https://community.ruckuswireless.com/t5/ICX-Switches/TDR-cable-diagnostics-only-works-on-master-switch-in-a-stack/m-p/11976#M171 Trying to avoid opening a case unless I have to.&nbsp; We have noticed that the TDR cable diagnostics works on the master switch in the stack, but not on any other stack members.&nbsp; This is on 08.0.30r.<BR />Any one know if this is a known problem and if there is a fix for it?<BR /><BR /><PRE>ID Type Role Mac Address Pri State Comment<BR />1 S ICX6450-48P member 0024.38c3.e540 235 remote Ready<BR />2 S ICX6450-48P member 0024.38c1.8080 225 remote Ready<BR />3 S ICX6450-48P active 0024.38c2.6900 255 local Ready<BR />4 S ICX6450-48P standby 0024.38bc.13c0 245 remote Ready<BR />5 S ICX6450-48P member 748e.f80a.e380 215 remote Ready<BR /><BR />#phy cable-diagnostics tdr 1/1/1<BR />#sho cable-diagnostics tdr 1/1/1<BR /><BR />Port Speed Local pair Pair Length Remote pair Pair status<BR />---- ----- ---------- ----------- ----------- -----------<BR />1/1/1 UNKWN Pair A 0000003M Failed<BR /> Pair B 0000003M Failed<BR /> Pair C 0000003M Failed<BR /> Pair D 0000003M Failed<BR /><BR />#phy cable-diagnostics tdr 3/1/1<BR />#sho cable-diagnostics tdr 3/1/1<BR /><BR />Port Speed Local pair Pair Length Remote pair Pair status<BR />---- ----- ---------- ----------- ----------- -----------<BR />3/1/1 UNKWN Pair A 0000054M Open<BR /> Pair B 0000058M Open<BR /> Pair C 0000056M Open<BR /> Pair D &lt;=3 M Pair C Impedance mismatch</PRE> Fri, 29 Jun 2018 20:31:04 GMT howardtopher 2018-06-29T20:31:04Z https://community.ruckuswireless.com/t5/ICX-Switches/TDR-cable-diagnostics-only-works-on-master-switch-in-a-stack/m-p/11976#M171 Trying to avoid opening a case unless I have to.&nbsp; We have noticed that the TDR cable diagnostics works on the master switch in the stack, but not on any other stack members.&nbsp; This is on 08.0.30r.<BR />Any one know if this is a known problem and if there is a fix for it?<BR /><BR /><PRE>ID Type Role Mac Address Pri State Comment<BR />1 S ICX6450-48P member 0024.38c3.e540 235 remote Ready<BR />2 S ICX6450-48P member 0024.38c1.8080 225 remote Ready<BR />3 S ICX6450-48P active 0024.38c2.6900 255 local Ready<BR />4 S ICX6450-48P standby 0024.38bc.13c0 245 remote Ready<BR />5 S ICX6450-48P member 748e.f80a.e380 215 remote Ready<BR /><BR />#phy cable-diagnostics tdr 1/1/1<BR />#sho cable-diagnostics tdr 1/1/1<BR /><BR />Port Speed Local pair Pair Length Remote pair Pair status<BR />---- ----- ---------- ----------- ----------- -----------<BR />1/1/1 UNKWN Pair A 0000003M Failed<BR /> Pair B 0000003M Failed<BR /> Pair C 0000003M Failed<BR /> Pair D 0000003M Failed<BR /><BR />#phy cable-diagnostics tdr 3/1/1<BR />#sho cable-diagnostics tdr 3/1/1<BR /><BR />Port Speed Local pair Pair Length Remote pair Pair status<BR />---- ----- ---------- ----------- ----------- -----------<BR />3/1/1 UNKWN Pair A 0000054M Open<BR /> Pair B 0000058M Open<BR /> Pair C 0000056M Open<BR /> Pair D &lt;=3 M Pair C Impedance mismatch</PRE> Fri, 29 Jun 2018 20:31:04 GMT https://community.ruckuswireless.com/t5/ICX-Switches/TDR-cable-diagnostics-only-works-on-master-switch-in-a-stack/m-p/11976#M171 howardtopher 2018-06-29T20:31:04Z https://community.ruckuswireless.com/t5/ICX-Switches/TDR-cable-diagnostics-only-works-on-master-switch-in-a-stack/m-p/11977#M172 I would open a case on this one. It should be a pretty quick test in the lab for the TAC engineer.&nbsp; Wed, 11 Jul 2018 13:16:02 GMT https://community.ruckuswireless.com/t5/ICX-Switches/TDR-cable-diagnostics-only-works-on-master-switch-in-a-stack/m-p/11977#M172 BenBeck 2018-07-11T13:16:02Z