Low speed with two separate cables

[Ilan Yakov]

Hi.

 

I am moving to the top floor in my house and am setting up a jank ethernet connection by connecting two cables through the window.

The cable that's going down from the roof is a little squished by the windows (don't know if that's a problem).

In any case, the cables i'm using are CAT5e and the adaptor between them is CAT6 and the speed I should get is 200Mbps but am only getting a little less than 100Mbps...

What can cause that? How can this be fixed?

[SupaKomputa]

it's operating at 100mbps. check the status in network properties.

[Ilan Yakov]

1 minute ago, SupaKomputa said:

it's operating at 100mbps. check the status in network properties.

It is. But why is that? Everything should be fine from my perspective...

It's not the PC but something with the connection.

[SupaKomputa]

try this:

https://support.killernetworking.com/knowledge-base/ethernet-link-speed-capped-at-100-mbps/

[Wufflez]

Some Cat5e cables have a maximum bandwidth of 100Mbs, even less if it's a particularly very long cable

[Ilan Yakov]

I'm using two 5 meters cables...

Would you suggest to get a 10 meters CAT6 cable or at least 2 CAT6 5 meters cables?

[Ilan Yakov]

2 minutes ago, Wufflez said:

Some Cat5e cables have a maximum bandwidth of 100Mbs, even less if it's a particularly very long cable

I'm using two 5 meters cables...

Would you suggest to get a 10 meters CAT6 cable or at least 2 CAT6 5 meters cables?

[Wufflez]

10 minutes ago, Ilan Yakov said:

I'm using two 5 meters cables...

Would you suggest to get a 10 meters CAT6 cable or at least 2 CAT6 5 meters cables?

Are you able to test the speed using only the Cat5e and then test again only using the Cat6?

[Ilan Yakov]

2 minutes ago, Wufflez said:

Are you able to test the speed using only the Cat5e and then test again only using the Cat6?

I will order a CAT6 cable and check.

It's probably a light pysical damage with the cable (Nothing visible but one of the cables I'm using is fairly old).

I hope getting a new cable will fix this issue.

Thanks for the help. I will update once I get the new cable.

[Wufflez]

9 minutes ago, Ilan Yakov said:

I will order a CAT6 cable and check.

It's probably a light pysical damage with the cable (Nothing visible but one of the cables I'm using is fairly old).

I hope getting a new cable will fix this issue.

Thanks for the help. I will update once I get the new cable.

Thanks. I hope to hear about how it goes for you.

[Donut417]

4 hours ago, Wufflez said:

Some Cat5e cables have a maximum bandwidth of 100Mbs, even less if it's a particularly very long cable

Your confusing Cat5 with Cat5e, the Standard say a Cat5e cable should be able to do 1 Gbps up to 100 Meters. Thats the standard. Cat5 caps out at 100 Mbps. 

 

 

4 hours ago, Ilan Yakov said:

It is. But why is that? Everything should be fine from my perspective...

It's not the PC but something with the connection.

It could be for some reason the NIC in your PC is not negotiating the speed correctly or the NIC is only rated for 100 Mbps. On the other hand it could be the Switch or router your connected to is only rated for 100 Mbps. Either way Id check to see what the Networking status is on the PC that is affected. Double check the specs of your router to see what the Ethernet ports are rated for. 

[Scheer]

If any one of the eight wires are broken, it drops from 1gbps to 100mbps, you likely just have a bad spot in the cable somewhere.

 

If you have a volt meter, you can do a continuity check on each wire on both the cables and adapter. If the cable and adapter test good it could be a setting in your network adapter, or you might be connected to a 100mbps port on a switch/router somewhere.

[Ilan Yakov]

7 hours ago, Scheer said:

If any one of the eight wires are broken, it drops from 1gbps to 100mbps, you likely just have a bad spot in the cable somewhere.

 

If you have a volt meter, you can do a continuity check on each wire on both the cables and adapter. If the cable and adapter test good it could be a setting in your network adapter, or you might be connected to a 100mbps port on a switch/router somewhere.

After checking very carefully, one of the cables was problematic and limited the speed to 100Mbps. I tried using that cable alone and sometimes the speed was lower, as much as less than 10Mbps...

I will replace it soon with a new cable.

Thank you all for your help. Definitely something I learned from.