CRC errors have been a symptom of noise on the Ethernet cable. If have a few AP's with non-shielded and they have some CRC errors, and others with shielded that have no CRC errors.
I suspect that shielded cable/connectors will quiet that down. -----Original Message----- From: Af [mailto:[email protected]] On Behalf Of Craig Schmaderer via Af Sent: Thursday, November 20, 2014 10:11 AM To: [email protected] Subject: Re: [AFMUG] How common are crc errors on pmp100 Sync is over power and no surge on the line except for the LTM1 built in surge. Remember, I am seeing this on all 4 radios, but like josh said, .0001%, so I was really wanting to see if other see this, and those that don't, do you use shielded cable and ground the drain at the bottom and never see this? Or do you use sync over timing port and never see errors, it seems weird that already about 50% think it is an issue and 50% think that it is normal? Craig R. Schmaderer CEO | Skywave Wireless, Inc. Ph: 402-372-1975 | Fax: 402-372-1058 Direct: 402-372-1052 -----Original Message----- From: Af [mailto:[email protected]] On Behalf Of Ken Hohhof via Af Sent: Thursday, November 20, 2014 12:04 PM To: [email protected] Subject: Re: [AFMUG] How common are crc errors on pmp100 That's not normal, unless it was some one time event. Is sync on the timing port or power port? If on power, do you have a Cat5 surge protector and what type? If it's a 300SS, get that out of there and put in something newer and better, or at least bypass it temporarily to see if that's causing the CRC errors. If the counters are not incrementing and it only occurs let's say when there's a nearby lightning strike, then nothing to worry about. -----Original Message----- From: Roland Houin via Af Sent: Thursday, November 20, 2014 11:37 AM To: John Seaman Subject: Re: [AFMUG] How common are crc errors on pmp100 I'd clear the counters and watch.. if the errors climb quickly, you have a problem.. it could have been a single event weeks ago that caused the problem. it would be nice if we had a mib to monitor the crc errors so we can tell when they happen. roland > This is a radio that has been up for 93 days, it is very heavy on > traffic, would you say there is an issue with this radio? It is on a clean tower that only I am on. There are 4 other canopy radios on this tower receiving sync from a CTM1. All radios are just CAT5e cable non shielded, length is about 180� tops. Also there is a PTP800 with lmr 400 ran along with it, I never noticed this before, all other radios are showing about the same number of CRC errors, is this expectable? Ethernet Link Detected :1 Ethernet Link Lost :0 Undersized Toss Count :0 inoctets Count :4054728244 inucastpkts Count :1954469296 Innucastpkts Count :56834740 indiscards Count :0 inerrors Count :231695 inunknownprotos Count :0 outoctets Count :3150773755 outucastpktsCount :1289988260 outnucastpkts Count :1597027 outdiscards Count :0 outerrors Count :0 RxBabErr :0 TxHbErr :0 EthBusErr :0 CRCError :231601 RcvFifoNoBuf :94 RxOverrun :0 LateCollision :0 RetransLimitExp :0 TxUnderrun :0 CarSenseLost :0 No Carrier :0 Craig R. Schmaderer CEO | Skywave Wireless, Inc. Ph: 402-372-1975 | Fax: 402-372-1058 Direct: 402-372-1052 <
