MS Switches and Avaya VoIP

[jfdpratt]

We are in the process of updating our network to Meraki, and we have started to swap out our switch stacks with the new Meraki Stacks.  We started with some small closets, and did our first real "production" stack last night.  Everything seemed to go well besides some small mistakes that we made with our patching, however we are seeing a new issue now.

We have an Avaya VoIP system in place, and any instance where the user is connecting their computer to the Avaya Phone instead of using a dedicated drop, the computer will not pull an IP address.  We have the data and voice VLANs set for that port, and it shows the Current Clients on that port associated with the correct VLANs.  The issue is that the computer never pulls an IP and gets the default 169.254 address, but if you static code the computer with a valid IP, it works fine. 

We are migrating from Cisco 2960-X switches, and everything seemed to work fine there.  So I'm not sure if there is an issue with our Meraki Configuration, or if there is something up with the Avaya system not allowing the DHCP requests through.  Any guidance would be appreciated since I'm still trying to get used to this Meraki Dashboard.

[alemabrahao]

Take a look at those links.

Meraki switches, Avaya IP phones, LLDP, and setting call-server/options : r/sysadmin

VoIP on Cisco Meraki: F.A.Q. and Troubleshooting Tips - Cisco Meraki Documentation

[Mloraditch]

We have a large client with avaya phones and have zero issues with a normal access port setup with a data and voice vlan.

Do you maybe have an old avaya dhcp option still present? Those can confuse the phones and cause issues.

[jfdpratt]

We have no other options in DHCP enabled.  DHCP for the Avaya system is coming straight from the controllers, and the DHCP for the data VLAN.  I tried setting the options linked to in the first post and that didn't make any changes to how things ended up on this end.  It is very odd.  We have some older phones at this locaiton, so I am thinking of trying a newer phone to see if there is a difference.

[PhilipDAth]

I assume if you statically configure a port in the data lan (on the Meraki switch), and plug a PC directly into that, it works?

[jfdpratt]

That is correct.  Any time we do a static address on anything, it just works as long as that port has the correct VLAN associated with it.