Best Configuration for Servers with Multi-Homed Network Adapters

Posted on 2011-03-21
Last Modified: 2012-05-11
I am looking for the best configuration practice for a Windows Storage Server 2003 with two network adapters, each with two network connections (4 connections total). Currently one adapter's connections are used for virtual machines and the other for the physical machine's connection to the network. Because the physical server NIC has two physical connections to the same network (same subnet, gateway, etc.. different IPs of course) the Windows System log constantly reports NetBT errors about a duplicate network name. I do see, however, a large amount of traffic on both connections. Should one of the connections be disabled, is there another best configuration, or should I just ignore the NetBT errors?
Question by:GISCOOBY
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
  • 2

Accepted Solution

cavp76 earned 500 total points
ID: 35180798
Team two ports (and make sure their respective ports in the switch are configured), that will get rid of the errors in the event viewer; leave the one unused unplugged...


Author Comment

ID: 35180813
cavp76, does the teaming performance outweigh the TCP/IP offloading gain on CPU cycles?

Expert Comment

ID: 35181210
Usually two-port NICs have a TCP offloading engine incorporated, as they are targeted for server use; so there's no performance penalty (or minimal in any case), you would gain throughput (as it's a storage server).


Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Auditing domain account logon attempt, failure, lockout 2 165
ticket bloat 3 70
Network setup between buildings 4 60
SSIS Paramater on start 2 27
There are times where you would like to have access to information that is only available from a different network. This network could be down the hall, or across country. If each of the network sites have access to the internet, you can create a ne…
Creating an OSPF network that automatically (dynamically) reroutes network traffic over other connections to prevent network downtime.
After creating this article (, I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (, I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

733 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