User manual

Obtaining Status and Statistical Information
Page 29-45
Physical Layer Information
The statistics shown in this section are taken at the physical, or serial, interface level.
Administrative/Operational Status
This field shows the Administrative and Operational Status of this
WSX port. The status
indicator before the slash refers to the Administrative Status. If UP, then the port has been
enabled and can transmit data as long as its Operational Status is also UP. If the Adminis-
trative Status is DN, then the port will not pass data even if its physical connection is
good.
The status indicator after the slash refers to the Operational Status. If UP, then the port is
capable of passing data as long as it has been logically enabled at the Administrative
level. If
DN, then the port cannot pass data because of a problem in the physical connec-
tion (e.g., cable disconnected, WSX could not detect cable type) or because the port is
Administratively Down.
Speed BPS
The configured speed of the port. For a physical
DTE port, the actual rate is determined
by the DCE device to which the WSX is attached (i.e., a modem or DSU). For a physical
DCE port, the actual rate is the rate configured through the frmodify command.
Intf Type
The type of cable that is plugged into the
WSX port. The cable may be DCE or DTE and
one of 5 different serial types. See Intf Type on page 29-39 for further information.
Receive CRC Errors
The total number of frames with an invalid frame check sequence received on the port
since the last time the switch was initialized.
Receive Aborts
The total number of frames received that were terminated with an
HDLC abort sequence
since the last time the switch was initialized. An abort sequence consists of 7 contiguous
bits of ones (1111111).
Receive Overruns
The total number of frames that were not received on the port because the system could
not keep up with the data flow. Receive overrun errors include buffer errors and errors
reported by the
RISC processor.
Transmit Overruns
The total number of frames that were not transmitted on the port because the system
could not keep up with the data flow. Transmit overrun errors include buffer errors and
errors reported by the
RISC processor.
Signal Errors
The total number of frames that failed to be received or transmitted due to a loss of
modem signals since the last time the switch was initialized. If the
WSX port is a physical
DTE, then this count is the number of frames dropped due to a loss of the Data Set Ready
(DSR) signal. If the WSX port is a physical DCE, then this count is the number of frames
dropped due to a loss of the Data Terminal Ready (DTR) signal.