I’d have to go review the manual, but there is an Advanced QoS key. I’ve not spent enough time in the radios themselves to recall what is what.
Daniel White Managing Director – Hardware Distribution Sales ConVergence Technologies Cell: +1 (303) 746-3590 <mailto:dwh...@converge-tech.com> dwh...@converge-tech.com From: Af [mailto:af-boun...@afmug.com] On Behalf Of Eric Kuhnke Sent: Monday, April 18, 2016 10:58 AM To: af@afmug.com Subject: Re: [AFMUG] PTP820S 2+0 configuration 820 needs a key for layer 2 QoS / DSCP? On Mon, Apr 18, 2016 at 8:47 AM, Daniel White <afmu...@gmail.com <mailto:afmu...@gmail.com> > wrote: You may need to purchase one of the extra software keys like frame cut-thru or QoS if you don't have that enabled. I'm sure Cambium should be able to assist. Daniel White Managing Director – Hardware Distribution Sales ConVergence Technologies Cell: +1 (303) 746-3590 <tel:%2B1%20%28303%29%20746-3590> dwh...@converge-tech.com <mailto:dwh...@converge-tech.com> > -----Original Message----- > From: Af [mailto:af-boun...@afmug.com <mailto:af-boun...@afmug.com> ] On > Behalf Of Craig Baird > Sent: Monday, April 18, 2016 9:28 AM > To: af@afmug.com <mailto:af@afmug.com> > Subject: Re: [AFMUG] PTP820S 2+0 configuration > > We haven't been able to determine this. Where we're seeing it is on a pair of > Exfo test sets. We're trying to qualify a new 50 Mbps dedicated circuit using > RFC 2544 testing using the Exfos. Tests are failing, reporting lost frames. > The > confusing thing is that our counters on both radios and switches are fairly > clean. The radios report zero "defective blocks". The only errors I am > seeing > that I wonder about show up on both the radio and ethernet sides. On one > radio, I see 38 "TX length error frame count" errors since Saturday on the > ethernet port. I also have 38 "RX length error frame count" > errors on the radio. On the other side, I have 39 "RX length error frame > count" errors on the ethernet. None on the radio side. > > However, I question whether these errors are related to what I'm seeing in > any way. I tested another leg of this circuit the other day. Identical > radios. It > tested clean, but was also showing some of these same errors. > > Craig > > > > Quoting David Milholen <dmilho...@wletc.com <mailto:dmilho...@wletc.com> >: > > > Are these frame losses on the Radio side or the ethernet side? > > > > > > On 4/16/2016 10:32 AM, Craig Baird wrote: > >> So a few months ago we purchased an 11 GHz PTP820S 2+0 link. We > >> recently installed it, and it appears to be working fine, aside > >> from a little bit of frame loss that we are investigating. While > >> looking into this frame loss issue, I stumbled across something > >> that concerns me. On Cambium's support forum there is a post that > >> states that when dealing with 2+0 links both radios must be in the > >> same sub-band. There is no explanation of why this is the case. > >> In our situation, the radios are in separate sub-bands. When we > >> did the frequency coordination, the only two 80 MHz channels > >> available were in different sub-bands. I passed those channels > >> along to our vendor who worked with Cambium to get a BOM. At no > >> point did anyone say that this was a problem. So now, fast forward > >> a few months, and I stumble across this post, and now I'm wondering > >> what the implications will be. Both links are up and running. > >> Signal on both is right where it should be (-39 on one, -40 on the > >> other). Both are running at maximum modulation. There are no > >> defective blocks shown on the radio interfaces. There is no > >> indication that this sub-band mismatch is causing any issues, aside > >> from possibly this frame loss thing. However, if I mute the radios > >> on one link, the frame loss persists, so I don't think it's related. > >> > >> In case it matters, the two links are oppositely polarized. On one > >> side we've got a 2 foot dish with an OMT combining the radios. On > >> the other side, we've got an 8 foot dual-pol dish. > >> > >> So I'm wondering if anyone knows why Cambium says that you can't > >> use radios from different sub-bands. Are we in for trouble at some > >> point? > >> > >> Craig > >> > >> > > > > -- > > > --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus
