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Cabletron Systems 2H253-25R manual Guidelines for the Rackmount Installation

Models: 2H253-25R

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A = 15 cm (6 in)

Installing the Device

B

C

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

A = 15 cm (6 in)

B = 57 cm (22.5 in) C = 53 cm (21 in) D = 213 cm (7 ft)

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

D

2762-02

Figure 3-1 Tabletop or Shelf Installation

3.3.2Rackmount Installation

To install the 2H253-25R in a 19-inch rack, Cabletron Systems includes a strain-relief bracket for cable management and an accessory kit containing the rackmount brackets, and mounting screws to attach the rackmount brackets and strain-relief bracket.

Guidelines for the Rackmount Installation

The installation site must be within reach of the network cabling and meet the requirements listed below:

•An appropriate grounded power receptacle must be located within seven feet of the location.

•Maintain a temperature of between 5°C (41°F) and 40°C (104°F) at the installation site with ﬂuctuations of less than 10°C (18°F) per hour.

To ensure proper ventilation and prevent overheating, leave a minimum clearance space

!of 5.1 cm (2.0 in) at the left, right, and rear of the 2H253-25R.

CAUTION

WARNING

Before installing the 2H253-25R into a rack, ensure that the rack supports the device(s) without compromising the stability of the rack. Otherwise, personal injury and/or equipment damage may result.

3-4Installation

Image 34

Cabletron Systems 2H253-25R manual Guidelines for the Rackmount Installation

Contents

RESET 2H253-25R SmartSwitch Installation User’s GuideFAST ETHERNET WORKGROUP SWITCH 2H253-25RPage Only qualiﬁed personnel should perform installation procedures INDUSTRY CANADA NOTICE FCC 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 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 List viiiDECLARATION OF CONFORMITY Page NETWORK REQUIREMENTS ContentsINTRODUCTION ABOUT THIS GUIDESPECIFICATIONS INSTALLATIONTROUBLESHOOTING OPTIONAL INSTALLATIONS AND MODE SWITCH BANK SETTINGSFigures xiiiLANVIEW LEDs TablesTroubleshooting Checklist COM Port Pin AssignmentsSTRUCTURE OF THIS GUIDE USING THIS GUIDEAbout This Guide Important NoticeEthernet Technology Guide Cabling Guide SmartTrunk User’s Guide HSIM-W6 Installation Guide HSIM-W84 Installation GuideRELATED DOCUMENTS WAN Series Local Management User’s GuideDOCUMENT CONVENTIONS The guide uses the following conventionsPage 1.1 OVERVIEW IntroductionImportant Notice 1.1.1 Connectivity 1.1.2 Auto-Negotiation1.1.5 SmartTrunk 1.1.4 Full Duplex Switched Ethernet1.1.3 Runtime IP Address Discovery The 2H253-25R will reboot after RAD is successful1.1.7 Broadcast Suppression 1.1.6 Remote Monitoring RMON1.1.8 Port/VLAN Redirect Functions 1.1.9 Rate Limiting 1.1.10 Flow Control1.1.12 802.1 Port Priority 1.1.11 GARP Switch Operation1.1.14 Switching Options 1.1.13 Management1.1.16 Standards Compatibility 1.1.18 LANVIEW Diagnostic LEDs1.1.15 Optional HSIMs and VHSIMs 1.1.17 Year 2000 Compliantanonymous 1.2 GETTING HELPyour email address 2.1 SmartTrunk Network Requirements2.2 10BASE-T NETWORK 100BASE-TX Network 2.3 100BASE-TX NETWORK2-2 Network Requirements Installation 3.1 UNPACKING THE DEVICE3.3 INSTALLING THE DEVICE 3.2 INSTALLING OPTIONSTable 3-1 Contents of 2H253-25R Carton Guidelines for Tabletop and Shelf Installations 3.3.1 Tabletop or Shelf InstallationInstallation Guidelines for the Rackmount Installation 3.3.2 Rackmount InstallationA = 15 cm 6 in B = 57 cm 22.5 in C = 53 cm 21 in D = 213 cm 7 ft Installation Attaching the Strain-Relief BracketRack mounting the 2H253-25R involves the following Rack Mounting the 2H253-25R 3.3.3 Connecting Power To connect the 2H253-25R to the power sources, proceed as follows3.4 CONNECTING TO THE NETWORK Figure 3-6 Straight Cable Connection Transmit TX3.5 COMPLETING THE INSTALLATION Troubleshooting 4.1 USING LANVIEWDevice electronics not Table 4-1 LANVIEW LEDs Cont’d Should ﬂash green every two 1. Refer to the SmartSwitch Series 4.2 TROUBLESHOOTING CHECKLISTRefer to the SmartSwitch Series 2E253, 2H252, 2H253, and 2H258Refer to the SmartSwitch Series Series 2E253, 2H252, 2H253, and2H258 Local Management User’s 2E253, 2H252, 2H253, and 2H258NVRAM Reset, was changed sometime before either cycling4.3 USING THE RESET BUTTON Figure 4-2 RESET ButtonSpeciﬁcations A.1 DEVICE SPECIFICATIONSA.2 PHYSICAL PROPERTIES A.5 INPUT/OUTPUT PORTS A.3 ELECTRICAL SPECIFICATIONSA.4 ENVIRONMENTAL REQUIREMENTS 200-240 VacA.7 REGULATORY COMPLIANCE A.6 COM PORT PINOUT ASSIGNMENTSFCC Part 15, CSA C108.8, 89/336/EEC, EN Page Optional Installations and Mode Switch Bank Settings B.1 REQUIRED TOOLSB-2 Optional Installations and Mode Switch Bank Settings B.2 REMOVING THE CHASSIS COVERThis section describes how to remove the 2H253-25R chassis cover Removing the Chassis CoverTo remove the chassis cover, proceed as follows Screws Chassis Cover Front Panel Chassis B-4 Optional Installations and Mode Switch Bank SettingsRemoving the Chassis Cover Figure B-1 Removing the Chassis CoverB.3 SETTING THE MODE SWITCHES SIMM Upgrade B.4 SIMM UPGRADEB-6 Optional Installations and Mode Switch Bank Settings B.4.2 Installing the DRAM SIMM B.4.1 Locating SIMMsFigure B-4 Installing the DRAM SIMM UpgradeConnector Connector Teeth Clip Side Notch B-8 Optional Installations and Mode Switch Bank SettingsFigure B-5 HSIM and VHSIM Connector Locations B.5 INSTALLING OPTIONAL HSIM OR VHSIM INTERFACE MODULESInstalling Optional HSIM or VHSIM Interface Modules Optional Installations and Mode Switch Bank SettingsPage Index NumericsIndex Index-2