WLC-5508

[amarnath-praveen]

Hi Guys,

We have WLC-5508 in the production. User complained that they are getting a pop up as no internet connection while clicking the guest ssid which in their PC.

When you click on the Wifi, it is not pulling up the popup to connect and is giving the error "no internet connection"
We have tried a Laptop, Samsung phone and an Iphone.
LAPTOP MAC:A0D37A2CD4F4
SAMSUNG MAC:AC5F3EA86F67
IPHONE MAC:BC9FEF5A70B1. 

One of our senior engineer troubleshooted the issue. He said that the dhcp pool is not providing the ip address to the clients, As he could see 0.0.0.0 ips were provided to the clients,so we need to start the internet router where the DHCP pool was configured.

How he found that the issue was with the DHCP pool?

Please let me know how to check the logs in the WLC. Since I do not have much hands on experience. Suggest me how to troubleshoot from the scratch.

[Leo Laohoo]

As he could see 0.0.0.0 ips were provided to the clients,so we need to start the internet router where the DHCP pool was configured.

This happens when there is a duplicate IP address against the dynamic interface.

[johnlloyd_13]

hi,

did you ask your senior engineer what he found out? 🙂

do a show log on the internet router to dig more.

usually there's a syslog that indicate or has a keyword "duplicate."

[amarnath-praveen]

Thank you for your response. I will check the logs in Interner router and share my findings. But restarting the router is not a good idea right. How to solve this issue with out restarting router. 

[amarnath-praveen]

Thank you for your help John.