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Cisco AS5800 Operations, Administration, Maintenance, and Provisioning Guide
DOC-7810814=
Chapter 4 Administration
Enabling Management Protocols: NTP, SNMP, and Syslog
Figure 4-1 NTP, SNMP, and Syslog Interactions
Table 4-2 provides the RFCs and URLs for the management protocols described in this section.
For more information about system management, refer to Cisco IOS Release 12.0 Configuration
Fundamentals Configuration Guide and Command Reference, available online at
http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/12cgcr/index.htm
Enabling the Network Time Protocol
The Network Time Protocol (NTP) provides a common time base for networked routers, servers, and
other devices. A synchronized time enables you to correlate syslog and Cisco IOS debug output to
specific events. For example, you can find call records for specific users within one millisecond.
Comparing logs from various networks is essential for:
• Troubleshooting
• Fault analysis
• Security incident tracking
Without precise time synchronization between all the various logging, management, and AAA functions,
time comparisons are not possible.
NTP
synchronization
Cisco IOS
Element
manager
Syslog
SNMP
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Table 4-2 Management Protocol RFCs
Management Protocol RFC URL
NTP RFC 1305 http://www.ietf.org/rfc/rfc1305.txt
SNMP RFC 1157 http://www.ietf.org/rfc/rfc1157.txt
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