Controllerless Networks

New Contributor

Changing the default DHCP Scope

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?

MVP Guru

Re: Changing the default DHCP Scope

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?

If my post addresses your query, give kudos:)
New Contributor

Re: Changing the default DHCP Scope

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.

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