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Exchange CA/Hub Traffic

Posted on 2013-11-19
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Last Modified: 2014-01-15
We have 2 CAS/HUB servers, I mean each server has 2 roles as CAS and HUB, I would like to know if the traffic is load balanced.
Both CAS/Hub servers are connected to a Load balanced.

is there any command to run in order to find whether the traffic is load balanced?

Thank you
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Question by:jskfan
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johnniek earned 500 total points
ID: 39661453
There are many ways to load balance a CAS Array.

If you want to use software only this is a method I use.

Create a MAPI A record in your internal DNS infrastructure that resolves to the Virtual IP Address (VIP) of the CAS load balancing array.  T

The DNS entry, for example, could be outlook.yourshop.com

Configure your load balancing array to load balance the MAPI RPC ports:
        TCP 135
        UDP/TCP 6005-65535; or set static ports
 
Use the new-clientaccessarray cmdlet to create the CAS array object. in the Exchange-Management Shell Such as:

New-ClientAccessArray –Name “youshop CAS array” –Fqdn “outlook.yourshopcom” –Site “HOMEBASE”


You need to revisit any Exchange databases that were created before the CAS array was created and set the rpcclientaccessserver property to match the newly created CAS array. Such as:  

Set-MailboxDatabase DB1 -RpcClientAccessServer “outlook.youshop.com”
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Author Comment

by:jskfan
ID: 39665612
**I am not sure that CASarray is Load Balancer, at least for the inbound traffic.

** Well, how do you determine that there is a sort of Load balancing is taking effect (inbound,outbid).

for instance when I open or send an email, which Hub/CAS the email is going through or letting me read the email, is it the Hub/CAS1 or Hub/CAS2?
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Author Closing Comment

by:jskfan
ID: 39784055
Thanks
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