Hi,

I have a new C3700 Netgear Cable Modem Router with TWC Extreme Internet here in Austin, TX (78717) and everything worked great for about 2 months. However, now I am not able to access Internet as the connection is really slow since the past 2 weeks. I have been on numerous calls with TWC support but they have not been able to help. The TWC technician came to our apartment and checked the cable and everything looks great. He plugged the TWC modem/router and it worked fine. Somehow it just seems to be an issue when I am using my own Netgear C3700 Modem/Router. I'll appreciate if somone can provide a resolution. Thank you.

Here are the cable connection settings and Event Logs

Hardware Version	C279T00-01

Firmware Version	V1.01.11

Frequency start Value

This field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect.

Starting Frequency

Startup Procedure

Procedure	Status	Comment
Acquire Downstream Channel	591000000 Hz	Locked
Connectivity State	OK	Operational
Boot State
Configuration File
Security	Enabled	BPI+

Downstream Bonded Channels

Channel	Lock Status	Modulation	Channel ID	Frequency	Power	SNR	Correctables	Uncorrectables
1		QAM256		591000000 Hz	10.2 dBmV	41.9 dB	0	0
2		QAM256		573000000 Hz	10 dBmV	41.3 dB	0	0
3		QAM256		579000000 Hz	10.2 dBmV	41.3 dB	0	0
4		QAM256		585000000 Hz	10.1 dBmV	41.4 dB	0	0
5		QAM256		567000000 Hz	10.4 dBmV	41.4 dB	0	0
6		QAM256		507000000 Hz	11.6 dBmV	41.9 dB	0	0
7		QAM256		513000000 Hz	11.3 dBmV	42 dB	0	0
8		QAM256		519000000 Hz	11.1 dBmV	41.5 dB	0	0

Upstream Bonded Channels

Channel	Lock Status	US Channel Type	Channel ID	Symbol Rate	Frequency	Power
1		ATDMA		5120 Ksym/sec	24200000 Hz	36 dBmV
2		TDMA		2560 Ksym/sec	19400000 Hz	36 dBmV
3		ATDMA		5120 Ksym/sec	30600000 Hz	36 dBmV
4		ATDMA		2560 Ksym/sec	37000000 Hz	36 dBmV

Current System Time: Mon Nov 30 21:09:37 2015

System Up Time 01:27:38

Port	Status	TxPkts	RxPkts	Collisions	Tx B/s	Rx B/s	Up Time
WAN	Link Up	10852	71410	0	372	2749	01:26:49
LAN1	Link Down	0	0	0	0	0	--
LAN2	Link Down	--
WLAN/2.4G	300M	7379	4715	0	4505	699	00:15:15
WLAN/5G	300M	14924	2181	0	240	82	01:27:38

Event Log

Time	Priority	Description
1970-1-1, 00:00:31.0	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=50:6a:03:7e:8d:68;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
1970-1-1, 00:00:34.0	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=50:6a:03:7e:8d:68;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2015-11-30, 20:45:00.0	Critical (3)	Resetting the cable modem due to docsDevResetNow
1970-1-1, 00:00:32.0	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=50:6a:03:7e:8d:68;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
1970-1-1, 00:00:34.0	Notice (6)	WiFi Interface [wl0] set to Channel 11 (Side-Band Channel:N/A) - Reason:INIT
1970-1-1, 00:00:35.0	Notice (6)	WiFi Interface [wl1] set to Channel 153 (Side-Band Channel:149) - Reason:INIT
1970-1-1, 00:00:39.0	Notice (6)	Honoring MDD; IP provisioning mode = IPv4
1970-1-1, 00:00:41.0	Warning (5)	DHCP WARNING - Non-critical field invalid in response ;CM-MAC=50:6a:03:7e:8d:68;CMTS-MAC=00:17:10:86:ab:9d;CM-QOS=1.0;CM-VER=3.0;
2015-11-30, 20:46:00.0	Error (4)	Missing BP Configuration Setting TLV Type: 17.8;CM-MAC=50:6a:03:7e:8d:68;CMTS-MAC=00:17:10:86:ab:9d;CM-QOS=1.1;CM-VER=3.0;
2015-11-30, 20:46:00.0	Error (4)	Missing BP Configuration Setting TLV Type: 17.9;CM-MAC=50:6a:03:7e:8d:68;CMTS-MAC=00:17:10:86:ab:9d;CM-QOS=1.1;CM-VER=3.0;

Forum Discussion

Very Slow (almost zero) Internet Connectivity - Netgear C3700 TWC - Austin, TX