Internet disconnect after few minutes of operation.

[selvam_subraman]

Setup details:
Ruckus SZ100 WC1 & WC2
R600 Access Points
DHCP server with different scopes
Switch with different vlan assigned to scopes respectively.

Affected devices: Apple Iphone (10/450)

Tried: connecting to different AP (connected to different switch)

Hope I can get some information from experts. 

Thank you. 

[paul_van_der_cr]

IOS11 problems?

[selvam_subraman]

yes, few devices are ios11. one 10.x and 2 android devices. 

I can see the traffic(firewall console) 

[paul_van_der_cr]

I know that there are a lot of problems with IOS11, but not sure if your problems have to do with this...

[selvam_subraman]

the same device can connect to other open wireless without any issues. We have two wireless networks. 1 protected and another open with separate controllers. Now issues with protected wireless only.