Client performance on Cisco 7500 Flex controller with version 188.8.131.52 work fine but high latency on code 184.108.40.206.
After upgrading, ping times from clients has gone from ~10ms to ~2500ms. I have a Cisco 7500 Flex controller, when running controller code version 220.127.116.11 client performance was as expected. When using code 18.104.22.168 performance is terrible. I have tried upgrade to 22.214.171.124 and clean configuration (reset) with 126.96.36.199 with the same results.
I have tested using 3502i APs with the signal metrics (from AP) reported by the clients (all testing close to these figures):
Signal Strength : -48 dBm
Signal to Noise : 49 dB
AP's are in HREAP/Flex mode. The WLANs use HREAP/FlexConnect local switching. I have tested WLAN's with WPA2-PSK and 802.1x/WPA2 with the same results. I have
Several clients\operating systems , laptops, ipads, iphone have been tested and all experience consistently poor ping latency performance on both 2.4Ghz and 5 Ghz when using controller code 188.8.131.52.
When it is switched between 184.108.40.206 and 220.127.116.11 the results are consistent; good performance on 18.104.22.168 and terrible performance on 22.214.171.124. We would like to use 126.96.36.199 for its enhanced FlexConnect features.
Here is the bug what we are hitting and here is the workaround:-