When I changed some phones' voice vlan for management purpose. Some phones took very long time (more than one day) to re-register to call manager but stayed at the stage of "Configuring IP". No operational vlan id displayed on Phone Network Config. The phone mac address appeared on the data vlan mac address table but not voice vlan.
If I manually rebooted the phone (using **#**), it can register to ccm very fast (less than 2 mins).
Let me clarify the issue. If I move a large group of IP phones (more than 100 phones) from one vlan to another, many phones need to take a long time (more than one day) to re-register to call manager if I don't reboot the phones manually. (Supposed that the phone registration is "automatic"!)
Just a stab in the dark...you said you moved more than 100 phones to a new VLAN...HMMM, and I am assuming you did this on the switch side of things, again assuming all of the LAN/WAN is configured correctly (ping the CCM from the switch in question and a LAN connection too also ping from the CCM to the switch). You would indeed need to reboot the phones to correct the VLAN changes to the network. If you reboot the switch (after hours of course) the phones will reboot and come back with the new changes.
A rule of thumb for me is to test changes like this long before a 100+ phone problem....
When you change the VLAN, the IP Addressing also changes. The phones would need to get an IP Address and other properties related to the new VLAN, to be able to talk to the Callmanager.
By default, the phones will wait for the timeouts based on the DHCP lease period before they would try to reach the DHCP server. But after you reboot the phones, they will broadcast a DHCP request and will get the new IP Address from the DHCP server and will be able to register will Callmanager.
You have reached the Cisco Logistics Support Center.. To Check Status of
your RMA, visit Product Returns & Replacements (RMA). Need help? Contact
us by Phone or Email. North Americas Phone: 1800 553 2447 Option 4
Email: email@example.com Europe Phone: +3...
The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
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 ...