Polling - Paradyne COMSPHERE 6800 Series Multiplexer Management And Configuration Manual

COMSPHERE 6800 Series Nework Management System

Polling

The 6800 Series NMS receives alarm information from an ACCULINK multiplexer network via
two independent sources, allowing you to control the polling and alert reporting processes
separately for ACCULINK multiplexers. The first method is the asynchronous event reporting
mechanism and the second is the NMS polling mechanism.
The ACCULINK multiplexers report messages, called events in ACCULINK terminology,
asynchronously whenever they occur, via the packet network within the ACCULINK network.
These messages can be sent to the 6800 Series NMS and/or to two other event destinations (i.e.,
printers, other nodes) autonomously. These multiplexer messages are reported as either alarms or
events to the 6800 Series NMS. Alarms are those multiplexer messages for which an associated
clear message will eventually be sent by the multiplexer when the fault condition is corrected.
Events are those multiplexer messages that are provided for informational purposes and since they
are considered ''one-time only," no clear message is associated with them.
The 6800 Series NMS ensures that alarm information is not lost by issuing a poll to the individual
multiplexer nodes inquiring about their current alarm status. The response to this poll is compared
with any outstanding asynchronous alarms and any alarm not previously received by the alert
reporting mechanism is then merged into the alert handling system.
The system polling field in the device profile controls only the polling mechanism for that node
and the Edit Alert Monitoring State (edams) command allows you to control independently both
the polling and asynchronous alert reporting mechanism for the entire network. Through this
command you can specify polling to allow the 6800 Series NMS to poll multiplexers on its polling
list while asynchronous alert reporting is turned off. Likewise, you can select asynch reporting to
allow the 6800 Series NMS to receive asynchronous event reports from the multiplexers having
device profiles while polling is turned off. To have the 6800 Series NMS poll multiplexers for
alarms and receive asynchronous alert reports, select polling & asynch reporting. Selecting off
turns off both polling and asynchronous alert reporting functions.
The asynchronous alert reporting mechanism can also be controlled with the Change Node
Configuration Parameters (chncp) command by setting the parameters in the node's event log 2
configuration. This command can be used to make the alert reporting mechanism active or
inactive for groups of events for any or all nodes. It has no effect on the alarm polling mechanism.
1-62 August 1994 6800-A2-GB21-10