Specifications

SNMP Settings Folder
Extreme Networks EAS 100-24t Switch Software Manual
39
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 the SNMP versions 1, 2c, and 3. Choose which version 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.
Using SNMPv3 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 SNMPv3 in that SNMP messages may be encrypted. To read more about how to
configure SNMPv3 settings for the Switch read the next section.
Tr ap s
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, and Topology Change.
The Switch incorporates a flexible SNMP management for the switching environment. SNMP
management can be customized to suit the needs of the networks and the preferences of the network
administrator.
The Switch supports the Simple Network Management Protocol (SNMP) versions 1, 2c, and 3. The
administrator can specify the SNMP version used 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.
SNMP View Table
This window is used to assign views to community strings or SNMP groups that define which MIB
objects can be accessed by a remote SNMP manager.