nanog mailing list archives

Re: LoadBalancing products: Foundry ServerIron


From: Stephen Stuart <stuart () mfnx net>
Date: Fri, 07 Jul 2000 11:47:24 -0700


Someone from the maker of BIND company for DNS came here, and he told us
that he's using OSPF to load balance the server, I don't know how he did it.
Unless he's using the small routers to do it for servers.

There are two servers that provide f.root-servers.net service; each
has the f.root-servers.net address configured as an alias on the
loopback interface. The servers and the two upstream routers run OSPF;
the servers each inject f.root-servers.net/32 into OSPF, and the
routers see two "offers" of f.root-servers.net/32 with equal cost. 
The routers do CEF per-destination load-splitting, which winds up
splitting the load roughly 60/40 between the two servers.

Stephen



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