On Mon, 16 Feb 2015 12:41:06 +0100, Klavs Klavsen <[email protected]> wrote:
> As I understand anycast and ECMP (and I only know guys who use it and > know what they are doing ;) - it needs to be two different routes (ie. > routers) that are active/active.. ie. multiple location.. but I guess > one could do it in the same datacenter as well.. > 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 -- Mariusz Gronczewski, Administrator Efigence S. A. ul. WoĊoska 9a, 02-583 Warszawa T: [+48] 22 380 13 13 F: [+48] 22 380 13 14 E: [email protected] <mailto:[email protected]>
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