December 2017 - Bird-users

Adding more then one bgp community at once
by Борис Коваленко 05 May '23

05 May '23

Hello! Is this possible to add many communites at once? bgp_community.add([(1,1), (1,2)]) is wrong "Setting clist attribute to non-clist value" Regards, Boris -- С уважением, Борис Коваленко

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manipulating the best path, eBGP, MED?
by Thomas＠PhaseHosting 14 Apr '18

14 Apr '18

Supp, I implemented bird in our Private cloud running proxmox to distribute our public address with eBGP to our serverhost. Through iBGP and a ucarp interface i have a HA gateway, the problem is that our host receives the routes but there are multiple entry points to our subnet ( the proxmox hosts). This makes that a diffrent in & out route doenst work. through following link: https://supportforums.cisco.com/document/126691/understanding-bgp-best-path… I learned that my hosts selects its route based on age ( the bird with the first connection is chosen). Can i send a multi-exit discriminator with my eBGP connection to my host? I googled but could find 2 answers that did't change anything: # your default gateway IP below here protocol bgp eBGP { import none; export where proto = "static_packet"; local as 65000; neighbor 10.80.x.x as 65530; password "SECRET"; #med metric 10; #default bgp_med 10; } (offcourse i tried both without # and waited till export) Or is there an other way to make sure that our host routes always to the first server and so on. -- Thomas Valgaeren thomas(a)phasehosting.io +32477915307

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Community for small IX
by Piotr Marciniak 23 Jan '18

23 Jan '18

Hello, We are running a small IX for around 20 members. A few months ago we moved on Bird and actually I am trying to add some standard communities to prepend or stop annoucing own prefixes to other members but can’t find examples on Bird docs nor by Google. All I found looks limited only to adding fixed community only. I think it is standard and may both work on filters for main table or via pipe import/export filters. But still – I can’t discover how to get and process (to block export) or announce (with prepend) received community. Could you please direct me (or send) some examples how to do this? Thank you, Peter

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Reacting to Link Failure
by Liam Kelly 28 Dec '17

28 Dec '17

Is there any way for other programs to listen for Bird events regarding Link Failure (IE: OSPF/BFD dead neighbor)? Bird is great, but the modems and device drivers I am working with are not. I can get some pretty odd ‘zombie’ states on network interfaces, and the BFD session going down is often the best indicator something bad happened. I was hoping to get that information from bird and take actions to fix it. -Liam Kelly

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BIRD v2.0.0-11-gc36a298 segmentation fault
by Mike Neo 27 Dec '17

27 Dec '17

Hi, using up arrow in birdc causes segmentation fault: [image: Obraz w treści 1] *syslog:* Dec 27 16:55:56 r1 kernel: [331700.979873] birdc[15259] segfault at 0 ip 00007fab7221ba0b sp 00007ffef0ee16c8 error 4 in libreadline.so.6.3[7fab721ed000+3d000] *environment:* Description: Ubuntu 16.04.3 LTS Release: 16.04 Codename: xenial *start cmd: *bird -f -u bird -g bird What's the problem? BR, Mike

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The newest version of bird 2.0.
by Mike Neo 27 Dec '17

27 Dec '17

Hi, please tell me where can I download the newest version of bird 2.0 with patch? BR

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The newest version.
by Mike Neo 25 Dec '17

25 Dec '17

Hi, please tell me where can I download the newest version of bird (2.0 with patch)? BR

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Re: Bird Installation Guide
by Pardeep Sharma 24 Dec '17

24 Dec '17

Hi Bird experts, First of all I would thank you for supporting me in installation of BIRD in linux. Now I am trying to acess bgp configuration and its verification after enable in bgp in "bird.conf". I am getting syntax error as attached. Please guide me what to do in order to get the acess of BGP in BIRD. Thanks On 16 December 2017 at 23:10, Pardeep Sharma <pardeep.sharma868(a)gmail.com> wrote: > Thanks Moyaza for helping me. Its started working.. but giving systax > error like bird> syntax error. > > Thanks a lot > > On 15 December 2017 at 16:00, Moyaze Shivji <moyaze(a)linx.net> wrote: > >> >> > On 15 Dec 2017, at 10:02, Pardeep Sharma <pardeep.sharma868(a)gmail.com> >> wrote: >> > >> > Hi Moyaze, >> > >> > Thanks for your best support here... >> > >> > Can u please guide us how to get BGP access in BIRD via HTTPs. I have >> just installed BIRD in Linux machine because rightnow I am able to see only >> bird.conf in /etc/bird.conf ini linux OS. Is there a way to access BIRD as >> similar to quagga server or normal router ? >> > >> >> To get access to the CLI do >> >> sudo birdc >> >> from there you can enter commands. >> >> This looking-glass may help in getting some kind of web access. >> >> https://gitlab.labs.nic.cz/labs/ulg/ >> >> There are other looking-glass’s . Just google for them. >> >> Mo > > > > > -- > Thanks & Regards > Pardeep > > -- Thanks & Regards Pardeep

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One BGP session flapping but not the other
by Alarig Le Lay 23 Dec '17

23 Dec '17

Hi, I have a pretty simple design: two edge routers, one hypevisor. The routing is done with the help of BGP. regis is the hypervisor. +---------+ +-------+ | nominoe | | budic | +---------+ +-------+ \ / \ / \ / AS204092 --------\-------/--------- \ / AS65000 +-------+ | regis | +-------+ The IPv4 session between nominoe and regis is flapping, but not the one with budic. The IPv6 sessions are stables. nominoe and budic are FreeBSD 11.1-RELEASE boxes, running bird 1.6.3 regis is a gentoo box running bird 1.6.3 too At each time the session is flapping, I can see 'bird: Kernel dropped some netlink messages, will resync on next scan.' in the logs of regis. What does that mean, and what part of the configuration is acting on it? The sessions are configured the same maner at the edge side: template bgp DOWNSTREAM { export all; import keep filtered; } protocol bgp bgp_alarig from DOWNSTREAM { local as 204092; description "BGP for alarig"; neighbor 89.234.186.100 as 65000; import keep filtered; import filter bgp_filter_customer_alarig_in; } And the same goes for the hypervisor: template bgp UPSTREAM { local as myasn; # Be able to see filtered routes with "sh route filtered" command import keep filtered; # Protect ourselves from massive routes leaks receive limit 700000 action block; # Announce only our IP allocations export where proto = "static_alarig_allocations"; export limit 1 action block; } protocol bgp bgp_nominoe from UPSTREAM { description "nominoe"; neighbor 89.234.186.7 as 204092; # Local address we use to establish the BGP session source address 89.234.186.100; # password='' # Accept all routes from Cogent except bogons and other bad stuff import filter bgp_filter_nominoe_in; } protocol bgp bgp_budic from UPSTREAM { description "nominoe"; neighbor 89.234.186.6 as 204092; # Local address we use to establish the BGP session source address 89.234.186.100; # password='' # Accept all routes from Cogent except bogons and other bad stuff import filter bgp_filter_budic_in; } I can paste the rest of the configuration if you think it’s relevant. Thanks, -- alarig

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Re: bug in bird6 1.6.2 and 1.6.3
by Ondrej Zajicek 23 Dec '17

23 Dec '17

On Fri, Dec 22, 2017 at 03:54:10PM +0300, Михаил Манерко wrote: > Hello. > > I'm using a bird6 1.6.3. > it runs ospfv3 and radv protocols on all interfaces of the system. Hello According to config, it runs OSPFv3 just on vlan7. Is that true? > Today I noticed that the launch of birdc6, causes segfault bird6. > A little research showed that if the number of vlan interfaces is less than 2024, then bird6 and birdc6 work without > errors, but if there are 2250 vlan interfaces in the system then the call of birdc6 results in a segfault bird6 Could you get a core dump? If you do not connect by birdc6, it works without problems and does not crash? -- 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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