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Simple Network Management Protocol (SNMP) provides a method for managing network devices. Devices supporting SNMP run a local software (agent). The
SNMP agents maintain a list of variables, used to manage the device. The variables are defined in the Management Information Base (MIB). The MIB presents
the variables controlled by the agent. The SNMP agent defines the MIB specification format, as well as the format used to access the information over the
network. Access rights to the SNMP agents are controlled by access strings and SNMP community strings.
The device is SNMP-compliant. It contains an SNMP agent that supports a set of standard and private MIB variables. Developers of management stations
require the exact structure of the MIB tree and receive the complete private MIBs information before being able to manage the MIBs.
All parameters are manageable from any SNMP management platform, except the SNMP management station IP address and community (community name and
access rights). The SNMP management access to the device is disabled if no community strings exist. The device is delivered with no community strings
configured.
The following screen displays the default device configuration:
console# enable
console# show snmp
Community-String Community-Access IP address
-------------------- ---------------- ---------------
Traps are enabled.
Authentication-failure trap is enabled.
The community-string, community-access and IP address can be set during the initial configuration procedure through the local terminal.
The SNMP configuration options are:
Community string
l
Access rights options: ro (read only), rw (read-and-write) or su (super).
l
An option to configure IP address or not: if IP address is not configured, it means that all community members having the same community name are
l
granted the same access rights.
The accepted practice is to use two community strings for the device - one (public community) with read only access and the other (private community) with
read-and-write access:
Public — Allow authorized management stations to retrieve MIB objects.
l
Private —Allow authorized management stations to retrieve and modify MIB objects.
l
During initial configuration, it is recommended to configure the device according to the network administrator requirements, in accordance with using an SNMP-
based management station.
To configure SNMP station IP address and community string(s):
1. At the console prompt, type Enable. The prompt is displayed as #.
2. Type configure and press <Enter>.
3. In the configuration mode, type the SNMP configuration command with the parameters including community name (private), community access right
(read and write) and IP address, as shown in the example below:
console> enable
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