Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 876

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 • Manage VLANs Using SNMP • Enabling and Disabling a Port using SNMP • Fetch Dynamic MAC Entries using SNMP • Deriving Interface Indices • Monitor Port-channels Important Points to Remember • Typically, 5-second timeout and 3-second retry values on an SNMP server are sufficient for both LAN and WAN applications. If you experience a timeout with these values, increase the timeout value to greater than 3 seconds, and increase the retry value to greater than 2 seconds on your SNMP server. • User ACLs override group ACLs. Set up SNMP The Dell Networking OS supports SNMP version 1 and version 2 that are community-based security models. The primary difference between the two versions is that version 2 supports two additional protocol operations (informs operation and snmpgetbulk query) and one additional object (counter64 object). Simple Network Management Protocol (SNMP) 876