High latency with strange patrol peak

Unanswered Question
Apr 20th, 2010

Hi,

I have several AP´s working with WLC 4400 series. The workstation with Cisco PCI wifi cards detect high latency when I ping several servers. It´s strange because always is the same patrol of high latency. Each 20 sec 3 peaks of high latency in all workstation in differents areas. below sample. I wired connected the workstation and I don´t get high latency, only on wireless


Reply from 10.137.221.22: bytes=32 time<1ms TTL=126
Reply from 10.137.221.22: bytes=32 time<1ms TTL=126
Reply from 10.137.221.22: bytes=32 time<1ms TTL=126
Reply from 10.137.221.22: bytes=32 time=1ms TTL=126
Reply from 10.137.221.22: bytes=32 time=100ms TTL=126
Reply from 10.137.221.22: bytes=32 time<1ms TTL=126
Reply from 10.137.221.22: bytes=32 time<1ms TTL=126
Reply from 10.137.221.22: bytes=32 time<1ms TTL=126
Reply from 10.137.221.22: bytes=32 time<1ms TTL=126
Reply from 10.137.221.22: bytes=32 time=18ms TTL=126
Reply from 10.137.221.22: bytes=32 time=111ms TTL=126
Reply from 10.137.221.22: bytes=32 time<1ms TTL=126
Reply from 10.137.221.22: bytes=32 time<1ms TTL=126
Reply from 10.137.221.22: bytes=32 time<1ms TTL=126
Reply from 10.137.221.22: bytes=32 time<1ms TTL=126
Reply from 10.137.221.22: bytes=32 time=34ms TTL=126
Reply from 10.137.221.22: bytes=32 time=127ms TTL=126
Reply from 10.137.221.22: bytes=32 time<1ms TTL=126
Reply from 10.137.221.22: bytes=32 time<1ms TTL=126
Reply from 10.137.221.22: bytes=32 time<1ms TTL=126
Reply from 10.137.221.22: bytes=32 time<1ms TTL=126

Thanks in advanced

I have this problem too.
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samsita Tue, 04/20/2010 - 04:39

I add that the ping is from worstation connected with wireless to other server connected to other SW. There are not firewall.in the middle just 2 routers with HRSP

I also launch ping to other server in the same network with the same high latency

Model of AP  AIR-LAP1242AG-E-K9 with 2.4 Ghz

I ping from Cisco SW to server and I get normal latency

samsita Wed, 04/28/2010 - 02:50

Any Help? I can provide further info

Thanks in advanced

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