Packet loss problem

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uliczny.opryszek

uliczny.opryszek

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Sep 13, 2017
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Hello,

I have packet loss problem for a month. Can't play any games and it drives me crazy.

pingplotter results:

https://ibb.co/guAx4F
https://ibb.co/mpv8Bv

Things i have tried to fix it:

Replaced old modem to CISCO EPC3208
Replaced coax cable
Replaced ethernet cable
Replaced onboard NIC with TP-LINK TG-3468
Scanned for malware
ISP said everything is looking good.

I have no idea what i can do to fix it.
Please help me understand it.
 
Solution
Ralston18
Who knows what may be going on inside that wall.... Cable could have been crimped or damaged when pulled through.

Or now wet, chewed, corroded, etc..

Enjoyed the updates to your sketch - hang on to that sense of humor.

If your ISP does not replace the splitters, just get a couple of duplex splitters on your own. (I have a tendency to stop whenever I see one of our ISP guys around and beg an extra splitter from him or her. Generally use most of them somewhere within just a few months. Especially for exterior splitters.)

I avoid having unused splitter ports. If only two ports are needed - then only a duplex splitter.

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Ralston18

Ralston18

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Oct 11, 2014
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Again still seems to be "downstream".

However, for comparison purposes, what is the % PL when connectivity is working? Or working well enough that the PL's are not interfering or noticeable?

Your immediate % PL's are showing to be in the 3 - 7 % range.

Not sure what to suggest other than making some calls to your ISP. They may be able to spot some problem. May take a few calls until they actually see the problem and/or you can reach someone who is able to identify the culprit.
 
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Ralston18

Ralston18

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Does the following link present the User Guide for your Cisco Modem?

http://f.starman.ee/0000/0000/0001/files/CISCO_EPC3208_ENG.pdf

Is your network setup similar to the diagram on page 18?

With perhaps WAN connection (yellow port) going to a router instead of directly to a PC.

Note the splitter/filter in the diagram. They can often be problematic. You mentioned replacing the coax cable(s).

Swap out the splitter - they are very inexpensive and should be easy to obtain.

Or at least, disconnect the cables, clean the threads, blow out the dust and debris, and reconnect. That alone may help.
 
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uliczny.opryszek

uliczny.opryszek

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Sep 13, 2017
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My network setup looks like this.

https://ibb.co/hHRvrv

Modem is directly connected to PC, no router.

I have two splitters, ISP technician said that is correct connection (something about tensity).

So i have tried disconnecting the cables and blowing at everything i could. Tried changing the splitters, so only nr #1 was connected and then only nr #2, but packet loss occured anyway.

I will try to call my ISP again (i have called them 3 or 4 times), but i don't think they take my problem serious.
 
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Ralston18

Ralston18

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If splitter #2 is a three port splitter, try replacing with a duplex (two port) splitter.

Or a single coax cable between splitter 1 and the modem.

(Another option is a barrel connector that allows you to join two coax cables.)

I recognize the TV and the computer.

Not sure about the third device..... telephone?

Tensity - "termination" perhaps?

There are special termination caps that should be placed on unused coax ports. A proper terminator provides resistance. Most of the time the caps (if any) are just dust/dirt covers.
 
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uliczny.opryszek

uliczny.opryszek

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Sep 13, 2017
7
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Yes, this is telephone :D

I don't think i meant termination caps, but tension(?). I don't know how to explain in english.

I will think about your solution with replacing that 3 way splitter, but i think previous test would fix it if it was about splitters.
 
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Ralston18

Ralston18

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No disagreement that removing first one splitter and then the other would eliminate one or the other as being especially bad.

However, you are dealing with two splitters: either of which may be faulty to some degree. I would replace them if at all possible.

But first:

What is on the other end of that coax cable coming out of the wall? Can you find the other end and get to it?

May be another splitter there.... Or another cable: damaged, chewed on, corroded - some physical problem.



 
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Ralston18

Ralston18

Titan
Moderator
Oct 11, 2014
34,890
3,323
146,290
Who knows what may be going on inside that wall.... Cable could have been crimped or damaged when pulled through.

Or now wet, chewed, corroded, etc..

Enjoyed the updates to your sketch - hang on to that sense of humor.

If your ISP does not replace the splitters, just get a couple of duplex splitters on your own. (I have a tendency to stop whenever I see one of our ISP guys around and beg an extra splitter from him or her. Generally use most of them somewhere within just a few months. Especially for exterior splitters.)

I avoid having unused splitter ports. If only two ports are needed - then only a duplex splitter.

 
Upvote 1 Downvote
Solution
uliczny.opryszek

uliczny.opryszek

Prominent
Sep 13, 2017
7
0
510
I thought it will be too much mess, so i deleted that post :) but anyway you saw it, oh well.

I think that cable is fine, last one was 20 years old.

I will try to replace that splitter, thanks for advices.
 
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