Hi Ibrahim.lubis,   Try to disconnect the A1 switch and then reseat the A2 switch and see if it starts responding. It is not recommended to backflash the firmware to the previous version, and if you can get this switch working, you should update the other one to match. Is there a reason why you are not installing the latest switch firmware 5.1.1.7? [URL]   If the switch is still not accessible you may need to do a recovery on the switch, which is outlined on page 18 of the release notes document that is in the zip file in the link.
Hi I have dell e1000 with 2 iom blade m6220 no stacking, the cmc version is 3.21 , and both m6220 version is 2.2. 0.3 . Recently i tried to upgrade m6220 firmware to 3.1.2.5 to A2, but after restart i got error "A fabric mismatch detected on I/O module A2" . I try to racdm connect switch-2 but doest respond. Does this mean both m6220 must have the same version ? or can i remove IOM A1 and insert A2 and then hopefully i can remote A2 and do downgrade ?  Thx �
A fabric mismatch detected on I/O module ?