Solved

Severe Network issues with Exchange 07 in ESXi

Posted on 2009-04-06
4
429 Views
Last Modified: 2012-05-06
I recently migrated our Exchange 2007 server from VMware server to a new server running 3i 3.5.0 build 12369, I used VMWare standalone converter on the vmdk. I am getting extreme latency on the NIC, even pinging other machines within the same host and vswitch. I have 5 other virtuals on this system and none have the same problem.

Running on a Proliant DL385, dual opteron 2.3 quads, 16gb ram. It's just a standalone ESXi with high med and low priority resource pools Exchange is alone in the high. There are 6 VMs total though one is powered off. Storage iscsi off a netapp fas270. iSCSI is in a seperate dedicated network and I have a dual port iSCSI HBA in the server. I have two physical NICs dedicated to the network the problematic vnic is in.

So far I've installed VMWare tools, uninstalled then reinstall again. Tried e1000 and enchanced vmxnet NICs.
0
Comment
Question by:CSGRP
[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
  • 2
4 Comments
 
LVL 9

Expert Comment

by:Veerappan Sundaram
ID: 24087024
Do you have any hidden NICs on this VM?
  1. You can check this if you open the properties of the NIC(s) and (do nothing) just Apply - if you get the warning that this IP address is already assigned to another NIC on this machine, then you have a hidden NIC.
  2. Use WMIC command to find the hidden device. If you have any NIC with very few metrics set and without deviceID then you have a hidden NIC.
  3. Try changing the default gateway on the current NIC and try to traceroute to another machine on a different network and check is it following the route you specified. If not, you have a hidden NIC.
You need to remove that first.
>>>>Veera.
0
 
LVL 7

Expert Comment

by:kumarnirmal
ID: 24087953
I suggest that you check your Speed and Duplex Configuration of the NICs connected to the vSwitch on the
Exchange Server Port Group. If its set to Auto Negotiate, please change them to manual and set the speed to Fast Ethernet or Gigabit Ethernet and speed to Full Duplex or Half Duplex as per your Network Architecture.
0
 

Author Comment

by:CSGRP
ID: 24088338
I do indeed have a hidden NIC.  As part of my initial troubleshooting process I removed the e1000 nic and added a vmxnet.  Is this:
http://www.nthelp.com/NT6/hiddennetworkcard.htm

The best way to delete it?  It needs a reboot so I need to wait til after hours.  Promising catch though.

kumarnirmal, I will try your suggestions as well.
0
 

Accepted Solution

by:
CSGRP earned 0 total points
ID: 24306763
I ended up building a new Exchange virtual on a different SAN and migrating everything to it.   I think our NetApp was just collapsing under the load.
0

Featured Post

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.

Question has a verified solution.

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

In-place Upgrading Dirsync to Azure AD Connect
This article is in regards to the Cisco QSFP-4SFP10G-CU1M cables, which are designed to uplink/downlink 40GB ports to 10GB SFP ports. I recently experienced this and found very little configuration documentation on how these are supposed to be confi…
This video shows how to quickly and easily add an email signature for all users on Exchange 2016. The resulting signature is applied on a server level by Exchange Online. The email signature template has been downloaded from: www.mail-signatures…
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seve…

632 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