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Forum Discussion
WAX615 unwanted DHCP on 1 SSID's VLAN
Hello,
Management->IP->LAN->Genaral:
DHCP disabled, static IP given.
802.1Q: Untagged VLAN [X] = 4000 (bit bucket)
Management VLAN: 3000
Wireless->SSIDs
4 SSIDs, on VLANs 500,600,700,800, named the same as VLAN for testing purposes.
All are set to "Addressing and Traffic: bridged" Defaults for everything else.
VLAN 500 is the only problem. The differences in config are:
Captive Portal: "Click Through"
Wireless Client Isolation: Enabled
On my router I see a DHCP request (tcpdump) coming from that VLAN, the MAC of which is the same as the main ethernet interface of the AP. Lease is provided by the router in the expected DHCP range.
My question is - where is this DHCP request coming from and why? How do I disable it?
Thanks, and let me know if you need any more information.
2 Replies
To clarify: when I removed the Captive Portal from the SSID, the DHCP request went away. Tech support is verifying this with upper level techs but this "just feels like" the correct answer given the facts.
So the answer occurred to me as I was working with tech support. If you're running a Captive Portal, you need a web server to serve the capture page. That web server needs an IP address. It was the web server that served the Captive Portal that was requesting an IP address. Case closed.
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