Hi Doug,Are all the 2960X's part of the same power source (such as UPS, etc?)? Is there any chance that the 2960X's may have experienced a brief 1-3sec power toggle to trigger this know issue:https://tools.cisco.com/bugsearch/bug/CSCuu99972/?referrin...

Hi Rhydian,Sorry to hear about the problem you are facing. I spent some time checking through our internal Cisco TAC database and this is the 1st I have heard of 15.0(2a)EX5 not fixing the "hulc_sfp_iic_intf_read_eeprom sfp _index 1 yeti_iic_read_ret...

Hi Doug,If the 2960X switches were already running fine on 15.0(2a)EX5 prior to the 4507 connectivity issue, then this code should have prevented them from experiencing the uplink issue and ILET issue mentioned here:http://www.cisco.com/c/en/us/suppo...

Hi Burkes,Sorry about the trouble you have gone through due to this software issue. The workarounds were options while waiting for the code fix. Now that the fix is available in 15.0(2a)EX5 & 15.2(2)E2 an upgrade is the way to go. A one time hard boo...

Hi Nickolus,15.0(2a)Ex5 (and 15.2(2)E2) does have the fix but as mentioned in the link below a one time hard boot (physical power cycle by unplugging and plugging the power cable) may be required after the code is upgraded if the switch was in a fail...