Non-Preserving Priority | Enterasys Networks ELS10-27TX manual

Introduction

1.3.3.2 Non-Preserving Priority

Use this method if there is no concern about passing priority from one device to another. Configure the same PVID at both ends of the trunk link to ensure that all traffic will be forwarded correctly.

In order to implement this, the ports at both ends of the link must work the same, that is:

•Strips tags on egress of the ports that match the PVID

•Inserts a tag using the PVID when there is no tag

•Changes the tag on egress with an ID of zero to the PVID

The tag will be stripped on egress of that port, when it matches the PVID. When the packet is received by the peer, a tag with the same VLAN ID will be inserted and the packet will be forwarded as though the packet traversed the trunk link with the tag in place. However, the priority bits will not be reserved.

1.3.4 Accessing Network Management Using VLANs

When an IP address is configured on the unit, it must be associated with the VLAN. If multiple VLANs are configured on a switch, you can configure multiple IP addresses provided they are on separate subnets. Therefore, when an IP address is assigned to a switch, the VLAN ID for the subnet must be specified. When the network management processor issues a response to a network management packet, it selects the correct VLAN ID to use based on the IP subnet.

For further information, refer to IP Address Command or the VLAN Command in Chapter 2, Enhancements to LCM Commands.

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Enterasys Networks ELS10-27TX manual Accessing Network Management Using VLANs, Non-Preserving Priority

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 Snmp Xiii Configuring Workgroups Using Snmp Configuring Workgroups Using LCMWorkgroup MIB Objects Appendix a Virtual Lans Vlans Index About this Supplement Your email address Getting Help Document Conventions Document Title Part Number Related Documentation Product Overview Using Vlans on the ELS10-27TX Ieee 802.1Q Standard Vlan Hybrid Ports 802.1Q Mode 802.1Q Mode on ELS10-27TXVlan Access Ports 802.1Q Mode Preserving Priority 3 802.1Q Trunk Ports Non-Preserving Priority Accessing Network Management Using VLANs Default Port Vlan ID Switch ModeAssigning Ports to a Vlan Enable Gvrp Restricting VLANs 802.1Q Mode Workgroups Virtual Workgroups will only operate in 802.1D mode Installation and Management Default GatewayPage LCM Conventions Overview Subset of LCM Commands LCM Command Summary LCM Command Syntax Help Basic LCM CommandsErase Exit or Logout Enable Command Address Limit LCM Commands Route Command Port Command Port Command Enhancements to LCM Commands Switch Command Trap Control Command ELS10-27vlan add 5-9 blue Vlan CommandPage Config Table Configuring Vlans Using Snmp Overview Step Action Modifying, Creating and Deleting VLANsModifying a Vlan Deleting a Vlan Creating a Vlan Config Egress List Modifying a Config Egress List Entry Modifying, Creating or Deleting a Filter Gvrp Table Entry Filter Gvrp Table Deleting a Filter Creating a Filter Creating a Static MAC Entry Static MAC EntryDeleting a Static MAC Entry Vlan Version Number Bridge Configuration Reset VlanReset Operating Mode VlanOperatingMode Syntax Octet String Size Gvrp Enable VlanGVRPEnable Vlan VlanConfigVlan Access List VlanAccessList Entry VlanConfigEntry Configuration EntriesVlanConfigEntry VID VlanConfigVID Index VlanConfigIndex IP VlanConfigIP Ports VlanConfigPorts Name VlanConfigName IP Mask VlanConfigIPMask Establish VlanConfigEstablish Status VlanConfigStatus Device Entries Static Configured VlanNumConfiguredEntriesActive VlanNumActiveEntries Maximum Number VlanMaxNumEntries Configuration Table VlanConfigTable Egress Entry VlanConfigEgressEntry Egress Table Egress Table VlanConfigEgressTable Index VlanEgressIndex VlanConfigEgressEntry List VlanEgressList VID VlanEgressVID Status VlanEgressStatus Gvrp VlanFilterGVRPTable Filter GvrpEntry VlanFilterGVRPEntry VlanFilterGVRPEntry VlanFilterGVRPIndex List VlanFilterGVRPList VID VlanFilterGVRPVID EstablishVID VlanFilterGVRPEstablishVID Status VlanFilterGVRPStatus Table VlanStaticTable Static MAC Address EntriesEntry VlanStaticEntry VlanStaticEntry VID VlanStaticVID Port VlanStaticPort MAC VlanStaticMAC Establish VlanStaticEstablish Page Chapter Configuring Workgroups Using LCM Overview Workgroup Default Workgroup Configuration Examples Workgroup Superset Workgroups are only valid in 802.1D mode LCM Workgroup Commands ELS10-27workgroup 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 MAX Count WorkGroupMaxCount Current Count WorkGroupCurrentCount Table WorkGroupTable Entry WorkGroupEntry Name WorkGroupName Number WorkGroupNumber Type WorkGroupType Ports WorkGroupPorts Vlan Vlan Y Appendix a Virtual Lans Vlans Vlans and Frame Tagging Vlan ID ELS10-27TX Vlan Configuration Ports in Vlan Vlan Access PortsVlan Egress Figure A-2. Vlan Access Ports Numerics Index Snmp Index