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64 bytes from 96.120.68.201: icmp_seq=139 ttl=254 time=156 ms
64 bytes from 96.120.68.201: icmp_seq=140 ttl=254 time=66.6 ms
64 bytes from 96.120.68.201: icmp_seq=141 ttl=254 time=155 ms
64 bytes from 96.120.68.201: icmp_seq=142 ttl=254 time=135 ms
64 bytes from 96.120.68.201: icmp_seq=143 ttl=254 time=145 ms
64 bytes from 96.120.68.201: icmp_seq=144 ttl=254 time=214 ms
64 bytes from 96.120.68.201: icmp_seq=145 ttl=254 time=308 ms
64 bytes from 96.120.68.201: icmp_seq=146 ttl=254 time=188 ms
64 bytes from 96.120.68.201: icmp_seq=147 ttl=254 time=188 ms
64 bytes from 96.120.68.201: icmp_seq=148 ttl=254 time=240 ms
64 bytes from 96.120.68.201: icmp_seq=149 ttl=254 time=281 ms
64 bytes from 96.120.68.201: icmp_seq=150 ttl=254 time=293 ms
64 bytes from 96.120.68.201: icmp_seq=151 ttl=254 time=226 ms
64 bytes from 96.120.68.201: icmp_seq=152 ttl=254 time=89.1 ms
64 bytes from 96.120.68.201: icmp_seq=153 ttl=254 time=146 ms
64 bytes from 96.120.68.201: icmp_seq=154 ttl=254 time=138 ms
64 bytes from 96.120.68.201: icmp_seq=155 ttl=254 time=171 ms
64 bytes from 96.120.68.201: icmp_seq=156 ttl=254 time=232 ms
64 bytes from 96.120.68.201: icmp_seq=157 ttl=254 time=260 ms
64 bytes from 96.120.68.201: icmp_seq=158 ttl=254 time=182 ms
64 bytes from 96.120.68.201: icmp_seq=159 ttl=254 time=83.9 ms
64 bytes from 96.120.68.201: icmp_seq=160 ttl=254 time=194 ms
64 bytes from 96.120.68.201: icmp_seq=161 ttl=254 time=228 ms
64 bytes from 96.120.68.201: icmp_seq=162 ttl=254 time=219 ms
64 bytes from 96.120.68.201: icmp_seq=163 ttl=254 time=159 ms
64 bytes from 96.120.68.201: icmp_seq=164 ttl=254 time=216 ms
64 bytes from 96.120.68.201: icmp_seq=165 ttl=254 time=239 ms
What do the modem's signal stats look like ? Try getting them here http://192.168.100.1 or here http://10.0.0.1
Please post the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers.
What is the exact make and model number of the modem ?
Is this a WiFi connection ?
All tests done on a wired ethernet (not WiFi) connection.
Cable Modem is a Cisco XB3 DPC3941T.
Downstream
|
Channel Bonding Value | ||||||||||||||||||||||||
Index |
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
13
|
14
|
15
|
16
|
17
|
18
|
19
|
20
|
21
|
22
|
23
|
24
|
|
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Lock Status |
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
|
Frequency |
519 MHz
|
525 MHz
|
531 MHz
|
537 MHz
|
543 MHz
|
549 MHz
|
555 MHz
|
561 MHz
|
567 MHz
|
573 MHz
|
579 MHz
|
585 MHz
|
591 MHz
|
597 MHz
|
603 MHz
|
609 MHz
|
615 MHz
|
621 MHz
|
627 MHz
|
633 MHz
|
639 MHz
|
645 MHz
|
651 MHz
|
657 MHz
|
|
SNR |
40.366 dB
|
40.366 dB
|
40.366 dB
|
40.366 dB
|
38.983 dB
|
38.983 dB
|
38.983 dB
|
38.983 dB
|
38.983 dB
|
38.983 dB
|
38.983 dB
|
38.983 dB
|
40.366 dB
|
38.605 dB
|
38.983 dB
|
38.983 dB
|
38.983 dB
|
38.983 dB
|
38.983 dB
|
38.605 dB
|
38.605 dB
|
38.605 dB
|
38.983 dB
|
38.605 dB
|
|
Power Level |
6.600 dBmV
|
6.600 dBmV
|
6.600 dBmV
|
6.500 dBmV
|
6.300 dBmV
|
6.100 dBmV
|
6.200 dBmV
|
6.100 dBmV
|
6.000 dBmV
|
6.100 dBmV
|
6.200 dBmV
|
6.300 dBmV
|
6.400 dBmV
|
6.500 dBmV
|
6.400 dBmV
|
6.200 dBmV
|
5.900 dBmV
|
5.800 dBmV
|
5.700 dBmV
|
5.500 dBmV
|
5.600 dBmV
|
5.600 dBmV
|
5.500 dBmV
|
5.400 dBmV
|
|
Modulation |
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
Upstream
|
Channel Bonding Value | |||
Index |
1
|
2
|
3
|
|
---|---|---|---|---|
Lock Status |
Locked
|
Locked
|
Locked
|
|
Frequency |
30 MHz
|
23 MHz
|
36 MHz
|
|
Symbol Rate |
5120 KSym/sec
|
5120 KSym/sec
|
5120 KSym/sec
|
|
Power Level |
37.000 dBmV
|
37.000 dBmV
|
37.000 dBmV
|
|
Modulation |
64 QAM
|
64 QAM
|
64 QAM
|
|
Channel Type |
The stats as read at the modem level at that moment in time were o/k but there are three additional signal stats that can cause problems which can't be read by the modem. They can only be read from their end by them polling the CMTS (Cable Modem Termination System) at the local headend facility.
They are the "Upstream Rx Power" (Upstream Receive Power Level), the "Upstream SNR Ch." (Upstream Signal To Noise Ratio), and the "Upstream ICFR" (In Channel Frequency Response). These are as equally important in diagnosing connectivity issues as are the modem's stats.
You can call in and ask what these figures are. The Upstream Receive Power Level should fall within the range of -2dB to +2dB with 0dB being in the middle and perfect.
The Upstream SNR should be least 31dB, and the higher it is the better.
The ICFR should be no higher than 2 dB.
You could have an intermittent noise ingress issue in only the upstream channel(s) / return path only somewhere.
They will be able to see whether or not everything is in the green zone and also see a history plot for the modem.
Also be advised that that jitter could be being caused by an intermittent capacity / traffic congestion problem on your local cable segment / node. Good luck !