One more (last) question: since when (which Bird) -release is ECMP like this supported?
Thx BR Ar Am Di., 11. Juni 2019 um 15:39 Uhr schrieb Kenth Eriksson < [email protected]>: > On Tue, 2019-06-11 at 15:13 +0200, Arno O wrote: > > all, Alexander, > > > > bingo, "ip route" does the job ( sorry, was not aware about that > > difference). > > Thanx > > > Message only sent to me, please re-post to list so that they can see > your resolution of the problem. > > > Enjoy the day > > BR > > Ar > > > > [root@localhost ~]# ip route > > 10.10.10.0/24 dev enp0s3 proto bird scope link metric 10 > > 10.10.10.0/24 dev enp0s3 proto kernel scope link src 10.10.10.1 > > metric 100 > > 50.50.50.0/24 proto bird metric 10 > > nexthop via 10.10.10.2 dev enp0s3 weight 11 > > nexthop via 10.10.10.3 dev enp0s3 weight 11 > > 192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1 > > linkdown > > 192.168.122.0/24 via 10.10.10.3 dev enp0s3 proto bird metric 10 > > [root@localhost ~]# > > > > Am Di., 11. Juni 2019 um 14:56 Uhr schrieb Arno O <[email protected] > > >: > > > Dear Kenth, > > > > > > there is no such error trace in syslog > > > > > > (bird log setting: > > > # Configure logging > > > log syslog all;) > > > > > > How to proceed? > > > > > > BR > > > Ar > > > > > > > > > Am Di., 11. Juni 2019 um 14:36 Uhr schrieb Kenth Eriksson < > > > [email protected]>: > > > > On Tue, 2019-06-11 at 14:18 +0200, Arno O wrote: > > > > > CAUTION: This email originated from outside of the > > > > organization. Do > > > > > not click links or open attachments unless you recognize the > > > > sender > > > > > and know the content is safe. > > > > > > > > > > This topic was already discussed around March 1st 2019, > > > > without > > > > > having received a clear outcome. > > > > > > > > > > Now, dealing with ECMP with OSPF in Bird 2.04 on Fedora30, I > > > > run in > > > > > same problems: > > > > > > > > > > -> multiple next hops to same destination (50.50.50.0/24) are > > > > in the > > > > > route table of bird: > > > > > bird> sho route > > > > > Table master4: > > > > > 10.10.10.0/24 unicast [OIPv46 13:39:16.979] I (150/10) > > > > > [10.10.10.1] > > > > > dev enp0s3 > > > > > 192.168.122.0/24 unicast [OIPv46 13:46:18.979] E2 > > > > (150/10/10000) > > > > > [10.10.10.3] > > > > > via 10.10.10.3 on enp0s3 > > > > > 50.50.50.0/24 unicast [OIPv46 13:46:18.979] E2 > > > > (150/10/100) > > > > > [10.10.10.3] > > > > > via 10.10.10.2 on enp0s3 weight 11 > > > > > via 10.10.10.3 on enp0s3 weight 11 > > > > > bird> > > > > > [root@localhost ~]# > > > > > > > > > > but kernel route table looks unexpectedly different: > > > > > root@localhost ~]# netstat -rn > > > > > Kernel IP routing table > > > > > Destination Gateway Genmask Flags MSS > > > > Window > > > > > irtt Iface > > > > > 10.10.10.0 0.0.0.0 255.255.255.0 U 0 0 > > > > > > > > > 0 enp0s3 > > > > > 50.50.50.0 10.10.10.2 255.255.255.0 UG 0 0 > > > > > > > > > 0 enp0s3 > > > > > 192.168.122.0 10.10.10.3 255.255.255.0 UG 0 0 > > > > > > > > > 0 enp0s3 > > > > > [root@localhost ~]# > > > > > > > > > Do you see them if you do 'ip route'? I think iproute2 is better > > > > at > > > > displaying multipath routes. > > > > > > > > > Kernel looks configured correctly > > > > (CONFIG_IP_ROUTE_MULTIPATH=y), > > > > > etc.etc. > > > > > > > > > If the kernel is mis-configured, I believe you get an error trace > > > > in > > > > the bird log. Something along the following lines; > > > > > > > > <WARN> Netlink: Invalid argument > > > > > > > > I tested it on 2.0.4 and kernel 4.14.92+ and that seems to work. > > > > > > > > > > > > > > Bird config on ECMPed bird router: > > > > > protocol ospf OIPv46 { > > > > > tick 2; > > > > > rfc1583compat yes; > > > > > ecmp yes limit 8; > > > > > merge external yes; > > > > > ipv4 { > > > > > import all; > > > > > export all; > > > > > }; > > > > > area 0 { > > > > > interface "enp0*" { > > > > > # type broadcast; # Detected by default > > > > > cost 10; # Interface metric > > > > > ecmp weight 11; > > > > > > > > > > What is missing either in the bird-config or the kernel part? > > > > > > > > > > Thx > > > > > > > > > > BR > > > > > Ar > > > > > >
