October 2014 - Bird-users

[PATCH] bird.init: Added a check_config function and call it prior of, start and reload
by Pavlos Parissis 06 Oct '14

06 Oct '14

Hi, This another patch for the init script which adds a check_config function and call it prior of, start and reload. It should be applied on top the other patch I sent on 2nd Sep. Cheers, Pavlos

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Netconf/YANG support
by Mathias Wolkert 06 Oct '14

06 Oct '14

Hello list Anyone besides me who would like to see Netconf/YANG support in BIRD? Any plans for that? /Tias

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[PATCH] bird.init: Run status, reload and stop only for enabled, versions of IP
by Pavlos Parissis 02 Oct '14

02 Oct '14

Hi, Here is my 1st patch for this project! Please let me know if it is rejected or accepted:-) Cheers, Pavlos

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prefix patterns cannot be defined as constants
by Kai 02 Oct '14

02 Oct '14

Hi there! Just noticed that (shorthand and long) prefix patterns cannot be defined as constants. During a quick search I couldn't find this behaviour documented, so maybe it might be considered a bug? Example: define my_const = fc01:2345::/48+; ... returns a syntax error. As does: define my_const = fc01:2345::/48{48,128}; Best regards, Kai

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check for the existence of a variable
by Pavlos Parissis 01 Oct '14

01 Oct '14

Hi, I want to be able to include a file which will normally have a constant but in some cases it may not have any content, but I still want to be able to restart/reload without problems. Here is a snippet: include "/etc/bird.d/anycast_prefixes.conf"; function anycast_advertise() { if defined(ACAST_PS_ADVERTISE) then return net ~ ACAST_PS_ADVERTISE; else { return false; } } The content of /etc/bird.d/anycast_prefixes.conf is define ACAST_PS_ADVERTISE = [ 192.168.200.1/32, # Frontend 1 192.168.200.2/32 # Frontend 2 ]; The defined function complains about missing variables. Is it possible to express what I want? Thanks, Pavlos

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Re: bgp router with multi asn's - neighbor config ?
by Kai 01 Oct '14

01 Oct '14

Hi Ondrej! Thanks for your hints. Please let me add a question! (see below) On Thu, 2014-09-04 at 16:32 +0200, Ondrej Zajicek wrote: > On Thu, Sep 04, 2014 at 12:32:46PM +0000, Leo Vandewoestijne wrote: > > > > > > You cannot have two BGP relations to a single peer. I see two options: > > > > > You will certainly have to do this on different IP's. > > And actually I only do it with different IP's in different netmasks. > > Yes, you can have two BGP sessions between two BGP neighbors if you use > two pairs of IP addresses, IMHO it should work even if all addresses have > the same netmask. I now tried a setup with a peer (only one IP address) and a router on my side which has two IP addresses configured on the same interface (primary and secondary). The schema of config on my side would look like this: interface tun0: 10.0.0.1 (primary) 10.0.0.2 (secondary) protocol bgp me_1 {6 local 10.0.0.1 as 1; router id 10.0.0.1; neighbor 10.0.0.9 as 9; direct; } protocol bgp me_2 {6 local 10.0.0.2 as 2; router id 10.0.0.2; neighbor 10.0.0.9 as 9; direct; } (In fact there are a lot of peers like this one.) This setup doesn't seem to work. It seems as if, with each restart, only on of the two connections comes online, not always the same one. The second connection is rejected when incoming. Which is the mistake I made here? Or does the peer have to have two IP addresses as well? The bird user manual states "Note that contrary to other IP routers, BIRD is able to act as a router located in multiple AS’es simultaneously". What is the intended way to configure this situation? Best regards and many thanks, Kai -- "Das ist Demokratie, wenn man sich aussuchen darf, wer einen verarscht." (Hagen Rether) D-65203 Wiesi fast: kai_pf (aT] web(dot)de ++ PGP Key fingerprint B567 C43E 99D1 7709 7D64 3BF8 2DE8 1092 0EEF D58E ++ -----BEGIN GEEK CODE BLOCK----- VERSION: 3.12 GCS/IT/CM d- s:- a+>-----(?) C++$ UL++(++++$) P+++ L++ E-(+) W--(+) N !w---($) !O !M V? PS+ PE-() Y+ PGP(+) t R*@ tv--@ b+>++ DI++ G e+++(*) h? y? ------END GEEK CODE BLOCK------

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Non-default BGP port
by Matthias Waehlisch 01 Oct '14

01 Oct '14

Hi, do I see it correctly that the destination port to establish the BGP session cannot be changed? I would really like to have something like neighbor 1.2.3.4 port 5001 as 64512; Any reason not to support this? Thanks matthias -- Matthias Waehlisch . Freie Universitaet Berlin, Inst. fuer Informatik, AG CST . Takustr. 9, D-14195 Berlin, Germany .. mailto:waehlisch@ieee.org .. http://www.inf.fu-berlin.de/~waehl :. Also: http://inet.cpt.haw-hamburg.de .. http://www.link-lab.net

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