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Cabletron Systems 2H253-25R manual 6 Straight Cable Connection, Transmit TX

Models: 2H253-25R

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Transmit (TX)

Connecting to the Network

LED MODE Switch in RX–TX position

Receive (RX)

LED

MODE

RX-TX

					Transmit (TX)
	DPX-SPD				Transmit (TX)
	DPX-SPD

			SWITCH
FAST	ETHERNET		WORKGROUP
FAST	ETHERNET		LED
			MODE
			RX-TX
			DPX-SPD
			PWR
			CPU
			RESET
2H253		-25R	COM
		-25R

									20	22	24
								18		22	23
							16			21
						14			19
					12			17
				10			15
			8			13
		6
	4				11
				9
2			7
		5
	3
1

Screw

LED MODE Switch

RJ21

Screw

2762-07

Figure 3-6 Straight Cable Connection

3.Tighten the two screws on the RJ21 straight cable connector to secure it to the device.

NOTE

The cable pinouts for a 25-pair cable (RJ21) can be found in the Cabletron Systems Cabling Guide. Refer to Section 1.2 for details on how to obtain this document.

4.Verify that a link exists on each twisted pair segment of the RJ21 connector by checking that the associated port RX LED is on (flashing amber, blinking green, or solid green). If the RX LED is off and the TX LED is not blinking amber, perform the following steps until it is on:

a.Verify that the LED switch located near the COM port of the device is in the left-most position (RX and TX LED indicators) as shown in Figure 3-6.

b.Verify that the UTP cabling used is Category 3 (for 10BASE-T) or Category 5 (for 10BASE-T or 100BASE-TX). The Category 5 cabling must have an impedance of between 85 and 111 ohms.

NOTE

If a port is to operate at 10 and 100 Mbps, Category 5 cabling must be used. Refer to Section 2.3 for information about 100BASE-TX networks and cabling.

Installation 3-9

Image 39

Cabletron Systems 2H253-25R manual 6 Straight Cable Connection, Transmit TX

Contents

2H253-25R 2H253-25R SmartSwitch Installation User’s GuideFAST ETHERNET WORKGROUP SWITCH RESETPage Only qualiﬁed personnel should perform installation procedures FCC NOTICE INDUSTRY CANADA NOTICEVCCI NOTICE CABLETRON SYSTEMS, INC PROGRAM LICENSE AGREEMENT Page CABLETRON SYSTEMS SALES AND SERVICE, INC PROGRAM LICENSE AGREEMENT 7. NO LIABILITY FOR CONSEQUENTIAL DAMAGES. IN NO EVENT SHALL CABLETRON OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS, PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, SPECIAL, INCIDENTAL, CONSEQUENTIAL, OR RELIANCE DAMAGES, OR OTHER LOSS ARISING OUT OF THE USE OR INABILITY TO USE THIS CABLETRON PRODUCT, EVEN IF CABLETRON HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. BECAUSE SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES, OR IN THE DURATION OR LIMITATION OF IMPLIED WARRANTIES IN SOME INSTANCES, THE ABOVE LIMITATION AND EXCLUSIONS MAY NOT APPLY TO YOU CABLETRON SYSTEMS LIMITED PROGRAM LICENSE AGREEMENT viii If the Program is exported from the United States pursuant to the License Exception TSR under the U.S. Export Administration Regulations, in addition to the restriction on transfer set forth in Sections 1 or 2 of this Agreement, You agree not to i reexport or release the Program, the source code for the Program or technology to a national of a country in Country Groups D1 or E2 Albania, Armenia, Azerbaijan, Belarus, Bulgaria, Cambodia, Cuba, Estonia, Georgia, Iraq, Kazakhstan, Kyrgyzstan, Laos, Latvia, Libya, Lithuania, Moldova, North Korea, the People’s Republic of China, Romania, Russia, Rwanda, Tajikistan, Turkmenistan, Ukraine, Uzbekistan, Vietnam, or such other countries as may be designated by the United States Government, ii export to Country Groups D1 or E2 as deﬁned herein the direct product of the Program or the technology, if such foreign produced direct product is subject to national security controls as identiﬁed on the U.S. Commerce Control List, or iii if the direct product of the technology is a complete plant o r any major component of a plant, export to Country Groups D1 or E2 the direct product of the plant or a major component thereof, if such foreign produced direct product is subject to national security controls as identiﬁed on the U.S. Commerce Control List or is subject to State Department controls under the U.S. Munitions ListDECLARATION OF CONFORMITY Page ABOUT THIS GUIDE ContentsINTRODUCTION NETWORK REQUIREMENTSOPTIONAL INSTALLATIONS AND MODE SWITCH BANK SETTINGS INSTALLATIONTROUBLESHOOTING SPECIFICATIONSxiii FiguresCOM Port Pin Assignments TablesTroubleshooting Checklist LANVIEW LEDsImportant Notice USING THIS GUIDEAbout This Guide STRUCTURE OF THIS GUIDEWAN Series Local Management User’s Guide HSIM-W6 Installation Guide HSIM-W84 Installation GuideRELATED DOCUMENTS Ethernet Technology Guide Cabling Guide SmartTrunk User’s GuideThe guide uses the following conventions DOCUMENT CONVENTIONSPage Introduction 1.1 OVERVIEWImportant Notice 1.1.2 Auto-Negotiation 1.1.1 ConnectivityThe 2H253-25R will reboot after RAD is successful 1.1.4 Full Duplex Switched Ethernet1.1.3 Runtime IP Address Discovery 1.1.5 SmartTrunk1.1.6 Remote Monitoring RMON 1.1.7 Broadcast Suppression1.1.8 Port/VLAN Redirect Functions 1.1.10 Flow Control 1.1.9 Rate Limiting1.1.13 Management 1.1.11 GARP Switch Operation1.1.14 Switching Options 1.1.12 802.1 Port Priority1.1.17 Year 2000 Compliant 1.1.18 LANVIEW Diagnostic LEDs1.1.15 Optional HSIMs and VHSIMs 1.1.16 Standards Compatibility1.2 GETTING HELP anonymousyour email address Network Requirements 2.1 SmartTrunk2.2 10BASE-T NETWORK 2.3 100BASE-TX NETWORK 100BASE-TX Network2-2 Network Requirements 3.1 UNPACKING THE DEVICE Installation3.2 INSTALLING OPTIONS 3.3 INSTALLING THE DEVICETable 3-1 Contents of 2H253-25R Carton 3.3.1 Tabletop or Shelf Installation Guidelines for Tabletop and Shelf InstallationsInstallation 3.3.2 Rackmount Installation Guidelines for the Rackmount InstallationA = 15 cm 6 in B = 57 cm 22.5 in C = 53 cm 21 in D = 213 cm 7 ft Attaching the Strain-Relief Bracket InstallationRack mounting the 2H253-25R involves the following Rack Mounting the 2H253-25R To connect the 2H253-25R to the power sources, proceed as follows 3.3.3 Connecting Power3.4 CONNECTING TO THE NETWORK Transmit TX Figure 3-6 Straight Cable Connection3.5 COMPLETING THE INSTALLATION 4.1 USING LANVIEW TroubleshootingDevice electronics not Table 4-1 LANVIEW LEDs Cont’d Should ﬂash green every two 2E253, 2H252, 2H253, and 2H258 4.2 TROUBLESHOOTING CHECKLISTRefer to the SmartSwitch Series 1. Refer to the SmartSwitch Series2E253, 2H252, 2H253, and 2H258 Series 2E253, 2H252, 2H253, and2H258 Local Management User’s Refer to the SmartSwitch Seriessometime before either cycling NVRAM Reset, was changedFigure 4-2 RESET Button 4.3 USING THE RESET BUTTONA.1 DEVICE SPECIFICATIONS SpeciﬁcationsA.2 PHYSICAL PROPERTIES 200-240 Vac A.3 ELECTRICAL SPECIFICATIONSA.4 ENVIRONMENTAL REQUIREMENTS A.5 INPUT/OUTPUT PORTSA.6 COM PORT PINOUT ASSIGNMENTS A.7 REGULATORY COMPLIANCEFCC Part 15, CSA C108.8, 89/336/EEC, EN Page B.1 REQUIRED TOOLS Optional Installations and Mode Switch Bank SettingsRemoving the Chassis Cover B.2 REMOVING THE CHASSIS COVERThis section describes how to remove the 2H253-25R chassis cover B-2 Optional Installations and Mode Switch Bank SettingsTo remove the chassis cover, proceed as follows Figure B-1 Removing the Chassis Cover B-4 Optional Installations and Mode Switch Bank SettingsRemoving the Chassis Cover Screws Chassis Cover Front Panel ChassisB.3 SETTING THE MODE SWITCHES B.4 SIMM UPGRADE SIMM UpgradeB-6 Optional Installations and Mode Switch Bank Settings B.4.1 Locating SIMMs B.4.2 Installing the DRAM SIMMB-8 Optional Installations and Mode Switch Bank Settings SIMM UpgradeConnector Connector Teeth Clip Side Notch Figure B-4 Installing the DRAMOptional Installations and Mode Switch Bank Settings B.5 INSTALLING OPTIONAL HSIM OR VHSIM INTERFACE MODULESInstalling Optional HSIM or VHSIM Interface Modules Figure B-5 HSIM and VHSIM Connector LocationsPage Numerics IndexIndex-2 Index