Cable Length with cisco command

[paultim68]

Hi

Desktop / Laptop / AP / Printers are connected to the switch 2960. which command on cisco switch tells me the distance or cable length from switchport to the host.

cheeers

Paul

[smitesh kharecha]

Hi Paul,

None as far as I know.

Regards,

Smitesh

[Edwin Summers]

You may be interested in leolaohoo's document:

https://supportforums.cisco.com/docs/DOC-18983

How to use Time-Domain Reflectometer (TDR)

[Amit Singh]

there is not a command as such. You can only troubleshoot the connectivity use TDR but it does not tell you the cable length.

Sent from Cisco Technical Support iPad App

[Leo Laohoo]

there is not a command as such. You can only troubleshoot the connectivity use TDR but it does not tell you the cable length.

Yes it does. 

The TDR command combo will tell you the length of the cable.

[Amit Singh]

Many thanks guys for the post. Sorry, I was not aware of the fact that we can really do that.

Good to know that it can be done.

Cheers,

Sent from Cisco Technical Support iPad App

[Leo Laohoo]

Thanks for the ratings Amit.

Apologies not necessary.  That's one of the intention of this Forum isn't it?  Share information and knowledge? 

[AlexMontis61951]

I believe there is an answer (partial) to your questions that may have been overlooked by the previous answers I read.  

I always use this command below on new site installations to make sure the end-to-end cabling is not an excessive length due to the path taken.  Not sure if this is of any help to you.

show interfaces counters errors

Among it's uses it also can determine if the length of the cable run is excessive.  It cannot tell you exactly what you asked which as the segment lengths but it can tell you that end-to-end the entire run is suitable for use (not excessive).

ES6147#show int counters error

Port        Align-Err     FCS-Err    Xmit-Err     Rcv-Err  UnderSize  OutDiscards
Gi0/1               0           0           0           0          0            0             0
Gi0/2               0           0           0           0          0            0             0

"Late collisions can also indicate an Ethernet cable or segment that is too long. Collisions must not be seen on interfaces configured as full duplex. "

(quote from "Troubleshooting Switch Port and Interface Problems" on Cisco)