?
Solved

Win 2k8R2 Multicast NLB not resolving to the online node when one node is off ?

Posted on 2011-09-23
6
Medium Priority
?
489 Views
Last Modified: 2012-05-12
Hi All,

I have created Multicast NLB on my 2x stand alone Windows Server 2008 Enterprise R2 SP1 VMs according to the following guides (on top of ESXi 4.1u1)

From Windows Guest OS level: http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1006558
and
From Networking level: http://kb.vmware.com/selfservice/microsites/search.do?cmd=displayKC&docType=kc&docTypeID=DT_KB_1_1&externalId=1006525

AppClu01 --> Clustername A Record
ServerProd1 --> Node 1
ServerProd2 --> Node 2

However, when one of the node is turned off, the web application that is accessed using http://AppClu01 is inaccessible ?

Any idea to troubleshoot this issue would be greatly appreciated.

Thanks.
0
Comment
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 3
6 Comments
 
LVL 123

Assisted Solution

by:Andrew Hancock (VMware vExpert / EE MVE^2)
Andrew Hancock (VMware vExpert / EE MVE^2) earned 2000 total points
ID: 36588081
Have you statically allocated the ARP MAC address of the Cluster in your switches?

This is a requirement, and it's what we've done in the past, to get this working, and make sure the NLB Cluster is Converged.
0
 
LVL 8

Author Comment

by:Senior IT System Engineer
ID: 36588108
Have you statically allocated the ARP MAC address of the Cluster in your switches?
Yes I have added in the switch (according to th network team) I suspect that the switch is load balanced as well so there is only one out of two that has been updated with the static MAC entry ?
0
 
LVL 123

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE^2) earned 2000 total points
ID: 36588139
Check with the Network Team, they have complete this, many a client and EE issue, we see, is because Static ARPs have not been done correctly, on every Port, Trunk, Uplink etc
0
Has Powershell sent you back into the Stone Age?

If managing Active Directory using Windows Powershell® is making you feel like you stepped back in time, you are not alone.  For nearly 20 years, AD admins around the world have used one tool for day-to-day AD management: Hyena. Discover why.

 
LVL 8

Author Comment

by:Senior IT System Engineer
ID: 36596695
my only workaround is to shutdown both nodes and then start them all up together at once, but this is defeats the purpose of having NLB multicast server ?
0
 
LVL 8

Author Comment

by:Senior IT System Engineer
ID: 36596698
after the shutdown on both servers, the cluster name is available to serve the request again normally.
0
 
LVL 123
ID: 36598429
Again, check static ARPs have been added to all switches.
0

Featured Post

New feature and membership benefit!

New feature! Upgrade and increase expert visibility of your issues with Priority Questions.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Always backup Domain, SYSVOL etc.using processes according to Microsoft Best Practices. This is meant as a disaster recovery process for small environments that did not implement backup processes and did not run a secondary domain controller that ne…
This article provides a convenient collection of links to Microsoft provided Security Patches for operating systems that have reached their End of Life support cycle. Included operating systems covered by this article are Windows XP,  Windows Server…
This tutorial will walk an individual through the process of configuring their Windows Server 2012 domain controller to synchronize its time with a trusted, external resource. Use Google, Bing, or other preferred search engine to locate trusted NTP …
This tutorial will show how to configure a single USB drive with a separate folder for each day of the week. This will allow each of the backups to be kept separate preventing the previous day’s backup from being overwritten. The USB drive must be s…
Suggested Courses

752 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question