Hi,
I've completed the form for requesting assistance with Internet problems.
Thank You
1. A description of the problem. (i.e. lost connection, slow speeds, high pings, etc.)
This is an ongoing problems. Downstream power levels currently at 10. Often they run in the 5-8 range, but when they go a little higher the connection either times out or goes down solid. This is with a commscope SV-4G spliiter with 7 db attenuation, installed several months ago by mediacom technician. Only internet, nothing else connected to remaining 3 ports on splitter. Power levels tend to jump around alot. About 2 months ago a phone support person verified for me that other houses in the area had similar variations in signal levels. They sent a tech out and he adjusted the amplifier on the pole in front of my house. My signal levels didn't go down when he adjusted it, but he claimed that since my house was so close to the amplifier he couldn't lower downstream signal levels any further without causing problems with upstream levels. SEE SIGNAL LEVELS and LOG of T3/T4 TIMEOUTS below.
Several times they have scheduled service calls, sometimes the wait is 2-3 weeks after I request them and a tech comes out and can't find anything wrong when he tests my connection. Not a surprise since the problem appears to be in the infrastructure and not in my connection.
While I would greatly appreciate if they would fix the problem with the infrastructure, I would appreciate some guidance on how to choose the best attenuation devices and what attenuation levels to use to get my downstream signal from 5 down to 0 and also from 7 down to 0, so at least I don't have to be without service when the problem occurs, also how to make sure that I won't create problems with the upstream signal if I add more attenuation.
2. Give a description of any home networking setup you may have. (i.e. router make/ model, hubs, adapters, etc.)
currently use a Linux box for router connected to cable modem and to an HP procurve HUB. Connection can be tested directly from linux box. No issues with router.
3. Modem make, model and firmware version.
I have 2 so I can swap to eliminate modem problems as cause of failure, generally the cisco performs much worse and sees high packet loss when the powerlevels get too high. The motorola seems to handle the high power levels better.
current modem: Motorola SB6141
firmware downloaded by mediacom: SB_KOMODO-1.0.6.16-SCM00-NOSH
Hardware Version: 7.0
backup modem: Cisco DPC 3010
4. Signal levels found at »192.168.100.1 if applicable.
NOTE in first snapshot below with signal level 10, only 1 channel is active, no bonding
Current failure: http://hosting.rjl.com/mediacom/mediacom-powerlevels-11-16-16-02.txt
snapshot with power levels at lower end of variation range:
http://hosting.rjl.com/mediacom/mediacom-powerlevels-11-07-16.txt
5. A speed test from DSLR.
Local Time Down Up Ping Bloat Streams Comment
21:50:15 56.5 5.99 D
6. A Line Quality test from here. Please copy & post the URL in the red box! This could take a while, so you might run this first.
Location IP Min +PDV
NSW, AUS 54.153.204.70 222 +4.3ms
SC, Brazil 200.237.196.90 233 +4ms
SP, Brazil 52.67.48.85 209 +3.1ms
Manitoba, Canada 192.219.0.94 88 +2.9ms
ON, Canada 206.248.155.54 95 +5.1ms
QC, Canada 173.243.192.222 107 +5.2ms
AMS, Netherlands 5.153.60.125 171 +4.3ms
Germany, EU 95.172.92.166 191 +2.7ms
Ireland, EU 54.154.207.39 161 +6.2ms
London, UK 88.80.191.58 171 +3.9ms
NL, EU 104.155.37.25 173 +4.2ms
Zurich, EU 83.150.0.50 185 +3.1ms
Mumbai, India 35.154.3.141 304 +3.1ms
Tokyo, Japan 54.65.9.39 158 +7.5ms
Davao, Philippines 202.137.115.7 251 +9.2ms
San Juan, PR 209.91.216.173 114 +4.6ms
Singapore 54.179.167.120 210 +4ms
Taiwan 104.155.201.41 245 +3ms
CA, USA 64.140.161.58 38 +4.1ms
CO, USA 72.5.102.138 63 +3.2ms
DC, USA 65.79.226.210 81 +3.9ms
DE, USA 162.151.17.198 96 +4.1ms
FL, USA 99.24.18.30 98 +3.9ms
GA, USA 104.153.104.126 69 +3.1ms
IA, USA 104.154.69.141 88 +4.2ms
IL, USA 162.248.92.123 95 +5.1ms
IN, USA 99.24.18.74 90 +4ms
KY, USA 199.193.180.23 87 +4.3ms
LA, USA 162.248.93.162 39 +3.5ms
MI, USA 68.85.49.234 103 +3.4ms
MN, USA 64.90.65.50 85 +3.6ms
MO, USA 142.54.161.173 71 +2.8ms
16/11/2016 9:58:43PM calculating grade
16/11/2016 9:59:06PM grade A
16/11/2016 9:59:36PM grade A+
16/11/2016 10:00:06PM grade A+
7. Which operating system you use? Windows 98/98SE/ME/2K/XP, etc.
Linux
8. Is the problem constant, intermittent, or does it occur at a specific time of day? If it is an intermittent problem, a 24hr smokeping is recommended.
intermittant, don't yet see any correlation to time of day, issue seems to be varying signal levels
9. Include any firewall and/or anti-virus software you have installed and what version you have.
Linux iptables
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