R28 Door Phone Administrator Guide
hierarchies, which are described by Management Information Bases (MIBs). To do the
configuration on the web Network > Advanced > SNMP interface.
Parameter Set-up:
•
Active: to enable or disable the SNMP feature.
•
Port: to configure the SNMP server’s port.
•
Trusted IP: to configure allowed SNMP server address. It could be an IP address or
any valid URL domain name.
9.7
VLAN Setting
A virtual Local Area Network is a logical grouping of two or more nodes that are not
necessarily on the same physical network segment but which share the same logical IP
domain. To be specific, the purpose of VLAN is to separate the layer 2 broadcast domain.
Within trunk links, the tagged packet will only be sent to those ports with the same VLAN
ID. This is usually achieved by a switch or router. Users can benefit from deployed VLAN,
such as *Security: if without VLAN, all hosts will be included in the unique broadcast
domain. Therefore, the consequence of an ARP attack will affect all end devices in the
organization. *Performance: The nature of network broadcast is to flood frames among
the network. In certain conditions, it is unnecessary to receive the broadcast frame. To
save bandwidth for high efficiency, it will be better to separate the broadcast domain by
deploying VLAN. To do the configuration on the web Network > Advanced > VLAN
interface.
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