Re: Upstream channel bonding: Any plans to bond more than 2?
My area is fed from New Malden, and was on 12 down streams for a fair time. a few months ago it went to 16 downstream channels. Even though there was no apparent congestion this jumped to 24 down with 2 up about 4 weeks ago. It was done at the same time the CMTS was swapped for a Cisco 10k
No idea if the upstreams are 16 or 64QAM as the Hitron will not show that information for upstreams. Nor will it show operational config details. |
Re: Upstream channel bonding: Any plans to bond more than 2?
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Re: Upstream channel bonding: Any plans to bond more than 2?
yes it would be good to have it reveal a bit more. It certainly doesn't provide as much information as the residential devices about the service:-
DOCSIS WAN DOCSIS Overview Network Access Permitted IP Address Subnet Mask 255.255.248.0 DHCP Lease Time 04 Days,22 Hours,07 Minutes,20 Seconds Downstream Overview Force Downstream Frequency (MHz) Port Frequency (Hz) Modulation Power (dBmV) SNR (dB) Channel 1 139000000 256QAM 4.200 37.356 1 2 147000000 256QAM 4.000 37.356 2 3 155000000 256QAM 3.900 37.356 3 4 163000000 256QAM 3.800 37.356 4 5 171000000 256QAM 3.700 37.356 5 6 179000000 256QAM 3.700 36.387 6 7 187000000 256QAM 3.900 34.484 7 8 195000000 256QAM 3.700 35.780 8 9 203000000 256QAM 3.700 37.356 9 10 211000000 256QAM 3.800 37.636 10 11 219000000 256QAM 3.500 37.356 11 12 227000000 256QAM 3.300 36.610 12 13 235000000 256QAM 3.000 37.356 13 14 243000000 256QAM 2.900 37.356 14 15 251000000 256QAM 2.800 36.610 15 16 259000000 256QAM 2.700 37.356 16 17 267000000 256QAM 2.600 36.610 17 18 275000000 256QAM 2.600 36.610 18 19 283000000 256QAM 2.700 37.356 19 20 291000000 256QAM 2.700 36.610 20 21 299000000 256QAM 2.700 36.610 21 22 307000000 256QAM 2.700 36.610 22 23 315000000 256QAM 2.800 36.610 23 24 323000000 256QAM 2.600 36.387 24 Upstream Overview Port Frequency (Hz) BandWidth Modulation Power (dBmV) Channel 2 24400000 6400000 ATDMA 40.750 3 3 31000026 6400000 ATDMA 41.250 2 |
Re: Upstream channel bonding: Any plans to bond more than 2?
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Re: Upstream channel bonding: Any plans to bond more than 2?
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Re: Upstream channel bonding: Any plans to bond more than 2?
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Re: Upstream channel bonding: Any plans to bond more than 2?
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Re: Upstream channel bonding: Any plans to bond more than 2?
One thing that I've noticed is that my connection is worse, if going by the tbb graph, when it is bonding the 2 upstream on 39.4 and 46.2MHz. The average latency on the graph is much more consistent when it's on 25.8 and 32.6MHz.
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Re: Upstream channel bonding: Any plans to bond more than 2?
Any further news on this? Still on 2x 16QAM here.
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Re: Upstream channel bonding: Any plans to bond more than 2?
^ My area was moved to a new CMTS late last month and we went from two to four Upstreams (24 downstreams), All of the Upstreams are QAM16 though, I heard that my area was upgraded to QAM64 a while ago, but seemingly not the node I am on.
https://www.cableforum.co.uk/images/...2017/11/16.png |
Re: Upstream channel bonding: Any plans to bond more than 2?
Just checked mine again, still on 2 x 64 qam (Up) and 24 x 256 qam (Down).
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Re: Upstream channel bonding: Any plans to bond more than 2?
Still 2x 64qam here too, however there is planned maintainence on the 22nd so I'll be keeping an eye on it.
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Re: Upstream channel bonding: Any plans to bond more than 2?
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I'll admit to mostly being ignorant about how exactly qam works, but I would have expected 2 x 64 to be better than 4 x 16. |
Re: Upstream channel bonding: Any plans to bond more than 2?
QAM64 = 6 bits/symbol
QAM16 = 4 bits/symbol At is simplest: 2 x QAM64 = 12 bits per thingy 4 x QAM16 = 16 bits per thingy So 4 x 16QAM is better than 2 x 64QAM. |
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