Hello, THis is in regards to Netgear C3000 wireless modem I have had slow connectivity for couple days through comcast. I am wondering if it has to do with channel bonding. I checked wires, did a reboot, did a factory reset. When I looked at settings I noticed only one channel was locked is there a fix to this or what would my next step be before I go towards troubleshooting cable and possibly having to have a comcast tech come out. Thank you for your help. below are my current data ChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectablesUncorrectables1LockedQAM2569705000000 Hz-22.9 dBmV26.8 dB97794325241812Not LockedUnknown7693000000 Hz0.0 dBmV0.0 dB003Not LockedUnknown10711000000 Hz0.0 dBmV0.0 dB004Not LockedUnknown12723000000 Hz0.0 dBmV0.0 dB005Not LockedUnknown13729000000 Hz0.0 dBmV0.0 dB006Not LockedUnknown14735000000 Hz0.0 dBmV0.0 dB007Not LockedUnknown15741000000 Hz0.0 dBmV0.0 dB008Not LockedUnknown16747000000 Hz0.0 dBmV0.0 dB00 Upstream Bonded ChannelsChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower1LockedATDMA575120 Ksym/sec36400000 Hz53.5 dBmV2LockedATDMA585120 Ksym/sec29500000 Hz52 dBmV3LockedATDMA595120 Ksym/sec22600000 Hz50.5 dBmV4LockedATDMA605120 Ksym/sec15700000 Hz51.8 dBmV

Aspirant

May 05, 2016

Solved

channel bonding c3000

Hello,

THis is in regards to Netgear C3000 wireless modem

I have had slow connectivity for couple days through comcast. I am wondering if it has to do with channel bonding. I checked wires, did a reboot, did a factory reset. When I looked at settings I noticed only one channel was locked is there a fix to this or what would my next step be before I go towards troubleshooting cable and possibly having to have a comcast tech come out.

Thank you for your help.

below are my current data

Channel	Lock Status	Modulation	Channel ID	Frequency	Power	SNR	Correctables	Uncorrectables
1	Locked	QAM256	9	705000000 Hz	-22.9 dBmV	26.8 dB	9779432	524181
2	Not Locked	Unknown	7	693000000 Hz	0.0 dBmV	0.0 dB	0	0
3	Not Locked	Unknown	10	711000000 Hz	0.0 dBmV	0.0 dB	0	0
4	Not Locked	Unknown	12	723000000 Hz	0.0 dBmV	0.0 dB	0	0
5	Not Locked	Unknown	13	729000000 Hz	0.0 dBmV	0.0 dB	0	0
6	Not Locked	Unknown	14	735000000 Hz	0.0 dBmV	0.0 dB	0	0
7	Not Locked	Unknown	15	741000000 Hz	0.0 dBmV	0.0 dB	0	0
8	Not Locked	Unknown	16	747000000 Hz	0.0 dBmV	0.0 dB	0	0

Upstream Bonded Channels

Channel	Lock Status	US Channel Type	Channel ID	Symbol Rate	Frequency	Power
1	Locked	ATDMA	57	5120 Ksym/sec	36400000 Hz	53.5 dBmV
2	Locked	ATDMA	58	5120 Ksym/sec	29500000 Hz	52 dBmV
3	Locked	ATDMA	59	5120 Ksym/sec	22600000 Hz	50.5 dBmV
4	Locked	ATDMA	60	5120 Ksym/sec	15700000 Hz	51.8 dBmV

Troubleshooting

Retired_Member
May 05, 2016
-22.9 is a problem, I would suspect water in a splitter or connector on the outside or a bad house amp. You need to call Comcast for a service call.

4 Replies

Retired_Member

May 05, 2016

-22.9 is a problem, I would suspect water in a splitter or connector on the outside or a bad house amp. You need to call Comcast for a service call.

rockjamd

Aspirant

May 05, 2016

THanks for your help today I am getting better speeds do you think it is still a splitter or hardware problem? Last night I was only getting 5mbps and has been slow for couple days if it gets slow again I will call comcast. I am paying for 75 mbps

NetGear C3000

Date Download Upload IP Address

5/5/2016 10:53 AM	66.99 Mbps	12.23 Mbps
5/5/2016 10:52 AM	66.44 Mbps	11.99 Mbps
5/5/2016 10:51 AM	31.38 Mbps	12.14 Mbps
5/5/2016 10:50 AM	14.68 Mbps	12.04 Mbps
5/5/2016 10:44 AM	66.56 Mbps	12.14 Mbps

getting more channels this morning: NetGear C3000

Channel	Lock Status	Modulation	Channel ID	Frequency	Power	SNR	Correctables	Uncorrectables
1	Locked	QAM256	9	705000000 Hz	-21.2 dBmV	28.5 dB	226859190	29606850
2	Locked	QAM256	2	663000000 Hz	-13.3 dBmV	31.4 dB	935504	176901
3	Not Locked	Unknown	3	669000000 Hz	0.0 dBmV	0.0 dB	0	0
4	Not Locked	Unknown	4	675000000 Hz	0.0 dBmV	0.0 dB	0	0
5	Locked	unknown	5	681000000 Hz	-13.2 dBmV	23.8 dB	2420	1039
6	Not Locked	Unknown	8	699000000 Hz	0.0 dBmV	0.0 dB	0	0
7	Not Locked	Unknown	10	711000000 Hz	0.0 dBmV	0.0 dB	0	0
8	Not Locked	Unknown	11	717000000 Hz	0.0 dBmV	0.0 dB	0	0

Upstream Bonded Channels

Channel	Lock Status	US Channel Type	Channel ID	Symbol Rate	Frequency	Power
1	Locked	ATDMA	57	5120 Ksym/sec	36400000 Hz	54 dBmV
2	Locked	ATDMA	58	5120 Ksym/sec	29500000 Hz	51.7 dBmV
3	Locked	ATDMA	59	5120 Ksym/sec	22600000 Hz	50.7 dBmV
4	Locked	ATDMA	60	5120 Ksym/sec	15700000 Hz	52.5 dBmV

Retired_Member
May 05, 2016

Call before it goes out completely and they tell you the earliest app is 3 days out. The test results don't mean squat they are a snapshot in time nothing else.

The signal levels show a problem deal with the problem.

rockjamd
Aspirant
May 07, 2016
comcst contractor came today. I found out they were here working on someone else last week and whatever they did to fix other apartment messed everyone else up. He said someone is comeing withing 48 hours to fix the main line coming in. Anyways all I can do is show this pic this is how the last tech left box on my apartment building one week ago. I have no idea what this is but he said it was messed up. This pic is how last tech left box....

So you were right to call comcast fast.

Thanks For help

Forum Discussion

channel bonding c3000