Snmp Settings - D-Link DGS-1210/ME Series Hardware Installation Manual

DGS-1210/ME series Metro Ethernet Switch Hardware Installation Guide
The IP address may be set using the Command Line Interface (CLI) over the console serial port as follows:
Starting at the command line prompt, enter the commands config ipif System ipaddress
xxx.xxx.xxx.xxx/yyy.yyy.yyy.yyy
Where the x's represent the IP address to be assigned to the IP interface named System and the y's
represent the corresponding subnet mask.
Alternatively, you can enter config ipif System ipaddress xxx.xxx.xxx.xxx/z. Where the x's represent the IP
address to be assigned to the IP interface named System and the z represents the corresponding number of
subnets in CIDR notation.
The IP interface named System on the Switch can be assigned an IP address and subnet mask, and then be
used to connect a management station to the Switch's Telnet or Web-based management agent.
DGS-1210-28MP/ME:5# config ipif System ipaddress 10.90.90.91/255.0.0.0
Command: config ipif System ipaddress 10.90.90.91/255.0.0.0
Success.
DGS-1210-28MP/ME:5#
In the above example, the Switch was assigned an IP address of 10.90.90.91 with a subnet mask of
255.0.0.0. (the CIDR form was used to set the address (10.90.90.91/8). The system message Success
indicates that the command was executed successfully. The Switch can now be configured and managed via
Telnet and the CLI or via the Web-based management.

SNMP Settings

Each Switch must be assigned its own IP Address, which is used for communication with an SNMP network
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 Switch supports SNMP versions 1, 2c, and 3. The administrator may specify which SNMP version to use
to monitor and control the Switch. The three SNMP versions vary in the level of security provided between
the management station and the network device.
In SNMP v1 and v2, 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 v1 and v2 management access are:
• public - Allows authorized management stations to retrieve MIB objects.
• private - Allows authorized management stations to retrieve and modify MIB objects.
SNMP v3 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
Figure 3.7 Assigning the Switch an IP address
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