KTI Networks KSD-800M manual Vlan Function, Vlan Operation

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3.2 VLAN Function

The switch supports port-based VLAN, 802.1Q Tag Aware VLAN and eight VLAN groups. Some VLAN related terminologies are described as follows:

VLAN Group

VLAN group specifies a VLAN information that can be referred by the switch in performing VLAN mapping and packet forwarding for ingress port and the received packets. The information includes:

•Group Number : index number of the VLAN group ( 1 ~ 8 )

•VID (VLAN ID) : 12-bit value to indicate a VLAN to which the group is associated (1 ~ 4095)

•Member Ports : the ports belong to this VLAN group for egress

Ingress Port

Ingress port is the input port on which a packet is received.

Default VLAN Group Index (Port VLAN index)

Each port has this index, which points to a default VLAN group. It is used for mapping a VLAN group for the ingress port under Port-based VLAN mode. It is also used for mapping to a VLAN group for an untagged received packet under 802.1Q Tag Aware VLAN mode.

PVID (Port VID)

PVID is the default VID of an ingress port. It is obtained from the VID of the indexed default VLAN group by the ingress port. It is often used in ingress packet filtering and egress tagging operation.

Egress Port

Egress port is the output port from which a packet is sent out after VLAN operation.

Null VID Packet

A tagged packet is called Null VID packet if the packet’s VID is equal to 0. Sometimes, it is also called priority tag packet.

3.2.1 VLAN Operation

The following figure illustrates the basic VLAN operation flow beginning from a packet received on an ingress port until it is transmitted from an egress port.

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Contents KSD-800M Installation GuidePage Trademarks Table of Contents Snmp Management Model series 10/100TX TP Ports 100FX fiber ports IntroductionPlug and Play Auto Copper/Fiber ConnectionsDesigned for Industrial Applications FeaturesBasic functions Management functionsProduct Panels Network Ports Front PanelFunction LED IndicatorsTop Panel Specifications10/100TX Twisted Pair Ports Switch FunctionsLED Indicators Software Management Functions Port Configuration Control FunctionVlan Function QoS FunctionModel Definitions DC Power InputMechanical EnvironmentalOptical Specifications Unpacking InstallationSafety Cautions DIN-Rail Mounting Panel Mounting Page Using Terminal Blocks Applying PowerUsing DC Power Jack Power Failure Relay OutputMaking UTP Connections Reset ButtonMaking Fiber Connections Far End Fault FunctionFunction State Interpretation LED IndicationConfiguring User Name and Password Configuring IP Address for the SwitchConfiguring Snmp Settings Configuring Port 7 and PortAdvanced Functions Egress Service PolicyQoS Function Priority Level3.2 802.1p Classification per port setting Port-based Priority Setting per port settingDscp Classification per port setting User Defined Dscpa Classification GlobalIP Network Address Classification Other QoS SettingsUser Defined IPA Classification Global User Defined IPB Classification GlobalVlan Operation Vlan FunctionIngress Member Filtering global setting 2.1 802.1Q Tag Aware Vlan Mode global settingUnmatched VID Filtering per port setting Ingress RulesVlan Group Mapping Egress Tag Rule per port settingPacket Forwarding under Vlan Egress Tagging RulesSummary of Vlan Function Null VID Replacement per port settingMain Menu Software ManagementTelnet Management Interface IP Menu IP Settings DescriptionSnmp Menu Snmp Settings DescriptionStatus Description Port ConfigPort Setting Description AdministratorAdministrator Vlan Settings Vlan ID Vlan Information DescriptionInput Description Vlan Global Settings DescriptionVID Setting Description Tagging with ingress Pvid for all packets Per Port Settings DescriptionAdministrator QoS Settings Select 1 Show QoS Other Status to view other settings global QoS Other Settings Description Security Manager Restore Default ValuesReboot System Update FirmwareSetting Description ExitStart Browser Software and Making Connection Login to the Switch UnitWeb Management Page Port Status Description Port Status MenuMenu Function Basic MenuSnmp Entries IP Address IP Address Setting DescriptionSystem Settings Description Community Settings Description Port Controls Trap Manager Settings DescriptionPort Settings Description Vlan Controls Ingress Rules Global Settings DescriptionVlan Group Configuration Group Settings Description Per Port Settings Insertion for untagged packets only is selected Egress RulesQoS Controls QoS Per Port Settings DescriptionQoS Global Settings Description IPA address and IPA subnet mask specify IPA user defined Image Refresh Time Settings DescriptionRestore Default MIB Objects Snmp ManagementSnmp Traps ObjectsAppendix. Factory Default Settings QoS Settings