Specifications

DGS-3212SR Stackable Gigabit Layer 2 Switch
Modify or delete an existing user account in the User Account Modify Table window. To delete the user account, click on
the Delete button. To change the password, type in the New Password and retype it in the Confirm New Password entry
field. Choose the level of privilege (Admin or User) from the Access Right drop-down menu.
Admin and User Privileges
There are two levels of user privileges: Admin and User. Some menu selections available to users with Admin privileges
may not be available to those with User privileges.
The following table summarizes the Admin and User privileges:
Management Admin User
Configuration
Yes Read Only
Network Monitoring
Yes Read Only
Community Strings and Trap Stations
Yes Read Only
Update Firmware and Configuration Files
Yes No
System Utilities
Yes No
Factory Reset
Yes No
User Account Management
Add/Update/Delete User Accounts
Yes No
View User Accounts
Yes No
Table 6- 1. Admin and User Privileges
After establishing a User Account with Admin-level privileges, be sure to save the changes (see below).
SNMP
SNMP Settings
Simple Network Management Protocol (SNMP) is an OSI Layer 7 (Application Layer) designed specifically for managing
and monitoring network devices. SNMP enables network management stations to read and modify the settings of
gateways, routers, switches, and other network devices. Use SNMP to configure system features for proper operation,
monitor performance and detect potential problems in the Switch, switch group or network.
Managed devices that support SNMP include software (referred to as an agent), which runs locally on the device. A
defined set of variables (managed objects) is maintained by the SNMP agent and used to manage the device. These objects
are defined in a Management Information Base (MIB), which provides a standard presentation of the information
controlled by the on-board SNMP agent. SNMP defines both the format of the MIB specifications and the protocol used to
access this information over the network.
The DGS-3212SR supports the SNMP versions 1, 2c, and 3. You can specify which version of the SNMP you want to use
to monitor and control the Switch. The three versions of SNMP vary in the level of security provided between the
management station and the network device.
In SNMP v.1 and v.2, user authentication is accomplished using 'community strings', which function like passwords. The
remote user SNMP application and the Switch SNMP must use the same community string. SNMP packets from any
station that has not been authenticated are ignored (dropped).
The default community strings for the Switch used for SNMP v.1 and v.2 management access are:
public - Allows authorized management stations to retrieve MIB objects.
private - Allows authorized management stations to retrieve and modify MIB objects.
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