Solved

High percentage of dropped packets in ESXi 4

Posted on 2010-09-15
10
1,529 Views
Last Modified: 2012-05-10
I see high percentage of dropped packets for my VM. Why could this be happening. I even tried adjusting the recieve buffer with no luck. We are using the 1000v. Please help. Look at the pic below.. 66% omg!
drpx.PNG
0
Comment
Question by:VMwareLover
[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
  • 6
  • 4
10 Comments
 
LVL 28

Expert Comment

by:bgoering
ID: 33683660
Have you checked for a speed or duplex mismatch between the 1000v port and the vm in question?
0
 

Author Comment

by:VMwareLover
ID: 33683923
Yes, they are all at 1gb... its happening to almost all VMs in the envirnoment.
0
 
LVL 28

Expert Comment

by:bgoering
ID: 33684779
Take a look at http://www.ivobeerens.nl/?tag=vmware

The article concerns itself with IPv6 being enabled on Windows 2008 guests, and both disabling IPv6 (not a good idea in 2008) or changing the NIC type to vmxnet3 fix the problem.

If this doesn't work then more information is in order to troubleshoot the problem.

1. What guest OS types are involved (include 32/64 bit information)
2. What are the virtual NICs? E1000, flexible, vmxnet2, vmxnet3, etc.
3. Is vmware tools installed and current on all of the troublesome guests

Good Luck
0
Independent Software Vendors: 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!

 

Author Comment

by:VMwareLover
ID: 33685492
The ipv6 is enabled. However, I just disabled it and restarted the server but it still has the similar packet loss... %drptx is 0 as before...
I am running windows 2008 R2 (mostly)
e1000
and yes the tools are insatalled on all the VMs and are upto date.
0
 
LVL 28

Expert Comment

by:bgoering
ID: 33686204
I would probably change the NIC to vmxnet3. To do that you must delete the old NIC, then add a new NIC specifying vmxnet3.

It is best to leave IPv6 enabled on 2008 and 2008 R2 because some services don't behave properly without IPv6 to bind to (or so I have been led to believe) and it really shouldn't hurt anything.

The vmxnet3 NIC will often give considerably better network performance than the e1000
0
 

Author Comment

by:VMwareLover
ID: 33694473
Once I change the nic to vmxnet3, i see 0 drprx... thats good .. however, what are the drawbacks of using this vs e1000?
0
 
LVL 28

Expert Comment

by:bgoering
ID: 33695283
I don't know of any drawbacks - vmxnet3 supports everything E1000 does and is better "paravirtualized" so there is less overhead and better performance. It is generally recommended to switch to that.
0
 

Author Comment

by:VMwareLover
ID: 33695336
interesting! so are there any limitations to this? DRS fails, vMotion etc etc? Any funtionality that it takes away. I guess this cant be used on a FT enabled VM.
0
 
LVL 28

Expert Comment

by:bgoering
ID: 33695722
Absolutely - it can be used for all of the above
0
 
LVL 28

Accepted Solution

by:
bgoering earned 500 total points
ID: 33695728
I should say it CAN be used on FT vm
0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Veeam Backup & Replication has added a new integration – Veeam Backup for Microsoft Office 365.  In this blog, we will discuss how you can benefit from Office 365 email backup with the Veeam’s new product and try to shed some light on the needs and …
In this article, I will show you HOW TO: Create your first Windows Virtual Machine on a VMware vSphere Hypervisor 6.5 (ESXi 6.5) Host Server, the Windows OS we will install is Windows Server 2016.
Teach the user how to use create log bundles for vCenter Server or ESXi hosts Open vSphere Web Client: Generate vCenter Server and ESXi host log bundle:  Open vCenter Server Appliance Web Management interface and generate log bundle: Open vCenter Se…
This Micro Tutorial walks you through using a remote console to access a server and install ESXi 5.1. This example is showing remote access and installation using a Dell server. The hypervisor is the very first component of your virtual infrastructu…

705 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