..... That too shall pass. On Jul 30, 2017 6:53 PM, "Jeremy" <jeremysmi...@gmail.com> wrote:
> We have about 20 AF5X, 1 AF24, and nearly 100 Rocket Prisms. They all > negotiate at 1G, but we buy them in bulk and haven't purchased any for > quite some time. So it is likely that this is something with the new > revision. > > On Sun, Jul 30, 2017 at 7:35 AM, Adair Winter <ada...@amarillowireless.net > > wrote: > >> How many is many? >> >> We have at least 50 airfiber links deployed and have been using the >> GigE-apc for over two years so I'm not sure what all revs we have. >> >> We never seen the issues if we use the transector aplu >> >> On Jul 30, 2017 2:01 AM, "Jeremy" <jeremysmi...@gmail.com> wrote: >> >>> All of my AF5Xs and AF24 are running on the older version of the >>> GIGE-POE-APC and they work fine at gigabit. We have MANY. Just FYI. >>> >>> On Sat, Jul 29, 2017 at 9:28 PM, Chuck McCown <ch...@wbmfg.com> wrote: >>> >>>> Thanks, all info like this is very helpful. GigE is more akin to RF >>>> engineering than digital. >>>> >>>> *From:* Adair Winter >>>> *Sent:* Saturday, July 29, 2017 8:19 PM >>>> *To:* af@afmug.com >>>> *Subject:* Re: [AFMUG] new GigE-APC issues >>>> >>>> If we can feed you any data to help troubleshoot, please let me know >>>> what that would be. in several places we've had to remove the modules. It >>>> only seems like it's airfiber 24's and 5x's we ever have problems with. I >>>> mostly chock it up them and possibly crummy ethernet ports. When we have >>>> trouble it doesn't seem to matter what cable we use or how long the run is >>>> it. We have lots on UBNT Carrier cable and recently many on Primus CAT6, >>>> doesn't seem to make a lot of difference. Removing the modules always fixes >>>> the CRC errors though. >>>> >>>> On Sat, Jul 29, 2017 at 9:10 PM, <ch...@wbmfg.com> wrote: >>>> >>>>> It tests perfect on the lab.... but as we all know.... >>>>> >>>>> Full speed, no CRC or any other type of errors. Long cables, short >>>>> cables etc etc. >>>>> >>>>> I generally only hear from cambium users. And not that much, so it is >>>>> not happening on all of them, but some. >>>>> >>>>> I do have 3 components coming that have better specs that I am >>>>> switching to. >>>>> It will improve NEXT and return loss. >>>>> If that is the cause then that will be the fix. >>>>> >>>>> There is also a thing in the POE inserters called the "Bob Smith" or >>>>> BS termination. >>>>> There really was a guy named Bob Smith that did the original >>>>> calculation. >>>>> >>>>> There is another guy that has more recently published a different >>>>> mathematical treatment of the BS termination that uses a different >>>>> impedance. I am going to try this and see if it improves things as well. >>>>> >>>>> -----Original Message----- From: George Skorup >>>>> Sent: Saturday, July 29, 2017 4:10 PM >>>>> To: af@afmug.com >>>>> Subject: Re: [AFMUG] new GigE-APC issues >>>>> >>>>> I had very few issues with the previous ones. The RJ45 tab facing at >>>>> the >>>>> PCB was a minor inconvenience. Sync over power + gigabit didn't play >>>>> nice with those, but GigE otherwise worked fine. >>>>> >>>>> I tested a couple prototypes of the new revision for Chuck. Sync over >>>>> power + gigabit with a PowerInjector+Sync and a 450 AP worked fine. >>>>> Then >>>>> we replaced that AP with a 450i because of the 450's PPS limit. I >>>>> didn't >>>>> notice it at the time, but the 450i never came up at gigabit. We didn't >>>>> really need >80Mbps downlink anyway. It would usually run about 55-60 >>>>> at >>>>> night which was where the 450 was crapping out. Well, more like 50 and >>>>> 9-10k PPS. >>>>> >>>>> Now I've got some ePMP GPS radios for PTP (not for sync, just the GigE >>>>> interface). Same symptoms as the UBNT prism thingamajig. The link comes >>>>> up at gig, but flaps and constant FCS errors. The 450i just goes, gig, >>>>> gig, gig, nope.. 100mbps at bootup. >>>>> >>>>> Pulling the SS out makes it work, but I can't do that. We lost that >>>>> 450i >>>>> AP because someone went and bypassed the SS because they were >>>>> apparently >>>>> concerned about the CRC errors and didn't f'ing tell me about it, even >>>>> after I said I'd debug it on Monday. Welp, a storm rolled in the Friday >>>>> before and.. there went the AP. Good job! In Steve Jones' words, I have >>>>> only one comment: fuckwits. >>>>> >>>>> I'd say just stay tuned. Chuck is working on it. As he put it, GigE is >>>>> a >>>>> different animal. NEXT, FEXT and all that fun stuff. >>>>> >>>>> On 7/29/2017 4:20 PM, Matt wrote: >>>>> >>>>>> Seeing same issues on Gigabit ethernet ports with Cambium PxP450i and >>>>>> also SAF licensed gear. Shorter cable runs help but just not possible >>>>>> on some towers. Bypassing the GigE-APC always fixes it. >>>>>> >>>>>> >>>>>> On Sat, Jul 29, 2017 at 12:40 PM, George Skorup >>>>>> <george.sko...@cbcast.com> wrote: >>>>>> >>>>>>> I think I've seen this mentioned a few times now. Maybe Steve and a >>>>>>> couple >>>>>>> others? >>>>>>> >>>>>>> The latest revision (D?) is causing CRC/FCS errors and random link >>>>>>> drops. >>>>>>> Taking the SS out makes all problems go away. >>>>>>> >>>>>>> Definitely more issues at gigabit. I have multiple sites with some >>>>>>> UBNT and >>>>>>> ePMP stuff (no sync over power). Some I've turned off gigabit >>>>>>> negotiation >>>>>>> and get only a few FCS errors here and there. Running gigabit sees >>>>>>> lots more >>>>>>> errors and adds a 2-3 second link loss randomly which is a big issue >>>>>>> on a >>>>>>> PTP link. >>>>>>> >>>>>>> Got a couple sites with 450i APs. One that I was working with the >>>>>>> other day >>>>>>> is a new radio (because the old one blew up). New cable, new >>>>>>> GigE-APC, new >>>>>>> PacketFlux PowerInjector. The link tries to negotiate gigabit, but >>>>>>> falls >>>>>>> back to 100 after a few tries. Turned off sync over power just to >>>>>>> see and >>>>>>> still no gigabit. Remove the SS and it works fine. >>>>>>> >>>>>>> Floating the shield makes no difference. Running the site on battery >>>>>>> also >>>>>>> makes no difference. Some FM sites, some water towers, some >>>>>>> elevators, some >>>>>>> regular towers with only our stuff on it. >>>>>>> >>>>>>> The stuff I was working with yesterday is a new UBNT Prism PTP >>>>>>> radio, new >>>>>>> GigE-APC, new CCR1009. This site also has an Exalt G2-11 fed by an >>>>>>> older >>>>>>> GigE-POE-APC and I get no errors on that. It used to be plugged into >>>>>>> a >>>>>>> MikroTik CRS210 and I didn't see any errors on that either. >>>>>>> >>>>>>> I had far fewer issues with the older cards. Unfortunately I don't >>>>>>> think I >>>>>>> have any good ones left to do a comparison. I do have a couple that >>>>>>> got some >>>>>>> water in the jack, maybe I can clean those up for testing. I've used >>>>>>> maybe >>>>>>> 10 of the new ones now and they all seem to be causing issues. And >>>>>>> before >>>>>>> you ask, yes, I've tried dumb gigabit switches at a few sites >>>>>>> temporarily >>>>>>> and still see the random link loss with the SS in line. >>>>>>> >>>>>>> >>>>>>> >>>>> >>>> >>>> >>>> -- >>>> >>>> Adair Winter >>>> VP, Network Operations / Co-Owner >>>> Amarillo Wireless | 806.316.5071 <(806)%20316-5071> >>>> C: 806.231.7180 <(806)%20231-7180> >>>> http://www.amarillowireless.net >>>> <http://www.amarillowireless.net> >>>> >>>> >>>> >>> >>> >
