Every 30 minutes there is a massive spike in the latency - as shown in: Latency Spike
When this occurs there is an increase in the downstream errors: CRC increases by around 15-20, FEC by 1 or 2 and HEC by about 5. Occasionally the spike is a lot lower and just the upstream FEC increments by 2 or 3.
Reboots and resets do not change anything except the timing of the spikes - which are currently around 25 minutes apart, but could be up to 40 minutes and they seem to stay at the same spacing for quite a while and then suddenly change, so are "consistent". A reboot can alter them which points towards modem or DSLAM rather than an external influence.
So, ignoring the latency spikes themselves, is the general line performance acceptable with error rates of: CRCdn 30/hr, FECdn 2/hr, HECdn 10/hr and FECup 4/hr ?
M H C
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