Enterasys Networks manual ELS10-27TX Vlan Configuration, Vlan ID

Page 92

ELS10-27TX VLAN Configuration

If the ELS10-27TX is so configured, and, if the frame does not already contain a tag, a VLAN identifier is placed in a tag which is appended to frames as they are received by the switch. Within the switch and between switches compliant with IEEE 802.1Q, these identifiers are used to control the destination of all frames, preventing them from being flooded to all connected stations and interfaces. When frames are forwarded to destination end stations, the tag may or may not be stripped off, depending on the configuration of the switch port.

By using 802.1Q tagged VLANs, users from physically dispersed locations can be formed into groups by assigning them to specific VLANs. Broadcast, Unicast and multicast traffic for these specific VLANs can be directed across the network without being radiated out to stations that are not members of the same VLANs. Up to 32 different VLANs can be specified by the 802.1Q tag. This implementation is non-intrusive to end-station applications and the associated clients. Both tagged and non-tagged as defined can function properly in the environment.

A.2 ELS10-27TX VLAN CONFIGURATION

VLAN operation on the ELS10-27TX is disabled by default.You must configure all VLANs, prior to using them. When VLANs are enabled, all frames are transferred internally through the switch with a VLAN tag. This tag may already be on the frame entering the switch, or it may be added to the frame by the switch. VLAN information already existing on frames entering the switch is automatically handled by the switch. The ELS10-27TX uses VLAN information from tagged frames and appropriately switches frames out the proper ports based on this information. This configuration can be made either through the VLAN Menu in the console interface or via SNMP. The parameters used to configure VLANs on the ELS10-27TX are explained below.

If tag-unaware devices are to be supported, access ports and default VLAN IDs for the ports must be configured.

A.2.1 VLAN ID

The VLAN ID is used to uniquely identify different VLANs on a network. The VLAN ID information is contained in the 802.1Q tag header on a frame, and so identifies the VLAN to which a frame belongs. The ELS10-27TX recognizes VLAN IDs in the tags on frames entering the switch, and can also add tags with an appropriate VLAN ID to untagged frames.

A-2

Image 92

Contents SmartSTACK Ethernet ELS10-27TX Supplement Page Page FCC Notice Cabletron SYSTEMS, INC Program License Agreement Page Page Page Cabletron Systems Limited Program License Agreement Viii Page Declaration of Conformity Contents Configuring Vlans Using Snmp Vlan MIB ObjectsXiii Configuring Workgroups Using LCM Configuring Workgroups Using SnmpWorkgroup MIB Objects Appendix a Virtual Lans Vlans IndexAbout this Supplement Getting Help Your email addressDocument Conventions Related Documentation Document Title Part NumberUsing Vlans on the ELS10-27TX Product OverviewIeee 802.1Q Standard Vlan Access Ports 802.1Q Mode 802.1Q Mode on ELS10-27TXVlan Hybrid Ports 802.1Q Mode 3 802.1Q Trunk Ports Preserving PriorityAccessing Network Management Using VLANs Non-Preserving PriorityAssigning Ports to a Vlan Switch ModeDefault Port Vlan ID Restricting VLANs 802.1Q Mode Enable GvrpVirtual Workgroups will only operate in 802.1D mode WorkgroupsDefault Gateway Installation and ManagementPage Overview LCM ConventionsLCM Command Summary Subset of LCM CommandsLCM Command Syntax Basic LCM Commands HelpErase Exit or LogoutLCM Commands Enable Command Address LimitRoute Command Port Command Port CommandEnhancements to LCM Commands Switch Command Trap Control Command Vlan Command ELS10-27vlan add 5-9 bluePage Configuring Vlans Using Snmp Overview Config TableModifying a Vlan Modifying, Creating and Deleting VLANsStep Action Creating a Vlan Deleting a VlanConfig Egress List Modifying a Config Egress List Entry Filter Gvrp Table Modifying, Creating or Deleting a Filter Gvrp Table EntryCreating a Filter Deleting a FilterDeleting a Static MAC Entry Static MAC EntryCreating a Static MAC Entry Bridge Configuration Vlan Version NumberOperating Mode VlanOperatingMode Reset VlanResetGvrp Enable VlanGVRPEnable Syntax Octet String SizeAccess List VlanAccessList Vlan VlanConfigVlanVlanConfigEntry Configuration EntriesEntry VlanConfigEntry Index VlanConfigIndex VID VlanConfigVIDPorts VlanConfigPorts IP VlanConfigIPIP Mask VlanConfigIPMask Name VlanConfigNameStatus VlanConfigStatus Establish VlanConfigEstablishActive VlanNumActiveEntries Static Configured VlanNumConfiguredEntriesDevice Entries Configuration Table VlanConfigTable Maximum Number VlanMaxNumEntriesEgress Table Egress Table VlanConfigEgressTable Egress Entry VlanConfigEgressEntryVlanConfigEgressEntry Index VlanEgressIndexVID VlanEgressVID List VlanEgressListStatus VlanEgressStatus Entry VlanFilterGVRPEntry Filter GvrpGvrp VlanFilterGVRPTable VlanFilterGVRPIndex VlanFilterGVRPEntryVID VlanFilterGVRPVID List VlanFilterGVRPListStatus VlanFilterGVRPStatus EstablishVID VlanFilterGVRPEstablishVIDEntry VlanStaticEntry Static MAC Address EntriesTable VlanStaticTable VID VlanStaticVID VlanStaticEntryMAC VlanStaticMAC Port VlanStaticPortEstablish VlanStaticEstablish Page Chapter Configuring Workgroups Using LCM Overview Workgroup Configuration Examples Workgroup DefaultWorkgroup Superset LCM Workgroup Commands Workgroups are only valid in 802.1D modeELS10-27workgroup omega Page Chapter Configuring Workgroups Using Snmp Overview Workgroup Configuration Procedures Configuring Workgroups Using Snmp Page Next Number WorkGroupNextNumber Workgroups Using SnmpChapter Workgroup MIB Objects Overview Current Count WorkGroupCurrentCount MAX Count WorkGroupMaxCountTable WorkGroupTable Entry WorkGroupEntry Number WorkGroupNumber Name WorkGroupNamePorts WorkGroupPorts Type WorkGroupTypeAppendix a Virtual Lans Vlans Vlans and Frame Tagging Vlan Vlan YELS10-27TX Vlan Configuration Vlan IDVlan Egress Vlan Access PortsPorts in Vlan Figure A-2. Vlan Access Ports Index NumericsSnmp Index