Re: Upstream light blinking with no internet issues.

Upstream light blinking with no internet issues.

My Firmware Version is V4.6.5.8_2.0.54, and I have a v3 before, with both I had the upstream light blinking all the time. There is no connectivity issues, so, internet works fine, even with the v4 looks like better than before, but I see the upstream light blinking all the time and it's pretty annoying.


Download and upload speed are fine, I don't have disconnections, the Xfinity techinitian came to my house around three weeks ago to verify the signal, and line, and he said that there was no problems. No splitters between the modem and ISP service box, and several reboot (Power OFF the modem for more that 2 minutes and them back ON), and factory resets didn't change the current blinking light.


Cable connection:

Startup Procedure
Acquire Downstream Channel507000000 HzLocked
Connectivity StateOkOperational
Boot StateOkOperational
IP Provisioning ModeHonor MDDhonorMdd(4)

Downstream Bonded Channels Partial Service
ChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectablesUncorrectable
1LockedQAM 25617483000000 Hz3.7 dBmV36.6 dB80
2LockedQAM 25618489000000 Hz3.7 dBmV36.6 dB30
3LockedQAM 25619495000000 Hz3.7 dBmV36.6 dB80
4LockedQAM 25620507000000 Hz3.5 dBmV36.3 dB220
5LockedQAM 25621513000000 Hz3.2 dBmV36.6 dB00
6LockedQAM 25622519000000 Hz3.2 dBmV36.3 dB00
7LockedQAM 25623525000000 Hz3.2 dBmV36.6 dB00
8LockedQAM 25624531000000 Hz3.2 dBmV36.3 dB00
9LockedQAM 25625537000000 Hz3.2 dBmV36.3 dB00
10LockedQAM 25626543000000 Hz3.2 dBmV36.6 dB00
11LockedQAM 25627549000000 Hz3.2 dBmV36.6 dB00
12LockedQAM 25628555000000 Hz3.0 dBmV36.6 dB00
13LockedQAM 25629561000000 Hz3.2 dBmV36.6 dB00
14LockedQAM 25630567000000 Hz3.0 dBmV36.3 dB20
15LockedQAM 25631573000000 Hz3.2 dBmV36.3 dB00
16LockedQAM 25632579000000 Hz3.2 dBmV36.3 dB00
17LockedQAM 25633585000000 Hz3.2 dBmV36.6 dB00
18LockedQAM 25634591000000 Hz3.2 dBmV36.3 dB00
19LockedQAM 25635597000000 Hz3.0 dBmV36.3 dB00
20LockedQAM 25636603000000 Hz3.7 dBmV36.3 dB00
21LockedQAM 25637609000000 Hz3.7 dBmV36.6 dB20
22LockedQAM 25638615000000 Hz3.5 dBmV36.6 dB50
23LockedQAM 25639621000000 Hz3.5 dBmV36.3 dB70
24LockedQAM 25640627000000 Hz3.2 dBmV36.6 dB40
25LockedQAM 25641633000000 Hz3.2 dBmV36.3 dB150
26LockedQAM 25642639000000 Hz3.0 dBmV36.3 dB120
27LockedQAM 25643645000000 Hz3.0 dBmV36.6 dB00
28LockedQAM 25644651000000 Hz2.7 dBmV36.3 dB00
29LockedQAM 25645657000000 Hz2.4 dBmV36.3 dB00
30LockedQAM 25646663000000 Hz2.5 dBmV36.6 dB00
31LockedQAM 25647669000000 Hz1.7 dBmV36.3 dB00
32Not LockedN/AN/A0 Hz0.0 dBmV0.0 dB00

Upstream Bonded Channels
ChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower
1LockedATDMA15120 Ksym/sec16400000 Hz40.8 dBmV
2LockedATDMA25120 Ksym/sec22800000 Hz41.5 dBmV
3LockedATDMA35120 Ksym/sec29200000 Hz42.3 dBmV
4LockedATDMA45120 Ksym/sec35600000 Hz43.3 dBmV
5LockedATDMA52560 Ksym/sec40400000 Hz43.8 dBmV
6Not LockedN/AUnknown0 Ksym/sec0 Hz0.0 dBmV
7Not LockedN/AUnknown0 Ksym/sec0 Hz0.0 dBmV
8Not LockedN/AUnknown0 Ksym/sec0 Hz0.0 dBmV

Downstream OFDM Channels
ChannelLock StatusModulation/Profile IDChannel IDFrequencyPowerSNR/MERActive Subcarrier
Number Range
1Locked348688000000 Hz1.2 dBmV35.3 dB1108~2987000
2Not Locked000 Hz0.0 dBmV0.0 dB0~4095000

Upstream OFDMA Channels
ChannelLock StatusModulation/Profile IDChannel IDFrequencyPower
1Not Locked000 Hz0.0 dBmV
2Not Locked000 Hz0.0 dBmV

Current System Time: Fri Nov 5 09:39:50 2021
System Up Time 2 days 00:34:38

Latest test result (9:20 Nov 5, 2021)
1023.52Mbps 24.11Mbps




Message 1 of 3

Re: Upstream light blinking with no internet issues.

Has a factory reset and setup from scratch been performed since last FW update? A complete pull of the power adapters for a period of time after the factory reset then walk thru the setup wizard and setup from scratch.

My Setup ISP SparkLight | Internet Cable 1000↓/50↑ CM2000 Modem | Wifi Router RAXE50 and R8500(v.158) Router Mode | Switches NG GS105/8 | 

Additional NG HW: C7800/CAX80/CM1100/CM1200/CM2000, Orbi: CBK40, CBK752, RBK50, RBK853, RBK752, RBK953, SXK30 | NightHawk: R7000, R7800, R7960P, R8000, R8500, RAXE500, RAX50, XR450, EX7500/EX7700, GS308v3

Message 2 of 3

Re: Upstream light blinking with no internet issues.

I didn’t try the factory reset after update the firmware. I’ll try it and put the result here.

Message 3 of 3
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