Alcatel-Lucent 6300-24 manual Making Vlan Connections

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Application Examples 2

Making VLAN Connections

VLANs can be based on port groups, or each data frame can be explicitly tagged to identify the VLAN group to which it belongs. When using port-based VLANs, ports can either be assigned to one specific group or to all groups. Port-based VLANs are suitable for small networks. A single switch can be easily configured to support several VLAN groups for various organizational entities (such as Finance and Marketing).

When you expand port-based VLANs across several switches, you need to make a separate connection for each VLAN group. This approach is, however, inconsistent with the Spanning Tree Protocol, which can easily segregate ports that belong to the same VLAN. When VLANs cross separate switches, you need to use VLAN tagging. This allows you to assign multiple VLAN groups to the “trunk” ports (that is, tagged ports) connecting different switches.

R&D

VLAN 1

Tagged

Ports

	OmniStack
	6300-24
1000=Green 10/100=Yellow
Link/	Power
Act	Console
FDX	Diag
Link/	BPS
Act	BPS
FDX

Untagged Ports

Tagged Port

Finance

VLAN 2

Testing

VLAN 3

VLAN 4

	VLAN
VLAN	aware
unaware	switch
switch
	R&D

Marketing

Finance

Testing

VLAN 1

VLAN 2

VLAN 3

Figure 2-4. Making VLAN Connections

Note: When connecting to a switch that does not support IEEE 802.1Q VLAN tags, use untagged ports.

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Contents Part No -10, Rev. a December OmniStackPage Page Page Compliances and Safety Warnings Industry Canada Class B Vii Safety ComplianceUnderwriters Laboratories Compliance Statement Warnhinweis Faseroptikanschlüsse Optische SicherheitViii Wichtige Sicherheitshinweise GermanyDocumentation Environmental StatementEnd of Product Life Span Manufacturing MaterialsRelated Publications PurposeContents Glossary Index Appendix a TroubleshootingAppendix C Specifications Appendix B CablesTables Tables Xii Figures Figures Xiv Network Management Options Switch ArchitectureIntroduction OverviewIntroduction Description of Hardware10/100/1000BASE-T Ports SFP SlotsStatus LEDs Port Status LEDsCondition Status System LEDs System Status LEDs Optional Backup Power Supply Power Supply ReceptaclesFeatures and Benefits Management Network Planning Introduction to SwitchingApplication Examples Collapsed BackboneNetwork Planning Network Aggregation Plan Network Aggregation PlanRemote Connection with Fiber Cable Remote Connection with Fiber CableMaking Vlan Connections Making Vlan ConnectionsApplication Notes Installing the Switch Selecting a SiteEthernet Cabling Equipment Checklist Package ContentsOptional Rack-Mounting Equipment To rack-mount devices MountingRack Mounting MountingDesktop or Shelf Mounting Installing the Switch in a RackInstalling an Optional SFP Transceiver into the Switch Connecting to a Power SourcePower Receptacle Connecting to the Console PortWiring Map for Serial Cable Serial Cable Wiring Switch’s 9-Pin Null Modem PC’s 9-PinDTE Port Installing the Switch Twisted-Pair Devices Connecting to PCs, Servers, Hubs and SwitchesConnecting Network Devices Making Network ConnectionsMaking Network Connections Network Wiring ConnectionsMaking LC Port Connections Fiber Optic SFP DevicesMbps Gigabit Ethernet Collision Domain ConnectorConnectivity Rules 1000BASE-T Cable RequirementsMbps Fast Ethernet Collision Domain Mbps Ethernet Collision Domain100 m 328 ft RJ-45 Cable Labeling and Connection Records Installation Appendix a TroubleshootingDiagnosing Switch Indicators Power and Cooling ProblemsTroubleshooting Appendix B Cables Twisted-Pair Cable and Pin Assignments10BASE-T/100BASE-TX Pin Assignments Cables 1000BASE-T Pin AssignmentsFiber Standards B Fiber StandardsCables Physical Characteristics Appendix C SpecificationsSpecifications CompliancesCE Mark Glossary-1 GlossaryGlossary-2 GlossaryGlossary-3 LEDGlossary Glossary-4 Index-1 IndexIndex-2 IndexPage 060190-10