I've been experiencing regular packet loss for the past week. Typically seeing ~10% loss, but seen up to 60%.
This all began after my neighborhood had an 18hour internet outage. Prior to that outage, I had no issues.
My troubleshooting so far has been:
My test is to traceroute google.com. With that I find the first connection is to a 126.96.36.199. If I ping that IP, I see
--- 188.8.131.52 ping statistics ---
131 packets transmitted, 116 packets received, 11.5% packet loss
round-trip min/avg/max/stddev = 9.640/14.861/45.132/5.694 ms
Does anyone have any suggestions on how to further troubleshoot this?
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 with a WiFi connection ?
|Downstream||Bonding Channel Value|
|Frequency||627000000 Hz||633000000 Hz||639000000 Hz||645000000 Hz|
|Signal to Noise Ratio||35 dB||35 dB||36 dB||36 dB|
|-8 dBmV||-8 dBmV||-8 dBmV||-7 dBmV|
|Upstream||Bonding Channel Value|
|Frequency||35600000 Hz||16400000 Hz||22800000 Hz||29200000 Hz|
|Ranging Service ID||13949||13949||13949||13949|
|Symbol Rate||5.120 Msym/sec||5.120 Msym/sec||5.120 Msym/sec||5.120 Msym/sec|
|Power Level||47 dBmV||45 dBmV||46 dBmV||48 dBmV|
|Upstream Modulation|| QPSK
|Signal Status (Codewords)||Bonding Channel Value|
|Total Unerrored Codewords||484497309||481561350||481560755||481560923|
|Total Correctable Codewords||192||139||125||120|
|Total Uncorrectable Codewords||729||727||1457||1436|
Model Name: SB6121
Vendor Name: ARRIS Group, Inc.
You didn't answer the questions.. This may not be the direct cause of the problem but it should be addressed regardless.
The downstream power is on the low / weak side and it may be intermittently fluctuating even lower to out of spec levels. That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, latency problems, and the un-bonding of channels.
In a self troubleshooting effort to try to obtain better connectivity / more wiggle room, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1002 MHz, bi-directional, and no gold colored garbage types like GE, RadioShack, RCA, Philips, Leviton, Magnavox, and Rocketfish from big box stores like Home Depot, Lowes, Target, Wal-Mart etc. Splitters should be swapped with known to be good / new ones to test
If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two way splitter connected directly off of the drop from the street/pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed, and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.
Good luck !