Cisco WS-C4003 Software Guide - Page 303

Configuring SNMP 23 C H A P T E R This chapter describes how to configure Simple Network Management Protocol (SNMP) on Catalyst enterprise LAN switches. Note For complete syntax and usage information for the commands used in this chapter, refer to the Command Reference-Catalyst 4000 Family, Catalyst 2948G, and Catalyst 2980G Switches. This chapter consists of these sections: • SNMP Terminology, page 23-1 • Understanding How SNMP Works, page 23-3 • Understanding How SNMPv1 and SNMPv2c Work, page 23-4 • SNMPv1 and SNMPv2c Default Configuration, page 23-5 • Configuring SNMPv1 and SNMPv2c from an NMS, page 23-5 • Configuring SNMPv1 and SNMPv2c from the CLI, page 23-6 • Understanding SNMPv3, page 23-7 • Configuring SNMPv3 from an NMS, page 23-10 • Configuring SNMPv3 from the CLI, page 23-10 • Using CiscoWorks2000, page 23-13 SNMP Terminology The following is a list of SNMP terminology used in this chapter. authentication-The process of ensuring message integrity and protection against message replays, including data integrity and data origin authentication. authoritative SNMP engine-One of the SNMP copies used in network communication is designated the allowed SNMP engine which protects against message replay, delay, and redirection. The security keys used for authenticating and encrypting SNMPv3 packets are generated as a function of the authoritative SNMP engine's engine ID and user passwords. When an SNMP message expects a response (for example, get exact, get next, set request), the receiver of these messages is authoritative. When an SNMP message does not expect a response, the sender is authoritative. community string-A text string used to authenticate messages between a management station and an SNMPv1 or SNMPv2c engine. 78-12647-02 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 23-1