My C887VA-K9 is connected to OpenReach VDSL2 (a Huawei cabinet with G.INP enabled). Everything runs normally for about 24 hours, then suddenly the Reed-Solomon error count jumps from a few hundred per minute to many hundreds of thousands or more than a million per minute. After about an hour with the errors per minute in the millions, the modem loses sync and reconnects.
I have had the line monitored and I have tried another router (not Cisco) as a test. Everything indicates the line is behaving normally and the huge jump in errors is caused by something in the 887. If I stop and restart the interface while the error count is high, it drops down to low levels after the reconnection.
I have tried different levels of modem firmware and they do make a difference. With A2pv6C039t, I can run more than 24 hours before the huge jump in errors starts. With A2pv6C039m, I can only run a few hours before this happens. With A2pv6C035j, I cannot sync at all.
I don't know what else to try. Could this be a hardware problem with my 887?
Here is the output from 'show controller vdsl 0' while the errors are happening:
Controller VDSL 0 is UP
Daemon Status: Up
XTU-R (DS) XTU-C (US)
Chip Vendor ID: 'BDCM' 'BDCM'
Chip Vendor Specific: 0x0000 0xA48C
Chip Vendor Country: 0xB500 0xB500
Modem Vendor ID: 'CSCO' ' '
Modem Vendor Specific: 0x4602 0x0000
Modem Vendor Country: 0xB500 0x0000
Serial Number Near: FCZ194271RC C887VA-K 15.5(3)M
Serial Number Far:
Modem Version Near: 15.5(3)M
Modem Version Far: 0xa48c
Modem Status: TC Sync (Showtime!)
DSL Config Mode: AUTO
Trained Mode: G.993.2 (VDSL2) Profile 17a
TC Mode: PTM
Selftest Result: 0x00
DELT configuration: disabled
DELT state: not running
Full inits: 2
Failed full inits: 0
Short inits: 0
Failed short inits: 0
Firmware Source File Name
-------- ------ ----------
VDSL user config flash:VA_A_39t_B_35j_24m
Modem FW Version: 160331_0352-4.02L.03.A2pv6C039t.d24m
Modem PHY Version: A2pv6C039t.d24m
Trellis: ON ON
SRA: enabled enabled
SRA count: 1 1
Bit swap: enabled enabled
Bit swap count: 50007 869
Line Attenuation: 19.5 dB 0.0 dB
Signal Attenuation: 0.0 dB 0.0 dB
Noise Margin: 8.1 dB 6.4 dB
Attainable Rate: 81517 kbits/s 14358 kbits/s
Actual Power: 13.9 dBm 7.7 dBm
Per Band Status: D1 D2 D3 U0 U1 U2 U3
Line Attenuation(dB): 14.3 36.6 55.6 7.0 31.0 46.4 N/A
Signal Attenuation(dB): 16.1 36.3 55.6 7.0 30.1 45.6 N/A
Noise Margin(dB): 8.6 7.8 7.9 6.5 6.4 6.4 N/A
Total FECC: 97137344 511
Total ES: 67 94
Total SES: 35 0
Total LOSS: 1 0
Total UAS: 204 170
Total LPRS: 0 0
Total LOFS: 0 0
Total LOLS: 0 0
DS Channel1 DS Channel0 US Channel1 US Channel0
Speed (kbps): 0 73998 0 14343
SRA Previous Speed: 0 73998 0 14343
Previous Speed: 0 73998 0 14343
Reed-Solomon EC: 1509 4412856 0 351
CRC Errors: 441 441 104 104
Header Errors: 0 0 0 0
Interleave (ms): 3.00 0.00 0.00 0.00
Actual INP: 4.01 55.00 0.00 0.00
Training Log : Stopped
Training Log Filename : flash:vdsllog.bin
and here is the output after restarting the interface:
Controller VDSL 0 is UP
Daemon Status: Up
XTU-R (DS) XTU-C (US)
Chip Vendor ID: 'BDCM' 'BDCM'
Chip Vendor Specific: 0x0000 0xA48C
Chip Vendor Country: 0xB500 0xB500
Modem Vendor ID: 'CSCO' ' '
Modem Vendor Specific: 0x4602 0x0000
Modem Vendor Country: 0xB500 0x0000
Serial Number Near: FCZ194271RC C887VA-K 15.5(3)M
Serial Number Far:
Modem Version Near: 15.5(3)M
Modem Version Far: 0xa48c
Modem Status: TC Sync (Showtime!)
DSL Config Mode: AUTO
Trained Mode: G.993.2 (VDSL2) Profile 17a
TC Mode: PTM
Selftest Result: 0x00
DELT configuration: disabled
DELT state: not running
Full inits: 3
Failed full inits: 0
Short inits: 0
Failed short inits: 1
Firmware Source File Name
-------- ------ ----------
VDSL user config flash:VA_A_39t_B_35j_24m
Modem FW Version: 160331_0352-4.02L.03.A2pv6C039t.d24m
Modem PHY Version: A2pv6C039t.d24m
Trellis: ON ON
SRA: enabled enabled
SRA count: 1 2
Bit swap: enabled enabled
Bit swap count: 855 4
Line Attenuation: 19.4 dB 0.0 dB
Signal Attenuation: 0.0 dB 0.0 dB
Noise Margin: 8.0 dB 6.2 dB
Attainable Rate: 81101 kbits/s 14552 kbits/s
Actual Power: 13.8 dBm 7.7 dBm
Per Band Status: D1 D2 D3 U0 U1 U2 U3
Line Attenuation(dB): 14.3 36.5 55.5 7.0 31.0 46.2 N/A
Signal Attenuation(dB): 16.1 36.2 55.6 7.0 30.2 45.7 N/A
Noise Margin(dB): 8.4 7.7 7.8 6.4 6.2 6.2 N/A
Total FECC: 98477293 514
Total ES: 67 94
Total SES: 35 0
Total LOSS: 1 0
Total UAS: 308 274
Total LPRS: 0 0
Total LOFS: 0 0
Total LOLS: 0 0
DS Channel1 DS Channel0 US Channel1 US Channel0
Speed (kbps): 0 73998 0 14545
SRA Previous Speed: 0 73998 0 14343
Previous Speed: 0 73998 0 14343
Reed-Solomon EC: 7 40045 0 2
CRC Errors: 441 441 104 104
Header Errors: 0 0 0 0
Interleave (ms): 3.00 0.00 0.00 0.00
Actual INP: 4.01 55.00 0.00 0.00
Training Log : Stopped
Training Log Filename : flash:vdsllog.bin
Any suggestions would be very much appreciated.
