Can not access to CIMC

[Mario C. G.]

Hi team,

I lost conectivity to CICM, I put this in Shared LOM Extended with active-active redundancy.

In the first days I can access to CIMC but after some time without chances, I lost this connection.

My question is:

I can access to CIMC without reload de UCS?

Thanks

[Walter Dey]

You talk about a C-series server managed with UCS ? if this is the case

- which UCS version

- FEX or direct Fabric interconnect

- Is your ext. management pool big enough

[Mario C. G.]

Hi Wdey,

My server is in standalone mode.

Thanks

[Keny Perez]

Hello,

Shared LOM extended is the fabric defaults, usually used when the server is integrated.  If this is a standalone server, can you move it to a dedicated configuration and monitor?

Have you tried to ping the CIMC IP address during the time you "cannot" access CIMC?  If it responds, what about SSH? Is it reachable through that?

-Kenny

[Mario C. G.]

Hi Kenny,

My server is in stanalone server, and not respond by ping.

I try connect back in Management port but this not respond.

I can change to dedicated port without reload my UCS Server?

Regards

Mario

[Keny Perez]

Mario,

Unfortunately, the CIMC mode can be changed without reload but only when you have access to CIMC.

What is the Server model and CIMC version you are running?

-Kenny

[Mario C. G.]

Hi Kenny, My ucs server is c240. I don't have the version.

[Keny Perez]

Any chance you can get the version and the SEL logs plus to see if something has been logged (of course that will require access to CIMC)

Be sure to confirm this is not a layer 1 issue, first.

-Kenny

[Mario C. G.]

Hi Kenny,

This not a issue in layer 1, because my server is operational, and I have access to VMware.

Because this, I don´t like restart my UCS. But If I do not have other option I need request a maintenance for reload.

Regards.

[Keny Perez]

OK, if you can access ESXi through vSphere Client/vCenter, can you check the status of the vmnic to which you have attached your Mgmt cable?  

If you have Shared LOM for active/active, is the upstream switch configure in port channel for both of the ports or both cables are going to different switches?

-Kenny

[Mario C. G.]

I do not have any connect to Management Port.

I have one stack switch with two switches, and i have my portchannel with four ports to one switch and other four ports with other switch. But the stack see only one switch.

I try connect one cable from the card operational and connect this on the Management port but this not respond the ping.

I attach some image for the vnic.

Thanks a lot for your help

[Keny Perez]

Could you please confirm that when you changed the cable to the dedicated mgmt port, you also rebooted the server, enter CIMC config (F8 during POST) and changed the NIC mode?  Otherwise, changing just the cable to the mgmt port makes no difference.

-Kenny

[Mario C. G.]

Hi Kenny,

I´m not reboot the server, I am sure that if I rebooted the server I can access to CIMC, My really question is about i can recovery my access to CIMC without rebooted the server.

But with your comments I see that I can not recover this access without reboot the server.

Thanks a lot for your comments

[Keny Perez]

Hi,

I understood that part. I was trying to move the management to another port and ask you to monitor if you lose access again as the ports might be having problems or maybe a problem with your management traffic somewhere down the road.

-Kenny