Enterasys Networks VH-2402S Vlan Configuration, Assigning Ports to VLANs, Vlan Classification

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VH-2402S VLAN Configuration

VLAN operation on the VH-2402S is enabled by default. Therefore, all frames are transferred internally through the switch with a VLAN tag. This tag may already be on the frame entering the switch, or added to the frame by the switch. VLAN information already existing on frames entering the switch is automatically handled by the switch. The VH-2402S learns VLAN information from tagged frames and appropriately switches frames out the proper ports based on this information. The configuration of VLANs for frames entering the switch without tags must be made by the user of the switch. This configuration can be made either through the console interface or via SNMP.

Assigning Ports to VLANs

Before enabling VLANs for the switch, you must first assign each port to the VLAN groups it will participate in. By default all ports are assigned to VLAN 1 as untagged ports. You should add a port as a tagged port (that is, a port attached to a VLAN-aware device) if you want it to carry traffic for one or more VLANs and the device at the other end of the link also supports VLANs. Then assign the port at the other end of the link to the same VLANs. However, if you want a port on this switch to participate in one or more VLANs, but the device at the other end of the link does not support VLANs, then you must add this port as an untagged port (that is, a port attached to a VLAN-unaware device).

Port-based VLANs are tied to specific ports. The switch’s forwarding decision is based on the destination MAC address and its associated port. Therefore, to make valid forwarding and flooding decisions, the switch learns the relationship of the MAC address to its related port—and thus to the VLAN—at run-time.

VLAN Classification

When the switch receives a frame, it classifies the frame in one of two ways:

•If the frame is untagged, the switch assigns the frame to an associated VLAN based on the PVID of the receiving port.

•If the frame is tagged, the switch uses the tagged VLAN ID to identify the port broadcast domain of the frame.

Port Overlapping

Port overlapping can be used to allow access to commonly shared network resources among different VLAN groups, such as file servers or printers. Note that if you implement VLANs which do not overlap, but still need to communicate, you must connect them using a router or Layer 3 switch.

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Contents Fast Ethernet Switch Management GuidePage 9033645-01 9033645-01 Table of Contents Snmp Management Appendix A. Spanning Tree ConceptsIndex Vi Table of Contents VH-2402S Configuration Options Management OverviewRequired Connections Console Port Out-of-Band ConnectionsConfigure the Switch Site Configure the Remote SiteRemote Management via the Console Port In-Band ConnectionsIn-Band Network Connection Management Overview VH-2402S VH-2402S User Interface OverviewUser Access Factory Defaults Factory Default SettingsGvrp Main Menu Selection DescriptionDisplays/configures extended bridge capabilities provided by System Information Menu System Information MenuDisplaying System Information System InformationDisplaying Switch Version and Module Information Switch InformationManagement Setup Menu Management Setup MenuChanging the Network Configuration Network ConfigurationIP Configuration IP ConfigurationIP Connectivity Test Ping IP Connectivity TestHttp Configuration 10. Http ConfigurationConfiguring the Serial Port 11. Serial Port Configuration12. Snmp Configuration Assigning Snmp ParametersConfiguring Community Names 13. Snmp CommunitiesConfiguring IP Trap Managers 14. IP Trap ManagersConsole Login Configuration 15. Console Login ConfigurationUsing Tftp Protocol to Download Over the Network Downloading System SoftwareSaving the System Configuration Parameter DescriptionConfiguring Management Access 18. Management ConfigurationConfiguring the Switch 19. Device Control MenuNot implemented in the current firmware release Configuring Port Parameters 20. Port ConfigurationViewing the Current Port Configuration 21. Port InformationUsing the Spanning Tree Algorithm 22. Spanning Tree Configuration Configuring Bridge STADevice with the lowest MAC address will then Configuring STA for Ports or Modules 24. Spanning Tree Port ConfigurationViewing the Current Spanning Tree Configuration 25. Spanning Tree InformationDisplaying the Current Bridge STA 26. Bridge STA InformationDisplaying the Current STA for Ports or Modules 27. Spanning Tree Port InformationRules defining port status are Using a Mirror Port for Analysis 28. Mirror Port ConfigurationConfiguring Port Trunks 29. Port Trunking Configuration Igmp Multicast Filtering Configuring Igmp 30. Igmp ConfigurationConfiguring Broadcast Storm Control 31. Broadcast Storm Control ConfigurationConfiguring Bridge MIB Extensions 32. Extended Bridge ConfigurationBy setting this parameter to False Configuring Traffic Classes 33 .1P ConfigurationPort Priority Configuration 34 .1P Port Priority Configuration802.1P Port Traffic Class Information 35 .1P Port Traffic Class InformationConfiguring Virtual LANs 802.1Q Vlan Base Information802.1Q Vlan Current Table Information 37 .1Q Vlan Current Table Information802.1Q Vlan Static Table Configuration 38 .1Q Vlan Static Table Configuration39 .1Q Vlan Static Table Configuration Example Port Assignment Vlan Configuration 40. Port Assignment Vlan ConfigurationMulticast Router Port Information 41. Multicast Router Port InformationStatic Multicast Router Port Configuration 42. Static Multicast Router Port ConfigurationIgmp Member Port Configuration 43. Igmp Member Port ConfigurationPort Security Configuration 44. Port Security ConfigurationMonitoring the Switch 45. Network Monitor MenuDisplaying Port Statistics 46. Port StatisticsDisplaying Rmon Statistics 47. Rmon StatisticsDrop Events Displaying the Unicast Address Table 48. Unicast Address TableDisplaying the IP Multicast Registration Table 49. IP Multicast Registration TableConfiguring Static Unicast Addresses 50. Static Unicast Addreeess Table ConfigurationResetting the System Logging Off the System66 VH-2402S User Interface Configuring & Monitoring the Switch Common TasksSetting Password Protection Connecting via Telnet Checking Network Configuration StatusAssigning an IP Address Setting Snmp Management Access Viewing Switch StatisticsConfiguring Port Mirroring Downloading a Software UpgradeDownloading Via the Serial Port Downloading Via Tftp9033645-01 Configuring Spanning Tree Parameters Configuring VLANs Configuring Class of ServiceConfiguring Port Operation Configuring the Unicast Address Table Setting a Default Gateway Configuring BootPConfiguring Port Trunks Configuring & Monitoring the Switch VH-2402S Snmp Management Snmp ProtocolMIB Objects RFC 1213 MIB-II RFC 1573 Interfaces Evolution MIBRFC 1643 Ethernet-Like MIB RFC 1493 Bridge MIBIeee 802.1Q Q-MIB Compiling MIB Extensions Enterasys WebsiteEnterasys Proprietary MIB Extensions Appendix A. Spanning Tree Concepts Spanning Tree FeaturesGeneral Figure A-1. Spanning Tree Using VH-2402S Switches Spanning Tree Protocol in a NetworkTable A-1. Spanning Tree Protocol Defaults Spanning Tree Protocol ParametersSpanning Tree Protocol Operation 9033645-01 Spanning Tree Concepts VH-2402S Appendix B. Virtual Lans Vlans VLANs and Frame TaggingVH-2402S Vlan Configuration Assigning Ports to VLANsVlan Classification Port OverlappingForwarding Tagged/Untagged Frames Automatic Vlan RegistrationForwarding Traffic with Unknown Vlan Tags Appendix C. Class of Service Incoming tagged frames contain a priority level rangeFigure C-1. Class of Service Example Appendix D. IP Multicast Filtering Igmp Snooping and IP Multicast FilteringPage Index Tftp Page 150524-103 R02
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