We are having an issue with a couple of our SSID's that don't look like they are pulling DHCP addresses all of a sudden. They are running on the same VLAN, but one SSID gets VLAN and the other 2 don’t. The controller also acts as the Internet Gateway for all wireless clients.
Best answer by Ovais Qayyum
I assume you are trying to Ping from a wireless client which is connected to one of the APs in building 2? high response time on Ping could be caused by many factors, one of which could be bad wireless. You should probably first test the communication between the Building 2 APs and the NX5500 controller, log into the AP, and Ping from the AP console to check the response time. Use the following command and replace VLAN with the SSID VLAN that you want to test.
VX9000-Primary~#ping 188.8.131.52 source vlan <id>
If this turns out bad then you have some sort of network configuration problem.
To test if the controller is in the data path, you can try the following command on the AP to check how the data is routed; here for example you can Ping Google DNS 184.108.40.206 and replace the source address with the SSID VLAN interface.
VX9000-Primary~#traceroute <IP address to Ping> -s <Source IP address>
traceroute to 220.127.116.11 (18.104.22.168) from 10.49.224.38, 30 hops max, 46 byte packets
1 10.49.224.1 (10.49.224.1) 1.033 ms 0.976 ms 0.912 ms
2 10.48.0.1 (10.48.0.1) 0.647 ms 0.726 ms 0.535 ms