So, an update on this for those who are interested: VERY preliminary results so far, and I'm not even sure I am willing to hang my hat on them yet they are so "late-breaking", but:
- Upgrading Compacts on 6.5r1 to 6.6 *seems* to have largely mitigated this issue for CPE8Ks attached to such Compacts. - CPE8Ks attached to Compacts already running 6.6 that exchibited similar symptoms *seem* to be fixed...after turning 4x4TM4 off on the Compact. :-( The CPE8Ks on the 6.6 Compacts in 4x4 mode showed other weirdness in addition to the constant detaches, such as extremely low downlink throughput (CPE7Ks on the same Compact continued to perform just fine). Once 4x4 was disabled, throughput issue cleared right up, as did the CPE detaches. grrr. So I guess we continue to run without 4x4. It wasn't like we seemed to be getting much benefit from it anyway. We didn't see the SINRs budge at all on any of the CPEs. Maybe we are doing something wrong? The only thing I did to enable it was 'set deployment topology SingleCarrier4X4TM4', commit, and reboot. -- Nathan From: Nathan Anderson Sent: Wednesday, December 21, 2016 3:27 PM To: [email protected] Subject: RE: [Telrad] More CPE8K woes To be more precise, I should say that a CPE8K that didn't have the problem suddenly started experiencing it, and this coincided with the firmware upgrade of the eNB he attaches to. I can't definitively say that the eNB upgrade actually caused it. It's just an interesting data point that we definitely have CPE8Ks experiencing this issue across multiple eNB firmware versions. -- Nathan From: [email protected]<mailto:[email protected]> [mailto:[email protected]] On Behalf Of Nathan Anderson Sent: Wednesday, December 21, 2016 3:23 PM To: [email protected]<mailto:[email protected]> Subject: Re: [Telrad] More CPE8K woes EPC is 6.6 0729 We admittedly still have some ENB 6.5r1 (2616) running out there; when 6.6 came out, it wasn't soon after (2-3 months maybe?) we had managed to stop banging our heads into our desks trying to get everything to run smoothly and with good performance. We saw some reports of troubles with 6.6 shortly after release, esp. with 4x4 mode, which we didn't have to use if we upgraded, true, but it was one of the major draws of the release, so if we were going to hold off on implementing that, why rush to upgrade? It was nice to be able to have things run smoothly for a time and sit back and take a breath. But 6.5 ENB code doesn't seem to be to blame here; in fact, last night, I pushed 6.6 out to one ENB, which caused a CPE8K that previously was not exhibiting these symptoms to suddenly begin doing so today! -- Nathan From: [email protected]<mailto:[email protected]> [mailto:[email protected]] On Behalf Of Jeremy Austin Sent: Wednesday, December 21, 2016 3:12 PM To: [email protected]<mailto:[email protected]> Subject: Re: [Telrad] More CPE8K woes On Wed, Dec 21, 2016 at 2:08 PM, Nathan Anderson <[email protected]<mailto:[email protected]>> wrote: Is anybody else out there seeing their CPE8000s randomly drop off the network I only saw this on a 1xxx revision of EPC code, and it might have not been the same precise behavior. What ENB/EPC code are you running? -- Jeremy Austin (907) 895-2311 (907) 803-5422 [email protected]<mailto:[email protected]> Heritage NetWorks Whitestone Power & Communications Vertical Broadband, LLC Schedule a meeting: http://doodle.com/jermudgeon
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