D-Link DSL-G604T manual Snmp Manager, Management Admin User, User Account Management

DGS-3024 Gigabit Ethernet Switch Manual

Management		Admin	User
Configuration		Yes	Read Only
Network Monitoring		Yes	Read Only
Community Strings and Trap		Yes	Read Only
Stations
Update Firmware and Configuration		Yes	No
Files
System Utilities		Yes	No
Factory Reset		Yes	No
User Account Management
Add/Update/Delete User Accounts		Yes	No
View User Accounts		Yes	No
	Table 9- 1. Admin and User Privileges

After establishing a User Account with Admin-level privileges, be sure to save the changes by opening the Maintenance folder, opening the Save Configuration window and clicking the Save Configuration button.

SNMP Manager

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-3204 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.

SNMPv3 uses a more sophisticated authentication process that is separated into two parts. The first part is to maintain a list of users and their attributes that are allowed to act as SNMP managers. The second part describes what each user on that list can do as an SNMP manager.

The Switch allows groups of users to be listed and configured with a shared set of privileges. The SNMP version may also be set for a listed group of SNMP managers. Thus, you may create a group of SNMP managers that are allowed to view read-only information or receive traps using SNMPv1 while assigning a higher level of security to another group, granting read/write privileges using SNMPv3.

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