Reference Guide

Simple Network Management Protocol
(SNMP)
The Simple Network Management Protocol (SNMP) is designed to manage devices on IP networks by monitoring device
operation, which might require administrator intervention.
NOTE: On Dell Networking routers, standard and private SNMP management information bases (MIBs) are supported,
including all Get and a limited number of Set operations (such as set vlan and copy cmd).
Topics:
• Protocol Overview
• Implementation Information
• Configuration Task List for SNMP
• Important Points to Remember
• Set up SNMP
• Reading Managed Object Values
• Writing Managed Object Values
• Configuring Contact and Location Information using SNMP
• Subscribing to Managed Object Value Updates using SNMP
• Enabling a Subset of SNMP Traps
• Copy Configuration Files Using SNMP
• MIB Support to Display the Available Memory Size on Flash
• MIB Support to Display the Software Core Files Generated by the System
• Manage VLANs using SNMP
• Managing Overload on Startup
• Enabling and Disabling a Port using SNMP
• Fetch Dynamic MAC Entries using SNMP
• Deriving Interface Indices
• Monitor Port-Channels
• Troubleshooting SNMP Operation
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.
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