while talking about the 3550s <div>I have a weird issue</div><div>I have a 7961G-GE and a 7962 that won't work if i plug them in to the 3550, however if I plug them in to a 3560 they work pretty well</div><div><br></div>
<div>any ideas of why this could be happening ?</div><div><br></div><div>I upgraded the ios to the latest available. but i just can't get this 2 phones to properly work and register to my ucm</div><div><br></div><div>
thanks<br><br><div class="gmail_quote">2010/10/11 Jason Aarons (US) <span dir="ltr"><<a href="mailto:jason.aarons@us.didata.com">jason.aarons@us.didata.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div lang="EN-US" link="blue" vlink="purple"><div><p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">Third party phones can use LLDP-MED. Avaya phones can get the voice vlan via dhcp on the data vlan and reboot into voice vlan. You should always avoid having end user ports being trunks, by default trunk mode would pass all vlans into the phone, creates potential spanning tree issues, etc.</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"> </span></p><div><div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in"><p class="MsoNormal"><b><span style="font-size:10.0pt">From:</span></b><span style="font-size:10.0pt"> <a href="mailto:cisco-voip-bounces@puck.nether.net" target="_blank">cisco-voip-bounces@puck.nether.net</a> [mailto:<a href="mailto:cisco-voip-bounces@puck.nether.net" target="_blank">cisco-voip-bounces@puck.nether.net</a>] <b>On Behalf Of </b>Shine Joseph<br>
<b>Sent:</b> Monday, October 11, 2010 5:41 PM<br><b>To:</b> Scott Voll; <a href="mailto:cisco-voip@puck.nether.net" target="_blank">cisco-voip@puck.nether.net</a><br><b>Subject:</b> Re: [cisco-voip] Switch port configs</span></p>
</div></div><div><div></div><div class="h5"><p class="MsoNormal"> </p><div><p class="MsoNormal"><span>If you are connecting a non-Cisco IP phone to a switch, you will need to configure the port as trunk. As Cisco phones/switches uses CDP to work out voice VLAN trunk configuration is not required, though it works well. Due to the management overhead and the security concerns this configuration is not recommended.</span></p>
</div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal"><span>When configured with the second option, the switch port gets configured as trunk, internally, but allows only two VLANs - Voice VLAN and the access VLAN.</span></p>
</div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal"><span>HTH</span></p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal"><span>Cheers,</span></p></div><div><p class="MsoNormal"><span>Shine</span></p>
</div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal"> </p></div><div><div><p class="MsoNormal"><span>e the port as</span><span style="font-size:10.0pt"></span></p></div><div><div><p class="MsoNormal" style="background:whitesmoke">
<b><span style="font-size:10.0pt">From:</span></b><span style="font-size:10.0pt"> <a href="mailto:svoll.voip@gmail.com" title="svoll.voip@gmail.com" target="_blank">Scott Voll</a> </span></p></div><div><p class="MsoNormal" style="background:whitesmoke">
<b><span style="font-size:10.0pt">Sent:</span></b><span style="font-size:10.0pt"> Tuesday, October 12, 2010 1:10 AM</span></p></div><div><p class="MsoNormal" style="background:whitesmoke"><b><span style="font-size:10.0pt">To:</span></b><span style="font-size:10.0pt"> <a href="mailto:cisco-voip@puck.nether.net" title="mailto:cisco-voip@puck.nether.net
CTRL + Click to follow link" target="_blank">cisco-voip@puck.nether.net</a> </span></p></div><div><p class="MsoNormal" style="background:whitesmoke"><b><span style="font-size:10.0pt">Subject:</span></b><span style="font-size:10.0pt"> [cisco-voip] Switch port configs</span></p>
</div></div></div><div><p class="MsoNormal"> </p></div><p class="MsoNormal">is there anything wrong with having your switch ports configured as follows? </p><div><p class="MsoNormal"> </p></div><div><div><p class="MsoNormal">
switchport trunk encapsulation dot1q</p></div><div><p class="MsoNormal"> switchport trunk native vlan 14</p></div><div><p class="MsoNormal"> switchport mode trunk</p></div><div><p class="MsoNormal"> switchport voice vlan 146</p>
</div></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">Normally I would have them set like:</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">switchport access vlan 14</p></div><div>
<p class="MsoNormal">switchport voice vlan 146</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">These are 3560's running 12.2 code.</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">
TIA</p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">Scott</p></div><div class="MsoNormal" align="center" style="text-align:center"><hr size="2" width="100%" align="center"></div><p class="MsoNormal">
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