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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.25bis and the GWCON Commands
While V.25bis 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.25bis 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.25bis Interfaces and Dial Circuits
Use the interface command at the GWCON (+) prompt to display statistics for
V.25bis serial line interfaces and dial circuits.
To display the following statistics for a V.25bis serial line interface, use the interface
command followed by the
interface number
of the V.25bis serial line interface.
Example: interface 1
Self-Test Self-Test Maintenance
Nt Nt' Interface CSR Vec Passed Failed Failed
1 1 V.25/0 80000000 44 1 0 0
V.25bis MAC/data-link on SCC Serial Line interface
Adapter cable: RS-232 DTE RISC Microcode Revision: 1
V.24 circuit: 105 106 107 108 109 125
Nicknames: RTS CTS DSR DTR DCD R1 LL
V.25bis Operating Commands
592
MRS V3.2 Software User’s Guide