Switches Not Connecting at 1000Mbps

[vapor]

Good Day

I have wired the house with Cat 5e ethernet cables. My cable modem connects to a WiFi router that connects to a TP-LINK TL-SG108 switch. This switch then connects to other devices, routers that have been converted to switches and switches.

The issue I have is the connection between the primary switch (TP-LINK TL-SG108) and that of the switch in the Living Room (TRENDnet TEG-S80G). Both switches are 8 ports unmanaged. The issue is that the connection between these 2 switches is only 100Mbps according to the lights on the ports of each switch.

Why would this be the case when both switches are Gigabit switches? Other devices and routers converted to switches are connected at 10000Mbps on the TP-LINK TL-SG108 according to the port light. There are 2 devices which connect at 100Mbps but that is expected because those devices are only capable of 100Mbps.

The primary switch (TP-LINK TL-SG108) is connected by a Cat 5e cable to a port that runs a Cat 5e cable under the floors to a port in the living room that is then connected via another Cat 5e cable to the secondary switch (TRENDnet TEG-S80G).

I'm trying to figure out why the switches are only connected at 100Mbps instead of the expected 1000Mbps. The cables mentioned in the above paragraph is Cat 5e. Any suggestion is much appreciated.

Attached is the LAN network layout of my house.

 

[thiggins]

Bring the switches into the same room and see what the connection link rate is.

 

[jlake]

Try powering down your entire network for a couple of minutes. Also, you can try different ports.

 

[CaptainSTX]

Try using a different and shorter cable. Could possibly be a bad termination or perhaps the cable is to long.

As Tim said try connecting the two devices using a short Cat 6 cable and see if the link rate is correct.

 

[sinshiva]

takee off the 100mbit devices, leaving at least a gigabit device and restart everything. had the same problem. try adding the 100mbit devices after.

 

[Daybreak]

Howdy,
cables cables cables
termination termination termination

and not all cables are created equal. The cable might say its 5e, but it might not test out to spec.

 

[stevech]

some cheap cables are 2 pair, not 4 pair as required for 1000BT

 

[stevech]

takee off the 100mbit devices, leaving at least a gigabit device and restart everything. had the same problem. try adding the 100mbit devices after.

If that's a cure, toss the product!

 

[tipstir]

It's called Duff Ports. Duff bad, the issue is with the controller inside it must be overheating usually causes this issue. You have a lot of traffic going through these unmanage switches. Sometimes they just can't handle it. Nothing you can do about it like the other poster said replace them. Time to think about managed switches that are designed to handle any type of traffic.

 

[vapor]

Thank you so much for all these feedback. Was going to try the suggestions but then we got 8 inches of snow

Will give this a try and report back here.

Thank you so much for all these feedback.

 

[vapor]

Looks like I found the issue: it was the cable that was connected from primary switch to the wall port that would then connect the secondary switch. Switching that out helped.

Just a bit more information as a lesson learnt as to what I did to troubleshoot:

I took the secondary switch from the living room and connected it directly to the primary switch as Tim suggested and it was connected at 1000Mbps.

I then took the switch to the bedroom where the connection with the wireless router turned switch was confirmed using a 1000Mbps and plugged it in there. When the switch showed 1000Mbs connection, I thought there was issue with the living room wall port.

I took the wireless router turned switch from that bedroom and plugged it into the living room port and it was also connected at 100Mbps. So this suggested that connection between the living room wall port and the main wall port was an issue.

I then swapped out the cable from the primary switch to the wall port with a shorter cable and that resolved the issue!

So it was a 14 feet Cat 6 cable that was causing the issue! Using a shorter Cat 5e cable was the resolution

Thank you all once again for the suggestions!

 

[stevech]

Looks like I found the issue: it was the cable that was connected from primary switch to the wall port that would then connect the secondary switch. Switching that out helped.

Just a bit more information as a lesson learnt as to what I did to troubleshoot:

I took the secondary switch from the living room and connected it directly to the primary switch as Tim suggested and it was connected at 1000Mbps.

I then took the switch to the bedroom where the connection with the wireless router turned switch was confirmed using a 1000Mbps and plugged it in there. When the switch showed 1000Mbs connection, I thought there was issue with the living room wall port.

I took the wireless router turned switch from that bedroom and plugged it into the living room port and it was also connected at 100Mbps. So this suggested that connection between the living room wall port and the main wall port was an issue.

I then swapped out the cable from the primary switch to the wall port with a shorter cable and that resolved the issue!

So it was a 14 feet Cat 6 cable that was causing the issue! Using a shorter Cat 5e cable was the resolution

Thank you all once again for the suggestions!

Perhaps just a bad cable or intermittent connector.