loss of DHCP traffic on VMs?

Andre Mamitzsch andre at mamitzsch.de
Fri Mar 28 17:44:38 UTC 2014

are you using ldap or just a config file ? We have seen such issues with LDAP and improperly set indexes.


Am 28.03.2014 um 18:39 schrieb Steve Clark <sclark at netwolves.com>:

> On 03/28/2014 01:23 PM, Joseph Bernard wrote:
>> We had an issue with DHCP yesterday which lead me to test UDP traffic from the VM we loaded on our VMware ESXi box.  I found that after around 25Mbps UDP starts to lose packets, and it gets worse and worse the fast you go.  I tried every virtual card type (e1000, VMXNET2, VMXNET3) with the same results.  I even tried on different servers, and they were also showing UDP packet loss.  Physical boxes on the same network showed no packet loss until I pushed their NICs to the limit (1Gbps).
>> Has anyone faced DCHP problems by using a VM because of this?  If so, were you able to fix it or did you just move back to a physical box?
>> Thanks,
>> Joseph B.
> Did you dedicate a nic to the virtual machine or are going thru a vswitch. We got dramatically better results by taking the nic out
> of the vswitch dedicating it to the virtual machine. This was in a packet capture environment.
> -- 
> Stephen Clark
> NetWolves Managed Services, LLC.
> Director of Technology
> Phone: 813-579-3200
> Fax: 813-882-0209
> Email: steve.clark at netwolves.com
> http://www.netwolves.com
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