RE: BIRD on FreeBSD 9.2 (amd64) - OSPF is not putting routes in the routing table
On November 21, 2013 3:15 PM , Ondrej Filip wrote:
On 21.11.2013 21:09, Claude Marinier wrote:
Hi,
Hi!
I am running BIRD 1.3.11 on FreeBSD 9.2 (amd64). It establishes
full adjacency with its three neighbours (Cisco routers) and its
routing table is correct. BIRD knows about the routers behind its
neighbours. The problem is that the kernel does not know any of the
learned routes, i.e. 'netstat -rnf inet' shows only routes for the
interfaces.
Add a line 'export all' to the kernel protocol.
Here is some text from the documentation : 3.3 Protocol Options
import all | none | filter name | filter { filter commands } | ...
Specify a filter to be used for filtering routes coming from the
protocol to the routing table. all is shorthand for where true and
none is shorthand for where false. Default: all.
export filter
This is similar to the import keyword, except that it works in the
direction from the routing table to the protocol. Default: none.
In my case, the protocol is OSPF. I want to copy routes learned by the
protocol to the routing table. The documentation says to use import
but you are saying export. Which is correct?
Ondrej
I suspect that I am missing something basic but have not found it
yet after many hours of searching. Could someone point me in the
right direction?
Thank you.
The configuration file follows.
RE: FreeBSD, OSPF, and multicast
-Original Message- From: Claude Marinier Sent: Friday, November 01, 2013 9:05 AM To: 'Ondrej Filip' Subject: RE: FreeBSD, OSPF, and multicast -Original Message- From: owner-bird-us...@atrey.karlin.mff.cuni.cz [mailto:owner-bird- us...@atrey.karlin.mff.cuni.cz] On Behalf Of Ondrej Filip Sent: Thursday, October 31, 2013 6:37 PM To: Claude Marinier; bird-us...@bird.network.cz Subject: Re: FreeBSD, OSPF, and multicast On 31.10.2013 14:38, Claude Marinier wrote: Hi, I am building a WAN emulator using a FreeBSD server with DummyNet for WAN effects and BIRD for OSPF. At first, no multicast packets left the server; then I added a default route and they left by that interface only. How can I configure the server so BIRD sends HELLO packets out all the interfaces. Can you send 'show ospf interfaces' and maybe also check if there are no errors BIRD 1.3.11 ready. bird show ospf int WANemu: Interface bce0 (xxx.xxx.xxx.8/29) Type: broadcast Area: 0.0.0.0 (0) State: dr Priority: 1 Cost: 10 Hello timer: 10 Wait timer: 40 Dead timer: 40 Retransmit timer: 5 Designed router (ID): xxx.xxx.xxx.14 Designed router (IP): xxx.xxx.xxx.14 Backup designed router (ID): 0.0.0.0 Backup designed router (IP): 0.0.0.0 Interface bce1 (xxx.xxx.xxx.184/29) Type: broadcast Area: 0.0.0.0 (0) State: dr Priority: 1 Cost: 10 Hello timer: 10 Wait timer: 40 Dead timer: 40 Retransmit timer: 5 Designed router (ID): xxx.xxx.xxx.14 Designed router (IP): xxx.xxx.xxx.189 Backup designed router (ID): 0.0.0.0 Backup designed router (IP): 0.0.0.0 bird show ospf neighbors WANemu: Router ID Pri State DTime Interface Router IP xxx.xxx.xxx.9 1 init/other 00:37 bce0 xxx.xxx.xxx.9 xxx.xxx.xxx.185 1 init/other 00:33 bce1 xxx.xxx.xxx.185 bird echo all bird debug all all There is a lot of output. How can this be restricted to HELLO messages? Got something useful from 'debug all all'. device1: Scanning interfaces WANemu: HELLO packet received from 131.140.113.9 via bce0 WANemu: HELLO packet received from 131.140.113.185 via bce1 device1: Scanning interfaces WANemu: HELLO packet sent via bce1 WANemu: HELLO packet sent via bce0 WANemu: HELLO packet received from 131.140.113.9 via bce0 WANemu: HELLO packet received from 131.140.113.185 via bce1 I am also running 'tcpdump' on one of the interfaces: - it does not show bird's HELLO packets - it does show the Cisco router's HELLO packets - it does show CDP packets from the Cisco router - it does show CDP packets from the server running bird I suspect that there is an underlying assumption (like IGMP or PIM) which I have not yet discovered. Ondrej Thank you. Details: FreeBSD WAMemu 9.2-RELEASE FreeBSD 9.2-RELEASE #0 r255898: Thu Sep 26 22:50:31 UTC 2013 r...@bake.isc.freebsd.org:/usr/obj/usr/src/sys/GENERIC amd64 bird-1.3.11 P.S. I got it working by avoiding multicast with 'type nonbroadcast' and 'neighbors'. -- Claude Marinier
RE: FreeBSD, OSPF, and multicast
-Original Message- From: Alexander V. Chernikov [mailto:melif...@freebsd.org] Sent: Friday, November 01, 2013 9:52 AM To: Claude Marinier; Ondrej Filip; bird-us...@bird.network.cz Subject: Re: FreeBSD, OSPF, and multicast On 01.11.2013 17:38, Claude Marinier wrote: -Original Message- From: Claude Marinier Sent: Friday, November 01, 2013 9:05 AM To: 'Ondrej Filip' Subject: RE: FreeBSD, OSPF, and multicast -Original Message- From: owner-bird-us...@atrey.karlin.mff.cuni.cz [mailto:owner-bird- us...@atrey.karlin.mff.cuni.cz] On Behalf Of Ondrej Filip Sent: Thursday, October 31, 2013 6:37 PM To: Claude Marinier; bird-us...@bird.network.cz Subject: Re: FreeBSD, OSPF, and multicast On 31.10.2013 14:38, Claude Marinier wrote: Hi, I am building a WAN emulator using a FreeBSD server with DummyNet for WAN effects and BIRD for OSPF. At first, no multicast packets left the server; then I added a default route and they left by that interface only. How can I configure the server so BIRD sends HELLO packets out all the interfaces. Can you send 'show ospf interfaces' and maybe also check if there are no errors BIRD 1.3.11 ready. bird show ospf int WANemu: Interface bce0 (xxx.xxx.xxx.8/29) Type: broadcast Area: 0.0.0.0 (0) State: dr Priority: 1 Cost: 10 Hello timer: 10 Wait timer: 40 Dead timer: 40 Retransmit timer: 5 Designed router (ID): xxx.xxx.xxx.14 Designed router (IP): xxx.xxx.xxx.14 Backup designed router (ID): 0.0.0.0 Backup designed router (IP): 0.0.0.0 Interface bce1 (xxx.xxx.xxx.184/29) Type: broadcast Area: 0.0.0.0 (0) State: dr Priority: 1 Cost: 10 Hello timer: 10 Wait timer: 40 Dead timer: 40 Retransmit timer: 5 Designed router (ID): xxx.xxx.xxx.14 Designed router (IP): xxx.xxx.xxx.189 Backup designed router (ID): 0.0.0.0 Backup designed router (IP): 0.0.0.0 bird show ospf neighbors WANemu: Router ID Pri State DTime Interface Router IP xxx.xxx.xxx.9 1 init/other 00:37 bce0 xxx.xxx.xxx.9 xxx.xxx.xxx.185 1 init/other 00:33 bce1 xxx.xxx.xxx.185 bird echo all bird debug all all There is a lot of output. How can this be restricted to HELLO messages? Got something useful from 'debug all all'. device1: Scanning interfaces WANemu: HELLO packet received from 131.140.113.9 via bce0 WANemu: HELLO packet received from 131.140.113.185 via bce1 device1: Scanning interfaces WANemu: HELLO packet sent via bce1 WANemu: HELLO packet sent via bce0 WANemu: HELLO packet received from 131.140.113.9 via bce0 WANemu: HELLO packet received from 131.140.113.185 via bce1 I am also running 'tcpdump' on one of the interfaces: - it does not show bird's HELLO packets Just to ensure: what filter expression is set for tcpdump? None. - it does show the Cisco router's HELLO packets - it does show CDP packets from the Cisco router - it does show CDP packets from the server running bird Do you have some kind of firewall enabled (ipfw, pf, or..)? Yes, IPFW is configured with some of the default entries (from sample config file) and pipes for delay. 00010 pipe 1 ip from any to any out xmit bce0 00020 pipe 2 ip from any to any out xmit bce1 00100 allow ip from any to any via lo0 00200 deny ip from any to 127.0.0.0/8 00300 deny ip from 127.0.0.0/8 to any 00400 deny ip from any to ::1 00500 deny ip from ::1 to any 00600 allow ipv6-icmp from :: to ff02::/16 00700 allow ipv6-icmp from fe80::/10 to fe80::/10 00800 allow ipv6-icmp from fe80::/10 to ff02::/16 00900 allow ipv6-icmp from any to any ip6 icmp6types 1 01000 allow ipv6-icmp from any to any ip6 icmp6types 2,135,136 65000 allow ip from any to any 65535 deny ip from any to any I will look into removing the IPv6 rules later. I suspect that there is an underlying assumption (like IGMP or PIM) which I have not yet discovered. Ondrej Thank you. Details: FreeBSD WAMemu 9.2-RELEASE FreeBSD 9.2-RELEASE #0 r255898: Thu Sep 26 22:50:31 UTC 2013 r...@bake.isc.freebsd.org:/usr/obj/usr/src/sys/GENERIC amd64 bird-1.3.11 P.S. I got it working by avoiding multicast with 'type nonbroadcast' and 'neighbors'. -- Claude Marinier
FreeBSD, OSPF, and multicast
Hi, I am building a WAN emulator using a FreeBSD server with DummyNet for WAN effects and BIRD for OSPF. At first, no multicast packets left the server; then I added a default route and they left by that interface only. How can I configure the server so BIRD sends HELLO packets out all the interfaces. Thank you. Details: FreeBSD WAMemu 9.2-RELEASE FreeBSD 9.2-RELEASE #0 r255898: Thu Sep 26 22:50:31 UTC 2013 r...@bake.isc.freebsd.org:/usr/obj/usr/src/sys/GENERIC amd64 bird-1.3.11 P.S. I got it working by avoiding multicast with 'type nonbroadcast' and 'neighbors'. -- Claude Marinier
RE: FreeBSD, OSPF, and multicast
On Thursday, October 31, 2013 11:37 AM, Tapio Haapala wrote: 31.10.2013 15:38, Claude Marinier kirjoitti: Hi, I am building a WAN emulator using a FreeBSD server with DummyNet for WAN effects and BIRD for OSPF. At first, no multicast packets left the server; then I added a default route and they left by that interface only. How can I configure the server so BIRD sends HELLO packets out all the interfaces. Did you set ip for each interface? You need valid ip for each interface. Yes. Here are details. bce0: flags=8843UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST metric 0 mtu 1500 options=c01bbRXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,VLAN_HWTSO,LINKSTATE ether 00:1e:0b:90:2e:e0 inet 131.140.113.14 netmask 0xfff8 broadcast 131.140.113.15 inet6 fe80::21e:bff:fe90:2ee0%bce0 prefixlen 64 scopeid 0x1 nd6 options=29PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL media: Ethernet 100baseTX full-duplex status: active bce1: flags=8843UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST metric 0 mtu 1500 options=c01bbRXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,VLAN_HWTSO,LINKSTATE ether 00:1e:0b:90:2e:dc inet 131.140.113.189 netmask 0xfff8 broadcast 131.140.113.191 inet6 fe80::21e:bff:fe90:2edc%bce1 prefixlen 64 scopeid 0x2 nd6 options=29PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL media: Ethernet 100baseTX full-duplex status: active ipfw0: flags=8801UP,SIMPLEX,MULTICAST metric 0 mtu 65536 nd6 options=29PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL lo0: flags=8049UP,LOOPBACK,RUNNING,MULTICAST metric 0 mtu 16384 options=63RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6 inet6 ::1 prefixlen 128 inet6 fe80::1%lo0 prefixlen 64 scopeid 0xa inet 127.0.0.1 netmask 0xff00 nd6 options=21PERFORMNUD,AUTO_LINKLOCAL Details: FreeBSD WAMemu 9.2-RELEASE FreeBSD 9.2-RELEASE #0 r255898: Thu Sep 26 22:50:31 UTC 2013 r...@bake.isc.freebsd.org:/usr/obj/usr/src/sys/GENERIC amd64 bird-1.3.11 P.S. I got it working by avoiding multicast with 'type nonbroadcast' and 'neighbors'. If all your routers in l2 segment use bird you can also use real broadcast yes; for interface. Then you do not need list your neighbors. It is wery usefull addon when you have problems with multicast. Would using real broadcast yes; cause BIRD to send HELLO out all interfaces? The interfaces are on separate sub-networks; this would not work but I am curious. When I set one of the interfaces as the default route, BIRD can form a full adjacency with the Cisco router on that side but not on the other. I can see the HELLO packets leaving BIRD by that interface. I can change the default route to the other interface and then see HELLO leaving that interface. We plan to connect four Cisco routers to BIRD; each router will have a simulated remote site behind it. I am learning a lot as I research this problem. This is good but I need a solution. :-) Is there some FreeBSD setting which enables multicast to work properly? Does BIRD send HELLO out each interface individually? -- C Marinier
