Cisco Systems manual Cisco ME 3400-24TS Switches, Cisco ME 3400G-12CS Switches

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Appendix C Connecting to DC Power

Wiring the DC-Input Power Source

If you want to receive an alert if an external power supply fails, do not connect feeds to one terminal block and from there connect feeds to the second terminal block. (See the example in Figure C-7.) This configuration provides redundant power, and the switch continues to operate if one of the external power supplies fails. However, the software does not send a message to you that an internal power supply has failed.

Figure C-7 Connecting Feeds from One Terminal Block to the Second Terminal Block

							SYSTEM
	B			+			PS 1
-36	B			+	+		PS 2
-36		–	-72 V	A	+
CURRENT		–	-72 V	A	B
CURRENT		2 – 1A		INPUT -36	B
		2 – 1A		INPUT -36	–	-72 V
				CURRENT
					2 – 1A		CONSOLE	191867
							CONSOLE

Cisco ME 3400-24TS Switches

This warning only applies to Cisco ME 3400-24TS switches:

Warning This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that the protective device is rated not greater than:

5 A Statement 1005

Cisco ME 3400G-12CS Switches

This warning only applies to Cisco ME 3400G-12CS switches:

Warning This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that the protective device is rated not greater than:

6 A Statement 1005

All Cisco ME 3400 Switches

These warnings apply to all Cisco ME switches:

Warning A readily accessible two-poled disconnect device must be incorporated in the fixed wiring. Statement 1022

Cisco ME 3400 Ethernet Access Switch Hardware Installation Guide

	OL-7677-04	C-7

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Contents Americas Headquarters Page N T E N T S Installing and Removing SFP Modules Speed, Duplex, and Autonegotiation IP Settings D-2 Purpose AudienceOrganization Conventions Related Publications OL-7677-04 Switch Models Setting up the SwitchFront Panel Description 1describes the switch modelsCisco ME 3400-24TS AC Ethernet Access Switch Front Panel Cisco ME 3400-24TS AC and DC Switches Front PanelCisco ME 3400G-12CS AC and DC Switches Front Panel Cisco ME 3400-24FS Switch AC Switch Front PanelSystem LED Dual-purpose ports Console port SFP module ports Cisco ME 3400G-2CS Switch Front Panel10/100 Ports Only the Cisco ME-3400-24TS Switches SFP Modules SFP Module PortsSFP Module Patch Cable LEDsSystem LED These illustrations show the location of the System LEDConsole Port LEDs Power Supply LEDs Only Cisco ME 3400G-12CS SwitchesDual-Purpose Port LEDs Console PortCisco ME 3400-24FS Switch Rear Panel Cisco ME 3400-24TS Switch Rear PanelCable lock Ground connector Fan exhaust Exhaust fan Cable lock Ground connectorCisco ME 3400G-12S Switch Rear Panel Power Supply FeaturesCisco ME 3400-2CS Switch Rear Panel Fan exhaust AC power connector Ground connectorCisco ME DC Switch Power Supply Cisco ME AC Switch Power SupplyNetwork Configurations Management OptionsThis section covers these topics Preparing for InstallationSwitch Installation Preparing for Installation 122F 50C Statement Cisco ME 3400-24TS Switches Installation GuidelinesCisco ME 3400G-12CS Switches Installing the Switch Verifying Switch OperationPowering Off the Switch This section describes these installation proceduresRack-Mounting Removing Screws from the SwitchRack-Mounting Brackets Attaching Brackets to the SwitchAttaching Brackets to 19-Inch Racks 191022 Attaching Brackets for 23-Inch Racks Attaching Brackets for 24-Inch Racks Attaching Brackets for Etsi Racks Phillips machine screws Cable guide and screw Mounting the Switch in a RackWall-Mounting Attaching the Brackets to the Switch for Wall-MountingPhillips flat-head screws 11 Mounting the Switch on a Wall Mounting the Switch on a WallTable- or Shelf-Mounting Installing and Removing SFP Modules12 SFP Module with a Bale-Clasp Latch Installing SFP ModulesBale clasp Removing SFP ModulesInserting and Removing the SFP Module Patch Cable 17 Connecting to an Ethernet Port Connecting to the 10/100 and 10/100/1000 PortsConnecting to Fiber-Optic SFP Modules Connecting to SFP ModulesLC connector 19 Connecting to a 1000BASE-T SFP Module Connecting to 1000BASE-T SFP Modules20 Connecting to a Dual-Purpose Port Connecting to Dual-Purpose PortsWhere to Go Next Check Switch Post Results Diagnosing ProblemsThis section includes these troubleshooting topics Check Switch Connections Check Switch LEDsBad or Damaged Cable Ethernet and Fiber CablesPort and Interface Settings SFP Module Port IssuesPing the End Device Spanning Tree LoopsCheck Switch Performance How to Clear the Switch IP Address and ConfigurationSpeed, Duplex, and Autonegotiation Autonegotiation and NIC CardsSerial Number Location on the Cisco ME 3400G-2CS Switch Locating the Switch Serial NumberSerial Number Location on the Cisco ME 3400G-2CS Switch These sections describe the connectors used with the switch Connector Specifications10/100 Ports Figure A-1 10/100 Port Pinouts Dual-Purpose Ports Figure A-2 Fiber-Optic SFP Module LC ConnectorSFP Module Cable Specifications Cable and Adapter SpecificationsTwo Twisted-Pair Cable Pinouts Crossover Cable and Adapter Pinouts Four Twisted-Pair Cable Pinouts for 1000BASE-T PortsIdentifying a Crossover Cable TxD RxD Adapter PinoutsRxD TxD Switch Console RJ-45-to-DB-25 Port DTE This appendix lists the switch technical specifications Technical SpecificationsAC Power Requirements Physical Dimensions OL-7677-04 Connecting to DC Power Preparing the Ground Wire Grounding the SwitchReview these safety warnings before you ground the switch Figure C-1 Stripping the Ground Wire Figure C-3 Torquing Ground-Lug Screws Torque to 15 lbf-inTelco rack Grounding wire Connecting the Grounding Wire to Earth GroundTelco rack Primary power feed Secondary redundant power feed Wiring the DC-Input Power SourceCisco ME 3400G-12CS Switches Cisco ME 3400-24TS SwitchesAll Cisco ME 3400 Switches Figure C-8 Terminal Block Plug Console Figure C-11 Inserting Wires in the Terminal Block Plug Figure C-13 Completed Wiring of Terminal Block Plug OL-7677-04 Starting the Terminal-Emulation Software Accessing the CLI Through the Console PortIP Settings Entering the Initial Configuration InformationCompleting the Setup Program Enter an enable password, and press Return Enter an enable secret password, and press ReturnEnter a virtual terminal Telnet password, and press Return Switch or as a standalone switchThese choices appear Numerics Auto-MDIX Pinouts See also connectors and cables cautionsConnecting outside the building warning Cisco IOS command-line interface CiscoViewConnection procedures Connectors and cables 10/100 ports Console portIN-3 Installing SFP modules 2-17 toConnecting to DC LEDs Running at power on Power Connecting to ACPower on ConnectorsIN-5 Ground connectionIN-6