- Bird-users - Mailing Lists

RIP over unnumbered links
by Gustavo Ponza 18 Jan '13

18 Jan '13

Hi developers, confirm again the very good work on BIRD 1.3.9 and we, amateur radio fellows, are very enthusiast for all implemented features :) Since I am receiving on my linux-box 'ir0rm-7.ampr.org' the RIP announces of the living ampr.org packet radio gateways by the main RIPv2 router operating at ucsd.edu (California), then activated the RIP on the BIRD to 'catch' and manage through my radio amateur 'pseudo-router' that gateway routing information but obtain the following log info: Jan 17 17:41:52 ir0rm-7 bird: rip1: rip is not defined over unnumbered links Is it actually possible to *define* the BIRD RIP to manage that stuff, and how? Or, if not, due to the RIP design: is it possible to have that feature implemented on the next BIRD release? Many thanks again for all gus

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New release 1.3.9
by Ondrej Filip 18 Jan '13

18 Jan '13

Hi Bird users, we have a new version of your popular routing daemon. The major improvement is related to filters. Many thanks to Santiago. Ondrej Version 1.3.9 (2013-01-11) o BIRD can be configured to keep and show filtered routes. o Separate receive and import limits. o Several new reconfiguration cmd options (undo, timeout, check). o Configurable automatic router ID selection. o Dragonfly BSD support. o Fixed OSPFv3 vlinks. o Several minor bugfixes

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Configuration Problem : announce default route via ospf
by Raphael Mazelier 17 Jan '13

17 Jan '13

Hello list, I'm a new user of bird. I'm using quagga or openospdf in production for time (also cisco and junos). Bird have an excellent reputation and a small footprint. I m trying to replace my old quagga on embedded box (running openwrt) with bird. The configuration look very flexible but I'm facing with a problem. What I try to make is announcing a default route in ospf, and also set some specific metric. I'm lost with that. The quagga/ospfd relevant part of configuration I try to make : - snip - interface lo2 ip ospf cost 100 router ospf ospf router-id 0.0.0.9 redistribute connected route-map connected_to_ospf passive-interface lo0 passive-interface lo1 passive-interface lo2 network 192.168.0.0/24 area 0.0.0.5 network 192.168.10.9/32 area 0.0.0.5 network 192.168.10.53/32 area 0.0.0.5 default-information originate metric 100 ! access-list access permit 127.0.0.1/32 access-list access deny any ! route-map connected_to_ospf deny 10 match interface mpe0 ! route-map connected_to_ospf deny 15 match interface vlan44 ! route-map connected_to_ospf permit 20 match interface lo2 set metric 100 set metric-type type-1 - /snip - I gave up with a config like this : - snip - router id 0.0.0.9; protocol device { scan time 10; } filter export_OSPF { if ( net = 0.0.0.0/0 ) then { print "default net accepted:", net; ospf_metric1 = 100; accept; } accept } protocol kernel { debug all; learn; scan time 2; import all; export all; } protocol ospf { debug all; import all; export filter export_OSPF; area 0.0.0.5 { stubnet 192.168.10.53/32 { cost 100; }; interface "lo1" { stub; }; interface "lo2" { stub; }; interface "vr0" { cost 5; type broadcast; }; interface "vr1" { stub; cost 200; }; }; } - /snip - It's not working as expected. In fact I'm trying to redistribute defautl kernel route into ospf. but it seems to be ignored, and the default was not seeen in the ospf database. What I am missing ? Is there a better way to inject a default route like in quagga (default originate). Regards, -- Raphael Mazelier

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Re: Route aggregation in BIRD - how?
by Ondrej Zajicek 16 Jan '13

16 Jan '13

On Wed, Jan 09, 2013 at 04:12:48AM +0400, Alexander V. Chernikov wrote: > Version 7 :) > Changes > * Fix bug with using 0/0 and :: in aggregation protocol > * Fix mandatory lists not working before second rehash > * Improve docs and configuration example a bit > * Some code cleanups > > Thanks to Robers Hass for his bugreport and testing. Hello I would like to merge the aggregator, but i have three related conceptual problems with your patch: (1) About third of the code is related to BGP attribute processing according to RFC 4271 9.2.2.2 (esp. AS_PATH merging and AS_SET construction) for 'save attributes' option, but this behavior is IMHO mostly useless, as such behavior is deprecated, RFC 6472 recommends that AS_SETs should not be generated and there is a RFC draft [*] that even prohibits them. As this feature adds significant and unnecessary complexity, i would like to remove it. [*] http://tools.ietf.org/html/draft-kumari-deprecate-as-set-confed-set-01 (2) If i understand it correctly, your aggregator keeps a copy of all received and aggregated routes in an internal fib, which is useful for implementing (1), but unnecessarily if you just want to originate an aggregate route if there are some matching routes (or required number of mandatory routes). In that case you just need some counters for summary routes and flags for mandatory routes. Current implementation is especially memory wasteful in the common case 'aggregate full BGP feed to get a default route'. (3) Generated aggregate routes have attrs->proto->proto == proto_agg, but attrs->source == RTS_BGP. What is a reason for that? It does not make much sense to me, because it does not have true BGP route behavior (for example rte_better would not compare it with others because of attrs->proto->proto) so i see no reason why not to define RTS_AGGREGATOR and use it. Even if we would like to generate BGP-style aggregated routes with BGP_AGGREGATOR and BGP_ATOMIC_AGGR attributes. There are some minor issues (e.g. there is probably a bug in bgp_update_sumroute() in BGP_ATOMIC_AGGR generation - even if not received from aggregated routes, this attribute should be generated if BGP routes with non-empty AS_PATH are aggregated and 'save attributes' is disabled), but these probably aren't problematic. If you do not have strong objections, i would remove (1), do some readjustment for (2), fix some minor issues and merge it. Question is whether there is any need to have optional keeping a copy of child routes in (2) for some sophisticated aggregation modes like (1), but without (1), i currently don't see the need. -- 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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OSPF RFC compliance issue?
by Aragon Gouveia 11 Jan '13

11 Jan '13

Hi birdsters, I'm having difficulty getting a bird OSPF instance to peer correctly with a MikroTik RouterOS device over an L2TP PTP link. The symptom is that routes originated from my bird instance show up in RouterOS's route database with no gateway, and are not added to the device's routing table as a result. MikroTik have debugged this and claim that bird's OSPF LS updates are violating RFC. After reading a packet capture and the relevant parts of RFC 2328, they seem to be correct. I've provided a PCAP capture at: http://decoder.geek.sh/misc/bird-mt-ospf.pcap The interesting packet is #14 in the capture. Bird is sending a Router LSA with bizarre link information that does not correspond at all with the PTP link information. In reality the PTP link on the bird device has address 172.18.102.37 with a peer address of 172.18.102.36, and these addresses are unique across all interfaces. I'm using bird 1.3.8 on Debian Wheezy (Linux kernel 3.2.32). Any ideas? Thanks, Aragon

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only enable radv if upstream connection available
by Uwe Kleine-König 11 Jan '13

11 Jan '13

Hello, I'm a bit annoyed because my ipv6 tunnel (via sixxs) is unreliable from time to time and I wonder if bird can help me to at least stop sending out radv packets to my local machines if the tunnel is not working[1]. (Or maybe send packets, but with a zero lifetime.) I read about filters now and also spend some time googling, but still I don't see if/how this could be possible. Does someone of you has a nice idea or a link to an example that could help me? Best regards Uwe [1] for some definition of "not working"

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Change bgp_med and "soft reload"
by 3.listas＠adminlinux.com.br 09 Jan '13

09 Jan '13

Hi, I am evaluating use of BIRD on my network. In my environment I need to change the bgp_med parameter without causing major impact on established BGP sessions. But the changes in parameter bgp_med only take effect after a "bird restart service". I tried with birdc unsuccessfully: reload in bgp reload out bgp restart bgp configure soft bird-BGP_MED.conf configure bird-BGP_MED.conf My config: /etc/bird.conf: log syslog { debug, trace, info, remote, warning, error, auth, fatal, bug }; debug protocols all; router id 192.168.100.1; include "/etc/bird-static.conf"; include "/etc/bird-BGP_MED.conf"; protocol kernel { export all; scan time 20; } protocol device { scan time 10; } protocol bgp qualquer_nome_para_bgp { description "My BGP test Bird Router in LabRouter"; local as 65111; source address 192.168.101.1; neighbor 192.168.101.2 as 65000; export filter { if source = RTS_STATIC then { bgp_med = BGP_MED; accept; } reject; }; import all; } /etc/bird-static.conf: protocol static um_nome_qualquer { route 192.168.100.0/24 via 192.168.101.1; } /etc/bird-BGP_MED.conf: define BGP_MED=200; How do I change the parameter bgp_med without losing the BGP session? Thanks -- Thiago Henrique www.adminlinux.com.br

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Using bird as BGP source db
by Robert Hass 06 Jan '13

06 Jan '13

HI I would like to integrate our sflow/netflow collector with bird. Collector will be fetching information from bird about as-path of queried prefixes. Both - collector and bird will be on same Linux machine. Bird will have one bgp session to our router. Router will send to bird our full bgp table. How I can done this easily ? Best if it's done over SHM / IPC / NET. Rob

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Announce prefix to BGP conditional
by Robert Hass 04 Jan '13

04 Jan '13

Hi Is it possible to announce additional prefix in BGP (let's say inject it) conditional ? My configuration is 3 BGP sessions: 1st BGP session to ISP 2nd and 3rd BGP sessions to customers I would like to announce default-route (0.0.0.0/0) via BGP only if I receiving let's say defined 2 prefixes from my ISP. Is it possible at BIRD ? How I can do this ? My ISP will NOT announce default route to me, so I cannot simply re-announce it to my neighbors. Rob

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BGP and Redistribute Static with AS-Prepend
by Kubacki Wojciech 03 Jan '13

03 Jan '13

Hallo, ist there any way to implement BGP and Redistibute Static with AS-Prepend. I would like to implement following configuration: -------- protocol static { route 2.2.2.2/32 via 10.1.2.1; } protocol bgp test { local as 65501; neighbor 10.2.3.3 as 65501; export filter { if ( source = RTS_STATIC && net = 2.2.2.2/32 ) then { bgp_path.prepend(65502); accept; }; }; }; --------- On the other router i got following: R2#sh ip bgp . Network Next Hop Metric LocPrf Weight Path *> 2.2.2.2/32 10.2.2.2 0 65502 65501 ? I want this (65501 65502) not (65502 65501). Any help would be greatly appreciated. Mit freundlichen Grüßen Wojtek Kubacki

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