Re: Multiple CAS, HUB, UM servers

On Wed, 7 Feb 2007 11:43:27 -0800, "Paul" <dont@xxxxxxxxx> wrote:

In a single site, if we have multiple CAS, HUB & UM servers, if/how is the
traffic load balanced between them?


UM traffic isn't going to be load balanced by Exchange because the SIP
gateway will point traffic to the box that manages the extensions.
http://markarnold.blogspot.com/2007/01/exchange-2007-when-to-nlb-and-when-not.html#links
and Neil's comment adds a little extra to the debate.

In short, it all depends on what you implemented. Sometimes you will
want to implement NLB, other times you won't need to because Exchange
does it for you. Neil explains about CAS and ISA, which is pretty
cute.
.

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