24-Port Fast Ethernet Switch Management Guide

B ASIC C ONFIGURATION
2-11
entire MIB tree. However, you may assign new views to version 1 or 2c
community strings that suit your specific security requirements (see
page 3-67).
Community Strings (for SNMP version 1 and 2c clients)
Community strings are used to control management access to SNMP
version 1 and 2c stations, as well as to authorize SNMP stations to receive
trap messages from the switch. You therefore need to assign community
strings to specified users, and set the access level.
The default strings are:
• public - Specifies read-only access. Authorized management stations
are only able to retrieve MIB objects.
• private - Specifies read-write access. Authorized management stations
are able to both retrieve and modify MIB objects.
To prevent unauthorized access to the switch from SNMP version 1 or 2c
clients, it is recommended that you change the default community strings.
To configure a community string, complete the following steps:
1. From the Privileged Exec level global configuration mode prompt,
type “snmp-server community string mode,” where “string” is the
community access string and “mode” is rw (read/write) or ro (read
only). Press <Enter>. (Note that the default mode is read only.)
2. To remove an existing string, simply type “no snmp-server community
string,” where “string” is the community access string to remove. Press
<Enter>.
Note: If you do not intend to support access to SNMP version 1 and 2c
clients, we recommend that you delete both of the default
Console(config)#snmp-server community admin rw
Console(config)#snmp-server community private
Console(config)#