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Basic Dial NMS Implementation Guide
Task 4Using Syslog, NTP, and Modem Call
Records to Isolate and Troubleshoot Faults
About Syslog
Syslog, Network Time Protocol (NTP), and modem call records work together to isolate and
troubleshoot faults in a dial access network.
Syslog enables you to:
Centrally log and analyze configuration events and system error messages, such as router
configuration changes, interface up and down status, modem events, security alerts, environmental
conditions, trace backs, and CPU process overloads.
Capture client debug output sessions in a real-time scenario.
Reserve telnet sessions for making configurations changes and using
show
commands.
Telnet sessions that are cluttered with debug output interfere with troubleshooting procedures.
Reduce network downtime by knowing when the network has quality problems.
Figure 16 Cisco IOS Sending Syslog Messages to a Syslog Server
You can enable syslog in any Cisco IOS device and send syslog messages to many different destinations
(host, buffer, console, history, and monitor).
Cisco IOS
Syslog server
Syslog messages
Internal view
24528
Syslog messages
written to
hard disk