I've migrated from CCM 4.0(2) to CCM 6.1(1a) successfully, but I've checked that when I list phones (Device > Phone), always the second listed phone appears unknown in status and IP Address, but if you click that phone you can check that is correctly registered and his information from that fields is on third line.
That error appears from that line to the last one, in other words, only the first listed phone is ok, and then the information from fields status and ip address of the 2nd phone is on 3rd phone, the info of the 3rd is on the 4th, and so goes on.
I've tried with a restart, but problem persist.
On release notes of 6.1(1a), appears a bug on CCM UI related but it's not the same, CSCsm09672 (Phone Devices List page can not sort). On that bug, the solution is an upgrade, but the problem is not the same.
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The short answer is that you don't.... That isn't entirely true while at
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Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...