Internal DHCP scope on Cisco WLC

WLC can also be act as DHCP server. Here we are creating DHCP scope for corporate SSID. We are assuming corporate SSID is already configured. Please refer to document SSID creation if you also want to create SSID.

DSCP scope creation on WLC is quite similar as we do in router or switch

Step1. Give the name to DHCP scope. Name is just identification; you can give any name to it.

(Cisco Controller) >config dhcp create-scope corporate-scope

Step2. Configure the lease time for scope. Lease time is in seconds. Choose the value with precaution as extremely high or very low lease value can create problem.

(Cisco Controller) >config dhcp lease corporate 86400

Step3. Create the DHCP pool. User will get IP address from this range. Please make sure you choose the sufficient addresses as per the current or future strength.

(Cisco Controller) >config dhcp address-pool corporate 192.168.1.10 192.168.1.254

Step4. Specify the corporate network subnet.

(Cisco Controller) >config dhcp network corporate  192.168.1.0  255.255.255.0

Step5. Specify the gateway which user will get with IP address.

(Cisco Controller) >config dhcp default-router corporate 198.168.1.254

Step6. Configure the DHCP timeout value.

(Cisco Controller) >config dhcp timeout 5

Step7. It is again very important part of scope creation. User will get these DNS server.

Wrong selection may lead to DNS issues.

 If there is any firewall in between, make sure that DNS port must be open between the users gateway and DNS servers.

(Cisco Controller) >config dhcp dns-servers corporate 172.16.1.100 172.16.1.101

Step8. Enable DHCP scope in the SSID

(Cisco Controller) >config dhcp enable corporate