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Vmware servers network conflicting

StratfrordDC
StratfrordDC asked
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We have 2 vmware esxi5.0 servers that are having a network conflict.
I have migrated a virtual server from one physical VM to another using the converter stand alone client. This has an ip address of xxx.xxx.x.206. This server is turned of in the virtual environment.
The two physical servers have different static ip addresses of xxx.xxx.x.214 and xxx.xxx.x.217.
Both are conflicting and when both are turned on one will lose network connectivity.
Also if I leave both turned on after roughly 10 minutes one goes down and the other takes over. 10 minutes later the other goes down and the other takes over.

Any suggestions would be greatly appreciated as i'm a little lost on this one
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Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
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Commented:
have you removed all hidden devices?

you have checked you do not have identical mac addresses it does happen!

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Commented:
It appears the servers on both physical VM servers all remain operational on the network, as I can RDP and ping them. Its the console IP addresses that keep dropping out and conflicting between each other.
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
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Commented:
esxi host management ip address?

Author

Commented:
correct. I've given them static IP's of xxx.xxx.x.214 and xxx.xxx.x.217. Both started conflicting after I moved a VM server from the .217 server to .214 server. every 10-15 minutes one comes back on the network and the other goes down.
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
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Commented:
change both management IP addresses to something different.

Author

Commented:
Just tried changing .217 to .212 and changed .214 to .211 however they still seem to be fighting. one comes up for a minute now and the goes down and then they swap again.
Any other ideas greatly appreciated.
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Commented:
the mac addresses are different on your physical hosts and your vms?
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
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Commented:
if you turn off the VM you moved does it stop?

Author

Commented:
No it's doesn't which makes it even more confusing.
I have the VM backed up so am thinking of deleting it.

Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
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Commented:
check MAC addresses, could be a duplicate, check arp cache on switches against physical ports.
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
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Commented:
also for testing change the ip addresses of servers to a private range 192.168.0.1 for example

Author

Commented:
Thanks for your help.
I changed 2 things but i'm not sure which one fixed it.
I logged into the physical console and changed the port from vnic0 to vnic1.
I then created a new vsphere standard switch called vswitch1 and directed the server I moved over originally to specifically use that and directed everything else to use vswitch0.
The arp cahe of the switch also cleared out 10 records within the space of 30 minutes.

I can't be sure which one resolved it.
Thanks for your help

Author

Commented:
Not sure which solution resolved the issue

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