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7-2

Cisco AS5x00 Case Study for Basic IP Modem Services

11/24/1999

Section 7 Enabling Management Protocols: NTP, SNMP, and Syslog

Understanding Network Management Basics

Figure 7-1 shows a logical view of how management protocols interact between the Cisco IOS (client)

and the network element management server. The dashed lines indicated different protocols and

functions.



NTP synchronizes time between network devices.



The SNMP element manager (EM) receives SNMP traps from the Cisco IOS. A unidirectional,

unsolicited SNMP datagram. The SNMP manager uses SNMP to query variables and set

configurations.



The Cisco IOS sends logging messages to a syslog daemon.

Figure 7-1 NTP, SNMP, and Syslog Interactions

Table 7-1 provides the RFCs and URLs for the management protocols described in this section:

NTP

synchronization

Cisco IOS

Element

manager

Syslog

SNMP

24527

Table 7-1 Management Protocol RFCs

Management

Protocol RFC URL

SNMP RFC 1157 http://www.ietf.org/rfc/rfc1157.txt

NTP RFC 1305 http://www.ietf.org/rfc/rfc1305.txt

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