DHCP on virtual smartzone, need to supply clients connecting to the guest SSID from dhcp on the controller

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Hi, please i need help regarding how to set DHCP on virtual smartzone. We need the clients of guest vlan to take ip from dhcp set on the controller, hopefully someone can guide me about how to set this. thank you
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Mohammad Shamseddine

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Posted 4 months ago

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Sanjay Kumar, Employee

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Hi Mohammad,

Please find the below link and refer page number 403 "AP-based DHCP/NAT" section for the configuration. I hope this helps.

https://support.ruckuswireless.com/documents/2956-smartzone-5-1-2-administrator-guide-sz300-vsz-h/do...
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Mohammad Shamseddine

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Thank you for your reply.

from the documentation it seems that we should deploy the enable dhcp for multiple APs setting.

But can you tell me where to set the default gateway ip address for the dhcp pool.
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Sanjay Kumar, Employee

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Hi Mohammad,

The gateway will be the AP's IP, depending on the config option you choose. There are 3 options as below:
Enable on Each AP.
Eable on Multiple APs.
Enable on Hierarchical APs.

Check out the page number 404 for more information.
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Sanjay Kumar, Employee

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Mohammad Shamseddine

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Thank you Sanjay for your reply,

I read the links but actually they did not clear my confusion.

I configured dhcp Enable on Multiple APs.

The wireless client connecting to Guest SSID is taking ip as required and gateway as the IP of AP acting as DHCP server. After connecting i was surprised that client is able to access the internet although no routing is done for the gateway IP in the core network. I did traceroute, the client is connecting to the guest ssid, the client is taking ip from configured dhcp and gateway as ip of ap acting as dhcp server. then the packets are forwarded to the default gateway of the management subnet, the management subnet includes the ip addresses of the AP and controller and it is the untagged vlan on the switch ports. This is not feasible since clients connecting to the guest ssid are able to ping the controller and the aps. 

scenario:

AP management ip : 192.168.16.212/24
AP default gateway : 192.168.16.1 (routing for management network on core is done and can reach all subnets)

DHCP pool configured on VSZ : 192.168.77.0/24 (no configuration is done for this subnet on core switch)
pool start : 192.168.77.10
pool end : 192.168.77.200



client connects to guest ssid, gets redirect to the guest portal, enter guest pass and gets the following ip addresses



After connecting i did traceroute to google.com and here is the result



the packets are going to the management gateway 192.168.16.1

Would you please help me to get an explanation on how this is happening and what to do to set a default gateway for the clients connecting to the guest ssid 

Thank you