Recently upgraded my POE switch to a fully managed Aruba 2500. Now I have a ton of bells and whistles to play with, one of them being cable diagnostics with TDR (Time-Domain Reflectometer). One of my cable runs to a camera produced this result:
Interface name : gigabitethernet0/0/12
Test status : Completed
Normal cable length : 0 metres
Pair 1-2
--------
Pair status : Normal
Pair 3-6
--------
Pair status : Normal
Pair 4-5
--------
Pair status : Open
Distance fault : 6 metres
Pair 7-8
--------
Pair status : Short
Distance fault : 11 metres
_
That same cable PASSES the cable test on my Southwire M300P network cable tester. Several other cables also indicate concerning results from the TDR diagnostic.
Running a simple PING from that same switch through the cable to the camera produces:
Sending 5, 100-byte ICMP Echos to 192.168.1.120, timeout is 2 seconds: !!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 0.365/6.602/25.228 ms
_
Should I be concerned about the TDR diagnostic showing an OPEN pair and a SHORTED pair on the cable, or am I reading the diagnostic incorrectly?
Interface name : gigabitethernet0/0/12
Test status : Completed
Normal cable length : 0 metres
Pair 1-2
--------
Pair status : Normal
Pair 3-6
--------
Pair status : Normal
Pair 4-5
--------
Pair status : Open
Distance fault : 6 metres
Pair 7-8
--------
Pair status : Short
Distance fault : 11 metres
_
That same cable PASSES the cable test on my Southwire M300P network cable tester. Several other cables also indicate concerning results from the TDR diagnostic.
Running a simple PING from that same switch through the cable to the camera produces:
Sending 5, 100-byte ICMP Echos to 192.168.1.120, timeout is 2 seconds: !!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 0.365/6.602/25.228 ms
_
Should I be concerned about the TDR diagnostic showing an OPEN pair and a SHORTED pair on the cable, or am I reading the diagnostic incorrectly?