07-07-2014 05:48 AM
i have a problrm with 7210 controller with OS 220.127.116.11 ,the problem is when i open a pool with subnetmask 255.255.0.0 the controller cant accept this so please help me to solve that issue .
kindly find attached file ,snap shot for the error
Ehab Atef kamel
07-07-2014 06:01 AM
thank you for your fast respose ,
i have 350 access point in a hotel and alot of users and alot of vlans so i want to make a big pool of dhcp in each vlan ,,
so want /16 not /24 and what if i want to make /8 ,why this error ,i made it before on 3200 MC and no problem ,
07-07-2014 06:03 AM
07-07-2014 09:36 AM
It looks like you are facing 2 different issues; both of which Tim has covered.
- Your fist was that you had overlapping subnets. You were trying to add a /16 when a /24 already existed. This may have been in the DHCP pools or your VLAN IPs, make sure you check both.
- Second, you cannot create a DHCP pool for a /16, the 7210 controller can only be configured with 5000 addresses, while a /16 has 65536.
It sounds like you should explore a /23 or /22. But remember, before doing so you need to remove any /24s (scopes and IPs) that may be in this new range.
Systems Engineer, Northeast USA
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