vdx 6740 firmware upgrade fails - ISSU is not supported to the target firmware version

[Pawel_Eljasz]

hi gents,

I have two vdx in logical chassis. I'm trying to upgrade 7.2.0a1 to nos7.3.0aa but process fails.
Is this upgrade path not supported or I'm having a problem?
I'm hoping non-disruptive upgrade is possible with ISSU or some other way.

code:

bottom# firmware download logical-chassis ftp host 10.214.234.2 user anonymous directory / rbridge-id 1-2
Password: *********

Following is the result of the sanity check on the specified nodes.

Rbridge-id    Sanity Result           Current Version               
--------------------------------------------------------------
1             Failed *                7.2.0a1
2             Failed *                7.2.0a1

* Details:
Rbridge-id 1:

ISSU is not supported to the target firmware version. Please specify coldboot option in the command-line for download.

The preinstall script failed.

Rbridge-id 2:

ISSU is not supported to the target firmware version. Please specify coldboot option in the command-line for download.

The preinstall script failed.

Firmware download failed. Please address the failures and then initiate firmware download again.

[Yulia_Abitbul]

Please re-apply configuration from back up
To understand why cluster lost configuration after upgrade you need to collect Support files from both switches and open case to Extreme GTAC.

Did you see any errors while upgrade?

[Yulia_Abitbul]

Both of them upgraded? But you lost config?

[Pawel_Eljasz]

Slot Name Primary/Secondary Versions Status
---------------------------------------------------------------------------
SW/0 NOS 7.3.0aa ACTIVE*
7.3.0aa
SW/1 NOS 7.3.0aa STANDBY
7.3.0aa

[Pawel_Eljasz]

Both switches show online status:

Rbridge-Id WWN Management IP VCS Status Fabric Status HostName
--------------------------------------------------------------------------------------------------------------
1 >10:00:C4:F5:7C:93 10.214.234.95 Online Online sw0
2 10:00:C4:F5:7C:93* 10.214.234.91 Online Online sw0

[Yulia_Abitbul]

what "show vcs" tells you? from RB2?