Users Guide

55
Simple Network Management Protocol (SNMP)
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).
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 identiers to address managed objects, but managed objects also have a textual
name called an object descriptor.
Implementation Information
The following describes SNMP implementation information.
• Dell Networking OS supports SNMP version 1 as dened by RFC 1155, 1157, and 1212, SNMP version 2c as dened by RFC 1901,
and SNMP version 3 as dened by RFC 2571.
• Dell Networking OS supports up to 16 trap receivers.
• Dell Networking OS implementation of the sFlow MIB supports sFlow conguration 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.
Conguration Task List for SNMP
Conguring SNMP version 1 or version 2 requires a single step.
NOTE: The congurations 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
congurations use SNMP version 2c.
• Creating a Community
Conguring SNMP version 3 requires conguring SNMP users in one of three methods. Refer to Setting Up User-Based Security
(SNMPv3).
Related Conguration Tasks
• Managing Overload on Startup
• Reading Managed Object Values
• Writing Managed Object Values
• Subscribing to Managed Object Value Updates using SNMP
• Copy Conguration Files Using SNMP
• Manage VLANs using SNMP
Simple Network Management Protocol (SNMP)
801