Configuring Snmp; Disabling And Enabling Snmp - Cisco WS-C2955T-12 Software Manual

Configuring SNMP

Configuring SNMP
This software release supports these Simple Network Management Protocol (SNMP) versions:
•
•
You must configure the SNMP agent to use the version of SNMP supported by the management station.
An agent can communicate with multiple managers; for this reason, you can configure the software to
support communications with one management station using the SNMPv1 protocol and another using
the SNMPv2 protocol.
Both SNMPv1 and SNMPv2C use a community-based form of security. The community of managers
able to access the agent's Management Information Base (MIB) is defined by an IP address access
control list and password.
SNMPv2C includes a bulk retrieval mechanism and more detailed error message reporting to
management stations. The bulk retrieval mechanism retrieves tables and large quantities of information,
minimizing the number of round-trips required. The SNMPv2C improved error-handling includes
expanded error codes that distinguish different kinds of error conditions; these conditions are reported
through a single error code in SNMPv1. Error return codes now report the error type.
SNMPv2C replaces the Party-based Administrative and Security Framework of SNMPv2Classic with
the Community-based Administrative Framework of SNMPv2C while retaining the bulk retrieval and
improved error handling of SNMPv2Classic.
Note If your switch is part of a cluster, the clustering software can change SNMP parameters (such as host
names) when the cluster is created. If you are configuring a cluster for SNMP, see the
Community Strings" section on page

Disabling and Enabling SNMP

SNMP is enabled by default and must be enabled for Cluster Management features to work properly.
SNMP is always enabled for Catalyst 1900 and Catalyst 2820 switches.
For CLI procedures, refer to the Cisco IOS Release 12.0 documentation on Cisco.com for additional
information and CLI procedures.
Catalyst 2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide
6-48
SNMPv1—The Simple Network Management Protocol, a Full Internet Standard, defined in
RFC 1157.
SNMPv2C, which has these features:
– SNMPv2—Version 2 of the Simple Network Management Protocol, a Draft Internet Standard,
defined in RFCs 1902 through 1907.
SNMPv2C—The Community-based Administrative Framework for SNMPv2, an Experimental
–
Internet Protocol defined in RFC 1901.
5-16.
Chapter 6 Configuring the System
"SNMP
78-6511-08