Has anyone ever configured/supported Cisco IP phones on Juniper EX-series switches? Can it be done? What are the drawbacks/concerns? I am no Cisco VoIP guru, but I know that they are supposed to use CDP to communicate between phone and switch. Obviously since this is a Cisco proprietary protocol, can it still be supported w/o CDP?
We are in the equipment selection phase of a project coming down the line and the customer wants to use Cisco VoIP (as well as Cisco WLC and WAP's). There will potentially be a mix however of that along with Avaya phones and MS Lync soft phone.
I personally am designing for an ALL Juniper EX setup (6x 4200's in a VC x 3 Floors, each with 20G LAGs) aggregating back to a 2-member 4550 VC. The 4550 may/may not have routing enabled, I have not decided yet if I want to use my existing 4200 VC cores for Layer 3 with VRRP between the chassis' (probably overkill).
I will be spec'ing out Cisco gear as well (since I have to). Any help on the VoIP support on Juniper would be much appreciated !!!!
Thanks In Advance.
As Juniper EX-Series does not support CDP, so it can be acheived through lldp-med.
These are the Cisco ip phones which fully support the LLDP-MED protocol.
The following Cisco phones models with firmware version 8.3(3) or later support the LLDP-MED protocol:
•7906G•7911G•7931G•7941G/7941G-GE•7942G•7945G•7961G/7961G-GE•7962G•7965G•7970G/ 7971G-GE•7975G "
See this link
Also these might be usefull data. I suggest you go through these doc before deployment.
turn on both LLD and LLDP-MED and all should work.
@dipanc -- Thank you for that information. I read through all the material and from what it sounds like, I can support Cisco IP Phones on EX switches. Whether or Not the Cisco phones support LLDP-MED, they should still work with some added caveats.
Unfortunately, 2 of the 3 phones that were selected do not support LLDP-MED. That means that I will have to hard set the Voice and Data vlans into every phone manually, as well as the 802.1P parameters. Having the LLDP-MED support would make our life a lot easier from a management perspective. Having to hardcode those parameters removes the portability of the user taking their phone from one floor to another (unless of course those VLAN's live on that floor).
That should work....All the best with the deployment...
See my post
You have to do a little work yourself .. but not a lot ..