Resurrecting this thread I've just seen today some modem stats from a guy running on 5 downstreams, the additional one added 8MHz below the previous lowest one at 299MHz / 298.75MHz - the VMNG300 can manage 4 downstreams so an area running at 50% utilisation downstream on 5 downstreams will cause VMNG300s to run with visible contention while the Superhub punters will be fine up to 60%. Once a 6th downstream is added the Superhub is fine up to 66%, 8 downstreams 75%. 100Mbps difference.
5+ downstreams is the intended 100Mbps build, 4 downstreams being an interim solution while hardware was being upgraded.
Downstream Channels
Lock Status Modulation Channel ID Max Raw Bit Rate Frequency Power SNR Docsis/EuroDocsis locked
Locked QAM256 140 55616000 Kbits/sec 322750000 Hz -3.9 dBmV 38.8 dBHybrid
Locked QAM256 136 55616000 Kbits/sec 290750000 Hz -3.5 dBmV 38.4 dBHybrid
Locked QAM256 137 55616000 Kbits/sec 298750000 Hz -3.4 dBmV 38.6 dBHybrid
Locked QAM256 138 55616000 Kbits/sec 306750000 Hz -3.5 dBmV 38.5 dBHybrid
Locked QAM256 139 55616000 Kbits/sec 314750000 Hz -3.6 dBmV 38.3 dBHybrid
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 0.0 dB Unknown
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 0.0 dB Unknown
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 0.0 dB Unknown
---------- Post added at 16:27 ---------- Previous post was at 16:15 ----------
I wonder if anyone remembers the VMNG becoming unresponsive under load way back when
If you were using the connection too much it would forget to respond to keepalives from the CMTS causing T3s, T4s and disconnects, it couldn't handle doing its normal work along with doing TurboDOX so they ended up having to disable TurboDOX to stabilise it.
Amusingly the Superhub I have here, in modem mode, is more reliable than my VMNG300 was during the same part of its life. Once modem mode is widely available things should be nicely sorted.
Just a little reminder. The Superhub is excrement but the VMNG300 was excrement once as well.