[isalist] Re: Multi-site NLB with TMG 2010
- From: Han Valk <han.valk@xxxxxxxxxxxxxxx>
- To: "isalist@xxxxxxxxxxxxx" <isalist@xxxxxxxxxxxxx>
- Date: Wed, 27 Apr 2011 09:11:04 +0000
Site redundancy. Customer has 2 datacenters. Would be nice that in case of an
outage the other takes over.
From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On
Behalf Of Jerry Young
Sent: Wednesday, 20 April, 2011 17:39
To: isalist@xxxxxxxxxxxxx
Subject: [isalist] Re: Multi-site NLB with TMG 2010
What would you be trying to load balance across the two sites, anyway?
If it's access to web services of some kind, you're better bet would be to put
a hardware load balancer that supports multi-site load balancing (like F5 -
Global Traffic Manager) in front of TMG at each site.
On Wed, Apr 20, 2011 at 10:03 AM, Jim Harrison
<Jim@xxxxxxxxxxxx<mailto:Jim@xxxxxxxxxxxx>> wrote:
http://www.ISAserver.org<http://www.isaserver.org/>
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Han,
The short answer is "not if they're separated by a router".
NLB (not ISA) requires that the cluster nodes operate in the same Ethernet
broadcast domain.
In general, this is a bad idea; there are too many things that can break the
communication (if it works in the first place), resulting in a broken cluster.
-----Original Message-----
From: isalist-bounce@xxxxxxxxxxxxx<mailto:isalist-bounce@xxxxxxxxxxxxx>
[mailto:isalist-bounce@xxxxxxxxxxxxx<mailto:isalist-bounce@xxxxxxxxxxxxx>] On
Behalf Of Han Valk
Sent: Wednesday, April 20, 2011 3:45 AM
To: isalist@xxxxxxxxxxxxx<mailto:isalist@xxxxxxxxxxxxx>
Subject: [isalist] Multi-site NLB with TMG 2010
http://www.ISAserver.org<http://www.isaserver.org/>
-------------------------------------------------------
Hi list,
Did some research on this subject but did not find a lot of useful information
only that is not a common configuration. Just to clarify, multi-site NLB in
this context means part of one NLB cluster in one datacenter and another part
in a second datacenter.
Is this possible?
What are the pitfalls?
Is it supported?
Regards,
Han Valk.
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--
Cordially yours,
Jerry G. Young II, CISSP
Microsoft Certified Systems Engineer
Young Consulting & Staffing Services Company - Owner
www.youngcss.com<http://www.youngcss.com/>
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