Cisco Systems Cisco ME 3400E Clearing the Switch IP Address and Configuration, Switch Performance

Page 72

Appendix 4 Troubleshooting

Clearing the Switch IP Address and Configuration

Switch Performance

Speed, Duplex, and Autonegotiation

If the port statistics show a large amount of alignment errors, frame check sequence (FCS), or late-collisions errors, this might mean a speed or duplex mismatch.

A common issue with speed and duplex is when the duplex settings are mismatched between two switches, between a switch and a router, or between the switch and a workstation or server. Mismatches can happen when manually setting the speed and duplex or from autonegotiation issues between the two devices.

To maximize switch performance and to ensure a link, follow one of these guidelines when changing the duplex or speed settings.

•Let both ports autonegotiate both speed and duplex.

•Manually set the speed and duplex parameters for the ports on both ends of the connection.

•If a remote device does not autonegotiate, set the same duplex settings on the two ports. The speed parameter adjusts itself even if the connected port does not autonegotiate.

Autonegotiation and NICs

Problems sometimes occur between the switch and third-party network interface cards (NICs). By default, the switch ports and interfaces are set to autonegotiate. Devices like laptops or other devices are commonly set to autonegotiate, yet sometimes autonegotation issues occur.

To troubleshoot autonegotiation problems, try manually setting both sides of the connection. If this does not solve the problem, there could be a problem with the firmware or software on your NIC. You can resolve this by upgrading the NIC driver to the latest available version.

Cabling Distance

If the port statistics show excessive FCS, late-collision, or alignment errors, verify that the cable distance from the switch to the connected device meets the recommended guidelines. See the “Cables and Adapters” section on page B-4for cabling guidelines.

Clearing the Switch IP Address and Configuration

This section describes how to reset the switch by rerunning the initial configuration dialog (system configuration dialog). These are reasons why you might want to reset the switch:

•You installed the switch in your network and cannot connect to it because you assigned the wrong IP address.

•You want to clear all the configuration settings from the switch and assign a new IP address.

Caution This procedure clears the IP address and all configuration information stored on the switch. Do not follow this procedure unless you want to completely reconfigure the switch.

Cisco ME 3400E Ethernet Access Switch Hardware Installation Guide

4-4

OL-16447-01

 

 

Page 71 Page 73
Image 72
Page 71 Page 73
Contents Americas Headquarters Text Part Number OL-16447-01Page N T E N T S Installing the Switch Rack-Mounting Link Status IP Settings C-2 Audience PurposeRelated Publications ViiiObtaining Documentation and Submitting a Service Request OL-16447-01 Setting Up the Switch Switch ModelsSwitch Model Description Front PanelCisco ME 3400EG-12CS-M Front Panel AC- and DC-Power Input Connectors Alarm Input PortManagement Port 10/100 Fast Ethernet PortsDual-Purpose Ports SFP ModulesSFP Module Patch Cable Part Number DescriptionUNIs, NNIs, and ENIs LEDsSwitch LED Panels Color System StatusPower-Supply Module LEDs Switch Power-Supply LEDsEthernet Management Port LED Alarm LEDs Port LEDsDual-Purpose Port LEDs LED Color MeaningPower-supply slot Ground connection Rear PanelPower Supply Features 11 Cisco ME 3400EG-2CS-A Rear PanelNetwork Configurations Management OptionsSwitch Installation Switch Installation Switch Installation Installation Guidelines Verifying Switch Operation Installing the SwitchPowering Off the Switch Removing Screws from the Switch Rack-MountingAttaching Brackets to the Switch Rack-Mounting BracketsAttaching Brackets for 19-Inch Racks Attaching Brackets for 19-Inch, 23-Inch, and 24-Inch Racks Attaching Brackets for 23-Inch Racks Attaching Brackets for 24-Inch Racks Attaching Brackets for Etsi Racks Mounting in a Rack Mounting in a RackWall-Mounting Attaching Brackets for Wall-MountingMounting the Switch on a Wall Cisco ME 3400EG-12CS-M Cisco ME 3400E-24TS-M Cisco ME 3400EG-2CS-A Installing and Removing SFP Modules Installing SFP ModulesTable- or Shelf-Mounting 16 SFP Module with a Bale-Clasp Latch Inserting and Removing the SFP Module Patch Cable Removing SFP ModulesConnecting to the 10/100 and 10/100/1000 Ports Removing the SFP Module Patch Cable21 Connecting to an Ethernet Port Connecting to Fiber-Optic SFP Modules 22 Connecting to a Fiber-Optic SFP Module PortConnecting to 1000BASE-T SFP Modules 23 Connecting to a 1000BASE-T SFP ModuleConnecting to Dual-Purpose Ports Where to Go NextPower-Supply Module Description Product OverviewModel number Description Handle-Side Description PSU OK LEDPSU OK Power-Supply Module Installation Connector-Side DescriptionAC-Power-Supply Module DC-Power-Supply ModuleInstallation Guidelines Tools and EquipmentInstalling an AC-Power-Supply Module AC-1 PSU-1 AC-2 PSU-2Removing AC-Power-Supply Modules AC-Power Supply and Power-Cord Retainer in a SwitchInstalling a DC-Power-Supply Module Preparing for Installation Grounding the SwitchRemove the ground screw from the switch rear panel Installing the DC-Power-Supply Module in the Switch 12 Attaching the Ground Lug and Wire AssemblyWiring the DC-Input Power Source Statement15 Terminal Block Plug 18 Inserting Wires in the Terminal Block Plug 21 Inserting the Terminal Block in the Block Header Removing the DC-Power-Supply Module 22 DC-Power Terminal Block With Two FeedsPower Supply Settings OL-16447-01 Diagnosing Problems Switch Post ResultsSwitch LEDs Switch ConnectionsBad or Damaged Cable Ethernet and Fiber CablesSFP Module Port Issues Port and Interface SettingsPing the End Device Spanning Tree LoopsClearing the Switch IP Address and Configuration Switch PerformanceSpeed, Duplex, and Autonegotiation Autonegotiation and NICsFinding the Switch Serial Number Serial Number Location on the Cisco ME 3400E-24TS-MOL-16447-01 Environmental Ranges SFP Module 32 to 131F 0 to 55C 32 to 140F 0 to 60CWith 1 Power-Supply With 2 Power-Supply SFP Module Modules 32 to 149F 0 to 65C32 to 149 F 0 to 65C Physical Dimensions AC-Power RequirementsDC-Power Requirements Physical Dimensions Physical Specifications Power SpecificationsPower Specifications OL-16447-01 Connector Specifications 10/100SFP Module Connectors Figure B-2 Fiber-Optic SFP Module LC Connector10/100 Ethernet Management Port Figure B-3 10/100/1000 Port PinoutsCables and Adapters SFP Module CablesCore Modal Bandwidth SFP Module Wavelength nanometers Fiber Type1000BASE-SX Cable Pinouts Figure B-6Console Port Adapter Pinouts DSR DTR CTS RTSSwitch Console RJ-45-to-DB-25 Port DTE Accessing the CLI Through the Console Port Starting the Terminal-Emulation SoftwareEntering the Initial Configuration Information IP SettingsCompleting the Setup Program Enter an enable secret password, and press Return These choices appear Numerics IN-2 IN-3 IN-4 IN-5 IN-6
Top Page Image Contents