Solved

teaming NICs, Virtual Switch/adapter in Windows 2012

Posted on 2013-06-08
2
792 Views
Last Modified: 2013-06-10
I initially created one Hypver-V guest in my windows 2012. But by that time, I just had to make it work asap, so I have been ignoring wrong settings that  I have to adjust now.

this server HP DL380 has 4 NICs. I created a team with 3 and left 1 for emergency access.

Ethernet#1, #2, #3 in Team - static IP 10.10.10.25
Ethernet#4 -dynamic (now assigned 10.10.10.205)

Then I created a hyver-v guest. I created virtual switch with 'external' to allow virtual guest to connect to physical network. (screenshots for these settings attached).

Then I assigned static IP to the guest,10.10.10.170

Now the problem occures in DNS. The host server(10.10.10.25) shows NetBT error telling below and when I looked at DNS, Forward Zone has only one entry for the server and reverse zone has two entries;

Event 4319

"A duplicate name has been detected on the TCP network.  The IP address of the computer that sent the message is in the data. Use nbtstat -n in a command window to see which name is in the Conflict state."


DNS Forward Zone:

FS1 -  10.10.10.205

DNS Reverse Zone:
10.10.10.205 - FS
10.10.10.25 - FS

Since 10.10.10.205 on the server is a single NIC connection with DHCP, I don't want traffic  to go to that, but it seems like DNS thinks it's the primary connection. Also, I'm not sure the hyper-v guest on the server is even using the teamed connection or the single connection. How do I resolve the error on the server and make sure DNS is properly configured for this environment and what to do make sure all traffic goes through the teamed NICs to take advantage of bandwidth pool?
0
Comment
Question by:crcsupport
2 Comments
 
LVL 21

Accepted Solution

by:
eeRoot earned 500 total points
Comment Utility
Delete the incorrect DNS entries, you may have to do this on multiple DNS servers.  Then use the "ipconfig /flushdns" and "ipconfig /registerdns" to refresh DNS on machines getting this error.
0
 
LVL 1

Author Comment

by:crcsupport
Comment Utility
I already have done that, but it happens again. The problem is FS1 has two IP addresses, one for Teamed network inteface with 3 NICs(10.10.10.25) and one for single NIC(10.10.10.205).

I rather think it's because I configured Hyper-v virtual switch incorrectly. What's the proper way to configure virtual switch and how to assign IP address for virtual host/guest, virtual switch, teamed NIC, and the single NIC(management)?
0

Featured Post

What Is Threat Intelligence?

Threat intelligence is often discussed, but rarely understood. Starting with a precise definition, along with clear business goals, is essential.

Join & Write a Comment

Suggested Solutions

Title # Comments Views Activity
Eigrp Router 5 44
data center consolidation 8 62
Upgrade View 5.1.2 to Horizon 7 3 15
stacking switches 2 19
OfficeMate Freezes on login or does not load after login credentials are input.
A procedure for exporting installed hotfix details of remote computers using powershell
In this Micro Tutorial viewers will learn how to restore their server from Bare Metal Backup image created with Windows Server Backup feature. As an example Windows 2012R2 is used.
How to install and configure Citrix XenApp 6.5 - Part 1. In this video tutorial we have explained step by step installation of Citrix XenApp 6.5 Server on Windows Server 2008 R2 is explained in this video. We have explained the difference between…

762 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

Need Help in Real-Time?

Connect with top rated Experts

10 Experts available now in Live!

Get 1:1 Help Now