Specifications

32 AT-8900, AT-9900, AT-9900s Series Switches
Software Release 3.0.2
C613-03092-00 REV C
Troubleshooting Cables
Cable test The virtual cable test facility diagnoses cable faults and the approximate
distance to them on Gigabit Ethernet RJ-45 ports for the following switches:
■ AT-9924T
■ AT-9924T/4SP
■ AT-9924Ts
See “Test Facility” on page 40 for more information or the Te s t F a ci l it y chapter
in the Software Reference. Not all copper SFPs support this feature; however,
those listed in “Approved SFP transceivers” on page 26 do support it.
Cable lengths Approximate cable lengths are reported for gigabit Ethernet RJ-45 ports on the
following switches:
■ AT-9924T
■ AT-9924T/4SP
■ AT-9924Ts
Cable length is reported after the link is established. To check the length, use
the show switch port command described in the Switching chapter in the
Software Reference. The Cable Length parameter in the output of this
command can be one of the following values:
■ <50m
■ 50-80m
■ 80-110m
■ 110-140m
■ >140m
■ - (either the port link is down, or the port is operating at 10Mbps or
100Mbps)