Cisco TDR Test Question

[eddieschus716@gmail.com]

Working off a WS-C4510R+E

Ran TDR test on a port and here are the results:

Gi4/34 1Gbps

1-2 54 +/-1m Unknown Terminated
3-6 54 +/-1m Unknown Terminated
4-5 36 +/-1m Unknown Open
7-8 36 +/-1m Unknown Open

I believe terminated represents "Normal" now in newer switches but two pairs show as Open. Is that a problem?

[Flavio Miranda · Accepted solution]

Hi

 Theorically not as Ethernet pinout is :

1 - TX+

2 - TX-

3 - RX+

6 - RX-

But , honestly, I dont like it. If one pin is not ok, I prefer fix it.

[eddieschus716@gmail.com]

I will most likely replace the cable. It connects to an AP that has inconsistent speed tests. Upload is always good but every speed test the download speeds change.

[Leo Laohoo]

TDR result in a 4k and 6k are "different". 

Terminated means "Normal". 

Open means the same as the rest.  

The result above means only Pair A & B are Terminated/Normal and C & D are OPEN. 

The difference between Pairs A & B is very "off" to Pairs C & D.  Is there a consolidation point in the roof?