I had this same problem. The phone tries to get an IP address before authenticating with 802.1x. This results in the phone getting an IP address on the native, workstation VLAN. After the phone authenticates, the switch puts the phone in the correct voice VLAN.
The phone now has a workstation IP address on the voice VLAN. I solved it with DHCP client class processing as previously mentioned. No amount of switch configuration will likely resolve this issue. It is in the phone's firmware. I strongly dislike Avaya and decided to fix the problem without them. Thanks, Lou Goddard Network Engineer 302-552-8053 [email protected] From: Patrick Printz <[email protected]> Sent: Wed, 11/9/2011 1:28pm To: Enterasys Customer Mailing List <[email protected]> Subject: RE: [enterasys] IP Phones & DHCP The phones work fine if I set the port vlan to the voice vlan. The issue appears to be when the phone gets an IP from DHCP on the data vlan, is told to jump to the voice vlan, and tries to pull a new IP. As I have exhaustively looked at the vlan egress on the ports, I think this is a firmware issue on the phones. Patrick Printz Network Infrastructure Quinsigamond Community College 670 West Boylston Street Worcester, MA 01606-2092 w. 508-854-7517 c. 508-726-9529 "If a man is called a street sweeper, he should sweep streets even as Michelangelo painted, or Beethoven composed music, or Shakespeare wrote poetry. He should sweep streets so well that all the hosts of heaven and Earth will pause to say, Here lived a great street sweeper who did his job well." ~Martin Luther King, Jr. From: Nick Allen [mailto:[email protected]] Sent: Wednesday, November 09, 2011 1:05 PM To: Enterasys Customer Mailing List Subject: Re: [enterasys] IP Phones & DHCP and if you put a workstation into the voice vlan, does that get an IP ok? On Wed, Nov 9, 2011 at 6:03 PM, Nick Allen <[email protected]> wrote: What's your DHCP setup? Do you have one DHCP server? If so, does it have an interface in the Voice VLAN or are you using DHCP relay? If you're using DHCP relay, then ensure your DHCP server port isn't egressing the Voice VLAN or you'll run into this: http://avayausers.com/showthread.php?t=3251 although that would normally show DHCP ack error. Any policy or ACL's on that switch? N. On Wed, Nov 9, 2011 at 4:54 PM, Patrick Printz <[email protected]> wrote: Anyone running Avaya 9600 series phones ever have an issue where the phones talk to DHCP on the default VLAN, but when they switch to the voice VLAN, they do not talk? I have been dealing with this for weeks, and the phones are not talking on the voice VLAN like they should. I have done traces and it appears that DHCP receives the request and responds, but the phone never receives the response. The response gets to the uplink port and then stops. I have messed with lldp, ciscodp, and the vlan egress settings. I cannot see why the phone is not receiving the DHCP response when it switches to the voice vlan. Patrick Printz Network Infrastructure Quinsigamond Community College 670 West Boylston Street Worcester, MA 01606-2092 w. 508-854-7517 c. 508-726-9529 "If a man is called a street sweeper, he should sweep streets even as Michelangelo painted, or Beethoven composed music, or Shakespeare wrote poetry. He should sweep streets so well that all the hosts of heaven and Earth will pause to say, Here lived a great street sweeper who did his job well." ~Martin Luther King, Jr. --To unsubscribe from enterasys, send email to [email protected] with the body: unsubscribe enterasys [email protected] -- This e-mail is intended only for the named person or entity to which it is addressed and contains valuable business information that is proprietary, privileged, confidential and/or otherwise protected from disclosure. If you received this e-mail in error, any review, use, dissemination, distribution or copying of this e-mail is strictly prohibited. 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