Black Box LGB6000SC-004, LGB6001C, LGB6000SC-001 Stacking Topologies, Making Stacking Connections

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CHAPTER 3 Installing the Switch

Connecting Switches in a Stack

Figure 18: Making Stacking Connections

5.Select the Master unit in the stack by pressing the Master button in on only one of the switches. Only one switch in the stack can operate as the Master, all other units operate in slave mode. If more than one switch in the stack is selected as Master, or if no switches are selected, the system will select the unit with the lowest MAC address as the Master.

STACKING TOPOLOGIES

All units in the stack must be connected via stacking cable (part numbers LGB6000SC-001 or LGB6000SC-004). You can connect units in a simple cascade configuration, connecting Down ports to Up ports, from the top unit to the bottom unit. Using this “line” topology, if any link or unit in the stack fails, the stack is split and two separate segments are formed. The Stack Link LEDs on the units that are disconnected flash to indicate that the stack link between them is not functioning (see Table 2, “System Status LEDs,” on page 27).

When using line topology and a stack link failure occurs, the stack reboots and a Master unit is selected within each of the two stack segments. The Master unit will be either the unit with the Master button depressed or the unit with the lowest MAC address if the Master button is not depressed on any unit. When the stack reboots and resumes operations, note that the IP address will be the same for both of the stack segments. To resolve the conflicting IP addresses, you

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Contents Customer Support Information Blackbox.com Blackbox.com INS Tallation Guide Industry Canada Class a Compliances and Safety StatementsFCC Class a Japan Vcci Class aCE Mark Declaration of Conformance for EMI and Safety EEC Safety Compliance PSE a LarmPower Cord Safety France and Peru onlyPower 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 Audience About this GuidePurpose ConventionsRevision History Contents Making Network Connections TroubleshootingSpecifications CablesTables Tables Figures Figures Introduction OverviewSwitch Architecture LGB6050ASFP Transceiver Slots Description of HardwareNetwork Management Options Port and System Status Leds Gigabit Ethernet Module SlotsStacking Ports System LEDs Chapter Optional Redundant Power SupplyPower Supply Socket 10GBASE SFP+ Module Expandability Features and BenefitsConnectivity PerformanceManagement Introduction Introduction to Switching Network PlanningApplication Examples Collapsed BackboneNetwork Aggregation Plan Network Aggregation PlanRemote Connections with Fiber Cable Remote Connections with Fiber CableMaking Vlan Connections Making Vlan ConnectionsUsing Layer 3 Routing IP Routing for Unicast TraffiApplication Notes Network Planning Installing the Switch Selecting a SiteEthernet Cabling RJ-45 ConnectionsOptional RACK-MOUNTING Equipment Equipment ChecklistPackage Contents Mounting Rack MountingAttaching the Brackets Desktop or Shelf Mounting Attaching the Adhesive FeetInstalling AN Optional Module Into the Switch Installing an Optional ModuleInstalling AN Optional SFP Transceiver Inserting an SFP Transceiver into a SlotConnecting Switches in a Stack Stacking Topologies Making Stacking ConnectionsConnecting to a Power Source Power SocketConnecting to the Console Port Wiring MAP for Serial CableInstalling the Switch Installing the Switch Connecting to the Console Port TWISTED-PAIR Devices Connecting Network DevicesMaking Network Connections Cabling GuidelinesConnecting to PCS, SERVERS, Hubs and Switches Making Twisted-Pair ConnectionsNetwork Wiring Connections Network Wiring Connections Fiber Optic SFP DevicesMaking Fiber Port Connections Making Network Connections Gbps Fiber Optic Connections Connecting to an SFP+ Transceiver Gbps Ethernet Collision Domain Connectivity Rules1000BASE-T Cable Requirements Micron single 40 km 24.85 miles Mode fiber Cable Labeling and Connection Records Mbps Ethernet Collision DomainMaking Network Connections Troubleshooting Diagnosing Switch IndicatorsDiagnosing Power Problems with the Leds RPU LEDIN-BAND Access Power and Cooling ProblemsInstallation Stack Troubleshooting Cables TWISTED-PAIR Cable and PIN AssignmentsSTRAIGHT-THROUGH Wiring 10BASE-T/100BASE-TX PIN AssignmentsCrossover Wiring Straight-through WiringCable Testing for Existing Category 5 Cable 1000BASE-T PIN AssignmentsAdjusting Existing Category 5 Cabling to RUN 1000BASE-T Fiber StandardsNon-Zero Dispersion-Shifted Ports SpecificationsPhysical Characteristics Network InterfaceLeds AC InputSwitch Features IN-BAND Management Management FeaturesStandards OUT-OF-BAND ManagementCE Mark 10GBASE Extender Module SFP+Compliances Standards Glossary CSMA/CD 10GBASE-LR10GBASE-SR Fast Ethernet IeeeEthernet FULL-DUPLEXLED MIBVirtual LAN Vlan TIAUTP Glossary Index NumericsDiag Black Box Tech Support FREE! Live /7