I had the same problem when my antenna took on a bunch of water from a bad water seal. I'm also noticing all your signals are backwards? RSSI 0 should be your strongest signal on your uplink. It looks like you've got them backwards.
From: Af [mailto:[email protected]] On Behalf Of Greg Osborn Sent: Wednesday, June 17, 2015 2:32 PM To: [email protected] Subject: Re: [AFMUG] Cambium 320 Poor CINR and mcs after awhile Here we go, same ap a few hours later. arameters marked with (*) will display accurate values only when that link is passing traffic. CPE MAC Address Uplink Downlink RSSI 0* (in dBm) RSSI 2* (in dBm) CINR* (in dB) MCS* RSSI (in dBm) Zone CINR (in dB) MIMO Type* MCS* 64:ed:57:31:7f:e0 -82 -61 28 QAM64 5/6 -68 6 MIMO A QPSK 1/2 64:ed:57:31:84:46 -66 -60 34 QAM64 5/6 -73 8 MIMO A QPSK 1/2 64:ed:57:31:84:58 -94 -72 24 QAM64 3/4 -88 -3 MIMO A QPSK 1/2 64:ed:57:31:84:f6 -77 -60 34 QAM64 5/6 -71 6 MIMO A QPSK 1/2 64:ed:57:31:86:52 -69 -59 34 QAM64 5/6 -66 7 MIMO A QPSK 1/2 64:ed:57:31:87:30 -66 -58 34 QAM64 5/6 -68 9 MIMO A QPSK 1/2 64:ed:57:31:87:ae -90 -67 29 QAM64 5/6 -80 9 MIMO A QPSK 1/2 64:ed:57:31:88:4c -62 -85 34 QAM64 5/6 -45 10 MIMO A QPSK 1/2 64:ed:57:31:8a:90 -82 -62 34 QAM64 5/6 -67 11 MIMO A QPSK 1/2 64:ed:57:31:8c:f2 -69 -64 30 QAM64 5/6 -84 7 MIMO A QPSK 1/2 64:ed:57:31:8d:08 -72 -61 34 QAM64 5/6 -80 20 MIMO A QAM64 1/2 64:ed:57:31:8d:70 -83 -66 31 QAM64 5/6 -70 9 MIMO A QPSK 1/2 64:ed:57:31:8e:da -76 -68 30 QAM64 5/6 -81 7 MIMO A QPSK 1/2 64:ed:57:40:7c:16 -61 -82 34 QAM64 5/6 -61 10 MIMO A QPSK 1/2 From: Af [mailto:[email protected]] On Behalf Of Greg Osborn Sent: Wednesday, June 17, 2015 1:40 PM To: [email protected] Subject: Re: [AFMUG] Cambium 320 Poor CINR and mcs after awhile Yeah, we have visited man of them. That portion was at least correct. From: Af [mailto:[email protected]] On Behalf Of That One Guy /sarcasm Sent: Wednesday, June 17, 2015 10:36 AM To: [email protected] Subject: Re: [AFMUG] Cambium 320 Poor CINR and mcs after awhile have you checke dthe installs, are these things mounted in the correct orientation? On Wed, Jun 17, 2015 at 8:50 AM, Greg Osborn <[email protected]> wrote: Yeah, it’s just the downlink that becomes a problem. All is good on what we have below at the moment. I should have just waited to take a before reboot and after screenshot. From: Af [mailto:[email protected]] On Behalf Of Eric Muehleisen Sent: Wednesday, June 17, 2015 9:23 AM To: [email protected] Subject: Re: [AFMUG] Cambium 320 Poor CINR and mcs after awhile Uplink looks good. Does this only affect downlink? First thought would be self-interference but that usually doesn't show up in the radio stats but rather packet loss in the service flow stats. During a maintenance window, shut down all your AP's and run a spectrum analysis one-by-one. I would suspect the noise floor to increase during peak times. On Wed, Jun 17, 2015 at 7:57 AM, Greg Osborn <[email protected]> wrote: We have 3 sites with Cambium 320 gear. 2 with Omni’s that don’t behave oddly. The other has 4 AP’s and requires a reboot of the AP’s after a while because the CINR values and modulations will tank. We are not using a ABAB config. It doesn’t seem to be tied to sync or interference, as far as I can tell. Yes there are some crappy installs here. We acquired them through a failed startup. Below is what it will look like when good. When it is bad, cut the CINR values to 12ish or less with a QPSK x/x. Signal will still be good. Any ideas on the reasoning? Parameters marked with (*) will display accurate values only when that link is passing traffic. CPE MAC Address Uplink Downlink RSSI 0* (in dBm) RSSI 2* (in dBm) CINR* (in dB) MCS* RSSI (in dBm) Zone CINR (in dB) MIMO Type* MCS* 64:ed:57:31:7f:e0 -83 -66 28 QAM64 5/6 -69 24 MIMO A QAM64 2/3 64:ed:57:31:84:46 -69 -64 34 QAM64 5/6 -74 24 MIMO A QAM64 2/3 64:ed:57:31:84:58 -95 -74 23 QAM64 2/3 -88 11 MIMO A QPSK 1/2 64:ed:57:31:84:f6 -79 -61 34 QAM64 5/6 -71 26 MIMO A QAM64 3/4 64:ed:57:31:86:52 -67 -58 34 QAM64 5/6 -66 28 MIMO B QAM64 5/6 64:ed:57:31:87:30 -67 -58 34 QAM64 5/6 -68 28 MIMO A QAM64 5/6 64:ed:57:31:87:ae -93 -68 29 QAM64 5/6 -80 18 MIMO A QAM16 1/2 64:ed:57:31:88:4c -62 -87 33 QAM64 5/6 -45 28 MIMO B QAM64 5/6 64:ed:57:31:8a:90 -75 -58 34 QAM64 5/6 -68 28 MIMO A QAM64 5/6 64:ed:57:31:8c:f2 -77 -64 29 QAM64 5/6 -88 16 MIMO A QAM16 1/2 64:ed:57:31:8d:70 -87 -64 33 QAM64 5/6 -71 27 MIMO A QAM64 5/6 64:ed:57:31:8e:da -78 -69 29 QAM64 5/6 -81 17 MIMO A QAM16 1/2 64:ed:57:40:7c:16 -61 -79 34 QAM64 5/6 -61 28 MIMO B QAM64 5/6 -- Thank you, Greg Osborn Tech Support and Field Service Manager OnlyInternet.Net 1.800.363.0989 <http://www.facebook.com/onlyinternet> <http://www.twitter.com/oibw> <http://www.onlyinternet.net/> -- If you only see yourself as part of the team but you don't see your team as part of yourself you have already failed as part of the team.
