Can't get phones to register with CUCM through a VPN.
I'm trying to set up VoIP capabilities through a VPN to a remote site and cannot get the phones to register.
Possible relevant hardware info: The CUCM at the main site is version 7.1 The main site firewalls are ASA5585-X's running IOS 8.4.4 The remote site firewall is an ASA5520 running IOS 8.4.7
The remote site switch, a 3750E, is the DHCP provider for both phones and computers
The DHCP configuration for the phones includes the option 150 ip xxx.xxx.xxx.xxx line pointing to the IP address of the UCM.
This is how my other remote sites are set up, but they don't utilize a VPN for connectivity to the main site.
I can ping from the remote switch to the CUCM and I can ping from the CUCM to the remote phone vlan's IP address, which would infer that the issue is not a matter of non-connectivity.
When a phone is plugged in, the switch manager shows that the phone receives an IP address, but the phone does not respond to ping attempts.
Scrolling through the network configuration on the phone, the TFTP server sand other pertinent IP addresses are correct, but the phone was set up at the main site, so I don't know if it's receiving that info or if it's simply retained from the earlier configuration.
What would be the next step in tracking down the cause?
The first step would be packet captures from the phone or the switch port where the phone is connected so we see what the phone is doing. Is the phone supposed to establish VPN connection to main site or is the VPN tunnel transparent to it?
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 ...
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