enabled). > > Yes, we planned for that case temporary transfer filters back to pipes > for some peer... But if it could be done by logs, may be you can show an > example? You can use 'debug { filters }' in a bgp protocol section and it will log all routes in filters of that bgp protocol. > Very valuable info for us! > In general, we want to minimize causes of restarting BGP sessions with > our clients. > Is this task (new behavior of 'configure' command) have a good priority > for developers? Other IXes that use BIRD use (AFAIK) 'configure soft' and 'reload' approach, so it was not a big demand for this change yet. But it should not be hard to do that change and i would like to have this change soon. > One more question, about routes with "no-export" community == > ((65535,65281)) > > We need to transparently advertise such routes through RS to RS clients. > > We try to transparently advertise, these routes seen in 'show routes > all', and in 'show routes all table Tanother_peer', but peer > 'another_peer' doesn't receive routes with community (65535,65281). Handling of no-export community is hardcoded in BIRD, so such routes are not exported to the external neighbors, as it is expected. I can send you a patch that causes BIRD to ignore well-known communities (and leaves such behavior to configured filters) and we will make this behavior configurable in the next version. -- 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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