We had this once before on an Intel GigE ethernet adapter.. The hacky fix was to leave a ping running continuously (mtr in this case) which solved the problem.
Sounds like a arp/mac learning issue-- I think it got fixed when we re-installed ESXi on that machine. -Shane On 20/02/2010, at 7:06 PM, Steven King wrote: > Have you applied the ESX patches. I don't run ESX, but ESXi, and there > was a firmware patch that addressed some networking issues on Linux > systems. Might give that a try if you have not already. > > On 2/19/10 3:52 PM, LEdouard Louis wrote: >> Has anyone experience problems using Intel 10 Gb NIC on VMware (AMD) ESX >> 4.0? >> >> >> >> Some VM's are experiencing intermittent network drop issues even though >> the actual VM is online. The VM are unable to ping out or respond to >> ping and sometime unable to ping VM-to-Vm on the same physical server. >> >> The problem is only on some VM's on the same ESX host. We move the vms >> to another ESX 4.0 with same Intel 10 GB card, the problem is resolve, >> but return days later with same VM at new location. >> >> >> >> The Intel 10 GB has VMDQ features was not sure if that is part of the >> problem. >> >> >> >> Thanks in advance >> >> --Louis >> >> > > -- > Steve King > > Network Engineer - Liquid Web, Inc. > Cisco Certified Network Associate > CompTIA Linux+ Certified Professional > CompTIA A+ Certified Professional > >