My understanding is that there are known issues with the internal architecture of touchswitches in the case where you have a gigabit uplink feeding 100Mb/s ports. If a burst of traffic fills one of the 100Mb/s ports, the switch will start discarding input packets (even if they aren't for the full interface) until the 100Mb/s interface becomes non-full. In addition, the buffer sizes in the switch are so small that the above can happen even with <100Mb/s of traffic going through the switch if the traffic is at all bursty - that is, you have >100Mb/s even for a very short period.
The goal is to get one or more of these on the bench and throw some traffic at it to prove this behavior, so I can replicate the test on any switch chipsets I evaluate here. I don't want to repeat this failure if I decide to actually ship some sort of integrated switch in a product. I know a lot of people yanked these out of their network, my hope was someone had a pile of them they hadn't surplused/discarded. Because these are still shipping products, the ebay listings tend to be mostly new devices, and the used ones are few and far between. Oh, and the ubnt community knows about it: https://community.ubnt.com/t5/ToughSwitch/Toughswitch-Pro-dropping-pings/td-p/564697 https://community.ubnt.com/t5/ToughSwitch/Low-throughput-on-Toughswitch/m-p/486797#U486797 https://community.ubnt.com/t5/ToughSwitch/Has-the-ToughSwitch-been-fixed-from-2-years-ago/td-p/1578675 On Sat, Jun 2, 2018 at 11:21 AM, Timothy Steele <[email protected]> wrote: > What's issues you seeing? You might try the WISP auction group on Facebook > > > On Fri, Jun 1, 2018, 6:30 PM Forrest Christian (List Account) < > [email protected]> wrote: > >> I would like to get a collection of toughswitches for my bench to >> basically be able to replicate the issues with them - so I can verify any >> switch product I may or may not be working on doesn't suffer the same >> issues. >> >> Does anyone have some of these headed for the dumpster that I can salvage? >> >> >> -- >> *Forrest Christian* *CEO**, PacketFlux Technologies, Inc.* >> Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602 >> <https://maps.google.com/?q=3577+Countryside+Road,+Helena,+MT+59602&entry=gmail&source=g> >> [email protected] | http://www.packetflux.com >> <http://www.linkedin.com/in/fwchristian> >> <http://facebook.com/packetflux> <http://twitter.com/@packetflux> >> >> -- *Forrest Christian* *CEO**, PacketFlux Technologies, Inc.* Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602 [email protected] | http://www.packetflux.com <http://www.linkedin.com/in/fwchristian> <http://facebook.com/packetflux> <http://twitter.com/@packetflux>
