Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 1042

Protocol Overview Network management stations use SNMP to retrieve or alter management data from network elements. A datum of management information is called a managed object; the value of a managed object can be static or variable. Network elements store managed objects in a database called a management information base (MIB). MIBs are hierarchically structured and use object identifiers to address managed objects, but managed objects also have a textual name called an object descriptor. Implementation Information The following describes SNMP implementation information. • The Dell Networking OS supports SNMP version 1 as defined by RFC 1155, 1157, and 1212, SNMP version 2c as defined by RFC 1901, and SNMP version 3 as defined by RFC 2571. • The system supports up to 16 trap receivers. • The Dell Networking OS implementation of the sFlow MIB supports sFlow configuration via SNMP sets. • SNMP traps for the spanning tree protocol (STP) and multiple spanning tree protocol (MSTP) state changes are based on BRIDGE MIB (RFC 1483) for STP and IEEE 802.1 draft ruzin-mstp-mib-02 for MSTP. Configuration Task List for SNMP Configuring SNMP version 1 or version 2 requires a single step. NOTE: The configurations in this chapter use a UNIX environment with net-snmp version 5.4. This environment is only one of many RFC-compliant SNMP utilities you can use to manage your Dell Networking system using SNMP. Also, these configurations use SNMP version 2c. • Creating a Community Configuring SNMP version 3 requires configuring SNMP users in one of three methods. Refer to Setting Up User-Based Security (SNMPv3). Related Configuration Tasks • Managing Overload on Startup • Reading Managed Object Values • Writing Managed Object Values • Subscribing to Managed Object Value Updates using SNMP • Copying Configuration Files via SNMP Simple Network Management Protocol (SNMP) 1042