In the HyperV world, we have this thing called evil Broadcom nics. In
order to use them and HyperV we have to sacrifice interns to the gods,
and then disable rss/toe and the new thing with 2012 and later - disable
VMQ. And you have to do this not in the gui but in command line to make
it stick.
What brand is your nic card and is there anything similar in the vmware
world where certain nic cards are just horrific when it comes to behaving?
MS wants feedback on patching: http://tinyurl.com/patchingsurvey
On 6/11/2015 10:19 AM, Robb Whiting wrote:
Seems like a common problem… anyone have a definitive fix? Is it a
virtual hardware thing you think then?
I’ve never seen it happen in Linux. Except maybe CentOS but that’s
more of a picky ARP cache thing.
-Robb
*From:*[email protected]
[mailto:[email protected]] *On Behalf Of *David McSpadden
*Sent:* Thursday, June 11, 2015 10:16 AM
*To:* [email protected]
*Subject:* RE: [NTSysADM]
It happens on all OS’s for me and it is random.
I can reboot a box 6 times and it comes up.
Then at 3:00 am in the morning it reboots and the nic shows the
169.x.x.x address.
Disable and enable the nic and everything comes right back up.
We are using the VMX or E1000 drivers and still get the same random
results.
*From:*[email protected]
<mailto:[email protected]>
[mailto:[email protected]] *On Behalf Of *Todd Lemmiksoo
*Sent:* Thursday, June 11, 2015 1:13 PM
*To:* [email protected] <mailto:[email protected]>
*Subject:* Re: [NTSysADM]
We the same problem with our 2008 servers. There is a MS fix/patch
that sometimes fixes the nic. Else we just disable and reable the nic.
We use the vmx3net nic and vmtools are not always up-to-date. It is
very hard for us to get down time just to update vmtools.
Todd Lemmiksoo
On Jun 11, 2015 1:00 PM, "Jack Kramer" <[email protected]
<mailto:[email protected]>> wrote:
What vNICs are you using? (E10000 or vmxnet3?) Tools up to date?
vSwitch settings? (Disabling MAC changes, promiscuous mode, etc?)
On Jun 11, 2015, at 12:51 PM, Robb Whiting <[email protected]
<mailto:[email protected]>> wrote:
Hello Everyone,
I have an annoying problem that’s been vexing us for months now.
All our servers are virtualized with static IPs running on VMware
hypervisors.
The servers that have connections to more than 1 ip sometimes
drop their connection.
Other machines connected to the same network don’t lose their
connection so I don’t think it’s the link between the hypervisor
and the switch. It appears to be a windows problem.
Anyone else have servers running Windows 2k12 R2 that are
connected to multiple networks that somehow lose connection
randomly from time to time.
If we disable and reenable the NIC then they come back up but
they really shouldn’t go down at all.
Ideas?
-Robb
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