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ISA2006 EE NLB design and setup question

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ISA2006 EE NLB design and setup question - 19.Jun.2007 8:10:57 AM   


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Joined: 19.Jun.2007
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Hi all,

I'm currently working on an ISA2006 EE array implementation with NLB so we are able to load-balance traffic and have some kind of fault tolerance.
Our 2 ISA servers are both domain members. The domain controllers are in one of the subnets that have to be load-balanced. Since this is not recommended by MS, I tried to use a separate NIC for intraarray-communication. I installed the first ISA-server with local CSS and changed the NIC used for intraarray communication to a separate one. I also changed DNS entries to point to the ip of the new NIC. Furthermore, I added the IP (of the NIC used for intraaarray c.) of the second ISA to the list of allowd replication hosts.
When I try to install the second ISA, there is an authentication issue while connecting to the CSS of the first ISA. I suppose this is caused by using a different NIC for intraarray c. than the one which is connected to the subnet where the domain controllers are.
I also added a rule on the first ISA that allows the first ISA to "talk" to the domain controllers but still no success.

I'm pretty new to using ISA in a cluster environment and I'm not sure where I've made the error or if there is some general fault in the  design so I would be very thankful if someone with experience could give me some hints.

Here is a short overview what I try to achieve:

- separate 6 networks from each other, one of them is the internal network where the domain controllers reside.
- use load-balancing for all of these networks
- if possible, put the CSS on the isa servers since we only have two hp dl380 (putting the CSS on a domain controller is an option and should be preferred as I could read in the topics here)

Thanks for any help.
Best regards,
Post #: 1

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