topic Re: Is ping latency above 5ms normal? in Wireless

topic Re: Is ping latency above 5ms normal? in Wireless https://community.cisco.com/t5/wireless/is-ping-latency-above-5ms-normal/m-p/1584969#M67985 <HTML><HEAD></HEAD><BODY><P>Thankyou all for replying.</P><P></P><P>I have found document 'Optimizing Citrix technology for operation over wireless wide area networks'.  It states sensitivity to latency will cause lags but suggests solutions, I will be going over this and will post update.</P></BODY></HTML> Wed, 16 Mar 2011 09:23:22 GMT Habibul Mumin 2011-03-16T09:23:22Z Is ping latency above 5ms normal? https://community.cisco.com/t5/wireless/is-ping-latency-above-5ms-normal/m-p/1584964#M67980 <P>I have a wireless setup of WLC 4402 and four 1250 APs.</P><P></P><P>There are about 10 users.  Some times they have freezes and lags in network connection.</P><P></P><P>The end users notice ping latency above 5ms, below is a ping test for 30 seconds.</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=25ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=18ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=1ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=4ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=1ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=19ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=2ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=23ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=37ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=83ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=89ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=12ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=10ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=11ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=14ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=29ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=10ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=11ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=73ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=1ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=10ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=12ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=256ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=179ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=13ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=18ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=6ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=272ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=14ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=4ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=2ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=5ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=13ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=19ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=4ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=12ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=2ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=12ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=12ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=16ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=455ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=16ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=4ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=12ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=3ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=2ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=1ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=6ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=15ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=21ms TTL=127</P><P></P><P>Reply from 10.1.10.160: bytes=32 time=4ms TTL=127</P><P></P><P></P><P></P><P>Ping statistics for 10.1.10.160:</P><P></P><P>    Packets: Sent = 142, Received = 142, Lost = 0 (0% loss),</P><P></P><P>Approximate round trip times in milli-seconds:</P><P></P><P>    Minimum = 1ms, Maximum = 455ms, Average = 16ms</P><P></P><P></P><P>Is this normal?</P><P></P><P>Any help will be appreciated.</P> Sun, 04 Jul 2021 02:56:51 GMT https://community.cisco.com/t5/wireless/is-ping-latency-above-5ms-normal/m-p/1584964#M67980 Habibul Mumin 2021-07-04T02:56:51Z Re: Is ping latency above 5ms normal? https://community.cisco.com/t5/wireless/is-ping-latency-above-5ms-normal/m-p/1584965#M67981 <HTML><HEAD></HEAD><BODY><P>Ping is not a reliable test for wireless. Wireless clients use "sleep mode" to save on battery and don't necessarily reply to pings with a high priority.</P><P>You could see a wireless client having high latency and then perfect latency if starting a huge file transfer.</P><P></P><P>Your problem is the lag noticed by the user. the ping itself is not a problem.</P><P></P><P>Nicolas.</P></BODY></HTML> Mon, 14 Mar 2011 13:56:59 GMT https://community.cisco.com/t5/wireless/is-ping-latency-above-5ms-normal/m-p/1584965#M67981 Nicolas Darchis 2011-03-14T13:56:59Z Re: Is ping latency above 5ms normal? https://community.cisco.com/t5/wireless/is-ping-latency-above-5ms-normal/m-p/1584966#M67982 <HTML><HEAD></HEAD><BODY><P>Thankyou Nicolas for replying.</P><P></P><P>The lag is the exact issue users are complaining about.  They connect to a Citrix Presentation Server 4.5 and lag is noticeable and sometimes they have a 5 second freeze!!!</P><P></P><P>Has anyone else seen this?</P></BODY></HTML> Mon, 14 Mar 2011 14:32:44 GMT https://community.cisco.com/t5/wireless/is-ping-latency-above-5ms-normal/m-p/1584966#M67982 Habibul Mumin 2011-03-14T14:32:44Z Re: Is ping latency above 5ms normal? https://community.cisco.com/t5/wireless/is-ping-latency-above-5ms-normal/m-p/1584967#M67983 <HTML><HEAD></HEAD><BODY><P>Strangely enough it happens a lot with Citrix more than any other application <span class="lia-unicode-emoji" title=":slightly_smiling_face:">🙂</span></P><P>The only way to get to the bottom is to dive deep in the problem. Checking if the lag happens on all laptops of an area at the same time (too much load). Checking interference level. Maybe some coverage hole areas ? Maybe laptops are roaming a lot and the roaming is not happening smoothly ... Could be a lot of things.</P></BODY></HTML> Mon, 14 Mar 2011 17:01:17 GMT https://community.cisco.com/t5/wireless/is-ping-latency-above-5ms-normal/m-p/1584967#M67983 Nicolas Darchis 2011-03-14T17:01:17Z Re: Is ping latency above 5ms normal? https://community.cisco.com/t5/wireless/is-ping-latency-above-5ms-normal/m-p/1584968#M67984 <HTML><HEAD></HEAD><BODY><P>I would say yes, higher than 5ms is not unusual.  Your output is quite normal.</P><P></P><P>Here is my output on FPING on a moving train. FPING sends a ping every 10ms.</P><P></P><P>03:26:59 : Reply[2126] from 10.0.0.13: bytes=185 time=3.1 ms TTL=127<BR />03:27:00 : Reply[2127] from 10.0.0.13: bytes=185 time=3.1 ms TTL=127<BR />03:27:00 : Reply[2128] from 10.0.0.13: bytes=185 time=3.1 ms TTL=127<BR />03:27:00 : Reply[2129] from 10.0.0.13: bytes=185 time=3.1 ms TTL=127<BR />03:27:00 : Reply[2130] from 10.0.0.13: bytes=185 time=3.1 ms TTL=127<BR />03:27:00 : Reply[2131] from 10.0.0.13: bytes=185 time=3.1 ms TTL=127<BR />03:27:00 : Reply[2132] from 10.0.0.13: bytes=185 time=3.1 ms TTL=127<BR />03:27:00 : Reply[2133] from 10.0.0.13: bytes=185 time=3.1 ms TTL=127<BR />03:27:00 : Reply[2134] from 10.0.0.13: bytes=185 time=3.2 ms TTL=127<BR />03:27:00 : Reply[2135] from 10.0.0.13: bytes=185 time=3.1 ms TTL=127<BR />03:27:00 : Reply[2136] from 10.0.0.13: bytes=185 time=3.5 ms TTL=127<BR />03:27:01 : Reply[2137] from 10.0.0.13: bytes=185 time=3.3 ms TTL=127<BR />03:27:01 : Reply[2138] from 10.0.0.13: bytes=185 time=3.0 ms TTL=127<BR />03:27:01 : Reply[2139] from 10.0.0.13: bytes=185 time=3.1 ms TTL=127<BR />03:27:01 : Reply[2140] from 10.0.0.13: bytes=185 time=3.0 ms TTL=127<BR />03:27:01 : Reply[2141] from 10.0.0.13: bytes=185 time=2.9 ms TTL=127<BR />03:27:01 : Reply[2142] from 10.0.0.13: bytes=185 time=10.9 ms TTL=127<BR />03:27:01 : Reply[2143] from 10.0.0.13: bytes=185 time=3.0 ms TTL=127<BR />03:27:01 : Reply[2144] from 10.0.0.13: bytes=185 time=3.1 ms TTL=127</P><P></P><P>Summary was:</P><P>Ping statistics for 10.0.0.13:<BR />    Packets: Sent = 4548, Received = 4534, Lost = 14 (0% loss)<BR />Approximate round trip times in milli-seconds:<BR />    Minimum = 2.7 ms, Maximum = 31.4 ms, Average = 3.2 ms</P><P></P><P>As long as your average is quite good and your packet loss is very low, you should be fine.</P><P></P><P>Not sure about the Citrix application. Haven't gotten around to using that on trains at the moment!</P><P></P><P></P><P>I typically find that the higher latency and the packet loss correlates nicely with when I roam.</P><P><BR />Good luck!</P><P></P><P>James</P></BODY></HTML> Wed, 16 Mar 2011 07:45:58 GMT https://community.cisco.com/t5/wireless/is-ping-latency-above-5ms-normal/m-p/1584968#M67984 jfraasch 2011-03-16T07:45:58Z Re: Is ping latency above 5ms normal? https://community.cisco.com/t5/wireless/is-ping-latency-above-5ms-normal/m-p/1584969#M67985 <HTML><HEAD></HEAD><BODY><P>Thankyou all for replying.</P><P></P><P>I have found document 'Optimizing Citrix technology for operation over wireless wide area networks'.  It states sensitivity to latency will cause lags but suggests solutions, I will be going over this and will post update.</P></BODY></HTML> Wed, 16 Mar 2011 09:23:22 GMT https://community.cisco.com/t5/wireless/is-ping-latency-above-5ms-normal/m-p/1584969#M67985 Habibul Mumin 2011-03-16T09:23:22Z