50m Ethernet problems?

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Jake Stone

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Sep 24, 2013
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So I used powerline adapters before I changed ISP
The new ISP (B) has put the router in a different place to the old ISP (A)

A said 40 download and 10 upload
I got 37/9

B have said 150/12 and I'm was getting 39/9

I bought a 50M Ethernet cable and am getting ~65/10 with a 30ms ping

Out of 150Mbps I'm getting 65, is it down to the length of the Ethernet cable or something else?

Thank you
 
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Are you using a shielded or unshielded Ethernet cable? EM interference might be causing errors in transmission, slowing down your data transfer rates. Is the 30ms ping the delay between your PC and your router? Can you try pinging your router with a shorter cable, then see if the latency is ~29ms or less. The latency difference should only be less than 0.01 ms. Cable length's effect on speed and latency should actually be quite negligible since electricity travels at about the speed of light in copper wire.
 
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To test whether the cable is the cause of your poor latency, could you plug your laptop to your router with another cable, then see if the latency differs significantly from your original test.

Your cable appears to be a Cat5e one. It's supposed to give you 1000Mbps and it shouldn't have problems with crosstalk or EM interference. The signal isn't supposed to degrade that significantly at 50m. You might have gotten a Cat5 cable instead of the Cat5e one shown on the Amazon page.
 
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Just pulled a bit of carpet up and it does say on the cable 'Cat.5e' but that could just be printed on there?

Will try with a laptop shortly
 
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I guess you get what you pay for haha
I didn't have a lot of money to be honest and was fed up with the -40 using powerline adapters

If I bought a crimping tool and some connectors would doing that make the cable any better or is it the actual cabling inside the shielding/sleeve?
 
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That cable should work exactly the same as a different one and if it doesn't then I would be asking questions.

Pretty much the only thing that can really be wrong is the ends are not put on properly. It takes some practice so likely the first few times you will make bad cables. The guys at a cable company generally have lots of practice and most use a meter to test every cable.

One thing I have found is some dishonest companies use CCA cable instead of pure copper. CCA cable does not actually meet the standard for cat5e but since the term "cat5e" is not restricted they cheat. You should also see TIA/EIA 568 stamped on cables that actually meets the standard.

CCA cable mostly work but does not work at 100m and people have reported issue with poor connection between the ends and this type of cable.
 
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The first line is basically saying an Ethernet is an Ethernet. It works or doesn't?

There's plenty of tutorials online and with over 20m of cable to spare I guess it's worth a shot?

I think I may have a bad cable
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Its hard to describe but you can feel when the wire is fully seated in the rj45 it just takes practice.

The common problem is that one wire out of the 8 does not make full contact with the pins. It makes enough so a simple tester will say the cable is correct but it will not pass data without errors. If you were to hook it to a TDR meter it would send data over the cable and be able to tell you which connection likely was causing the error....you still have to cut off and replace the end. Unfortunately TDR are still not things your general person has because of the cost.
 
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Does ETA/TIA 568B mean good or bad?

Also, the IT block in my college has a TDR meter but I doubt they would let me borrow it and I don't really want to carry a 50m Ethernet cable around

I guess i'll deal with it until I can buy a proper one
Do you know any reputable sites that offer good quality Ethernet cables?
 
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It generally means the manufacture of the cable paid to license the right to put it on the cable. In theory at least it means the cable was manufactured to that standard.

Normally it is extremely rare to get a cable from pretty much anyplace that does not work. I have found a bad cable that was included with a cisco router and the ethernet cable bag had a cisco part number on it.

If you can borrow a crimper the ends are pretty cheap you might as well try. You would be able to feel or see damage to the cable itself.
 
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Well that's a positive then haha

I'll ask in college and see what I can do, thanks for your help, and the other guys, thanks
 
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