Cabletron Systems 9A100 manual Events and Alarms, Event Categories

Switch Administration Events and Alarms

ELAN

Switch client on SW1,

SW2

ATM Link IP Route

SW1

Switch client

on SW2, 90.1.1.33

Switch client on SW1 is defined as SW2’s gateway to the Ethernet

NMS

90.1.1.254

Ethernet interface

128.205.99.254

Ethernet network 128.205.99.0

Figure 4-3 IP routing through SW1 for connectivity to the Ethernet network

4.4EVENTS AND ALARMS

The SmartSwitch 9A100 switch records and reports its operation in real-time through the use of events and alarms. An event is an occurrence of a significant activity. For instance, a port going down or a client joining an ELAN are examples of events. Alarms are a specific class of events defined as “events that the user needs to know about or attend to immediately.” Alarms do not always indicate switch faults. Alarms may also be informational events. For instance, “LECS Operational” is an example of an alarm that is not a switch fault, but is an activity that the user should know about immediately.

4.4.1Event Categories

Events are grouped into the following categories:

•Critical — Impacts the entire switch, leaving the system unavailable or in a degraded state

•Major — Impacts a feature of the switch, leaving the feature unavailable or in a degraded state

•Minor — Impacts the system or feature, leaving it in a sub-optimal state

•Informational — An occurrence of an activity that the user should know about

Both events and alarms are stored within circular memory buffers. When the buffers become full, older events and alarms are overwritten by newer entries. Both events and alarms are stored in shared RAM. However, the 40 most recent alarms are also stored in flash RAM. Storing these 40 alarms in flash RAM makes them persistent between reboots of the SmartSwitch 9A100 and provides information about the state of the switch prior to reboot.

SmartSwitch 9A100 User Guide 4-9