> our setup(1 DC): > > * active-active ECMP > * 4 loadbalancers + bird OSPF > * 2 routers + OSPF > * IPs are on loopback interface, added and removed when haproxy service > starts/stops > * OSPF distributes routes to these IPs to routers > * routers route by source IP so same IP always lands on same > loadbalancer > > works pretty well ;) you just have to make sure that when you stop > haproxy (maintenance etc) you also down IPs that haproxy used so routers > stop sending traffic to that node
PathMTU will still be broken here, but you probably don't see complaints from IPv4-only users (since they have MSS clamping deployed) or IPv6 users with full MTU. Lukas
