My goal is to put all guest network traffic from the Ubiquiti Unifi access points onto their own subnet using VLAN 20 on a series of HP Procurve 2610-48-PWR switches.

The Unifi Access controller allows me to set the guest network to work with a given VLAN ID, which I obviously set to 20.

I want all guest traffic to be filtered to our secondary ISP on a separate firewall that will also issue DHCP addressing. The ISP runs to a firewall that runs to a web filter, then to the central Procurve. The Procurve then splits to the other two Procurves in the other wings of the campus.

On the Procurves, I configured each to use VLAN 20 over the designated subnet and tagged every port that has an access point plugged into it. All three switches have IP addresses that are contained within the desired subnet.

I was under the impression that configuring a VLAN with the same ID on each connected switch, as well as supplying an IP address within the correct addressing scheme would allow them to communicate. The switches can communicate with each other over the separate subnet, but they can't reach the filter or the firewall. They also can't reach a client plugged into the switch with a statically assigned IP address in the correct subnet.

I have been at this for a few hours and am running out of ideas. Any advice would be much appreciated.

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    Can you provide a diagram? When you say the switches can communicate, what do you mean? Do they have interfaces on Vl 20? Is the firewall port have VL 20 untagged?
    – Ron Trunk
    Dec 20, 2013 at 18:57

1 Answer 1


First off, the switches don't have to have an address in VLAN 20; in fact you absolutely don't want that. (unless you want guests hacking into your switches) VLAN 20 should exist on ports connected to (a) the APs, (b) the inter-switch links, and (c) the router infrastructure (firewall, etc.) That will be tagged everywhere but the access ports going to the router/firewall/etc.

(Your switches aren't routers; they're just layer-2 switches. The address they're assigned is for management.)

  • I understand that. I was trying to figure out what was meant by "the switches can communicate with each other."
    – Ron Trunk
    Dec 20, 2013 at 21:56
  • @RickyBeam - Ah, I see. I appreciate the lesson. I will make sure I change that first thing on Monday and verify that I configured it properly. I will report back with more, including a network diagram for Ron
    – MooseBalm
    Dec 21, 2013 at 14:38
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    @RickyBeam I apologize for the delay. Everything I had done previously was nearly correct. After making sure that all of the proper interfaces were tagged and that the IP addresses were gone, I had the system up and running after about 10 minutes yesterday morning. Thanks so much for answering this!
    – MooseBalm
    Dec 25, 2013 at 1:47

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