04-30-2008 10:22 AM
How does one configure Time Domain Relectometry (TDR) on the EX copper ports?
TDR is mentioned in the Datasheet, but I haven't found anything relevant in the 9.1 documentation.
Thanks.
05-04-2008 05:34 AM
05-09-2008 12:41 AM
Actually, ignore my last post - now that I've got a switch in front of me, use the following:
request diagnostics tdr start interface <interface name>
show diagnostics tdr OR
show diagnostics tdr interface <interface name>
When you are finished, use:
request diagnostics tdr interface abort interface <interface name>
This will reset any previous diagnostics run on the interface. The output looks like this:
dfex@EX4200> show diagnostics tdr interface ge-0/0/0
Interface TDR detail:
Interface name : ge-0/0/0
Test status : Passed
Link status : Down
MDI pair : 1-2
Cable status : Normal
Distance fault : 0 Meters
Polartiy swap : N/A
Skew time : N/A
MDI pair : 3-6
Cable status : Normal
Distance fault : 0 Meters
Polartiy swap : N/A
Skew time : N/A
MDI pair : 4-5
Cable status : Impedance Mismatch
Distance fault : 0 Meters
Polartiy swap : N/A
Skew time : N/A
MDI pair : 7-8
Cable status : Impedance Mismatch
Distance fault : 1 Meters
Polartiy swap : N/A
Skew time : N/A
Channel pair : 1
Pair swap : N/A
Channel pair : 2
Pair swap : N/A
Downshift : N/A