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Cabletron Systems 2H253-25R manual Using The Reset Button, 2 RESET Button

Models: 2H253-25R

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4.3USING THE RESET BUTTON

Using the RESET Button

4.3USING THE RESET BUTTON

The RESET button shown in Figure 4-2resets and re-initializes the 2H253-25R.

Pressing the RESET button resets the device, and all current switching being performed

!by the device is halted. A network downtime of up to two minutes will result from this

CAUTION action.

FAST ETHERNET WORKGROUP SWITCH

	LED	2	4	6	8	10	12
	MODE	1	3	5	7	9	11
	RX-TX	1	3	5	7	9	11
	RX-TX
	DPX-SPD

	PWR
RESET	CPU
2H253-25R	COM

RESET Button

14 16 18 20 22 24

13 15 17 19 21 23

2762-10

Figure 4-2 RESET Button

To reset the 2H253-25R processor, press and release the RESET button. The 2H253-25R goes through a reset process for approximately 60 seconds. Additional downtime may result as the device reenters the network.

NOTE

It is not recommended to press the RESET button while the device is already in reset mode. If so, the device will enter an extended diagnostic procedure, which is unnecessary for normal operation. This extended diagnostic procedure takes much longer than a minute.

4-8Troubleshooting

Image 48

Cabletron Systems 2H253-25R manual Using The Reset Button, 2 RESET Button

Contents

2H253-25R SmartSwitch Installation User’s Guide FAST ETHERNET WORKGROUP SWITCHRESET 2H253-25RPage 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 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 Contents INTRODUCTIONNETWORK REQUIREMENTS ABOUT THIS GUIDEINSTALLATION TROUBLESHOOTINGSPECIFICATIONS OPTIONAL INSTALLATIONS AND MODE SWITCH BANK SETTINGSFigures xiiiTables Troubleshooting ChecklistLANVIEW LEDs COM Port Pin AssignmentsUSING THIS GUIDE About This GuideSTRUCTURE OF THIS GUIDE Important NoticeHSIM-W6 Installation Guide HSIM-W84 Installation Guide RELATED DOCUMENTSEthernet Technology Guide Cabling Guide SmartTrunk User’s Guide WAN Series Local Management User’s GuideDOCUMENT CONVENTIONS The guide uses the following conventionsPage Introduction 1.1 OVERVIEWImportant Notice 1.1.1 Connectivity 1.1.2 Auto-Negotiation1.1.4 Full Duplex Switched Ethernet 1.1.3 Runtime IP Address Discovery1.1.5 SmartTrunk The 2H253-25R will reboot after RAD is successful1.1.6 Remote Monitoring RMON 1.1.7 Broadcast Suppression1.1.8 Port/VLAN Redirect Functions 1.1.9 Rate Limiting 1.1.10 Flow Control1.1.11 GARP Switch Operation 1.1.14 Switching Options1.1.12 802.1 Port Priority 1.1.13 Management1.1.18 LANVIEW Diagnostic LEDs 1.1.15 Optional HSIMs and VHSIMs1.1.16 Standards Compatibility 1.1.17 Year 2000 Compliant1.2 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 Installation 3.1 UNPACKING THE DEVICE3.2 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 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 4.2 TROUBLESHOOTING CHECKLIST Refer to the SmartSwitch Series1. Refer to the SmartSwitch Series 2E253, 2H252, 2H253, and 2H258Series 2E253, 2H252, 2H253, and 2H258 Local Management User’sRefer to the SmartSwitch Series 2E253, 2H252, 2H253, and 2H258NVRAM Reset, was changed sometime before either cycling4.3 USING THE RESET BUTTON Figure 4-2 RESET ButtonA.1 DEVICE SPECIFICATIONS SpeciﬁcationsA.2 PHYSICAL PROPERTIES A.3 ELECTRICAL SPECIFICATIONS A.4 ENVIRONMENTAL REQUIREMENTSA.5 INPUT/OUTPUT PORTS 200-240 VacA.6 COM PORT PINOUT ASSIGNMENTS A.7 REGULATORY COMPLIANCEFCC Part 15, CSA C108.8, 89/336/EEC, EN Page Optional Installations and Mode Switch Bank Settings B.1 REQUIRED TOOLSB.2 REMOVING THE CHASSIS COVER This section describes how to remove the 2H253-25R chassis coverB-2 Optional Installations and Mode Switch Bank Settings Removing the Chassis CoverTo remove the chassis cover, proceed as follows B-4 Optional Installations and Mode Switch Bank Settings Removing the Chassis CoverScrews Chassis Cover Front Panel Chassis Figure B-1 Removing the Chassis CoverB.3 SETTING THE MODE SWITCHES B.4 SIMM UPGRADE SIMM UpgradeB-6 Optional Installations and Mode Switch Bank Settings B.4.2 Installing the DRAM SIMM B.4.1 Locating SIMMsSIMM Upgrade Connector Connector Teeth Clip Side NotchFigure B-4 Installing the DRAM B-8 Optional Installations and Mode Switch Bank SettingsB.5 INSTALLING OPTIONAL HSIM OR VHSIM INTERFACE MODULES Installing Optional HSIM or VHSIM Interface ModulesFigure B-5 HSIM and VHSIM Connector Locations Optional Installations and Mode Switch Bank SettingsPage Index NumericsIndex Index-2