Expert

Re: Intermittent speed and connections

ok, that is a 15 dB gain amplifier which is boosting the level to the 2 TV boxes by 11.5 dB each, however, there will be 3.5 dB loss  upstream and 7 dB thru the first 2 way.

 The modem will only have 3.5 dB of upstream loss.

 

 If the modem has          -2 dB ds and +43 US,

 the cable boxes have    +9 dB ds and  +47 US

 

 The amp is not needed or connected wrong  or something has changed

 

 

Cable boxes wirjk just fine at - 7 dB ds

 

Participant

Re: Intermittent speed and connections

I don't know what the signal strength is at the end of these two runs, but they are the longest runs in our house (think of it like an "L" with the input at the vortex and the runs to the end of the legs).  The tech who put that in, had a device to measure strength and felt it was needed. 

Also there are, what I assume, filters on the line to the modem and on the main Coax incoming line.

 

I am curious... If it was an issue of cabling, wouldn't the problem always be there instead of being somewhat cyclical over a 24 hour period?  or at least it would be more repetitive wouldn't it?  This has gotten worse over the last several months and only recently has it been so bad that it affects being able to utilize the internet connection as a useful tool.

 

 

Expert

Re: Intermittent speed and connections

uhhh... "Filters"  please describe...

 

 Is this a master and slave WHdvr system?

Those would be MOCA poe filters and there should be one where cable enters and one at the modem to keep the 1000-1500 mHz moca isolated

 

Participant

Re: Intermittent speed and connections

Here is some more data showing packet loss that may be of interest (note that this is worse than it was earlier today, in fact, early this am, there was zero lost packets) 

run at 2016-05-10 22:25:56 (ET)

Test
(From CA, USA)
LossMin
Latency
Avg
Latency
Max
Latency
Pass
Fail
basic ping
10s of 40 byte packets, 2 per second
0%19.0ms21.9ms36.5mspass
pass
low bandwidth stream
10s of 1400 byte packets at 56 kbit
12% 21.1ms27.9ms36.5ms
fail
medium bandwidth stream
10s of 512 byte packets ( 128 kbit )
19% 19.5ms20.9ms35.9ms
fail
higher bandwidth stream
10s of 1400 byte packets ( 384 kbit )
28% 21.2ms22.6ms40.3ms
fail
your first hop ping
stream of 40byte pings to 76.167.30.218
0% loss9.44msYou are 9.5ms
to your first hop
pass
pass

 

 

Earlier run at 2016-05-10 11:59:04 (ET)

Test
(From VA, USA)
LossMin
Latency
Avg
Latency
Max
Latency
Pass
Fail
basic ping
10s of 40 byte packets, 2 per second
0%78.4ms79.4ms80.1mspass
pass
low bandwidth stream
10s of 1400 byte packets at 56 kbit
0%81.2ms82.3ms84.3mspass
pass
medium bandwidth stream
10s of 512 byte packets ( 128 kbit )
0%79.3ms80.4ms101mspass
pass
higher bandwidth stream
10s of 1400 byte packets ( 384 kbit )
0%80.9ms82.2ms90.4mspass
pass
your first hop ping
stream of 40byte pings to 76.167.30.222
0% loss70.8msYou are 7.6ms
to your first hop
pass
pass
Expert

Re: Intermittent speed and connections

Jitter is expectedly worst at high bandwidth...

 

Participant

Re: Intermittent speed and connections

true, but it is the inconsistency that is troubling. 

Expert

Re: Intermittent speed and connections

What does it consider the "first hop ping"?  that looks like a computer to router issue

 

Participant

Re: Intermittent speed and connections

Glad you asked that...  Looks like it is the first IP hit outside of my LAN.  so for 9.44 ms that equates to the first host outside of my LAN (#2 below).  So if you add up those you get that first hop time.

I did a tracert to the test host and this is the first few hits:

  1    <1 ms    <1 ms    <1 ms  router.asus.com 
  2    16 ms     8 ms     8 ms  142.254.183.17

Participant

Re: Intermittent speed and connections

sorry, I missed your filters question. It is WHdvr so I would suspect they are moca filters. Ages ago I had moca adapters on this system, but those have been gone for years. However, I do have WHdvr.
Expert

Re: Intermittent speed and connections

Where are the low/med/hi tests going?

if outside TWC, it may be the transport interconnection

 

Need something like pingplotter with the min/ max columns shown