Are all cat5e cables the same??

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danielmorris46

Commendable
Sep 24, 2016
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Hey all, recently I have had my internet speed increased to 100Mbps so I decided to test it out on my computer. The weird thing is that with the three cat 5e cables I have there is only one cable that gives me 90+Mbps every time! The other cables rarely show above 50Mbps. Why is this?? I plug all the cables in the same port on the router and in the same port on my computer. The fast cable is in fact longer than the other cables and all of the cables seem to be in good condition. I thought that all cat5e cables were supposed to deliver at least 100Mbps
 
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Cat5e can go to 1g at 100 meters. The length of the cable makes no difference as long as it is less than 100 meters.

When you plug them into 100m ports you should see the 90+m rate you are seeing.

The problem lately is there are a lot of dishonest companies selling cables. The term CAT5e technically does not have a meaning unless you also say eia/tia which is a certification that they must pay to have.

The cables you see that cause issues are copper clad aluminum ie CCA and flat or thin cable that are using wires that are too small.

The standard says cables must be between 23-26 guage and be pure copper.

This mean none of those cables can be certified cables because they fail the wire requirement. Some of the vendors try...
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bill001g

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Aug 9, 2012
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Cat5e can go to 1g at 100 meters. The length of the cable makes no difference as long as it is less than 100 meters.

When you plug them into 100m ports you should see the 90+m rate you are seeing.

The problem lately is there are a lot of dishonest companies selling cables. The term CAT5e technically does not have a meaning unless you also say eia/tia which is a certification that they must pay to have.

The cables you see that cause issues are copper clad aluminum ie CCA and flat or thin cable that are using wires that are too small.

The standard says cables must be between 23-26 guage and be pure copper.

This mean none of those cables can be certified cables because they fail the wire requirement. Some of the vendors try to say that their cable can run the same speeds but since they are not certified you pretty much have to take their word for it.
You could also have a damaged cable it does not take much to pull the ends just slightly lose.

Still the symptom of a poor cable is mostly packet loss, you should see this in the interface stats.
 
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