May 2016 - Bird-users - Mailing Lists

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

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Getting details about LSAs
by Israel G. Lugo 01 Aug '16

01 Aug '16

Hello, Is there a way to obtain more information about LSAs? I've been debugging an issue with a hardware router. I know I can do this: bird> show ospf lsadb lsid 10.16.80.0 Global Type LS ID Router Sequence Age Checksum 0005 10.16.80.0 192.168.253.6 800012e8 1193 e030 0005 10.16.80.0 193.136.152.3 8000042a 1464 0a6f But I'd like to see things such as the Forwarding Address in AS-external-LSAs, the Options field, and so on. Would this be possible to do? Perhaps adding an "all" option to the show ospf lsadb command. I think it would prove valuable for troubleshooting those weird cases. Regards, -- Israel G. Lugo Núcleo de Redes e Comunicações Direção de Serviços de Informática Instituto Superior Técnico

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[PATCH] Gate boolean protocol options on filename.
by João Taveira Araújo 29 Jul '16

29 Jul '16

Toggling session parameters currently requires editing the configuration file and reloading BIRD. Doing so programatically requires keeping up with the syntax and layout of a particular configuration. This commit introduces an alternative method for gating configuration of boolean protocol properties. In addition to the keywords on/off and yes/no, a user can instead provide a filename on which to predicate whether the flag is set. In particular, this makes toggling protocols programatically much simpler, since we can decouple state from configuration more cleanly, i.e: protocol kernel { disabled filename "/etc/disable-kernel"; } --- conf/cf-lex.l | 23 +++++++++++++++++++++++ conf/conf.h | 1 + conf/confbase.Y | 3 ++- doc/bird.sgml | 5 +++-- 4 files changed, 29 insertions(+), 3 deletions(-) diff --git a/conf/cf-lex.l b/conf/cf-lex.l index 5a2a4d6..af85291 100644 --- a/conf/cf-lex.l +++ b/conf/cf-lex.l @@ -693,6 +693,29 @@ cf_symbol_class_name(struct symbol *sym) } } +/** + * cf_file_exists - check if expanded filename exists + * @arg: filename + * + * This function expands relative filenames and returns + * whether file is present. + */ +int +cf_file_exists(char *arg) +{ + char *patt = arg; + + if (*arg != '/') + { + int dlen = strlen(ifs->file_name); + char *dir = alloca(dlen + 1); + patt = alloca(dlen + strlen(arg) + 2); + memcpy(dir, ifs->file_name, dlen + 1); + sprintf(patt, "%s/%s", dirname(dir), arg); + } + + return access(patt, F_OK) != -1; +} /** * DOC: Parser diff --git a/conf/conf.h b/conf/conf.h index 89a2c5b..6f6a33d 100644 --- a/conf/conf.h +++ b/conf/conf.h @@ -160,6 +160,7 @@ char *cf_symbol_class_name(struct symbol *sym); static inline int cf_symbol_is_constant(struct symbol *sym) { return (sym->class & 0xff00) == SYM_CONSTANT; } +int cf_file_exists(char *arg); /* Parser */ diff --git a/conf/confbase.Y b/conf/confbase.Y index 5f487c1..7ee26f3 100644 --- a/conf/confbase.Y +++ b/conf/confbase.Y @@ -88,7 +88,7 @@ CF_DECLS %left '!' %nonassoc '.' -CF_KEYWORDS(DEFINE, ON, OFF, YES, NO, S, MS, US, PORT) +CF_KEYWORDS(DEFINE, ON, OFF, YES, NO, S, MS, US, PORT, FILENAME) CF_GRAMMAR @@ -143,6 +143,7 @@ bool: | YES { $$ = 1; } | OFF { $$ = 0; } | NO { $$ = 0; } + | FILENAME text { $$ = cf_file_exists($2); } | /* Silence means agreement */ { $$ = 1; } ; diff --git a/doc/bird.sgml b/doc/bird.sgml index a0b45f4..03682cb 100644 --- a/doc/bird.sgml +++ b/doc/bird.sgml @@ -493,8 +493,9 @@ protocol (see sections talking about the protocols). <p>Several options use a <m/switch/ argument. It can be either <cf/on/, <cf/yes/ or a numeric expression with a non-zero value for the option to be enabled or <cf/off/, <cf/no/ or a numeric expression evaluating to zero to -disable it. An empty <m/switch/ is equivalent to <cf/on/ ("silence means -agreement"). +disable it. Alternatively you can gate the value of <m/switch/ on the presence +of a file through the <cf/filename/ "<m/name/" directive. An empty <m/switch/ +is equivalent to <cf/on/ ("silence means agreement"). <descrip> <tag>preference <m/expr/</tag> -- 2.8.1

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[PATCH 0/7] Babel: Fixes for version 1.6.0
by Toke Høiland-Jørgensen 20 Jul '16

20 Jul '16

This patch series fixes a series of small-ish issues uncovered during testing of the 1.6.0 release of Bird. Thanks to Baptiste Jonglez for reporting most of them. Toke Høiland-Jørgensen (7): Babel: Make sure intervals don't overflow. Babel: Immediately send a hello on interface reconfigure. Babel: Rework handling of retractions. Babel: Documentation updates. Babel: Send wildcard retractions on shutdown and startup. Babel: Don't keep an infeasible route as selected. Babel: Don't maintain feasibility distance for our own routes. doc/bird.sgml | 33 ++++++++++-- nest/config.Y | 2 +- nest/rt-attr.c | 2 +- proto/babel/babel.c | 144 +++++++++++++++++++++++++++++++++++++------------- proto/babel/babel.h | 3 ++ proto/babel/config.Y | 9 ++-- proto/babel/packets.c | 42 +++++++++++---- 7 files changed, 179 insertions(+), 56 deletions(-) -- 2.8.0

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[PATCH 2/7] Babel: Immediately send a hello on interface reconfigure.
by Toke Høiland-Jørgensen 19 Jul '16

19 Jul '16

An interface reconfiguration may change the hello interval. Section 3.4.1 of the RFC specifies that either the change shouldn't be applied until the next hello is due, or an additional hello should be sent immediately. This does the latter. Signed-off-by: Toke Høiland-Jørgensen <toke(a)toke.dk> --- proto/babel/babel.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/proto/babel/babel.c b/proto/babel/babel.c index 8e104d6..4b28f69 100644 --- a/proto/babel/babel.c +++ b/proto/babel/babel.c @@ -1539,7 +1539,10 @@ babel_reconfigure_iface(struct babel_proto *p, struct babel_iface *ifa, struct b babel_iface_update_state(ifa); if (ifa->up) + { + babel_send_hello(ifa, 0); babel_iface_kick_timer(ifa); + } return 1; } -- 2.8.0

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Re: RIP with MD5 authentication
by Alexander Velkov 29 Jun '16

29 Jun '16

ok great, thank you for your answer! On Thu, Nov 12, 2015 at 7:01 PM, Ondrej Zajicek <santiago(a)crfreenet.org> wrote: > On Thu, Nov 12, 2015 at 05:25:18PM +0100, Alexander Velkov wrote: > > Hi Ondrej, > > > > thank you for your reply! > > > > When is this branch planned to be integrated to main? > > I guess we will release a new version of BIRD containing RIP from rip-new > branch during 2015-12 or 2016-01. > > -- > 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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routing using kernel fibs
by Angel 04 Jun '16

04 Jun '16

Hello, We are configuring a BSDRP server (FreeBSD router.bsdrp.net 10.3-RELEASE-p2 FreeBSD 10.3-RELEASE-p2 #0 r299108M). We have two fullrouting bgp carriers, some bgp members and some ospf members. To isolate OSPF members we want to use kernel fibs. But we do not understand how it works. What we need is a diferent table for each ospf member, so for example ospf1member will use carrier1 routes, and ospf2member will use carrier2 routes. Which is the best way to get this? If we configure kernel fib 1 with carrier1 routes, but ospf1 doesn't use it, how we can to configure because ospf1 use kernel fib 1? How to do the same for ospf2 with kernel fib 2? We have to configure interfaces in these fibs? What about carriers interface? Could you give us some example to get above configuration? Regards, Angel.

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Version 1.6.0
by Ondrej Filip 31 May '16

31 May '16

Dear Bird users, the long expected version is out: Version 1.6.0 (2016-04-29) o Major RIP protocol redesign o New Babel routing protocol o BGP multipath support o KRT: Add support for plenty of kernel route metrics o KRT: Allow more than 256 routing tables o Static: Allow to specify attributes for static routes o Static: Support for BFD controlled static routes o FreeBSD: Setup password for BGP MD5 authentication o IO: Remove socket number limit o Plenty of bug fixes Upgrade notes: For RIP, most protocol options were moved to interface blocks. Enjoy! Ondrej

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Bird very slow and not importing all routes
by noc＠dolphin-it.de 30 May '16

30 May '16

Hi, I set up bird and bird6 to replace my quagga-setup. I get full-tables for IPv4 and IPv6 but bird fails to import most of them. Example: Quagga needs a maximum of 10 seconds to import 500k routes into main table where bird needs 20 minutes to reach this state: bgp_peer1 BGP master up 19:07:10 Established Preference: 100 Input filter: ACCEPT Output filter: (unnamed) Routes: 226754 imported, 1 exported, 226754 preferred Route change stats: received rejected filtered ignored accepted Import updates: 226754 0 0 0 226754 Import withdraws: 0 0 --- 0 0 Export updates: 226755 226754 0 --- 1 Export withdraws: 0 --- --- --- 0 BGP state: Established Neighbor address: X Neighbor AS: X Neighbor ID: X Neighbor caps: refresh restart-aware AS4 Session: external AS4 Source address: X Hold timer: 72/90 Keepalive timer: 10/30 My config (AS and Net anonymized): # Set local AS define myas=13456; protocol device { scan time 10; } protocol kernel { import all; export all; persist; scan time 15; } protocol static static_bgp { import all; # My net - Set prefixes to be announced (anonymized) route 1.1.1.0/24 reject; } protocol bgp bgp_peer1 { import all; export where proto = "static_bgp"; interpret communities no; missing lladdr ignore; local as myas; neighbor 8.8.8.8 as 1234; password "xxxxxxxxxxxx"; } ------------------ I don't see what is going wrong. Also I don't get why routes are re-exported to bgp_peer1 while "static_bgp" only lists one network. Any ideas? Thanks, Kevin

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Re: Help on customizing BIRD- getting community value
by Martin Mares 26 May '16

26 May '16

Hello! > I am a PhD student at Roma Tre University of Rome, Italy and I am > working on implementation of route server at IXP with BIRD. I want > to have access to community values inside BIRD which are sent by > ASes. Based on received community values I want to customize BIRD > code. > > I found that inside attrs.c file I should decode the data to get > community value, but I do not know how. With sniffing incoming > packets I can see the community values, but not inside BIRD. > > I was wondering may I ask you to help about this. I do not maintain BIRD any longer, but I am forwarding your mail to the bird-users mailing list. Have a nice fortnight -- Martin `MJ' Mares <mj(a)ucw.cz> http://mj.ucw.cz/ Faculty of Math and Physics, Charles University, Prague, Czech Rep., Earth Quote of the day: '

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