<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Jun 12, 2018, at 12:24 PM, Toke Høiland-Jørgensen <<a href="mailto:toke@toke.dk" class="">toke@toke.dk</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">Pete Heist <</span><a href="mailto:pete@heistp.net" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">pete@heistp.net</a><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">> writes:</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><blockquote type="cite" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">This is an appeal to anyone who has access to a NanoStation M5 and a little time to try to reproduce this problem and add to this post:<br class=""><br class=""><a href="https://community.ubnt.com/t5/airMAX-Installation/NanoStation-M5-ping-spikes-about-once-per-second-even-just-to/td-p/2358704" class="">https://community.ubnt.com/t5/airMAX-Installation/NanoStation-M5-ping-spikes-about-once-per-second-even-just-to/td-p/2358704</a><br class=""></blockquote><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">Does this only happen with stock firmware? I think I have reflashed all</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">of mine...</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""></div></blockquote></div><br class=""><div class="">Unfortunately I haven’t confirmed that, because afaik one can no longer flash unsigned firmware on AirOS devices with signed firmware (since 6.0.6 or so) without opening the case and attaching a serial cable / using tftp, but these devices aren’t mine. I just found this thread so maybe I could try to play with first downgrading to 6.0.6, then to 6.0.6 beta, then to unsigned, just don’t need to brick the device:</div><div class=""><br class=""></div><div class=""><a href="https://community.ubnt.com/t5/airOS-Software-Configuration/AirOS-v6-0-6-Firmware-Issues-and-Solutions-Downgrade-Path-and-XM/m-p/1996679#M47254" class="">https://community.ubnt.com/t5/airOS-Software-Configuration/AirOS-v6-0-6-Firmware-Issues-and-Solutions-Downgrade-Path-and-XM/m-p/1996679#M47254</a></div><div class=""><br class=""></div><div class="">If you do have time to just try a high-rate ping to the Ethernet adapter with a recent OpenWRT/LEDE installed, that would tell me something:</div><div class=""><br class=""></div><div class="">sudo ping -c 5000 -i 0.001 nsm5</div><div class=""><br class=""></div><div class="">If it reproduces, you’ll see isochronous spikes of either 20 or 40ms around once every 900-1000ms. Might be easier to see if you add preload with “-l 100”, but you would see them either way. If you don’t have time, no sweat… :)</div><div class=""><br class=""></div></body></html>