Thanks Matt,
I would switch to 450i hardware if you offered 3.65 ghz band.... Hence why
I am going to licensed gear.
On Mon, Nov 12, 2018 at 10:41 AM Matt Mangriotis via AF <af@af.afmug.com>
wrote:
> Yes, this is a CPU limitation with 450 hardware. The 450i radio has nearly
> 3x the PPS performance, and will eliminate this bottleneck.
>
>
>
> Sorry, I didn’t see this thread until now (traveling).
>
>
>
> Matt
>
>
>
>
>
> *From:* AF <af-boun...@af.afmug.com> *On Behalf Of * Ken Hohhof
> *Sent:* Monday, November 12, 2018 11:28 AM
> *To:* 'AnimalFarm Microwave Users Group' <af@af.afmug.com>
> *Subject:* [ External ] Re: [AFMUG] PTP 450 365 with Ethernet Issues
>
>
>
> Consensus seems to be it is 450 CPU limitation.
>
>
>
> But just checking, when you say this interfaces to a switch, your really
> mean switch, right? I ask because I once had a Mikrotik running on x86
> (ATOM) hardware that exhibited packet loss whenever we connected a Fast
> Ethernet radio to one of the router’s Gigabit ports. It was fine up
> through ROS 5.26, but when we tried to run 6.x FW, we got the packet loss
> and none of the suggested config changes would fix it, had had to roll back
> to 5.x FW (and ultimately replaced the router with a CCR). I assume the
> problem was something with the Intel NIC drivers.
>
>
>
>
>
> *From:* AF <af-boun...@af.afmug.com> *On Behalf Of *Sam Lambie
> *Sent:* Monday, November 12, 2018 11:11 AM
> *To:* AnimalFarm Microwave Users Group <af@af.afmug.com>
> *Subject:* Re: [AFMUG] PTP 450 365 with Ethernet Issues
>
>
>
> Frame utilization never gets above 75%. No errors at all on the RF side of
> things.
>
>
>
> On Mon, Nov 12, 2018 at 10:08 AM Bill Prince <part15...@gmail.com> wrote:
>
> Are you tracking % frame utilization? If the airtime is full, there is
> nowhere for the traffic to go.
>
> bp
>
> <part15sbs{at}gmail{dot}com>
>
>
>
> On 11/12/2018 8:54 AM, Sam Lambie wrote:
>
> The ethernet Interface is only capable of 100mbps. The Over the air is
> capable of 106mbps at 20mhz channel size. The Ethernet interface starts
> showing errors at around 60mbps and up. I am going with the CPU gacking at
> higher loads as the 450 series seems to have an overall limit on CPU
> power...
>
>
>
> On Mon, Nov 12, 2018 at 9:49 AM Ken Hohhof <af...@kwisp.com> wrote:
>
> So these are discards, but neither side is reporting CRC errors? That
> sounds like overflowing a buffer, or maybe there’s a config problem with
> pause frames?
>
>
>
> It would certainly seem possible that a traffic burst on a GigE interface
> could exceed what the air interface can transmit. I don’t know how big the
> buffers are in the PTP450.
>
>
>
> What is your max over-the-air throughput, is it less than 100 Mbps? What
> happens if you change the Ethernet interface to 100M? Although it looks
> like you are feeding it from a switch not a router port, so the router
> probably wouldn’t be aware of the capacity limitation so it can buffer the
> bursts. Personally I prefer to terminate backhaul links directly on a
> router port not a switch port.
>
>
>
> I think someone also suggested that it may be a CPU horsepower or
> packet-per-second limitation in the radio.
>
>
>
>
>
> *From:* AF <af-boun...@af.afmug.com> *On Behalf Of *Sam Lambie
> *Sent:* Monday, November 12, 2018 9:42 AM
> *To:* AnimalFarm Microwave Users Group <af@af.afmug.com>
> *Subject:* Re: [AFMUG] PTP 450 365 with Ethernet Issues
>
>
>
> I also ran the radio without a SS in place this weekend and got the same
> stats as before. No CRC errors. Never a boring day around here in Taos NM.
>
>
>
>
>
> On Fri, Nov 9, 2018 at 4:37 PM Ken Hohhof <af...@kwisp.com> wrote:
>
> Some definitely don’t like “Canopy sync” esp. on long cables. New
> “Cambium sync” seems to resolve that. But he says that he tried powering
> it from just a Cambium POE, which I assume means no sync-over-power.
>
>
>
> There was some discussion about this being an issue with reaching the
> limit of how many PPS the CPU can handle, rather than an Ethernet data
> error problem. Have you pinned down which it is? If it’s CPU horsepower,
> I would expect zero packet loss when the link was lightly loaded.
>
>
>
> I’m also assuming this is a constant dribbling error thing, not error free
> for a few days and then down for a minute. In which case I’d check the LBT
> event counter.
>
>
>
> *From:* AF <af-boun...@af.afmug.com> *On Behalf Of *ch...@wbmfg.com
> *Sent:* Friday, November 9, 2018 5:21 PM
> *To:* AnimalFarm Microwave Users Group <af@af.afmug.com>
> *Subject:* Re: [AFMUG] PTP 450 365 with Ethernet Issues
>
>
>
> Some Cambium devices do not like surge suppressors. That is why I created
> the CAT6 line of product.
>
>
>
> *From:* Lincoln (AFMUG Lists)
>
> *Sent:* Friday, November 9, 2018 10:45 AM
>
> *To:* AnimalFarm Microwave Users Group
>
> *Subject:* Re: [AFMUG] PTP 450 365 with Ethernet Issues
>
>
>
> Hi Sam;
>
> I see where you replaced the surge suppressor. I would try the following
> in this order. (1) Bypass the surge suppressor (possible, especially if
> you're out of lightning season). (2) Use the PoE brick and plug into a
> managed switch port so that you can monitor traffic and errors both on the
> Ethernet switch side and the PTP450 side.
>
> Use PingPlotter (free version) or any other graphing ping tool and ping
> both the switch and PTP 450 at the NOC. Compare traffic, graphs and SNMP
> results from all these sources.
>
> Set the Ethernet speed and duplex modes on both devices and allow to run.
> Noting the time when you made the changes. Clearing any errors prior to
> making the changes as well. See if the CRC errors or other are increasing
> significantly on the current settings. Continue making the changes and
> monitor errors. Which ever one is increasing the fastest (the device),
> most likely may lead you to the source of the problem.
>
> Check your syslogs as well. See if the syslogs are showing any activity
> or issues from the PTP450 and the switch. Check your RMON. If you are
> able to monitor Netflow or S-Flow on the switch. See what traffic is
> coming through. Use a tool like OPManager (free or trial) to monitor the
> switch and see what their built-in tools / graphs for traffic congestion
> shows.
>
> Make sure nothing else on your network is accessing your switch or PTP450
> BH at the NOC.
>
>
>
> Regards.
>
>
>
>
>
>
>
> On 08/11/2018 11:45 AM, Sam Lambie wrote:
>
> Guys,
>
>
>
> I have a backhaul that is driving me nuts. We have a 6.9 mile link from
> our NOC to the site. The Master at the NOC is exhibiting ehternet errors up
> the wazoo when loaded. During prime time, we are pushing about 70 mbps
> through the link. Wirelessly, everything is perfect, 106/19 with 99% link
> quality and no errors on the RF side of things.
>
> Yesterday I replace the main cable up to the radio, replaced the surge
> suppressor and even plugged in a Cambium power supply to bypass the CMM.
> Then I moved the LAN cable from it's switch to a new switch in case that
> port was choking, nothing has made a difference. I even changed out the
> radio for about an hour a few days ago with no difference.
>
>
>
> Frame utilization has never spiked beyond 68% but the CPU is pegged during
> peak time at 100%
>
>
>
> Any suggestions? or need any other screen shots?
>
>
>
> thanks!
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> --
>
> --
> *Sam Lambie*
> Taosnet Wireless Tech.
> 575-758-7598 Office
> www.Taosnet.com
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> *Sam Lambie*
> Taosnet Wireless Tech.
> 575-758-7598 Office
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> *Sam Lambie*
> Taosnet Wireless Tech.
> 575-758-7598 Office
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> Taosnet Wireless Tech.
> 575-758-7598 Office
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