I need some help around DHCP option 156 when setting up VPN tunnel with Meraki MX and non-meraki vpn peer. Does anyone has any experience ? I am having difficulties in setting DHCP option in MX. Please let me know if anyone came across with similar issue?
- DHCP relay does not work on MX as the IP addresses on the site and relay servers are different.
- VOIP phone require dhcp option 156 for certain values, but I cannot get this to work as the IP Phones does not pickup this option. Please see below the option I have. If I can relay to another Windows Server, i know this option will work. But with MX running DHCP, i am not able to relay to another site.
Are your IP Phones picking up an IP address in the right vlan? For one of our customers they have an Avaya phone system and setting the code to 242 works fine. A quick google shows 156 to be Mitel? Have you tried factory resetting the phones before they register?
Darren O'Connor | uccert.co.uk https://www.linkedin.com/in/darrenoconnor/
I'm not an employee of Cisco/Meraki. My posts are based on Meraki best practice and what has worked for me in the field.