В письме от 6 декабря 2013 12:46:48 пользователь Martin Kraus написал:
> > I don't think there is. cisco has a bgp multipath but that basically works > only if you have two uplinks to the same provider as it multipaths only > routes that have nearly all the attributes the same (pref,as path,...). Moreover, having enabled this on cisco with "bgp bestpath as-path multipath- relax" (hidden in IOS) without completely understanding traffic paths could lead traffic reordering and other problems, as path within AS in two upstreams usually differ. Altough by default cisco do per flow traffic balance (src+dst ip...), which lowers problem. As for function, describing "bestpath" selection algo within BIRD by distributing some prefix lengths across uplinks, this could improve sharing, but this gives no real hint for data plane to reach ~50/50%. BTW: why not use just static default routes, which is supported in BIRD for multipath load sharing by Linux kernel? In this case all load sharing job will be put to ECMP implementation in Linux kernel (which is good enough as for me). > > mk -- SP5474-RIPE Sergey Popovich