D-Link DES-3326SR [31/240] Installing the switch without the rack

D-Link DES-3326SR Layer 3 Switch

allowed to view read-only information or receive traps using SNMP v.1 while assigning a higher level of

security to another group, granting read/write privileges using SNMP v.3.

Using SNMP v.3 individual users or groups of SNMP managers can be allowed to perform or be restricted from

performing specific SNMP management functions. The functions allowed or restricted are defined using the

Object Identifier (OID) associated with a specific MIB. An additional layer of security is available for SNMP v.3

in that SNMP messages may be encrypted. To read more about how to configure SNMP v.3 settings for the

Switch read the next section, Management.

Traps

Traps are messages that alert network personnel of events that occur on the Switch. The events can be as serious

as a reboot (someone accidentally turned OFF the Switch), or less serious like a port status change. The Switch

generates traps and sends them to the trap recipient (or network manager). Typical traps include trap messages

for Authentication Failure or Topology Change.

MIBs

Management and counter information are stored by the Switch in the Management Information Base (MIB). The

Switch uses the standard MIB-II Management Information Base module. Consequently, values for MIB objects

can be retrieved from any SNMP-based network management software. In addition to the standard MIB-II, the

Switch also supports its own proprietary enterprise MIB as an extended Management Information Base. The

proprietary MIB may also be retrieved by specifying the MIB Object Identifier. MIB values can be either read-

only or read-write.

Installing the Switch without the Rack

The Switch is supplied with rubber feet for stationing it on a flat surface and mounting brackets and screws for

mounting the Switch in a rack. If you intend to use a stacked Switch arrangement, place the Master unit in the

top position so that it may be easily identified.

1. Install the Switch on a level surface that can safely support the weight of the Switch and its attached

cables. The Switch must have adequate space for ventilation and for accessing cable connectors.

2. Set the Switch on a flat surface and check for proper ventilation. Allow at least 5 cm (2 inches) on each

side of the Switch and 15 cm (6 inches) at the back for the power cable.

3. Attach the rubber feet on the marked locations on the bottom of the chassis.

4. The rubber feet, although optional, are recommended to keep the unit from slipping.

Figure 2-4. Install rubber feet for installations with or without a rack