Enterasys Networks ELS10-27TX manual Ports in Vlan, Vlan Egress, Vlan Access Ports

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ELS10-27TX VLAN Configuration

A.2.2 PORTS IN VLAN

A port is made a member of the VLAN by the VLAN command. A port can be a member of multiple VLAN IDs. If a packet is received without a tag, the default VLAN for that port is applied to the packet. The default VLAN ID for a port is set with the port command.

A.2.3 VLAN EGRESS

For hybrid ports, if a tag within the frame matches the PVID of the port, the tag will be stripped. If a tag within the frame does not match the PVID, the frame will be transmitted from the port.

For access ports, the tag will always be stripped.

A.2.4 VLAN ACCESS PORTS

Individual ELS10-27TX ports can be configured as one of two types for the purpose of VLAN configuration: Access or Hybrid. A VLAN Access port is used to connect one or more VLAN-unaware devices to the switch. VLAN tagged frames are not allowed to enter or exit an Access port. If a tagged frame enters the switch on an Access port, the switch will add the PVID to the frame and forward the frame based on it. Only end-user stations which do not support 802.1Q tags should be attached to ports on the switch configured as Access ports.

In Example 1 in Figure A-2, both ports are designated as Access ports. The ports are both configured to be on VLAN X. An untagged frame (1) comes in through the left port and gets tagged with a VLAN X tag (2), based on the incoming port PVID. As the frame exits through the right port, the tag is stripped (3) since the outgoing port is an Access port as well and can only transmit untagged frames.

The frame can propagate through the switch in this example only because both ports are on the same VLAN.

In Example 2 in Figure A-2, both ports are also Access ports, however the port on the left is on VLAN X while the port on the right is on VLAN Y. The untagged frame (1) comes in through the left port and again gets tagged with a VLAN X tag

(2). However, because the outgoing port is on a different VLAN (VLAN Y), the frame is dropped. In general, frames cannot propagate between ports unless both ports belong to the same VLAN.

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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 Vlan MIB Objects Configuring Vlans Using SnmpXiii Configuring Workgroups Using Snmp Configuring Workgroups Using LCMWorkgroup MIB Objects Appendix a Virtual Lans Vlans IndexAbout this Supplement Your email address Getting HelpDocument Conventions Document Title Part Number Related DocumentationProduct Overview Using Vlans on the ELS10-27TXIeee 802.1Q Standard 802.1Q Mode on ELS10-27TX Vlan Hybrid Ports 802.1Q ModeVlan Access Ports 802.1Q Mode Preserving Priority 3 802.1Q Trunk PortsNon-Preserving Priority Accessing Network Management Using VLANsSwitch Mode Default Port Vlan IDAssigning Ports to a Vlan Enable Gvrp Restricting VLANs 802.1Q ModeWorkgroups Virtual Workgroups will only operate in 802.1D modeInstallation and Management Default GatewayPage LCM Conventions OverviewSubset of LCM Commands LCM Command SummaryLCM Command Syntax Help Basic LCM CommandsErase Exit or LogoutEnable Command Address Limit LCM CommandsRoute Command Port Command Port CommandEnhancements to LCM Commands Switch Command Trap Control Command ELS10-27vlan add 5-9 blue Vlan CommandPage Config Table Configuring Vlans Using Snmp OverviewModifying, Creating and Deleting VLANs Step ActionModifying a Vlan Deleting a Vlan Creating a VlanConfig Egress List Modifying a Config Egress List Entry Modifying, Creating or Deleting a Filter Gvrp Table Entry Filter Gvrp TableDeleting a Filter Creating a FilterStatic MAC Entry Creating a Static MAC EntryDeleting a Static MAC Entry Vlan Version Number Bridge ConfigurationReset VlanReset Operating Mode VlanOperatingModeSyntax Octet String Size Gvrp Enable VlanGVRPEnableVlan VlanConfigVlan Access List VlanAccessListConfiguration Entries Entry VlanConfigEntryVlanConfigEntry VID VlanConfigVID Index VlanConfigIndexIP VlanConfigIP Ports VlanConfigPortsName VlanConfigName IP Mask VlanConfigIPMaskEstablish VlanConfigEstablish Status VlanConfigStatusStatic Configured VlanNumConfiguredEntries Device EntriesActive VlanNumActiveEntries Maximum Number VlanMaxNumEntries Configuration Table VlanConfigTableEgress Entry VlanConfigEgressEntry Egress Table Egress Table VlanConfigEgressTableIndex VlanEgressIndex VlanConfigEgressEntryList VlanEgressList VID VlanEgressVIDStatus VlanEgressStatus Filter Gvrp Gvrp VlanFilterGVRPTableEntry VlanFilterGVRPEntry VlanFilterGVRPEntry VlanFilterGVRPIndexList VlanFilterGVRPList VID VlanFilterGVRPVIDEstablishVID VlanFilterGVRPEstablishVID Status VlanFilterGVRPStatusStatic MAC Address Entries Table VlanStaticTableEntry VlanStaticEntry VlanStaticEntry VID VlanStaticVIDPort VlanStaticPort MAC VlanStaticMACEstablish VlanStaticEstablish Page Chapter Configuring Workgroups Using LCM Overview Workgroup Default Workgroup Configuration ExamplesWorkgroup Superset Workgroups are only valid in 802.1D mode LCM Workgroup CommandsELS10-27workgroup omega Page Chapter Configuring Workgroups Using Snmp Overview Workgroup Configuration Procedures Configuring Workgroups Using Snmp Page Workgroups Using Snmp Chapter Workgroup MIB Objects OverviewNext Number WorkGroupNextNumber MAX Count WorkGroupMaxCount Current Count WorkGroupCurrentCountTable WorkGroupTable Entry WorkGroupEntry Name WorkGroupName Number WorkGroupNumberType WorkGroupType Ports WorkGroupPortsVlan Vlan Y Appendix a Virtual Lans Vlans Vlans and Frame TaggingVlan ID ELS10-27TX Vlan ConfigurationVlan Access Ports Ports in VlanVlan Egress Figure A-2. Vlan Access Ports Numerics IndexSnmp Index