Enterasys Networks ELS10-27TX manual Virtual Workgroups will only operate in 802.1D mode

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Introduction

1.4 WORKGROUPS

This section describes Workgroup support for the SmartSTACK Ethernet ELS10-27TX switch. The switch supports up to eight user defined Workgroups, with limited support for overlapping Workgroups.

The purpose of Workgroups is to isolate broadcast and multicast traffic to within the Workgroup. In some cases, unicast traffic will also be isolated. Due to the fact that a typical unicast address is obtained by first issuing an ARP packet (which is a broadcast, and the broadcast packet will not be forwarded outside of the Workgroup), the unicast address will not be learned outside of the Workgroup. The end result is that host or servers will not be able to communicate with other hosts or servers outside of their Workgroup.

Unlike IEEE standard VLANs which span switches, Workgroups only deal with filtering and forwarding of frames within the single switch. When packets are received on a port, the packet will be identified with a single Workgroup. The packet will then be forwarded or filtered based on that single Workgroup marking. When a packet leaves the switch, the packet will appear just as it did when it was received on the inbound port.

The SmartSTACK Ethernet ELS10-27TX allows you to define ports for logical groups of associated devices (virtual workgroups) to provide a more efficient flow of traffic across your Ethernet network. You can define a maximum of eight virtual workgroups. The number of ports within a Workgroup is not restricted and an individual port can be a member of multiple Virtual Workgroups.

NOTE

Virtual Workgroups will only operate in 802.1D mode.

Virtual workgroups offer the ability to limit broadcasts to logical domains within the network. Workgroup destinations are recognized by the SmartSTACK Ethernet ELS10-27TX and broadcast and unicast packets are routed directly to hosts within the workgroup, eliminating the need to perform a general broadcast across each segment of the network to find specific host addresses.

For further information, refer to the Workgroup Command in Chapter 5, Configuring Workgroups Using LCM.

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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 Hybrid Ports 802.1Q Mode 802.1Q Mode on ELS10-27TXVlan Access Ports 802.1Q Mode 3 802.1Q Trunk Ports Preserving PriorityAccessing Network Management Using VLANs Non-Preserving PriorityDefault Port Vlan ID Switch ModeAssigning Ports to a Vlan 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 TableStep Action Modifying, Creating and Deleting VLANsModifying a Vlan 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 FilterCreating a Static MAC Entry Static MAC EntryDeleting a Static MAC Entry Bridge Configuration Vlan Version NumberOperating Mode VlanOperatingMode Reset VlanResetGvrp Enable VlanGVRPEnable Syntax Octet String SizeAccess List VlanAccessList Vlan VlanConfigVlanEntry VlanConfigEntry Configuration EntriesVlanConfigEntry Index VlanConfigIndex VID VlanConfigVIDPorts VlanConfigPorts IP VlanConfigIPIP Mask VlanConfigIPMask Name VlanConfigNameStatus VlanConfigStatus Establish VlanConfigEstablishDevice Entries Static Configured VlanNumConfiguredEntriesActive VlanNumActiveEntries Configuration Table VlanConfigTable Maximum Number VlanMaxNumEntriesEgress Table Egress Table VlanConfigEgressTable Egress Entry VlanConfigEgressEntryVlanConfigEgressEntry Index VlanEgressIndexVID VlanEgressVID List VlanEgressListStatus VlanEgressStatus Gvrp VlanFilterGVRPTable Filter GvrpEntry VlanFilterGVRPEntry VlanFilterGVRPIndex VlanFilterGVRPEntryVID VlanFilterGVRPVID List VlanFilterGVRPListStatus VlanFilterGVRPStatus EstablishVID VlanFilterGVRPEstablishVIDTable VlanStaticTable Static MAC Address EntriesEntry VlanStaticEntry 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 Chapter Workgroup MIB Objects Overview Workgroups Using SnmpNext Number WorkGroupNextNumber 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 IDPorts in Vlan Vlan Access PortsVlan Egress Figure A-2. Vlan Access Ports Index NumericsSnmp Index