vsphere cannot contact the specified host

Posted on 2012-03-19
Last Modified: 2012-04-01
I have a vmware 4.1 managed by vsphere 4.1 several of my host's show disconnected when trying to reconnect I get a specified host not responding. I removed one from inventory but no luck adding that host back. Each of the host's can be managed by the vsphere client software just fine so I am assuming that it is a vcenter issue any help would be appreciated.
Question by:cclanton
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LVL 120
ID: 37738176
restart network management agents on the host.

restart vCenter Server service on the vCenter server.
LVL 30

Expert Comment

ID: 37738217
do you see a green or maybe amber led (activety) on the affected host

is the host a blade server

Author Comment

ID: 37738273
Sorry should have included that the management service had been restarted on all machines so no joy on that avenue.
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LVL 120
ID: 37738303
Check you have no storage issues, no iSCSI or FC LUNs added or removed, this can cause Host issues.

Missing datastores.

Author Comment

ID: 37738329
The host that I slicked does not show correct storage but the other two which I am trying to reconnect have identical storage/networking showing in the local host each is currently running vm's which are operating correctly.
LVL 120
ID: 37738343
no path or storage changes on storage network, and no one has issued a Rescan Storage or Refresh datastores

Author Comment

ID: 37738358
No storage changes but I have probably run a rescan storage since this began.
LVL 120
ID: 37738382
It's possible this issue is caused by storage changes, we can cause the issue you our experiencing.

Restart Hosts with issues.

Author Comment

ID: 37738386
One other piece of information I can add when trying to reconnect to the host's it gives me the same error if I use an incorrect password, like it's not even getting to the authenication point
LVL 120
ID: 37738403
Yes, Host is broke, we've seen this alot, and VMware still seem to have not fixed this issue, if storage changes, and cause the host to become non-reponsive.

Author Comment

ID: 37738425
Is there a resolution to this situation ?
LVL 120
ID: 37738470
Reboot host, raise Support Request with VMware Support, and request a fix.

You are not the only site that has experienced this issue, it it is storage related.

No update or patch that we are aware of.

Accepted Solution

cclanton earned 0 total points
ID: 37773995
Switch issue seeing multiple macs ID's comming from the physical nics. turned port security off fixed problem

Author Closing Comment

ID: 37792754
Solution presented itself after reboot of entire system and differnt VM's were visible.

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