Are you using Sync over Power on this AP? There is a known problem with the way that the sync over power works. It occurs when the cables to the AP are run parallel and tight to steel. If you tape the cables directly to the tower leg, you will almost always have a problem with CRC errors.
The power supply wiring for the 430 product fixed the issue, but they went back to the original wiring in the 450. A couple of ways to fix the issue: a) Isolate the cables from the steel using standoffs. b) Swap one wire each on the blue and brown pairs - Last Mile Gear had a note on the alternative wiring method at one time. I’m not crazy about it since it makes for a odd looking connector and the next guy who has to work on it is likely to cut it off and put it on ‘right’. The cable will also fail on any Ethernet tester, making it difficult to convince anyone that the cable is correct. c) Turn off Sync over Power and use an alternative sync method - iGPS, Syncpipe Parasitic, etc. Mark > On Nov 20, 2014, at 1:24 PM, Bill Prince via Af <[email protected]> wrote: > > We don't often see CRC errors on any of our APs, FSK, OFDM, or MIMO. > > If you're in lightning territory, check to see if these are coincident with > lightning strikes. > > bp > <part-15@SkylineBroadbandService> > > On 11/20/2014 9:24 AM, Craig Schmaderer via Af wrote: >> 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 >> > >
