Controllerless Networks

last person joined: 17 hours ago 

Aruba Instant Wi-Fi: Meet the controllerless Wi-Fi solution that's easy to set-up, is loaded with security and smarts, and won't break your budget.
Expand all | Collapse all

Changing the default DHCP Scope

  • 1.  Changing the default DHCP Scope

    Posted Mar 04, 2017 08:25 PM

    I'm trying to configure my AP103 so that it always assigns DHCP addresses from the - range to my wireless clients.


    I've seen the instructions saying you can specify network under More --> DHCP Server --> Virtual Controller Assigned - Default DHCP Scope but anytime I go to add the network I get the message...


    ERROR: subnet for magic-vlan is overlapping local interface subnet


    Please can anyone help?

  • 2.  RE: Changing the default DHCP Scope

    Posted Mar 05, 2017 05:19 AM

    Hey, what is your local interface set too? Is it in the 10.x.x.x range as well? 

    Have a look and see what your magic-vlan is set to (vlan 3333) and then see if this overlaps with your local interface. You can do this using the command below :


    Instant-105# show dhcp-allocation 

    It sounds like the IAP possibly sits on 10.0.0.x and you are also trying to assign IP's from this range as well. 

    As a test trying using a different DHCP IP range from the IAP and let us know if you can configure that?

  • 3.  RE: Changing the default DHCP Scope

    Posted Mar 05, 2017 07:38 PM

    Thanks Zailon,


    I've set my the Master IP to be and, unfortunately I need it to stay that way because the servers on the network need to talk to clients and vice-versa. I found that when I let the VC assign IPs from the 172.x.x.x subnet, my company's app, running on a smartphone, doen't have full functionality because it needs to connect to two servers simultanesouly in the 10.0.0.x/8 subnet and its not happening for some reason. I only connect to one of the two servers so only see half the functionality.


    So I just want a flat network where everything sits on the same subnet VLAN because I don't need anything NATed. I know I can get that by choosing the "Network assigned" for Client IP assignment and choosing the "Default" VLAN and everything works great (used static IPs) but then I have to have a DHCP Server service somewhere on the subnet network or keep assigning static IPs to all the clients.