CM500 and sporadic issues on Comcast\Xfinity

Question

Things seems sluggish of late.&nbsp; Need some help before contactng Comcast again as they as me to check with Netgear first. &nbsp; Info from this morning:&nbsp;Upstream Bonded ChannelsChannel&nbsp;Lock Status&nbsp;US Channel Type&nbsp;Channel ID&nbsp;Symbol Rate&nbsp;Frequency&nbsp;Power&nbsp;1LockedATDMA135120 Ksym/sec34800000 Hz37.3 dBmV2LockedATDMA145120 Ksym/sec27900000 Hz37.3 dBmV3LockedATDMA155120 Ksym/sec21000000 Hz36 dBmV4LockedATDMA162560 Ksym/sec14100000 Hz35 dBmV&nbsp;Downstream Bonded ChannelsChannel&nbsp;Lock Status&nbsp;Modulation&nbsp;Channel ID&nbsp;Frequency&nbsp;Power&nbsp;SNR&nbsp;Correctables&nbsp;Uncorrectables&nbsp;1LockedQAM2561609000000 Hz1.8 dBmV39.5 dB22792LockedQAM2562615000000 Hz1.7 dBmV39.4 dB33313LockedQAM2563621000000 Hz1.8 dBmV39.5 dB42704LockedQAM2564627000000 Hz1.9 dBmV39.4 dB35655LockedQAM2565633000000 Hz1.9 dBmV39.4 dB59356LockedQAM2566639000000 Hz1.8 dBmV39.2 dB40247LockedQAM2567645000000 Hz2.2 dBmV39.4 dB18598LockedQAM2568651000000 Hz1.9 dBmV39.2 dB50389LockedQAM2569657000000 Hz1.8 dBmV39.2 dB562710LockedQAM25611669000000 Hz1.8 dBmV39.1 dB236111LockedQAM25612675000000 Hz1.6 dBmV38.4 dB369412LockedQAM25613681000000 Hz1.7 dBmV39 dB274113LockedQAM25614687000000 Hz1.6 dBmV38.9 dB4112614LockedQAM25617705000000 Hz1.8 dBmV39 dB2252615LockedQAM25621729000000 Hz1.1 dBmV38.7 dB47916LockedQAM25624747000000 Hz0.6 dBmV38.4 dB2419&nbsp;Startup Procedure&nbsp;Procedure&nbsp;Status&nbsp;Comment&nbsp;Acquire Downstream Channel609000000 HzLockedConnectivity StateOKOperationalBoot StateOKOperationalConfiguration File&nbsp;&nbsp;SecurityEnabledBPI+IP Provisioning ModeHonor MDDhonorMdd(4)&nbsp;Alot of these in log:Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=X;CMTS-MAC=X;CM-QOS=1.1;CM-VER=3.0;SYNC Timing Synchronization failure - Failed to acquire FEC framing;SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;SYNC Timing Synchronization failure - Failed to acquire FEC framing;Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;Dynamic Range Window violation&nbsp;A lot more of these:No Ranging Response received - T3 time-out&nbsp;Have a few entries with a date time of:1970-1-1, 00:00:XX&nbsp;

DarrenM · Answer

Hello KatPhish

&nbsp;

If you are getting alot of T3 timeouts that is a sign of line issues that the ISP needs to come check out. Here is a link describing the timeouts.

&nbsp;

http://volpefirm.com/docsis_timout_descriptions/

&nbsp;

DarrenM

katPHish · Answer

Logs has had no new entries since the 21st...&nbsp; THings seem better now.&nbsp; Go figure.&nbsp;&nbsp;

Forum Discussion

CM500 and sporadic issues on Comcast\Xfinity

2 Replies

Upstream Bonded Channels
Channel	Lock Status	US Channel Type	Channel ID	Symbol Rate	Frequency	Power
1	Locked	ATDMA	13	5120 Ksym/sec	34800000 Hz	37.3 dBmV
2	Locked	ATDMA	14	5120 Ksym/sec	27900000 Hz	37.3 dBmV
3	Locked	ATDMA	15	5120 Ksym/sec	21000000 Hz	36 dBmV
4	Locked	ATDMA	16	2560 Ksym/sec	14100000 Hz	35 dBmV

Downstream Bonded Channels
Channel	Lock Status	Modulation	Channel ID	Frequency	Power	SNR	Correctables	Uncorrectables
1	Locked	QAM256	1	609000000 Hz	1.8 dBmV	39.5 dB	22	79
2	Locked	QAM256	2	615000000 Hz	1.7 dBmV	39.4 dB	33	31
3	Locked	QAM256	3	621000000 Hz	1.8 dBmV	39.5 dB	42	70
4	Locked	QAM256	4	627000000 Hz	1.9 dBmV	39.4 dB	35	65
5	Locked	QAM256	5	633000000 Hz	1.9 dBmV	39.4 dB	59	35
6	Locked	QAM256	6	639000000 Hz	1.8 dBmV	39.2 dB	40	24
7	Locked	QAM256	7	645000000 Hz	2.2 dBmV	39.4 dB	18	59
8	Locked	QAM256	8	651000000 Hz	1.9 dBmV	39.2 dB	50	38
9	Locked	QAM256	9	657000000 Hz	1.8 dBmV	39.2 dB	56	27
10	Locked	QAM256	11	669000000 Hz	1.8 dBmV	39.1 dB	23	61
11	Locked	QAM256	12	675000000 Hz	1.6 dBmV	38.4 dB	36	94
12	Locked	QAM256	13	681000000 Hz	1.7 dBmV	39 dB	27	41
13	Locked	QAM256	14	687000000 Hz	1.6 dBmV	38.9 dB	41	126
14	Locked	QAM256	17	705000000 Hz	1.8 dBmV	39 dB	225	26
15	Locked	QAM256	21	729000000 Hz	1.1 dBmV	38.7 dB	47	9
16	Locked	QAM256	24	747000000 Hz	0.6 dBmV	38.4 dB	24	19

Startup Procedure
Procedure	Status	Comment
Acquire Downstream Channel	609000000 Hz	Locked
Connectivity State	OK	Operational
Boot State	OK	Operational
Configuration File
Security	Enabled	BPI+
IP Provisioning Mode	Honor MDD	honorMdd(4)