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Intermittent disconnects since recent work in area for Next Gen network - High upstream now - Is this the culprit? Arrange tech visit?
Hopefully I can get some guidance on next steps from some of the helpful people here or Xfinity Support forum reps themselves.
Background (no issues past several years):
I have had Gigabit Extra for a few years at least and speeds and reliability have been great throughout those years (and before when on lower speed plans).
Arris S34 cable modem.
Using speedtest, I get 15500 Mbps down / 41.88 Mbps up. All fine there.
I did not monitor my Upstream power levels for a long time since things were very reliable (work remotely and work machine connectivity has been rock solid.
They were usually in the mid 40s dB range, at most in the upper 40s.
Current Situation (recent upgrade nearby causing issues):
About 4 weeks ago, Xfinity upgraded to Next Gen at the main street (so part 1 of 2 only).
This caused some outages back in April and techs had to fix the nearby nodes (nodes outside neighbor's homes on my street e.g.; not my node to my knowledge).
This week there were official outages on Monday and Tue (per Xfinity app, so not my home but in the area and I got temporarily / intermittently impacted those days - mainly within a 1 hour window ands then fine again).
Intermittent disconnects - Issue on my end or?
Today I got disconnected ONCE (so far) for 4 or 5 minutes or so (log entries below), but there was NO outage posted this time, pointing to something in the line signal from the node at the street to my home cable entry point. perhaps?
Upstream Power High?
Is 51 dB still considered too high? If so, is the upstream power explaining the the 4 to 5 minute disconnect 3 hours ago? (connection was fine all day before and since - been online for work and it immediately alerts if the connection is disrupted).
I noticed my Upstream power levels appear to be high now which they have not been in YEARS since they adjusted splitters etc. maybe 8 years ago or so.
Again this all started right after the network upgrades at main street feeding the line into our set of streets - about a month ago.
Upstream Bonded Channels | ||||||
---|---|---|---|---|---|---|
Channel ID | Lock Status | US Channel Type | Frequency | Width | Power | |
1 | Locked | SC-QAM | 16400000 Hz | 6400000 | 51.0 dBmV | |
4 | Locked | SC-QAM | 35600000 Hz | 6400000 | 51.5 dBmV | |
3 | Locked | SC-QAM | 29200000 Hz | 6400000 | 51.5 dBmV | |
2 | Locked | SC-QAM | 22800000 Hz | 6400000 | 51.5 dBmV | |
41 | Locked | OFDMA | 36200000 Hz | 44400000 | 44.5 dBmV |
Issues (per event log)?
I checked my S34 cable modem event log and it shows some interesting entries at that time (time is off by 1 hour versus Eastern time). Hopefully someone can explain them since I have not seen them in the past.
I highlighted some entries in red. Are these of concern?
|
Notice |
CM-STATUS message sent. Event Type Code: 16; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC;CM-QOS=1.1;CM-VER=3.1; |
|
Warning |
RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=MAC ADDRESS REMOVED;CMTS-MAC=<<MAC ADDRESS REMOVED>;CM-QOS=1.1;CM-VER=3.1; |
|
Warning |
REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=MAC ADDRESS REMOVED;CMTS-MAC=<<MAC ADDRESS REMOVED>;CM-QOS=1.1;CM-VER=3.1; |
|
Warning |
MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1 |
|
Notice |
CMSTATUS:US_Diplexer_Mode_Change: [TLV-21.1], [5-85MHz]. |
|
Notice |
CMSTATUS:DS_Diplexer_Mode_Change_Ignored: [TLV-21.3], [1002MHz]. |
|
Notice |
CMSTATUS:DS_Diplexer_Mode_Change_Ignored: [TLV-21.2], [258MHz]. |
|
Notice |
CMSTATUS:US_Diplexer_Mode_Change_Ignored: [TLV-9], [85MHz]. |
|
Critical |
Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=MAC ADDRESS REMOVED;CMTS-MAC=<<MAC ADDRESS REMOVED>;CM-QOS=1.1;CM-VER=3.1; |
|
Warning |
Lost MDD Timeout;CM-MAC=MAC ADDRESS REMOVED;CMTS-MAC=<<MAC ADDRESS REMOVED>;CM-QOS=1.1;CM-VER=3.1; |
|
Notice |
CM-STATUS message sent. Event Type Code: 21; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=MAC ADDRESS REMOVED;CMTS-MAC=<<MAC ADDRESS REMOVED>;CM-QOS=1.1;CM-VER=3.1; |
|
Critical |
SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=MAC ADDRESS REMOVED;CMTS-MAC=<<MAC ADDRESS REMOVED>;CM-QOS=1.1;CM-VER=3.1; |
Any ideas?
Looking for next steps suggestions. Should I arrange for a tech visit?
As noted, never had issues till recent work in the area for Next Gen and in past Upstream power levels were below 50. Used to be rock solid till the recent work a month ago.
PS: Unfortunately our cable lines from node (green box) at the street to our house are underground if that needs to be replaced. :(
Then again the line has always been fine and these intermittent disconnect issues (NOT frequent, but I work from home) only started when the Xfinity Next Gen work started nearby. Our street has not been upgraded yet
though.
Thanks for any help!
(edited my post to remove MAC addresses; did not realize I had not masked / removed them till after posting)
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