Black Box LGB6000SC-001, LGB6001C, LGB6000SC-004, LGB6026A, LGB6050A manual Making Vlan Connections

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CHAPTER 2 Network Planning

Application Examples

MAKING VLAN CONNECTIONS

These switches support VLANs which can be used to organize any group of network nodes into separate broadcast domains. VLANs confine broadcast traffic to the originating group, and can eliminate broadcast storms in large networks. This provides a more secure and cleaner network environment.

VLANs can be based on untagged port groups, or traffic can be explicitly tagged to identify the VLAN group to which it belongs. Untagged VLANs can be used for small networks attached to a single switch. However, tagged VLANs should be used for larger networks, and all the VLANs assigned to the inter-switch links.

These switches also support multiple spanning trees which allow VLAN groups to maintain a more stable path between all VLAN members. This can reduce the overall amount of protocol traffic crossing the network, and provide a shorter reconfiguration time if any link in the spanning tree fails.

At Layer 3, VLANs are used to create an IP interface, where one or more ports are assigned to the same IP segment. Traffic is automatically routed between different IP segments on the same switch, without any need to configure routing protocols.

Figure 10: Making VLAN Connections

R&D

VLAN	1
	Tagge d
	Ports

					Unta gged Ports
									VLAN
		Fina nce							una ware
		Fina nce							switch
VLAN 2									switch
VLAN 2
Testing								Marketing
								Marketing


	VLAN 3

			VLAN 4

Tagge d Port

VLAN aware switch

R& D

Finance

Testing

VLAN 1 VLAN 2

VLAN 3

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

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Contents Customer Support Information Blackbox.com Blackbox.com INS Tallation Guide FCC Class a Compliances and Safety StatementsIndustry Canada Class a Japan Vcci Class aCE Mark Declaration of Conformance for EMI and Safety EEC PSE a Larm Safety ComplianceFrance and Peru only Power Cord SafetyPower Cord Set France et Pérou uniquement Sein und die Aufschrift HAR oder Basec tragen Environmental Statements END of Product Life Span Compliances and Safety Statements Purpose About this GuideAudience ConventionsRevision History Contents Specifications TroubleshootingMaking Network Connections CablesTables Tables Figures Figures Overview IntroductionLGB6050A Switch ArchitectureNetwork Management Options Description of HardwareSFP Transceiver Slots Stacking Ports Gigabit Ethernet Module SlotsPort and System Status Leds System LEDs Power Supply Socket Optional Redundant Power SupplyChapter 10GBASE SFP+ Module Connectivity Features and BenefitsExpandability PerformanceManagement Introduction Network Planning Introduction to SwitchingCollapsed Backbone Application ExamplesNetwork Aggregation Plan Network Aggregation PlanRemote Connections with Fiber Cable Remote Connections with Fiber CableMaking Vlan Connections Making Vlan ConnectionsIP Routing for Unicast Traffi Using Layer 3 RoutingApplication Notes Network Planning Selecting a Site Installing the SwitchRJ-45 Connections Ethernet CablingPackage Contents Equipment ChecklistOptional RACK-MOUNTING Equipment Rack Mounting MountingAttaching the Brackets Attaching the Adhesive Feet Desktop or Shelf MountingInstalling an Optional Module Installing AN Optional Module Into the SwitchInserting an SFP Transceiver into a Slot Installing AN Optional SFP TransceiverConnecting Switches in a Stack Making Stacking Connections Stacking TopologiesPower Socket Connecting to a Power SourceWiring MAP for Serial Cable Connecting to the Console PortInstalling the Switch Installing the Switch Connecting to the Console Port Making Network Connections Connecting Network DevicesTWISTED-PAIR Devices Cabling GuidelinesMaking Twisted-Pair Connections Connecting to PCS, SERVERS, Hubs and SwitchesNetwork Wiring Connections Fiber Optic SFP Devices Network Wiring ConnectionsMaking Fiber Port Connections Making Network Connections Gbps Fiber Optic Connections Connecting to an SFP+ Transceiver 1000BASE-T Cable Requirements Connectivity RulesGbps Ethernet Collision Domain Micron single 40 km 24.85 miles Mode fiber Mbps Ethernet Collision Domain Cable Labeling and Connection RecordsMaking Network Connections Diagnosing Switch Indicators TroubleshootingRPU LED Diagnosing Power Problems with the LedsInstallation Power and Cooling ProblemsIN-BAND Access Stack Troubleshooting TWISTED-PAIR Cable and PIN Assignments Cables10BASE-T/100BASE-TX PIN Assignments STRAIGHT-THROUGH WiringStraight-through Wiring Crossover Wiring1000BASE-T PIN Assignments Cable Testing for Existing Category 5 CableFiber Standards Adjusting Existing Category 5 Cabling to RUN 1000BASE-TNon-Zero Dispersion-Shifted Physical Characteristics SpecificationsPorts Network InterfaceAC Input LedsSwitch Features Standards Management FeaturesIN-BAND Management OUT-OF-BAND ManagementCompliances 10GBASE Extender Module SFP+CE Mark Standards Glossary 10GBASE-SR 10GBASE-LRCSMA/CD Ethernet IeeeFast Ethernet FULL-DUPLEXMIB LEDUTP TIAVirtual LAN Vlan Glossary Numerics IndexDiag Black Box Tech Support FREE! Live /7