Moxa Technologies user manual Sample Applications of VLANs using PT-7728

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PT-7728 User’s Manual

Featured Functions

VLANs: Tagged and Untagged Membership

The PT-7728 supports 802.1Q VLAN tagging, a system that allows traffic for multiple VLANs to be carried on a single physical (backbone, trunk) link. When setting up VLANs you need to understand when to use untagged and tagged membership of VLANs. Simply put, if a port is on a single VLAN it can be an untagged member, but if the port needs to be a member of multiple VLANs, tagged membership must be defined.

A typical host (e.g., clients) will be untagged members of one VLAN, defined as Access Port in PT-7728, while inter-switch connections will be tagged members of all VLANs, defined as Trunk Port in PT-7728.

The IEEE Std 802.1Q-1998 defines how VLANs operate within an open packet-switched network. An 802.1Q compliant packet carries additional information that allows a switch to determine which VLAN the port belongs to. If a frame is carrying the additional information, it is known as a tagged frame.

To carry multiple VLANs across a single physical (backbone, trunk) link, each packet must be tagged with a VLAN identifier so that the switches can identify which packets belong in which VLAN. To communicate between VLANs, a router must be used.

The PT-7728 supports two types of VLAN port settings:

yAccess Port: The port connects to a single device that is not tagged. The user must define the default port PVID that assigns which VLAN the device belongs to. Once the ingress packet of this Access Port egresses to another Trunk Port (the port nePT all packets to carry tag information), PT-7728 will insert this PVID into this packet to help the next 802.1Q VLAN switch recognize it.

yTrunk Port: The port connects to a LAN that consists of untagged devices/tagged devices and/or switches and hubs. In general, the traffic of the Trunk Port must have a Tag. Users can also assign PVID to a Trunk Port. The untagged packet on the Trunk Port will be assigned the port default PVID as its VID.

The following section illustrates how to use these ports to set up different applications.

Sample Applications of VLANs using PT-7728

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Contents First Edition, February Moxa Inc Moxa PowerTrans Switch PT-7728 User’s ManualTrademarks Copyright NoticeDisclaimer Table of Contents Appendix a MIB Groups Appendix B Specifications Introduction ‰ Overview ‰ Package Checklist ‰ Software FeaturesSoftware Features Package ChecklistOverview Getting Started Serial Console Configuration 115200, None, 8, 1, VT100 PT-7728 User’s Manual Getting Started Key Function Configuration by Telnet ConsolePT-7728 User’s Manual Getting Started PT-7728 User’s Manual Getting Started Configuration by Web Browser Disabling Telnet and Browser Access Featured Functions System Identification Configuring Basic SettingsPassword PasswordAccount Hosts That Need Access Input Format Accessible IPGrant access to one host with a specific IP address Grant access to any host on a specific subnetworkName EnablePort DescriptionSpeed NetworkFDX Flow Ctrl Default Gateway Auto IP ConfigurationSwitch IP Address Switch Subnet MaskCurrent Date TimeDaylight Saving Time Current TimeSystem File Update-By Remote Tftp Log Files Path and Name Configuration Files Path and NameTftp Server IP/Name Firmware Files Path and NameFactory Default System File Update-By Local Import/ExportPort Trunking Concept Using Port TrunkingAvailable Ports/Member Ports Configuring Port TrunkingTrunk Group Maximum of 4 trunk groups Trunk TypeSetting Description Configuring SnmpTrunk Table V1, V2c Write/Read Community Snmp Read/Write SettingsSnmp Versions V1, V2c Read Community1st Trap Server IP/Name Setting Description Factory Default Setting Description Factory DefaultPrivate MIB information Using Communication RedundancyTurbo Ring Concept Initial setup for Turbo Ring or Turbo RingTurbo Ring with odd number switches Determining the Redundant Path for Turbo Ring Ring Coupling ConfigurationSwitch B Dual-Homing Configuration for Turbo Ring Configuring Turbo Ring and Turbo RingConfiguring Turbo Ring Set as Master Now ActiveMaster/Slave Redundancy ProtocolCoupling Port Enable Ring CouplingCoupling Control Port Coupling-Mode Enable RingRing 1/2-Status Ring 1/2-1st Ring Port Status Ring 1/2-2nd Ring Port StatusPrimary/Backup Port Coupling ModeSTP/RSTP Concept What is STP?PT-7728 User’s Manual Featured Functions Port Speed Path Cost 802.1D Edition 802.1w-2001 STP ConfigurationHow STP Works STP RequirementsDifferences between Rstp and STP STP ReconfigurationSTP Example Using STP on a Network with Multiple VLANs Bridge Priority Configuring STP/RSTPRoot/Not Root Protocol of RedundancyMax. Age sec Forwarding DelayEnable STP per Port Hello Time secTraffic Prioritization Concept Using Traffic PrioritizationConfiguration Limits of RSTP/STP What is Traffic Prioritization?Ieee 802.1p Priority Level Ieee 802.1D Traffic Type How Traffic Prioritization WorksTraffic Prioritization Differentiated Services DiffServ Traffic MarkingTraffic Queues Inspect TOS Configuring Traffic PrioritizationQoS Classification Queuing MechanismInspect COS Setting Description FactoryCoS Mapping TOS/DiffServ MappingWhat is a VLAN? Using Virtual LANVirtual LAN Vlan Concept Communication Between VLANs VLANs and the PowerTransBenefits of VLANs Managing a VlanVLANs Tagged and Untagged Membership Sample Applications of VLANs using PT-7728PT-7728 User’s Manual Featured Functions Port Type Configuring Virtual LANVlan Settings Management Vlan IDVlan Table Using Multicast FilteringWhat is an IP Multicast? Concept of Multicast FilteringMulticast Filtering Benefits of MulticastNetwork without multicast filtering Network with multicast filtering Multicast Filtering and Moxa PowerTrans SwitchIgmp Internet Group Management Protocol Snooping Mode Query ModeStatic Multicast MAC Configuring Igmp SnoopingIgmp Multicast Filtering Gmrp Garp Multicast Registration ProtocolIgmp Snooping Settings Add Static Multicast MAC Gmrp Table Using Bandwidth ManagementConfiguring Gmrp Gmrp enableTraffic Rate Limiting Settings Configuring Bandwidth Management Broadcast Storm ProtectionIngress Ieee Using Port Access ControlConfiguring Static Port Lock Static Port LockServer Port Configuring IeeeDatabase Option Radius ServerLocal User Database Setup 802.1X Re-AuthenticationPort Access Control Table Using Auto WarningLocal User Database Setup Event Type Configuring Email WarningMail Server IP/Name Email SetupMoxaPowerTransSwitch0001@SwitchLocation Port EventsEmail Address Configuring Relay WarningPassword Setting Account NameEvent Setup Override relay alarm settings Using Line-Swap-Fast-RecoveryUsing Set Device IP Configuring Line-Swap Fast RecoverySet up the connected devices Configuring Set Device IPMirror Port Using DiagnosisMonitor by Switch Using MonitorPing Monitor by Port Using the MAC Address TableMAC Using Event LogSyslog Server Using SyslogPT-7728 User’s Manual Featured Functions MIB II.5 Icmp Group MIB II.1 System GroupMIB II.2 Interfaces Group MIB II.4 IP GroupMIB II.11 Snmp Group MIB II.10 Transmission GroupMIB II.17 dot1dBridge Group Private Traps Public TrapsTechnology Switch PropertiesInterface Optical Fiber 100BaseFX PowerMechanical WarrantyEnvironmental