CMCNE 12.0.1 - switch replacement

Hi there

Taking literally what the messages are directing you to do and assuming there is no other issues you can find a procedure to change the seed switch in the CMCNE 12.0.1 user guide (link below on EMC service center) on page 245.

https://support.emc.com/docu51038_Connectrix_Manager_Converged_Network_Edition_Professional,_Professional_Plus,_and_Enterprise_12.0.1_User_Guide.pdf?language=en_US

Looking at your scenario: it’s a single switch fabric so the single switch is the fabric seed switch, after replacing the switch the hard coded switch WWN will be changed so I believe following the change seed switch procedure will help.

Also mentioned in step 5 of the procedure `the fabric is deleted from the Management application without purging historical data, and the same fabric is rediscovered with the new seed switch` Which seems to be the end goal.

Let me know if this helps.

Hi,

thanks for your advice. The button is available but the following error message occures.

So I think because it`s a single switch fabric, no other switch is for seed usuable/ found.

Any other idea?

Ill look into this further and reply back...

I know you get that message if you select a virtual fabric and hit the seed switch button in the discover fabrics window.

Ill check further and get back to you.

THX for your reply.

Just as a note the switch is a Connectrix DS300. Virtual fabric is not activated.

What firmware is on the switch?

This is what I was starting to suspect.

One of the criteria on setting the seed switch is it must have the latest firmware and changing the seed switch assumes there is more than 1 switch in the fabric if you were just replacing the switch as part of a hardware refresh you would do something like:

Upgrade the new switch to match or better the FW of the old switch, connect the new switch to the old, migrate the connections from old to new switch then change the seed switch using the previous procedure I directed you to.

In your case because the old switch failed so your fabric was down, the old switch was removed and the new switch put in its place CMCNE I believe is holding info from the old switch that is stopping the new switch from being eligible to now be the seed switch.

From the guide:

If, during the seed switch change, the fabric is deleted, but the rediscovery operation fails (for example, if the new seed switch become s unreachable using HTTP), then you must rediscover the fabric again. If you rediscover the fabric using a switch that was present in the fabric before the change seed switch operation was performed, then all of the historical and configuration data is restored to the rediscovered fabric. If you rediscover the fabric using a switch that was added to the fabric after the fabric was deleted, then the historical and configuration data is lost.

Your old switch is gone and there is no other switch in the fab from which historical data can be pulled.

In order to make the new switch seed I believe you will have to purge the fabric from CMCNE are do a rediscovery because it seems that the historical info you are trying to save is actually blocking the new switch from being the seed.

What CMCNE information are you trying to retain? There are back up options in CMCNE if you look the user guide I provided I am guessing it is CMCNE server information you are trying to safe? Because config info unless it was backed before it failed is gone now anyway.

Thanks

Allan

The replaced switch and the replacement switch had the 6.3.2b. After replacement it was updated to 6.4.3e.

The old was broken during the firmware update and then replaced.

Hi,

I especially want to save the historical datacollection for performance data.