From experience, it’s not uncommon to not be able to connect to the KVM of a cisco ucs blade. Instead of seeing a Remote console screen, you’ll receive a “Connect failed” or “Request Shared Session” message, with no means of getting to the console.
Within the Service Profile, click on the Server Details tab. From there, click on Recover Server. Select “Reset CIMC (Server Controller)”. Choose Reset KVM Controller. This will kill existing KVM sessions and allow you to start a new session. Resetting the CIMC does not affect data traffic to/from the server NICs (ethernet and HBAs).
Another thing to check in Servers tab, General tab is the Management IP Address setting. If it’s configured to take an address from a pool, check the pool in the Admin tab, Management IP Pool, IP Addresses tab to see what IP’s exist in the range, and whats been assigned.
If a reset hasn’t worked, In the Servers tab, General tab, Management IP Address section, change the IP address from Pooled to Static. Use an IP address from the other end of the range in the pool. Click Save Changes, and try connecting to the KVM again.
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Very late response to Mohamed. You are hitting some variation of a well known defect Bug ID: CSCun88303. The workaround requires powering down the server and physically removing power from the server to “de-energize” the CIMC OOB NIC. That is the only way. The solution is upgrading to a firmware version in which this defect is resolved.
I’m certain that CIMC resets do not impact VM application level traffic on UCS C Series servers – and I was wanted to get some confirmation about resetting the CIMC interface on a UCS B Series blade. It is an OOB management interface and therefore should impact VM application traffic but I wanted to get confirmation of that.
I have UCS C220 M3S Server. Iam able to ping the CIMC IP Address.
But am unable to get the Web Gui or not even able to SSH the CIMC IPAddress.
I do not want to reboot the whole Server/ESXi to reset CIMC from Physical KVM .
Is there a way that i can reboot the CIMC only from Vmware-CLI interface ?
The Cisco UCS hardware virtualisation layer is beneath the VMWare layer. I’ve not worked with UCS for 4 years now, so it may have integrated more with VMWare as its developed, but I doubt it.
Restarting your ESXi blade will possibly not reset the CIMC, as you’d be rebooting a layer above the layer that you cannot connect to – and you should definitely not have to do that anyway.
Make sure you’ve read the entire article for suggestions to problems, in particular the last two paragraphs.
I’m sorry I am not familiar with the server model you describe, so cannot help any more.
If you do find a work around it, I’d really appreciate a follow up comment. Good luck Mohamed.
I have a problem with my kvm UCS B220-3m when I try to lunch the Kvm, it doesn´t show anything. What could be the problem thanks..
has it ever displayed? if so, i’d reset it, if not there’s some “obvious” pre reqs like having java enabled and your browser type and version and whether you even see it over IP.
This was the fix that got my UCS up and running. Thanks so much for posting.
Great! Glad it helped you out.