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We have a Telstra link which is connecting to a SRX at-1/0/0 interface. Link is having dropouts every day around 9 in the morning. Checked with Telstra already and they don't observe any issues with the link

Last flapped : 2017-08-08 8:58:41 EST

Can see that CRC errors are increasing also( Already changed the cable )

                             Interleave       Fast  Interleave       Fast
Bit rate (kbps)   :                14891          0         940          0
CRC               :                    0       1634           0          0
FEC               :                    0          0           0          0
HEC               :                58996          0        1232          0


Vendor Specific:                     0x9385                 0xa3f5

ADSL Statistics: ATU-R ATU-C
Attenuation (dB) : 31.5 19.5 Capacity used (%) : 0 0 Noise margin (dB) : 6.0 4.5 Output power (dBm) : 18.5 12.0

Discards are visible from monitoring

enter image description here

Any advice would be really appreciated, Thanks.

  • 1
    Has Telstra tech support tried monitoring the link at 9 am? – grawity Aug 8 '17 at 8:43
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Maybe some heavy machine nearby ramping up at that time? Have seen a similar effect with a tomography machine used for research. Do you know if that happens on weekend days, too?

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