Network Monitoring
Done by network management software
Involves Network Operations Centers (NOCs)
- A centralized place enabling managers to monitor the network and respond to problems before users complain
Collect operational statistics from devices
- Physical network statistics
- Come from modems, multiplexers, and circuits linking hardware devices
- Logical network information:
- Come from performance measurement systems
- User response times, traffic volume on a specific circuit, the destinations of network packets, and other indices showing the network’s service level