On Wed, Oct 03, 2007 at 12:33:09PM -0400, Dean Anderson wrote: > No, that isn't anycast. A loadbalancer is actually a stateful NAT with > several different hosts behind the load balancing NAT. Those > loadbalancer devices you buy from cisco and other companies are > specialized NAT boxes. The servers behind the load balancer have > all have different ip addresses. The loadbalancer makes it appear they > servers share the same address through stateful address translation > techniques.
not all load balancers work the same. direct server return aka one-arm load balancing does no translation or rewrite of any headers (l3 or l4). all it does is make a switching decision based on health check and other weighting criteria. i'll leave the annals of IETF archives as sufficient documentation about how wrong you are about anycast. as for load balancers, just because some of them perform NAT in some configurations does not mean that load balancer = NAT. -- bill _______________________________________________ DNSOP mailing list [email protected] https://www1.ietf.org/mailman/listinfo/dnsop
