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2011年10月11日 · Here is simple procedure: Command to start the TDR: “test cable tdr interface <interface of your choice>”; Wait for about 5 to 7 seconds for the test to run; and. Command to show the result of the TDR test: “show cable tdr interface <interface of your choice>”.
2013年8月7日 · Checking the Cable Status Using the TDR. You can check the status of copper cables using the time domain reflectometer (TDR). The TDR detects a cable fault by sending a signal through the cable and reading the signal that is reflected back to it. All or part of the signal can be reflected back by any number of cable defects or by the end of the ...
2020年6月11日 · If it is, the result is not to be "trusted". There is a TDR "bug" affecting switches running IOS-XE versions 16.X.X and 17.X.X. The bug is the switch will provide incorrect output. See examples below: (Above) Pair A & B distance is "0". (Above) Pair "A" distance is (significantly) more than Pairs B, C and D.
2017年6月9日 · A TDR test can take a few seconds to run on an interface. Use 'show cable-diagnostics tdr' to read the TDR results. SW_Despacho_01#show cable-diagnostics tdr int g1/0/5. TDR test last run on: July 18 16:22:58. Interface Speed Local pair Pair length Remote pair Pair status.
2008年8月27日 · VIP Alumni. 08-27-2008 02:42 PM. You can use the TDR feature to diagnose and resolve cabling problems. TDR is supported only on copper Ethernet 10/100/1000 ports. It is not supported on 10/100 ports or small form-factor pluggable (SFP) module ports. For more information about TDR, refer to the software configuration guide for this release.
2011年1月27日 · Look at the output of the "sh cable test tdr". Pair A is detected to be 6 metres away from the switch port (+/- 1 metre error). Pair B is detected to be 39 metresaway from the switch port (+/- 1 metre error). Pair C and Pair D is not tested because your interface is a fastethernet interface. View solution in original post. 6 Helpful.
2020年6月23日 · connected: TDR running. 06-22-2020 05:19 PM. Hi there, Thanks for reading. I have a C9200L running IOS-XE 16.9.4. I have a port which seems to have a bad cable somewhere so I ran the cable-diagnostics TDR on the port. It's been 30 minutes and it shows Not Completed and the interface shows up/up (connected: TDR running). This test is intrusive.
2015年3月5日 · Hi, I'm finding what looks like Cisco blanket disabling the TDR (cable test) feature on switchports on the 2960-X if the downstream device is negotiated to anything other than 1000Mbps. Is this done intentionally, or am I hitting some kind of bug? When running "test cable tdr int <int>", and then...
2011年3月25日 · I was running the cable-diagnostics tdr test and show command on a 3560e switch. It returned a pair status of failed. Does anyone know what that staus means? It does not show as a valid status in the Cisco documentation I have found so far. Any hep would be appreciated. 0230_3560e_48_SW1#test cable...
2017年2月7日 · Hello Guys, We are facing latencies on our LAN. we have a WS-C3750X-48PF-S switch with poe and phones in it. I would like to test the cables by cable-diagnostics tdr. SW-FRPAU-X00I1B-AUSR#sh cable-diagnostics tdr interface Gi1/0/11 TDR test last run on: February 07 10:51:16 Interface Speed Local p...
