Allied Telesis AT-GS950/8 manual Guidelines for Creating a Vlan

Page 46

Chapter 6: VLANs

Guidelines for Creating a VLAN

member of the VLAN). These frames are untagged after transmission from the switch.

The following are guidelines for creating a VLAN.

Each VLAN must be assigned a unique VID. If a particular VLAN spans multiples switches, each part of the VLAN on the different switches should be assigned the same VID.

A port can be an untagged member of only one VLAN at a time and can receive both tagged and untagged packets.

If you want a port to be an untagged member of a different VLAN, you must first modify the VLAN (usually the default VLAN) where the port is an untagged member. First, delete that port from the original VLAN and then assign the port to another VLAN as an untagged port.

A VLAN that spans multiple switches requires a port on each switch where the VLAN is located to function as an interconnection between the switches where the various parts of the VLAN reside.

This port may be defined as an untagged member of a VLAN where the port is connected to another switch via another untagged port member of the VLAN. This means that all traffic on this inter-switch port contains traffic for that VLAN only.

Another scenario is where the port could be an untagged member of one VLAN and a tagged member of one or more VLANs. The port would then be connected to another switch via a port with the same VLAN membership. This means that the traffic on this inter-switch port is for any or all of the VLANs of which the port is a member.

If there are end nodes in different VLANs that need to communicate with each other, a router or Layer 3 switch is required to interconnect the VLANs.

The switch can support up to a total of 255 VLANs.

46

Image 46

Contents Management Software Page Contents Contents Figures Figures Preface Where to Find Web-based Guides Management Software Updates Contacting Allied TelesisPreface Getting Started ChapterStarting a Management Session Main Save Configuration Click Apply Saving ChangesQuitting a Management Session Getting Started Basic Switch Parameters Basic Switch Parameters AT-S82 Management Software User’s Guide Disabled EnabledDisabling or Enabling Ping Blocking Enabling or Disabling 802.1X Forwarding Control Changing the Administrator’s Password Rebooting the Switch Resetting the Switch and Retaining the IP Address Reset Click Apply Switch is resetAT-S82 Management Software User’s Guide Downloading New Firmware Download Status MessagePort Configuration Configuring Port Parameters Port is enabled. This is the default Copper FiberTrunking Trunking Overview Trunking Guidelines Trunking AlgorithmAT-S82 Management Software User’s Guide Configuring the Trunking Algorithm DAxorSASetting up the Trunk Port Trunking ConfigurationTrunking Port Mirroring Port Mirroring Overview Configuring Port Mirroring Port Mirroring VLANs Vlan Features Increased Performance Improved Manageability SecurityAT-S82 Management Software User’s Guide Vlan Overview Vlan Identifier Vlan Port MembersIncoming Outgoing Tagged Untagged Frames Guidelines for Creating a Vlan Working with VLANs Vlan DetailDisplaying all VLANs Click Show All Static Vlan EntriesVlan Protected Ports Vlan Protected Ports Vlan ExampleAT-S82 Management Software User’s Guide VLANs Class of Service Class of Service Overview Mapping Ports to Egress QueuesIeee 802.1p Priority Level Port Priority Queue Port Egress Queue Maximum Number Packets Mapping Priorities to Queues Setting Up the Schedule Assigning Priority to Ports Class of Service Spanning Tree Protocol STP Spanning Tree Overview Bridge Priority RootPath Costs and Port Costs Increment Bridge PriorityPort Speed Port Cost Port Priority Increment Port PriorityHello Time and Bridge Protocol Data Units BPDUs Point-to-Point and Edge Ports Edge Port Spanning Tree and VLANs Spanning Tree Protocol STP Configuring Spanning Tree Rstp STP CompatibleDisabled Configuring STP Port Settings True YesFalse AutoSpanning Tree Protocol STP

Related manuals

Manual 44 pages 22.06 Kb