Had a gigantic burst of errors last night. 13000 crc in minute. Today I notice that I am capped and interleaved. Seems fair enough but the DLM might have been kind enough to wait to see if it happened again. What puzzles me are the stats and bit loading. The snr downstream is only 6.4. With the attainable at 81864 I would have expected a value about 3db higher. e,g 9-10. Is this a strange or normal?
Below are the bit loadings and day or so before with a 64Mb/s self cap and those now with the DLM imposed cap of 68Mb/s The bit loadings with the DLM 68mb/s cap look rather like an 80mb/s sync bit loadings. Again is this normal or odd? The value of snr (6.4) suggests a 80Mb/s sync? it certainly is all odd to me
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new stats are
xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 21604 Kbps, Downstream rate = 81864 Kbps
Bearer: 0, Upstream rate = 20000 Kbps, Downstream rate = 68901 Kbps
Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode(0x0)
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Down Up
SNR (dB): 6.4 6.0
Attn(dB): 17.4 0.0
Pwr(dBm): 13.2 6.8
the bit loadins are: