10-04-2013 05:24 PM
I have an SG300-52 in the field and the site recently picked up some VOIP phones. I currently have the following
Existing VLAN2 = Data network
Created VLAN3 = Voice network
Under voice VLAN properties I set the Voice VLAN ID=3 and enabled Auto Voice VLAN.
Trunked all ports, setting VLAN2 (data) as untagged and VLAN3 (voice) as Tagged
When the site plugs a phone into the switch, it correctly joins VLAN3 and obtains an IP address, but the data VLAN suddenly changes to VLAN1, even though I have VLAN1 marked as forbidden on all ports.
I'm at a loss as to why this is happening. Any suggestions?
Denny
10-05-2013 09:02 AM
10-05-2013 01:02 PM
I believe I figured out why this one happened. The macro setting for smartports had the default vlan still set to 1, so I guess when the the phone+computer was detected the port was reconfigured to put data on VLAN1.
Per a suggestion in another post, I turned smartports off and suddenly lost access to the management VLAN (VLAN4) on the switch. Nothing on that VLAN is responding, however the devices on the data and voice VLAN are still communicating. The link between the router and switch for the management VLAN is a trunk port setup with tagging.
Denny
10-05-2013 03:49 PM
Hi Denny, you're correct the voice macro needs to be modified to reflect vlan 2 for data. Also, don't manually configure any ports that you connect a phone to, otherwise it conflicts with the software.
-Tom
Please mark answered for helpful posts
10-08-2013 12:32 PM
Hi Tom,
Thank you for the reply.
I finally got it all figured out. The Smartports are working as expected. What wasn't expected was the end user hooking the stuff up. Once someone more knowledgable got there and plugged stuff in correctly, it all worked.
Thank you,
Denny
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