Solved

NLB, ADFS, DNS issues?

Posted on 2014-12-21
1
235 Views
Last Modified: 2015-01-05
Hello Experts,

I have a client that after site migration, users unable to be replicated to O365, password synchronization failed . IT team unable to ping VIP of Windows network load balancer.

As workaround, a DNS record pointing to a single ADFS server instead of VIP of WLB was created in the DNS zone . After creating a DNS record, email and dirsync was reestablished.  If we revert changes to original state [ADFS servers in a nlb using VIP address] email, users and password synchronization stops

Company runs ADFS server  [2008 R2 servers] and Exchange Hybrid, Windows 2008 Forest/domain fuctional level

Any ideas on why we are unable to ping VIP of Windows network load balancer? ADFS servers are in a DMZ network, before migration of site everything was ok, they did not change any IPs or any settings on the network load balancer, and the WIndows NLB is setup for multicast on the 2 nodes of the NLB

if the NLB cluster of ADFS was deployed is down, email, and users/password sync will stop, but if anything changed, why it stopped?

How can we fix this issue? do you believe is a DNS, ADFS, or office 365 issue or Windows network load balancer issue?

Should we upgrade ADFS servers to 2012 R2 to fix the Windows network load balancer issue[ if determined is NLB root cause]
Please, provide instructions step-by-step to fix this issue
0
Comment
Question by:Jerry Seinfield
[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
1 Comment
 
LVL 28

Accepted Solution

by:
Dan McFadden earned 500 total points
ID: 40512589
Before any upgrading, my first instinct is to verify if there is a firewall blocking access to the VIP.  No ping, no sync, no access reeks of a security device not configured for a new service point.

Dan
0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

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

Here's a look at newsworthy articles and community happenings during the last month.
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 show how to configure a new Backup Exec 2012 server and move an existing database to that server with the use of the BEUtility. Install Backup Exec 2012 on the new server and apply all of the latest hotfixes and service packs. The…
There are cases when e.g. an IT administrator wants to have full access and view into selected mailboxes on Exchange server, directly from his own email account in Outlook or Outlook Web Access. This proves useful when for example administrator want…

688 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