Latency

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  • Question
  • Updated 7 months ago
Having an issue with latency with computer and Flex 6600. I have 6600 in storage bay of RV with a 40' cat 6 running to my Pepwave Surf SOHO MK III router. I get a delay of sometimes around 3 to 5 seconds. For example if I press vox button computer it takes 3 to 5 seconds for it to activate. I have tried replacing cable. I even get the latency when going direct to radio to computer. When I do that I have to use a USB/Lan adapter as the Surface Pro I am using does not have a direct lan connection. I also see my connection go from excellent to good,fair,poor and back up again. This is really annoying here. Any thoughts??

Thanks,
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WW1SS - Steve

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Posted 7 months ago

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Ted VE3TRQ

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Wow, that’s an insane amount of latency. If you are comfortable using WireShark or tcpdump, monitor the network to try to ascertain the source of the latency or delay. You may need to set up a router monitor port if it supports that.
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Steve K9ZW, Elmer

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@Steve WW1SS - same latency confirmed if you bypass the CAT6e wire with another cable?

What if you take your Surface Pro physically near the radio and use a short patch cable?

And do you have another computer handy to try?

Is every other control showing the same 3000-5000 millisecond delay?

Same if you ping the radio?

73

Steve
K9ZW
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Burch - K4QXX

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I am wondering if you are getting some type of interference from your motorhome or a nearby motorhome that is affecting the network?  I know on my old travel trailer I couldn't use any radio (not just flex) when I had my AC unit running.  Tons of interference.    Have you changed your router or any other network equipment lately?  Or changed locations with your motorhome?  From previous postings, I know this setup has worked for you in the past.

Burch
K4QXX
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SteveM

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When you connect PC direct to radio, is the link speed negotiated to 1G? If so, try down-shifting to 100M.
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Ted VE3TRQ

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This may be an issue with a Maestro, but certainly should not affect a 6600. I have connected my 6600M to many devices with never an issue.
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WW1SS - Steve

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Got new Maestro and direct connect and no issue with delay. Tried it on 2 different laptops and even went through netgear switch bypassing router and same issue. Only common thing at this point is the Usb/lan converter..Found setting in device manager to enable large MTU. That helped a bit . Gonna try a new USB/Lan adapter
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Ted VE3TRQ

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I really dislike this trend for all devices to have WiFi only, and no Ethernet. That causes all sorts of issues when poorly designed, oftentimes cheap, adapters get pressed into service to provide wired Ethernet. Apple started that trend with the MacBook (and iPad), and it has spread to many (most?) laptops.
(Edited)
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Dudley - WA5QPZ, Elmer

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I have had driver issues in the past with USB/LAN. adapters, go to the original vendor for the most current adapter driver.

Dudley
WA5QPZ
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WW1SS - Steve

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Thanks Dudley... Ill give that a try
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Mark - WS7M

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I have had good and bad, and very bad USB LAN adapters.  Yours might be fixed by a driver update but be prepared to replace it and spend more money to get a good brand name.