METRObility Optical Systems 8124-01-M - Manual (Page 104)

104 CenturyStack 8100 Managed Hub
transmissions. This counter is incremented by one each time
that a port automatically isolates as a consequence of false
carrier events. The conditions which cause a port to
automatically isolate are defined by the transition from the
False Carrier state to the Link Unstable state. The port
automatically recovers.
Symbol Errors (100Mbps only): Total symbol errors for
100Mbps transmissions. This counter is incremented by one for
each valid length packet received at the port with at least one
occurrence of an invalid data symbol. This can increment only
once per valid carrier event. The approximate minimum time
for rollover of this counter is 7.4 hours at 100Mbps.
Total Errors: Total errors received by the port including FCS
errors, Align errors, Frame Too Long, Short Events, Late
Events, Very Long Events and Rate Mismatch.