User manual

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Protected Port
There are two protected port groups. Ports in different groups can't
communicate each other.
In the same group, protected ports can't communicate each other, but can
communicate with unprotected ports. Unprotected ports can communicate with
any ports, including protected ports. In default, all ports are in Group1 and not
protected.
3.2.2.5. SNMP Configuration
Any Network Management platform running the Simple Network Management
Protocol (SNMP) can manage the switch; The SNMP is a Protocol that
governs the transfer of information between management station and agent.
NMS manages an SNMP-enabled network. It uses SNMP to manage and
monitor the network devices in the network. NMS can be a server that
manages the network or an application performing management function on a
device. NMS can send a request to an agent to query or modify one or more
variables. At the same time, NMS can receive traps sent by the agent to obtain
the status of the managed device. Currently, SNMP includes three versions:
SNMPv1, SNMPv2c and SNMPv3.
SNMPv1
SNMPv1 is the first version of the SNMP protocol, providing a minimum
network management function. The Structure of Management Information
(SMI) and MIB of SNMPv1 are rather simple and have many security defects.
SNMPv1 uses community name for authentication. A community name plays a
similar role as a password and can be used to control access from NMS to