Epson 3300 manual Snmp, Frame Tag Operation, Port Valn ID

Frame Tag Operation	Basically, the default settings for tagged or untagged VLAN
	will be shown automatically when you type VLAN ID/Name
	and check the Active box. By the way, you can modify the tag
	operation for each VLAN in this page for obtaining proper
	control. Use the drop down list to choose a tag operation for
	each port.
	Tagged – All the computers behind that port must support
	VLAN and are tagged with certain VLAN groups with specified
	ID numbers.
	Untagged - All the computers behind that port do not support
	VLAN feature.
	Note: It is recommended to group computers that do not
	support VLAN feature or support VLAN feature but their
	Untagged VLAN settings are checked in one port with untagged.
	This device will tag proper port VLAN ID for untagged PC
	respectively for making them communicating with the router.
Management Port	It can help users to communicate with router still even though
	configuring the wrong setting in the 802.1Q VLAN tag. The
	management port will lock index 4. We recommend that users
	enable the management port to fix the fourth VLAN settings
	unless users want to use the fourth VLAN and ensure the
	settings are correct. You have to set Port VLAN ID for P4
	previously before you check Management Port.
Port VALN ID	Type the ID for each port used for identification on VLAN.
	When the tag operation for each port (representing for different
	computers connected to this router) is marked by untagged, to
	avoid conflict occurred, the system will apply the ID listed in
	these boxes automatically for each port (P1 to P4) to ensure
	proper and correct network operation.

3.3.10 SNMP

The Simple Network Management Protocol (SNMP) is an application layer protocol that facilitates the exchange of management information between network devices. There is a set of protocols for managing complex networks. SNMP works by sending messages, called protocol data units (PDUs), to different parts of a network. SNMP enables network administrators to manage network performance, find and solve network problems, and plan for network growth.

A SNMP-managed network consists of three key components, managed devices, agents, and network-management systems (NMSs).

A managed device is a network node that contains an SNMP agent and that resides in a managed network. Managed devices collect and store management information and make this

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