From: "Carlos E. R."
On 2021-11-27 4:36 p.m., Carlos E. R. wrote:
A continuity tester is not enough . . .
Regardless, if you actually need a better tester, get one, but the continuity tester meets my needs, unless the customer wants certification.
A good continuity tester, like the one in the link, certainly finds connection problems. For that price I will get one, they were more expensive when I tried a decade ago. As it happens, I just now stumbled upon the fact that the ethtool command supports the --cable-test and --cable-test-tdr operations. Unfortunately, they are not supported on my 15.3 system: root@orion> ethtool --cable-test eth0 netlink error: PHY driver does not support cable testing netlink error: Operation not supported root@orion> ethtool --cable-test-tdr eth0 netlink error: PHY driver does not support cable test TDR netlink error: Operation not supported root@orion> And neither the man page nor some quick googling turned up any way to tell what an interface needs in order for this to work. (Mine uses the r8169 driver, FWIW.) Sucn an interface would be better than a separate cable tester, especially if it could be tacked onto a laptop . . . -- Bob Rogers http://www.rgrjr.com/