Hi, We have a cluster of 6 nodes pub, 2 standalone ccm, 2 (ccm+tftp) and 1MoH server.
when we move a phone from one device pool to another, the phone displays "Registration Rejected:Security Error"
I tried deleting the ITL files on the phones but still no luck. with 'show itl' command, we see that the 'System Administrator Security Token' and the 'TFTP' function ITL Record parameters twice with two different certificates in all the nodes.
On another working cluster, the ITL Records of System Administrator Security Token' and the 'TFTP' function can be seen only once.
any idea why this difference? The change in CUCM happened before this issue was that we changed the DSCP enterprise parameter and reset all the phones and restarted the CCM service on all the 4 nodes.
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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 ...