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Missed Frame
When a frame arrives at the device and there is no buffer available,
the hardware drops the frame and increments the missed frame
counter.
too long (> nnnn bytes)
Number of packets received that were greater than the configured
frame size (nnnn) and as a result were discarded.
aborted frame
Number of packets received that were aborted by the sender or a
line error.
DMA/FIFO overrun
The number of times the serial interface card could not send data
fast enough to the system packet buffer memory to receive packets
from the network.
L & F bits not set
On serial interfaces, the hardware sets input-descriptor information
for arriving frames. If the buffer can accept the complete frame
upon arrival, the hardware sets both the last and first bits of the
frame, indicating that the buffer accepted the complete frame. If
either of the bits is not set, the packet is dropped, the L & F bits not
set counter is incremented, and the buffer is cleared for reuse.
Note: It is unlikely that the L & F bits not set counter will be
affected by traffic.
Output frame counters:
DMA/FIFO underrun errors
Number of times the serial interface card could not retrieve data
fast enough from the system packet buffer memory to transmit
packets onto the network.
Output aborts sent
Number of transmissions that were aborted as requested by
upper-level software.
V.34 and the GWCON Commands
While V.34 has its own monitoring process for monitoring purposes, the router also
displays configuration information and complete statistics for devices and circuits
when you use the interface, statistics, and error commands from the GWCON
environment. You can also use the GWCON test command to test DCEs and
circuits.
Note: Issuing the test command to the V.34 serial interface causes the current call
to be dropped and re-dialed.
For more information on the GWCON command, see “Chapter 10. The
Operating/Monitoring Process (GWCON - Talk 5) and Commands” on page 127.
Statistics for V.34 Interfaces and Dial Circuits
Use the interface command at the GWCON (+) prompt to display statistics for V.34
serial line interfaces and dial circuits.
Configuring V.34
Configuring V.34 607