4.6 Establish remote notification
The single best way to be notified of situations when they arise is through SNMP (discussed earlier). SNMP is an application of TCP/IP and available for any network utilizing TCP/IP as its network protocol. This makes it available for Windows 2000, Windows NT, Linux, OS/2, and so on.
Aside from SNMP, notification is possible on an operating system–by–operating system basis. Within Windows 2000, for instance, you can establish thresholds to notify you when conditions exist (such as when the available memory on a machine drops below a specified level). Such notifications are sent via the Messenger Service, as shown in Figure 5.9.