I am experiencing hi delays and jitter over wireless network for wireless clients. We have part of our network still running standalone APs and part running WLC.
On standalone, I am experiencing delays about 5ms to 20ms with a very low jitter (using ping to measure).
On centralized (WLC), I am experiencing randomly delays from 50ms to 500ms to 1000ms(!!) very varying in time.
64 bytes from x.x.x.x: icmp_seq=1 ttl=127 time=70.2 ms
64 bytes from x.x.x.x: icmp_seq=2 ttl=127 time=197 ms
64 bytes from x.x.x.x: icmp_seq=3 ttl=127 time=17.7 ms
64 bytes from x.x.x.x: icmp_seq=4 ttl=127 time=247 ms
64 bytes from x.x.x.x: icmp_seq=5 ttl=127 time=169 ms
64 bytes from x.x.x.x: icmp_seq=6 ttl=127 time=295 ms
64 bytes from x.x.x.x: icmp_seq=7 ttl=127 time=115 ms
64 bytes from x.x.x.x: icmp_seq=8 ttl=127 time=345 ms
64 bytes from x.x.x.x: icmp_seq=9 ttl=127 time=165 ms
64 bytes from x.x.x.x: icmp_seq=10 ttl=127 time=292 ms
Changing WLAN QoS profiles, queue depth, CAC, DTIM, Beacon period doesn't affect these delays.
Configuration: WiSM blade (sw. 220.127.116.11) in Cat6500. C1121, C1131 or C1231 APs. WLAN: no authentication, no encryption. Wireless Client: Notebook with PCMCIA AIR-CB21AG, Linksys IP WIP330 Phone (both experiencing same delays when pinging them from wired network).
Does anybody experiencing same problems? Thanks for you reply.