User Manual

15
Simple Network Management Protocol
(SNMP)
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.
NOTE: An I/O Aggregator supports standard and private SNMP MIBs, including Get operations in
supported MIBs.
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.
Configuring the Simple Network Management Protocol
NOTE: The configurations in this chapter use a UNIX environment with net-snmp version 5.4. This is
only one of many RFC-compliant SNMP utilities you can use to manage the Aggregator using
SNMP. Also, these configurations use SNMP version 2c.
Configuring SNMP version 1 or version 2 requires only a single step:
1. Create a community.
NOTE: IOA supports only Read-only mode.
Important Points to Remember
• Typically, 5-second timeout and 3-second retry values on an SNMP server are sufficient for both local
area network (LAN) and wide area network (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.
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Simple Network Management Protocol (SNMP)