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Joining two separate environments with different vMotion networks

Posted on 2013-11-06
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Last Modified: 2013-11-19
I am upgrading my ESXi 5.1 cluster from rack servers to blades.
My rack servers are on the following subnet:

192.168.9.0/24

The blade servers (Cisco UCS) is on the following subnet:

172.20.0.0/16

My issue is that I am attempting to host vMotion VM's to the new cluster and it cannot find/see the network and fails at 14%. vMotion IP's are on the same respective subnets as the hosts.

I read this article from VMWare but it didn't help me.

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2052092

I attempt to change the vMotion IP's on the blades to match the same subnet and vCenter rejects the change and reverts back to original IP.

How can I best approach this and successfully move these VM's?
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Question by:James H
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13 Comments
 
LVL 124
ID: 39628129
Ensure that you have a VMKernel Interface on the same network and subnet, and then select that as your vMotion interface.
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LVL 17

Author Comment

by:James H
ID: 39628438
That's my problem. I try to add/change a VMk interface on the blades and it will error out and roll back changes. Storage is visible to all servers and there is new storage for blade servers, not an issue as Storage vMotion works flawlessly.

The only interfaces I can change the VMk on are the rack servers. I did attempt the change the vMotion IP's to match the blades but it still failed at 14 %.
0
 
LVL 124
ID: 39628750
what is the error?
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LVL 20

Expert Comment

by:compdigit44
ID: 39636299
What build of ESXi 5.1 are you using? Are you changing the IP via GUI or commad-line?
0
 
LVL 17

Author Comment

by:James H
ID: 39638710
I am changing the IP via the GUI.
I verified that all addresses are reachable on the network side and ensured they are on the correct VLAN. It's looks to me like the vMotion wants to take place over the management network even though that is not selected as vMotion.
0
 
LVL 20

Expert Comment

by:compdigit44
ID: 39640164
As hanccocka mention previously, can you please upload the error you receive when changing the IP. Also, please upload any error in the vcenter log files and image of your vswitch / vds layout
0
 
LVL 17

Author Comment

by:James H
ID: 39641998
The error just states losing connectivity to host and reverts changes.
Here are the vswitch settings.
rack-host-vswitch.JPG
blade-vswitch.JPG
0
 
LVL 20

Expert Comment

by:compdigit44
ID: 39642387
Hum...have you talked to your networking departement to see if they would be able to allow the  port nic's 4 & 5 on the blade at plugged into access to the same vLAN your racks server is plugged into...
0
 
LVL 17

Author Comment

by:James H
ID: 39642567
Remember, the UCS NIC's are all virtual, so I did the reverse. I changed the VLAN's and IP's on the rack servers, verified the addresses are visible and it still fails at 14%.
My only other option at this point is to change the management IP of the rack server and see if that helps.
0
 
LVL 20

Expert Comment

by:compdigit44
ID: 39642643
Let me know how you make out... Good Luck
0
 
LVL 17

Accepted Solution

by:
James H earned 0 total points
ID: 39648312
I was able to get this working. For some reason the vMotion NIC's on the UCS were not pinned correctly and thus no traffic was passing through. Once I fixed the mess the original installer made I was able to get this working.
0
 
LVL 20

Expert Comment

by:compdigit44
ID: 39648531
Very interesting and good to know..
0
 
LVL 17

Author Closing Comment

by:James H
ID: 39658836
This was the solution to my problem.
0

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