Reference Guide
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Simple Network Management Protocol (SNMP)
Simple network management protocol (SNMP) is supported on the S4820T platform.
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 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.
• FTOS 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.
• FTOS supports up to 16 trap receivers.
• FTOS 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
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