- Bird-users - Mailing Lists

Re: Route aggregation in BIRD - how?
by Ondrej Zajicek 14 Aug '12

14 Aug '12

On Thu, Feb 23, 2012 at 01:13:16AM +0000, Alexander V. Chernikov wrote: > On 24.01.2012 22:12, Alexander V. Chernikov wrote: >> Ondrej Zajicek wrote: >>> On Mon, Jan 23, 2012 at 10:30:48PM +0400, Alexander V. Chernikov wrote: >>>> On 23.01.2012 22:00, Ondrej Zajicek wrote: >>>>> On Mon, Jan 23, 2012 at 08:14:28PM +0400, Alexander V. Chernikov wrote: >>>>>> On 23.01.2012 20:01, Maciej Wierzbicki wrote: >>>>>>> Hello. > > Hello. > Long story short, beta for aggregation protocol is attached. Thanks, i will look at it. -- 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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add-path support in bird?
by Job Snijders 14 Aug '12

14 Aug '12

Hi fellow bird fanatics, Does BIRD support the BGP "Add Path" feature? I operate a looking glass which according to 'show route count' is handling '8475339 of 8475339 routes for 428185 networks'. I'd like to pass the full table along to another looking glass and have bird send BGP Updates for all routes it has in its table. If BIRD were to perform best path calculation and then send the prefixes onwards valuable information would be lost. Kind regards, Job

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[patch] interface name as router id
by Alexander V. Chernikov 28 Jul '12

28 Jul '12

Hello list! The following patch permits the following syntax: router id "lo1"; Primary interface IPv4 address is used. Tested on FreeBSD/debian with both IPv4/IPv6 build.

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Need some help about static routing tables on two hosts.
by Eliezer Croitoru 26 Jul '12

26 Jul '12

i' kind of new in some of this stuff so i need basically directions. i am working on a lab for a real implementation. the way things works now is like that: 10 proxies behind 2 LB that works based o linux route policies. the policies are "from ip/mask use routing table 10" will take all traffic from these sources through proxy 10 route that is store in linux routing table 10 that contains "default via proxy_ip". there is a "master" server that gets live extended status of each proxy. it can be up\down load = 80% etc... and if a change of a route on the LB should be changed it is being committed using a script over ssh almost manually. what i want to do is to use bird to control the routing tables on the LB and on the "master" server have an instance of bird the will feed the routes to the LB bird. so the LB will be completely untouchable in the OS commands level. i have tried to understand if there is a way to make it all work but i dont seem to understand what i can and what i cannot do using bird. the clients are at: 10.110.0.0/16 the LB has the address 10.110.0.1 + 10.100.1.1 + 10.127.1.1/24 the proxy servers are at 10.100.1.0/24 the master sits in the proxy lan at: 10.100.1.254 the gw of the proxy servers is the LB 10.100.1.1 the default gw of the LB is 10.127.1.254 so i want the master to monitor the proxy servers and in a case of change in the network status of a proxy for any reason to let say down i would change the routes in specific table and then send bird "configure soft" to update the settings. so if there is a nice method of combining all bird capabilities and some routing protocol for the process i will be very happy to hear about it. i have tried to use bgp in a local as between the master and the LB but it seems that on the LB when he gets the static route it states the route: 0.0.0.0 .... unreachable. i will later will put here the settings i used. Thanks, Eliezer -- Eliezer Croitoru https://www1.ngtech.co.il IT consulting for Nonprofit organizations eliezer <at> ngtech.co.il

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default route problem
by e2rd＠piekielko.pl 26 Jul '12

26 Jul '12

Hi, I've got very simple config: -- bird.conf -- log "/var/log/bird.log" { debug, trace, info, remote, warning, error, auth, fatal, bug }; debug protocols all; router id 172.0.0.1; protocol kernel { learn; persist; scan time 20; export all; } protocol device { scan time 10; } protocol static { route 0.0.0.0/0 drop; } protocol ospf MyOSPF { export all; area 0.0.0.0 { interface "dummy*" { }; }; area 10.0.0.0 { nssa; interface "eth*" { type nbma; }; }; } -- end -- If area 10.0.0.0 is commented it works as expected: bird> s o l Global Type LS ID Router Age Sequence Checksum 0005 192.168.54.255 172.0.0.1 3 80000001 c588 0005 192.168.55.0 172.0.0.1 3 80000001 ba92 0005 0.0.0.0 172.0.0.1 3 80000001 cb22 0005 10.155.74.255 172.0.0.1 3 80000001 cc31 Area 0.0.0.0 Type LS ID Router Age Sequence Checksum 0001 172.0.0.1 172.0.0.1 2 80000001 ac9b bird> but if I uncomment it (area 10) default route is disapearing: bird> sh ro 0.0.0.0/0 blackhole [static1 01:34] ! (200) via 10.5.2.1 on eth0 [kernel1 23:50] (10) 10.5.2.0/24 dev eth0 [MyOSPF 23:51] * I (150/10) [172.0.0.1] 10.155.74.0/24 via 10.155.74.5 on tun0 [kernel1 23:50] * (10) 192.168.54.0/24 via 10.155.74.5 on tun0 [kernel1 23:50] * (10) 192.168.55.0/24 via 10.155.74.5 on tun0 [kernel1 23:50] * (10) 172.0.0.1/32 dev dummy0 [MyOSPF 23:51] * I (150/0) [172.0.0.1] bird> s o l Global Type LS ID Router Age Sequence Checksum 0005 192.168.54.255 172.0.0.1 2 80000001 c588 0005 192.168.55.0 172.0.0.1 2 80000001 ba92 0005 10.155.74.255 172.0.0.1 2 80000001 cc31 Area 0.0.0.0 Type LS ID Router Age Sequence Checksum 0001 172.0.0.1 172.0.0.1 1 80000001 af97 0003 10.5.2.255 172.0.0.1 1 80000001 e2b1 Area 10.0.0.0 Type LS ID Router Age Sequence Checksum 0001 172.0.0.1 172.0.0.1 1 80000001 22b7 0003 172.0.0.1 172.0.0.1 1 80000001 847d bird> If the area 10.0.0.0 is stub or nssa default route is propagated in ospf. After changing area 10 to normal area and reconfiguring bird log says: <TRACE> MyOSPF: Going to remove LSA Type: 0005, Id: 0.0.0.0, Rt: 172.0.0.1, Age: 3600, Seqno: 0x7fffffff <TRACE> MyOSPF: Flushing AS-external-LSA for 0.0.0.0/0 <TRACE> MyOSPF: Flushing summary-LSA (id=0.0.0.0, type=3) <TRACE> MyOSPF: Going to remove LSA Type: 0003, Id: 0.0.0.0, Rt: 172.0.0.1, Age: 3600, Seqno: 0x7fffffff <TRACE> MyOSPF: Flushing AS-external-LSA for 0.0.0.0/0 Why 0.0.0.0/0 is removed from ospf while other kernel routes not? How redistribute it in multiple areas? other info: localhost:/tmp# ip ro sh 10.155.74.5 dev tun0 proto kernel scope link src 10.155.74.6 10.155.74.0/24 via 10.155.74.5 dev tun0 192.168.54.0/24 via 10.155.74.5 dev tun0 192.168.55.0/24 via 10.155.74.5 dev tun0 10.5.2.0/24 dev eth0 proto kernel scope link src 10.5.2.2 default via 10.5.2.1 dev eth0 lo: 127.0.0.1/8 eth0: 10.5.2.2/24 tun0: 10.155.74.6 peer 10.155.74.5/32 dummy0: 172.0.0.1/32 regards, -- Łukasz

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RIP not working - interface is much too slow
by Jarek 26 Jul '12

26 Jul '12

Hello! I've installed bird on new, quite fast machine with GE interfaces but connected to router with 2Mbps output to WAN. The configuration is quite simple and tested on another machine (4 years old). Except defaults, I have: protocol rip myrip { export all; import all; period 10; authentication none; interface "*" { mode broadcast; }; } I have one private network 192.168... connected to this machine, and I want to distribute info about this network to other routers. Unfortunetely it is not working. I don't see any messages about distributing this network, but I see the following messages every 10 secosnds: Interface eth1 is much too slow, droping request. Routes from outside are accepted and I see them in my routing table. I can also see routes to my other private net, broadcasted by old router with almost the same bird configuration. What is wrong ? Why the interface is too slow ? best regards Jarek

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RPKI support
by Alexander Shikov 23 Jul '12

23 Jul '12

Hello! Is there plans for RPKI support in bird? -- Alexander Shikov Technical Staff, Digital Telecom IX

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Linux route caching and busy Bird protocols
by Michael Vallaly 23 Jul '12

23 Jul '12

Hello again fellow bird users, Not sure if anyone has run across this before or not, but poking around with a couple of bird (1.3.7 and 1.3.3) instances on Linux (2.6 - 3.3), it seems that something related to bird is flushing the kernel route cache _very_ frequently? So quickly in fact that I often don't have _ANY_ cached routes displayed when running bird (BGP protocol ~400k routes). I noticed this initially running a simple 'watch -n 1 ip route show cache'. Is this normal? As soon as I disable the BGP protocols in bird I start seeing expected cached routes populate for connected networks, that persist normally for while till they eventually timeout. Turning on bird with BGP (full feed) all those disappear from the cache (ip ro sh cache). Interestingly I get different metrics via lnstat, which seems to indicate there are ~9k routes in the router cache table while the BGP protocol is running? (though again aren't displayed by iproute2) <snip> lnstat -c -1 -i 1 -f rt_cache -k entries,in_hit,in_slow_tot rt_cache|rt_cache|rt_cache| entries| in_hit|in_slow_| | | tot| 8563| 159| 37| 8668| 352| 69| 8725| 297| 42| 8790| 467| 50| 8857| 565| 53| 8929| 393| 62| 9036| 342| 113| 9122| 230| 94| 9186| 281| 66| 9340| 545| 89| </snip> Maybe this is a cosmetic issue with iproute2? or reason for concern (I should be tweaking the route cache GC)? I would hope adding/removing a dynamic route from the kernel routing tables shouldn't invalidate the entire route cache should it? Thanks for your time, I really appreciate all the work that goes into making Bird great. -Mike -- Michael Vallaly <bird(a)nolatency.com>

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rip is broken?
by Alexander V. Chernikov 23 Jul '12

23 Jul '12

Hello list! It seems that rip-ng changes introduced in f7615037 broke RIP so bird dumps core on first RIP packet: # gdb bird bird.core GNU gdb 6.1.1 [FreeBSD] Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i386-marcel-freebsd"... Core was generated by `bird'. Program terminated with signal 6, Aborted. Reading symbols from /lib/libc.so.7...done. Loaded symbols for /lib/libc.so.7 Reading symbols from /libexec/ld-elf.so.1...done. Loaded symbols for /libexec/ld-elf.so.1 #0 0x281dbb97 in kill () from /lib/libc.so.7 (gdb) bt #0 0x281dbb97 in kill () from /lib/libc.so.7 #1 0x281dbaf6 in raise () from /lib/libc.so.7 #2 0x281da6ca in abort () from /lib/libc.so.7 #3 0x0808d5af in bug (msg=Could not find the frame base for "bug". ) at log.c:252 #4 0x080795df in advertise_entry (p=0x2831d310, b=0x283b8004, whotoldme=2886730113, iface=0x0) at ../../../proto/rip/rip.c:331 #5 0x080797f6 in process_block (p=0x2831d310, block=0x283b8004, whotoldme=2886730113, iface=0x0) at ../../../proto/rip/rip.c:387 #6 0x08079b00 in rip_process_packet (p=0x2831d310, packet=0x283b8000, num=2, whotoldme=2886730113, port=520, iface=0x0) at ../../../proto/rip/rip.c:450 #7 0x08079cd2 in rip_rx (s=0x283051c0, size=40) at ../../../proto/rip/rip.c:497 #8 0x08088cf9 in sk_read (s=0x283051c0) at io.c:1463 #9 0x080893eb in io_loop () at io.c:1676 #10 0x0808e7fe in main (argc=Cannot access memory at address 0x5 ) at main.c:699 rip_rx() now sends NULL interface name to rip_process_packet(). It seems that specifying interface makes rip working again: diff --git a/proto/rip/rip.c b/proto/rip/rip.c index 281296a..e4ccbff 100644 --- a/proto/rip/rip.c +++ b/proto/rip/rip.c @@ -477,9 +477,9 @@ rip_rx(sock *s, int size) #ifdef IPV6 if (! i->iface || s->lifindex != i->iface->index) return 1; +#endif iface = i->iface; -#endif CHK_MAGIC;

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OSPF Fast Hello
by Javier Lorenzo Prieto 28 Jun '12

28 Jun '12

We are using BIRD to configure load balancing and redundancy between two sites. These sites are interconnected via two short-range RF links (each with 15 Mpbs effective throughput and delay of 5ms). Because we intend to send VoIP over these links and would like to avoid dropping calls in the event of interruptions in one of the links. Therefore, dynamic routes need to be updated very quickly. --------- SITE 1 -- R1 R2 -- SITE 2 --------- Does BIRD allow setting the parameters as follows? • dead 2 • hello 1 protocol ospf { import all; ecmp on; area 0.0.0.0 { interface "vlan200", "vlan201" { cost 5; check link on; type broadcast; hello 1; retransmit 4; wait 1; dead 2; authentication none; }; }; } When we try this configuration, our routers never reach the point of creating adjacency. However, everything works OK when setting dead=3 and hello=1. Furthermore the parameters dead=2 and hello=1 do work when using QUAGGA. Am I missing anything? Thanks in advance for your help!

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