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Use the SHOW QUEUE display to do the following; (see also Section 3.1.4,
Remote Management of the MUXserver 100 (By Means of the Ethernet)):
•
Determine the current size of the queue.
•
Examine information about any or all of the queued remote connec-
tion requests.
•
Estimate how deleting entries with REMOVE QUEUE will affect
queue positions.
•
Monitor the frequency of requests for connections to specific printers
or applications devices.
The MONITOR QUEUE command generates a SHOW QUEUE display that
changes on your screen as remote connection requests are queued and
dequeued.
NOTE
Frequent use of MONITOR QUEUE and other MONITOR com-
mands require more MUXserver 100 resources than most other lo-
cal mode commands. On a heavily utilized server, they should only
be used when necessary.
3.3 MONITORING THE REMOTE DECmux II NETWORK
The MUXserver 100 SHOW COMMUNICATIONS command enables you to
monitor the composite communications links. Chapter 5, Section 5.28 (SHOW
COMMUNICATIONS) describes the command and its display in detail.
3.3.1 Show Communications
The SHOW COMMUNICATIONS command allows general monitoring of the
state of the composite communications lines. RS-232 lines which are not in use
will have zero for all counters; RS-422 lines not in use will show a variety of
errors.
In normal use the Received CRC Errors and Total received errors should be
the same, and both should be a small percentage of the total received packets.
A high count in Received CRC Errors usually indicates a noisy communications
line or a fault in the cables from the modem to the MUXserver 100.
12
CHAPTER 3 MANAGING AND MONITORING
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