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VVX Series phone DHCP Option 125

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Occasional Contributor

VVX Series phone DHCP Option 125

We have Polycom VVX 300 phones at some of our remote locations and they are supposed to be registering over the WAN to our main DHCP server back at HQ. According to this article, the Cisco 2901 is stripping the Option 125 header. Now the article seems to explain how to fix in a MITEL environment, but does someone know how I would go about doing that for a Polycom VVX 300 or 500 for that matter in a Lync environment. If DHCP is local to the remote site, we don't have the issue. So it's obviously the 2901 breaking it, but I don't think Cisco is going to fix that for me. 

Message 1 of 7
6 REPLIES 6
Polycom Employee & Community Manager

Re: VVX Series phone DHCP Option 125

Hello Stelz,

welcome back to the Polycom Community.

We had in the past an issue with a Opion125 as malformed packet was send from our DHCP client.

 

It is always useful to include the currently used UC Software version as issues experienced may already be addressed in a newer release.

This also allows yourself and others to check against current software release notes.

The above is also stated in the "Read First: Welcome to the Polycom VoIP Forum"

Therefore the Polycom VoIP FAQ contains this post here:

Question: How can I find out my SIP UC Software Version or the BootROM Version of my Phone?
Resolution: Please check here

Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.

Best Regards

Steffen Baier

Polycom Global Services




<======== Signature / Disclaimer ========>
Please be aware:For questions about the type of support to expect please check here

Please also ensure you always check the VoIP , Video Endpoint , Skype for Business , PSTN or RPM FAQ's

Please remember, if you see a post that helped you , and it answers your question, please mark it as an "Accept as Solution".

The title Polycom Employee & Community Manager is an automatic setting within the community and any forum reply or post is based upon my personal experience and does not reflect the opinion or view of my employer.
Poly employee participation within this community is not mandatory and any post or FAQ article provided by myself is done either during my working hours or outside working hours, in my private time, and maybe answered on weekends, bank holidays or personal holidays.
Message 2 of 7
Occasional Contributor

Re: VVX Series phone DHCP Option 125

Sorry, first time on the forum so definitely should have looked it up. Here is the current info:

 

Status - Application - Main: Label: SIP Version: 5.0.0.6874

Phone:

 

BootBlock: 3.0.3.0013

Updater: 5.2.0.3747

 

Model: VVX 500 (most in the branches are 300s, this is just the one I have for testing)

Assembly: 3111-44500-0001 Rev A 

 

It is setup to register with a Lync server

Message 3 of 7
Polycom Employee & Community Manager

Re: VVX Series phone DHCP Option 125

Hello Stelz,


this Software is completely outdated and I can only urge you to install a currently supported version.

 

Oct 7, 2011 Question: How can I setup my Phone / Provisioning / Download / Upgrade / Update / Downgrade Software?
Resolution: Please check => here <=


Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.

Best Regards

Steffen Baier

Polycom Global Services




<======== Signature / Disclaimer ========>
Please be aware:For questions about the type of support to expect please check here

Please also ensure you always check the VoIP , Video Endpoint , Skype for Business , PSTN or RPM FAQ's

Please remember, if you see a post that helped you , and it answers your question, please mark it as an "Accept as Solution".

The title Polycom Employee & Community Manager is an automatic setting within the community and any forum reply or post is based upon my personal experience and does not reflect the opinion or view of my employer.
Poly employee participation within this community is not mandatory and any post or FAQ article provided by myself is done either during my working hours or outside working hours, in my private time, and maybe answered on weekends, bank holidays or personal holidays.
Message 4 of 7
Occasional Contributor

Re: VVX Series phone DHCP Option 125

We updated to 5.4 Rev A and still experiencing the problem. It works fine on a local DHCP server meaning when there is no ip helper address involved. Like I said, I don't think this is a Polycom issue, but was wondering if anybody had any experience with presenting a valid DHCP option or is everybody doing DHCP locally at remote locations vs. over the WAN?

Message 5 of 7
Regular Advisor

Re: VVX Series phone DHCP Option 125

We run a centralized DHCP over our MPLS network.  We currently have sites where the "DHCP Helper" is on Cisco 28xx, Cisco 38xx, Juniper SSGs, and PaloAlto PAs.

 

However we don't use DHCP Option 125, we try to keep the DHCP configuration as close to the Microsoft standard for Lync IP phones as possible.  

 

What are you configuring via Option 125?  Are you using a Microsoft DHCP server?

Message 6 of 7
Occasional Contributor

Re: VVX Series phone DHCP Option 125

LOL. Sorry about this, but apparently some joker as in myself forgot to disable CDP. Once that was disabled, it grabbed an IP. Thanks for the help

Message 7 of 7