Loads (eg: Percentage Ethernet load, TRIB for IBM-style
point-to-point links)
Performance (eg: packets routed per second, idle time, CPU
load)
Error rates (collisions, BER, dropped packets, lost
tokens)
(and lots more)
Configuration of hosts, routers, bridges, etc.
Note that in many respects, the functions of network manager,
system manager and security manager are becoming increasingly
blurred.
Much of the day-to-day work of the network manager can be done
using simple, and freely available, utility programs (see next few
slides).
For more complex monitoring, the Simple Network Management
Protocol (SNMP) provides the network manager with the
means to observe the performance of every network device.