Cable tester program?

Talic · March 2009

Is there a cable tester program for us poor / cheap folks?

tiersten · March 2009

Plug it in and see if you can communicate with whatever is on the other end? :P

Some NICs can do basic cable diagnostics and more advanced ones have TDR features but you'll still want a proper cable tester. No program is going to be able to do that.

Talic · March 2009

Well I'm trying to make crossover cables and I'm not sure if the laptop is auto sensing it.

tiersten · March 2009

Does the laptop or switch actually support auto MDI/MDI-X?

hypnotoad · March 2009

For all you Cisco fans out there...behold, the coolest feature ever

3560#sho cable-diagnostics tdr interface gigabitEthernet 0/1
TDR test last run on: August 30 08:01:35

Interface Speed Local pair Pair length        Remote pair Pair status
&#8212;&#8212;&#8212; &#8212;&#8211; &#8212;&#8212;&#8212;- &#8212;&#8212;&#8212;&#8212;&#8212;&#8212; &#8212;&#8212;&#8212;&#8211; &#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8211;
Gi0/1     1000M Pair A     54   +/- 4  meters Pair A      Normal             
                Pair B     52   +/- 4  meters Pair B      Normal             
                Pair C     53   +/- 4  meters Pair C      Normal             
                Pair D     54   +/- 4  meters Pair D      Normal             
3560#

Talic · March 2009

hypnotoad wrote: »

For all you Cisco fans out there...behold, the coolest feature ever

3560#sho cable-diagnostics tdr interface gigabitEthernet 0/1
TDR test last run on: August 30 08:01:35

Interface Speed Local pair Pair length        Remote pair Pair status
——— —– ———- —————— ———– ——————–
Gi0/1     1000M Pair A     54   +/- 4  meters Pair A      Normal             
                Pair B     52   +/- 4  meters Pair B      Normal             
                Pair C     53   +/- 4  meters Pair C      Normal             
                Pair D     54   +/- 4  meters Pair D      Normal             
3560#

Something like that I was looking for, very cool.

But I think I got it now, I had old tcp/ip settings from a couple months ago on my laptop from doing labs with it. I almost never use my Ethernet port since I use my wireless with it.

tech-airman · March 2009

Talic wrote: »

Is there a cable tester program for us poor / cheap folks?

Talic,

What kind of cables?

tech-airman · March 2009

hypnotoad wrote: »

For all you Cisco fans out there...behold, the coolest feature ever

3560#sho cable-diagnostics tdr interface gigabitEthernet 0/1
TDR test last run on: August 30 08:01:35

Interface Speed Local pair Pair length        Remote pair Pair status
——— —– ———- —————— ———– ——————–
Gi0/1     1000M Pair A     54   +/- 4  meters Pair A      Normal             
                Pair B     52   +/- 4  meters Pair B      Normal             
                Pair C     53   +/- 4  meters Pair C      Normal             
                Pair D     54   +/- 4  meters Pair D      Normal             
3560#

hypnotoad,

Which Cisco IOS version are you using on that 3560?

APA · March 2009

you have to run test cable-diagnostics tdr interface [type] [mod\port] first before running the show command.

Without running the test you will have no output from the show command...... as the device has to run the tdr test over the pairs... and remember it's for copper ports

and BTW - Port status must be Up,Up

hypnotoad · March 2009

A.P.A wrote: »

you have to run test cable-diagnostics tdr interface [type] [mod\port] first before running the show command.

Without running the test you will have no output from the show command...... as the device has to run the tdr test over the pairs... and remember it's for copper ports

and BTW - Port status must be Up,Up

Yes...and also I believe these tests are intrusive so they will cut off your port's communication when they run, so don't break stuff

Cable tester program?

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