October 2009 - Bird-users

Memory Usage of BIRD
by Wolfgang Hennerbichler 05 Dec '09

05 Dec '09

Hi Folks, I just made a little experiment: * let BIRD peer with a router that has Full Feed * letting BIRD eat Full Feed (and tweet) - memory footprint ~ 130 MB BTW (64 Bit Linux) * shutting the session down on the router-side * BIRD's memory consumption decreased to 128 MB, but was never freed again. So now I don't know if this is 'by design' (routes are marked dirty and overwritten on next usage) or a bug... Thanks for any replies; Wolfgang -- www.vix.at | www.aco.net wh(a)univie.ac.at | WH844-RIPE Vienna University Computer Center

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Importing kernel routes
by Jann Traschewski 06 Nov '09

06 Nov '09

Ahoj, I want to import the following route into the bird: db0fhn:~# ip route show table 230 44.4.28.50 via 75.101.49.52 dev tunl0 onlink The syslog shows: Oct 19 19:21:49 db0fhn bird: Kernel told us to use non-neighbor 75.101.49.52 for 44.4.28.50/32 I'm pretty sure to add this route to the bird for redistribution via BGP4. My config: protocol kernel { learn; # Learn all alien routes from the kernel persist; # Don't remove routes on bird shutdown scan time 20; # Scan kernel routing table every 20 seconds export all; # Default is export none kernel table 230; # Kernel table to synchronize with (default: main) } My version: 1.1.4 (Debian/Lenny) How can I solve this problem? Thank you, Jann Traschewski -- Jann Traschewski, Drosselstr.1, D-90513 Zirndorf, Germany Tel.: +49-911-696971, Mobile: +49-170-1045937, E-Mail: jann(a)gmx.de

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neighbor ospf bird crash after local configure
by Martin Kraus 02 Nov '09

02 Nov '09

hello. I've managed to crash two remote bird instances on two remote routers by running configure on a local bird instance. they are in the same ospf area, but on different interfaces. third remote router, which is connected to those two interfaces, survived. this is the interesting part in the log. 31-10-2009 19:40:08 <TRACE> ospf1: Scheduling RT calculation. 31-10-2009 19:40:08 <TRACE> ospf1: Starting routing table calculation 31-10-2009 19:40:08 <TRACE> ospf1: Starting routing table calculation for area 0.0.0.0 31-10-2009 19:40:08 <ERR> Router's parent has no next hop. (EN=212.71.177.59, PAR=212.71.177.41) 31-10-2009 19:40:08 <ERR> Router's parent has no next hop. (EN=212.71.177.42, PAR=212.71.177.41) 31-10-2009 19:40:08 <BUG> Did not find next hop interface for INSPF lsa! does anyone now what might have happened? thanks mk

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Filter examples
by openbsd misc 01 Nov '09

01 Nov '09

Hi, I'm investigating Bird and I'm interested in seeing some more examples of filters I'm looked at test.conf and I'd rather see some real world filters, stuff that people typically do, change local pref for example. Can anyone help with examples or pointers to more filter examples. Currently have Bird 1.1.4 on latest Debian Cheers Jon

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how to set priority of routers in ospf
by Martin Kraus 27 Oct '09

27 Oct '09

Hello. I'm running ospf from a router against two other routers on the same ethernet segment. Those two routers a both capable of routing given prefixes, but I prefer one of them to do the actual routing and use the other one as a backup router in case of emergencies. How can I set such a preference? I thought of using ospf_metric2, but it is supposed to work only when ospf_metric1 isn't set, which is (checked using show route all). For some reason the configuration does what I need, but I can't figure out why. Could anyone shed some light on this? thanks mk

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My routing size is too big!
by David J Craigon 15 Oct '09

15 Oct '09

Hello, I'm trying to use bird to get the complete internet routing table onto a linux box. I've got a BGP session with a transit provider. It works for a bit then bombs out with: ebgp: Received: Maximum number of prefixes reached: 00010100000002 Interestingly, if I redirect these routes into an alternative routing table (e.g. table test; protocol bgp ebgp { ... table test; ... } ), it works OK. 1) Where do I need to increase the limit? In bird? In the Kernel? 2) Can I route them into a separate routeing table, aggregate them, then inject them into the kernel? Any help appreciated, David

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bird package in slitaz linux
by Allan Pinto 06 Oct '09

06 Oct '09

hi all, i have made package for BIRD on slitaz linux, http://www.slitaz.org/en http://www.slitaz.org/en, which will be available in their repository in a day or two -->http://hg.slitaz.org/wok/file/885440c73b33/bird/receipt On another note. will there be a possibility for bird to support MPLS/BGP vpn's in the future, any plans of MPLS at all? -- Thanx and regd's. Allan. http://www.in2dwok.com

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ospf interoperability problems with cisco and other errors
by Csaba Szép 05 Oct '09

05 Oct '09

Hi All! I'm a very new bird user, but i have some problems with cisco 7200 router. First, the HELLO packet ignored with "Bad OSPF hello packet from 1.0.0.1 received: options mismatch (0x12)." if i use the cisco default ospf configuration. With "ip ospf lls disable" option everything is ok. Second, i advertise some alias IP from the pc to the cisco router, but if i remove the alias address from the interface some OSPF routes still present in the cisco router. Here is the relevant configuration: Cisco 7200 12.2(28)SB5 interface Loopback0 ip address 3.0.0.1 255.255.255.255 ! interface FastEthernet0/0 ip address 1.0.0.1 255.255.255.0 ip ospf message-digest-key 1 md5 benabela ip ospf lls disable duplex full ! router ospf 1 log-adjacency-changes area 0.0.0.0 authentication message-digest network 1.0.0.0 0.0.0.255 area 0.0.0.0 default-information originate ! ip classless ip route 0.0.0.0 0.0.0.0 Loopback0 Bird 1.1.4 protocol kernel { learn; scan time 20; import all; export none; } protocol device { scan time 10; } protocol ospf ospf1 { debug { routes,filters }; export filter { if net ~ 192.0.2.0/24 then accept; reject; }; area 0.0.0.0 { interface "tap1" { authentication cryptographic; password "benabela"; }; }; }; ip addr show output without alias adresses: 22: tap1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 500 link/ether 00:ff:1a:ea:21:0c brd ff:ff:ff:ff:ff:ff inet 1.0.0.2/24 brd 1.0.0.255 scope global tap1 inet6 fe80::2ff:1aff:feea:210c/64 scope link valid_lft forever preferred_lft forever The tap1 and cisco fa0/0 is bridged. The tap1:0 and tap1:1 alias ip now not present (earlier i up and down the alias interfaces) , but cisco show this: 1.0.0.0/24 is subnetted, 1 subnets C 1.0.0.0 is directly connected, FastEthernet0/0 3.0.0.0/32 is subnetted, 1 subnets C 3.0.0.1 is directly connected, Loopback0 O E2 192.0.2.0/24 [110/10000] via 1.0.0.2, 00:28:35, FastEthernet0/0 S* 0.0.0.0/0 is directly connected, Loopback0 Bird show this: bird> sh route 0.0.0.0/0 via 1.0.0.1 on tap1 [ospf1 17:47] E2 (150/10/1) [1] via 10.1.16.1 on eth0 [kernel1 17:44] (10) 1.0.0.0/24 dev tap1 [direct1 17:44] (240) dev tap1 [ospf1 17:47] I (150/10) 2.0.0.0/24 dev tap2 [direct1 17:44] (240) dev tap2 [ospf2 17:44] I (150/10) 10.1.16.0/20 dev eth0 [direct1 17:44] (240) 127.0.0.0/8 dev lo [direct1 17:44] (240) 192.168.252.0/24 dev vmnet2 [direct1 17:44] (240) 192.168.253.0/24 dev vmnet1 [direct1 17:44] (240) 192.168.254.0/24 dev vmnet8 [direct1 17:44] (240) If i up the tap1:0 and tap1:1 22: tap1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 500 link/ether 00:ff:1a:ea:21:0c brd ff:ff:ff:ff:ff:ff inet 1.0.0.2/24 brd 1.0.0.255 scope global tap1 inet 192.0.2.1/32 brd 192.0.2.255 scope global tap1:0 inet 192.0.2.2/32 brd 192.0.2.255 scope global tap1:1 inet6 fe80::2ff:1aff:feea:210c/64 scope link valid_lft forever preferred_lft forever bird show this: bird> show route 0.0.0.0/0 via 1.0.0.1 on tap1 [ospf1 17:47] E2 (150/10/1) [1] via 10.1.16.1 on eth0 [kernel1 17:44] (10) 1.0.0.0/24 dev tap1 [direct1 17:44] (240) dev tap1 [ospf1 17:47] I (150/10) 2.0.0.0/24 dev tap2 [direct1 17:44] (240) dev tap2 [ospf2 17:44] I (150/10) 10.1.16.0/20 dev eth0 [direct1 17:44] (240) 127.0.0.0/8 dev lo [direct1 17:44] (240) 192.168.252.0/24 dev vmnet2 [direct1 17:44] (240) 192.168.253.0/24 dev vmnet1 [direct1 17:44] (240) 192.168.254.0/24 dev vmnet8 [direct1 17:44] (240) 192.0.2.1/32 dev tap1 [direct1 18:26] (240) 192.0.2.2/32 dev tap1 [direct1 18:27] (240) cisco show this: 1.0.0.0/24 is subnetted, 1 subnets C 1.0.0.0 is directly connected, FastEthernet0/0 3.0.0.0/32 is subnetted, 1 subnets C 3.0.0.1 is directly connected, Loopback0 192.0.2.0/24 is variably subnetted, 3 subnets, 2 masks O E2 192.0.2.2/32 [110/10000] via 1.0.0.2, 00:00:40, FastEthernet0/0 O E2 192.0.2.0/24 [110/10000] via 1.0.0.2, 00:00:40, FastEthernet0/0 O E2 192.0.2.1/32 [110/10000] via 1.0.0.2, 00:00:40, FastEthernet0/0 S* 0.0.0.0/0 is directly connected, Loopback0 Down the tap alias interfaces: bird> show route 0.0.0.0/0 via 1.0.0.1 on tap1 [ospf1 17:47] E2 (150/10/1) [1] via 10.1.16.1 on eth0 [kernel1 17:44] (10) 1.0.0.0/24 dev tap1 [direct1 17:44] (240) dev tap1 [ospf1 17:47] I (150/10) 2.0.0.0/24 dev tap2 [direct1 17:44] (240) dev tap2 [ospf2 17:44] I (150/10) 10.1.16.0/20 dev eth0 [direct1 17:44] (240) 127.0.0.0/8 dev lo [direct1 17:44] (240) 192.168.252.0/24 dev vmnet2 [direct1 17:44] (240) 192.168.253.0/24 dev vmnet1 [direct1 17:44] (240) 192.168.254.0/24 dev vmnet8 [direct1 17:44] (240) But cisco still present some bad routes: 1.0.0.0/24 is subnetted, 1 subnets C 1.0.0.0 is directly connected, FastEthernet0/0 3.0.0.0/32 is subnetted, 1 subnets C 3.0.0.1 is directly connected, Loopback0 O E2 192.0.2.0/24 [110/10000] via 1.0.0.2, 00:04:18, FastEthernet0/0 S* 0.0.0.0/0 is directly connected, Loopback0 So what is the problem? Some debug output from bird: bird: ospf1 < added 192.0.2.0/24 dev tap1 bird: ospf1 < removed 192.0.2.0/24 dev tap1 bird: ospf1 < added 192.0.2.1/32 dev tap1 bird: ospf1 < removed 192.0.2.1/32 dev tap1 bird: ospf1 < added 192.0.2.0/24 dev tap1 bird: ospf1 < removed 192.0.2.0/24 dev tap1 bird: ospf1 < added 192.0.2.0/24 dev tap1 bird: ospf1 < removed 192.0.2.0/24 dev tap1 bird: ospf1 < added 192.0.2.2/32 dev tap1 bird: ospf1 < removed 192.0.2.1/32 dev tap1 bird: ospf1 < removed 192.0.2.2/32 dev tap1 So why produced bird these lines with /24 prefix?: bird: ospf1 < added 192.0.2.0/24 dev tap1 bird: ospf1 < removed 192.0.2.0/24 dev tap1 Thx Csszep

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Bird, Cisco & OSPF problem
by Jarek 05 Oct '09

05 Oct '09

Hi! I have problem with ospf configuration between Linux and Cisco. We have: LAN 10.200.199.0 | Linux (two public interfaces) | | INTERNET | Cisco (one public interface) | LAN 10.200.200.0 Between Linux and Cisco we have two GRE tunnels. I'd like to setup OSPF so gre tunnels will be redundant. On Linux I have: protocol kernel { persist; learn; scan time 20; export all; import all; } protocol device { scan time 10; } protocol direct { interface "*"; } protocol ospf myOSPF { tick 2; export all; import all; area 0 { interface "tunnel*"; }; } On cisco: router ospf 100 router-id 10.200.200.1 log-adjacency-changes network 10.200.200.0 0.0.0.255 area 0 network 192.168.100.68 0.0.0.3 area 0 network 192.168.101.68 0.0.0.3 area 0 192.168.100 and 192.168.101 are tunnel networks. The problem is that probably Linux doesn't send info about directly connected networks to Cisco. In Linux routing table, I see proper route: 10.200.200.0/24 via 192.168.100.70 dev tunnel0 proto bird But on Cisco side, there are only static routes: 85.0.0.0/29 is subnetted, 1 subnets S 85.*.*.* [1/0] via 79.*.*.* 217.*.*.*/30 is subnetted, 1 subnets S 217.*.*.* [1/0] via 79.*.*.* 10.0.0.0/24 is subnetted, 1 subnets C 10.200.200.0 is directly connected, Ethernet0 79.0.0.0/30 is subnetted, 1 subnets C 79.*.*.* is directly connected, Ethernet1 192.168.100.0/30 is subnetted, 1 subnets C 192.168.100.68 is directly connected, Tunnel0 192.168.101.0/30 is subnetted, 1 subnets C 192.168.101.68 is directly connected, Tunnel1 show ip ospf Routing Process "ospf 100" with ID 10.200.200.1 Supports only single TOS(TOS0) routes Supports opaque LSA SPF schedule delay 5 secs, Hold time between two SPFs 10 secs Minimum LSA interval 5 secs. Minimum LSA arrival 1 secs Number of external LSA 76. Checksum Sum 0x2231B2 Number of opaque AS LSA 0. Checksum Sum 0x0 Number of DCbitless external and opaque AS LSA 76 Number of DoNotAge external and opaque AS LSA 0 Number of areas in this router is 1. 1 normal 0 stub 0 nssa External flood list length 0 Area BACKBONE(0) Number of interfaces in this area is 3 Area has no authentication SPF algorithm executed 51 times Area ranges are Number of LSA 3. Checksum Sum 0x36EE Number of opaque link LSA 0. Checksum Sum 0x0 Number of DCbitless LSA 2 Number of indication LSA 0 Number of DoNotAge LSA 0 Flood list length 0 show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 10.209.192.2 1 FULL/ - 00:00:38 192.168.100.69 Tunnel0 10.209.192.2 1 FULL/ - 00:00:38 192.168.101.69 Tunnel1 What is wrong ? best regards -- Jarek <jarek(a)poczta.srv.pl>

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feature request: per protocol instance router id
by Csaba Szép 05 Oct '09

05 Oct '09

Hi! Now the router id is global option, it would be great if that is configurable per (ospf) protocol instance like cisco. router ospf 1 router-id 2.0.0.1 log-adjacency-changes area 0.0.0.0 authentication message-digest redistribute static subnets network 2.0.0.0 0.0.0.255 area 0.0.0.0 default-information originate Any chance? thx csszep

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