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NLB Exchange 2007 CAS Servers

Posted on 2011-10-13
Medium Priority
Last Modified: 2012-05-12
Hi All,

I have two Exchange 2007 SP1 CAS servers.

I have had to apply a hotfix to correct a .Net issue and want to test it.  How can I force my client to use CAS server #2 (as this is where the patch is applied)

I would like to avoid rebooting/pausing/stopping host #1 if possible.


(I am using Outlook 2010)

Question by:techmiss
  • 3
  • 2

Author Comment

ID: 36960991
Sorry, just to clarify, they are in a Network Load Balance setup.

LVL 49

Expert Comment

ID: 36961031
are you using windows load balancing ?

if so open the network load balancing manager right click on the host you want to use for test -> Control host -> suspend


Author Comment

ID: 36961058
Thanks I have done that (yes it is Windows Load Balancing)

When I check my Outlook logs it is still accessing the server I have suspended,

I can see results such as those attached, you can see that svr-exch07-cas1 is being accessed when I have suspended it...although this may not be for CAS related requests....

How can I confirm this?


<?xml version="1.0" encoding="utf-8"?>
<Autodiscover xmlns="http://schemas.microsoft.com/exchange/autodiscover/responseschema/2006">
  <Response xmlns="http://schemas.microsoft.com/exchange/autodiscover/outlook/responseschema/2006a">
      <DisplayName>firstname lastname</DisplayName>
      <LegacyDN>/o=IP Integration/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=firstnamek</LegacyDN>
        <ServerDN>/o=IP Integration/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Configuration/cn=Servers/cn=Exch07-MB</ServerDN>
        <MdbDN>/o=IP Integration/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Configuration/cn=Servers/cn=Exch07-MB/cn=Microsoft Private MDB</MdbDN>
          <OWAUrl AuthenticationMethod="Fba">https://outlook.mydomain.com/</OWAUrl>
          <OWAUrl AuthenticationMethod="Basic, Fba">https://exch07-fe/owa</OWAUrl>
7468  ----END XML----
7468	0x00766356	10/13/11 10:40:26	Autodiscover to http://svr-exch07-cas1/autodiscover/autodiscover.xml Succeeded (0x00000000)
7468	0x00766356	10/13/11 10:40:26	AUTODISCOVER GET SETTINGS END
7468	0x00766356	10/13/11 10:40:26	-----------------------------

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LVL 49

Accepted Solution

Akhater earned 2000 total points
ID: 36961062
then your setup is not correct to start with, all these should be pointing to a specific URL that is mapped to the NLB IP and not directly to the cas name

Expert Comment

ID: 36967331
turn off server 1 and after some minutes start it,NLB converges to Server #2

Author Closing Comment

ID: 36968781
I think there is indeed an issue with my setup that needs further investigation.

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