Tuesday, February 26, 2019

LLDP (VLAN auto-assignment) for computers on Dell N Series switches?

Right now we have all our computers, servers, printers, etc all on one flat network, default untagged VLAN. The only thing we have on separate VLANs are the phones (VoIP) and wifi traffic.

On our Dell N3048P switches, we have set up the voice VLAN to 50 and LLDP global commands:

vlan 50 name "voice" switchport voice vlan 

Each port is configured with:

description "Phone/PC" spanning-tree portfast switchport mode general switchport general allowed vlan add 50 tagged switchport voice vlan 50 switchport voice vlan override-authentication exit ! 

Our computers are connected to our phone sets, and those phone sets connect to the switches. Computers stay on the default VLAN and phones automatically get thrown onto the voice VLAN.

Now, what I am trying to do is figure out the proper way to auto-configure computers to have them be put on VLAN 10 in the same way phones are put on VLAN 50. Is this possible?

I did call support and they told me there wasn't really a way to do this and suggested I just make a new VLAN and then assign this command to each port:

switchport general pvid 10 

But in doing that, ANYTHING that connects to these switches, such as a server or wifi AP (just for example) will get put on the computer VLAN. I am not really trusting the Dell support tech on this one since he seemed dead to the world and very unhappy to help me. I told him to close the case and I would just figure out a solution.

I've been coming through the manual but its a little tough to wade through.



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