Cisco Systems 3110G, 3110X, 3012 Resetting the Switch Module, Verify Switch Module Performance

Page 34

Chapter 3 Troubleshooting

Resetting the Switch Module

Verify Switch Module Performance

Review this section when troubleshooting switch module performance problems.

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 switch modules, between a switch module and a router, or between the switch module and a workstation or server. This can happen when manually setting the speed and duplex or from autonegotiation issues between the two devices. A mismatch occurs under these circumstances:

A manually set speed or duplex parameter is different from the manually set speed or duplex parameter on the connected port.

A port is set to autonegotiate, and the connected port is set to full duplex with no autonegotiation.

To maximize switch module performance and ensure a link, follow one of these guidelines when changing the settings for duplex and speed:

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, configure the duplex settings on the two ports to match. The speed parameter can adjust itself even if the connected port does not autonegotiate.

Autonegotiation and Network Interface Cards

Problems sometimes occur between the switch module and third-party network interface cards (NICs). By default, the switch module ports and interfaces are set to autonegotiate. It is common for devices like laptops or other devices to be set to autonegotiate as well, 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 version available from the manufacture.

Cabling Distance

If the port statistics show excessive FCS, late-collision, or alignment errors, verify that the cable distance from the switch module to the connected device meets the recommended guidelines. See the “Cable and Adapter Specifications” section on page B-2for cabling guidelines.

Resetting the Switch Module

For a standalone switch, you can perform these functions by using the AMM web interface:

Reboot the switch

Restore factory defaults

Set or reset the IP address, netmask, and default gateway

Enable or disable external ports

Catalyst Switch Module 3110G, 3110X, and 3012 for IBM BladeCenter Hardware Installation Guide

3-4

OL-12192-01

 

 

Image 34
Contents Americas Headquarters Text Part Number OL-12192-01Page N T E N T S Diagnosing Problems Purpose PrefaceAudience ConventionsRelated Publications Product Overview Switch ModulesSwitch Model IBM Part Number DescriptionHardware Features WS-CBS3012-IBM WS-CBS3012-IBM-ICatalyst Switch Module 10/100/1000 Ethernet PortsInternal 100BASE-T Ethernet Management Port Gigabit Ethernet Module SlotPort Numbering Port DescriptionSwitch Module LEDs Switch Module LEDs and Mode ButtonStack Master LED Mode ButtonSystem Power LED Color System StatusFault LED Fault/Stack Mode LEDStack Member LED Color Activity LED Description Link Status LED Description Port LEDsColor LED Description Console Port Management OptionsStackWise Plus Ports Port Status LED DescriptionNetwork Configurations Preparing for Installation Switch Module InstallationSafety Warnings OL-12192-01 Installation Guidelines Box ContentsInstalling the Switch Module Blade Enclosure Rear-Panel ViewAfter Installing the Switch Module Installing the Switch ModuleCreating Switch Stacks Stacking GuidelinesConnecting a Switch Stack Connecting the StackWise Plus CablesSwitch Stack Cabling Examples 203295 203296 Installing Devices in the 10-Gigabit Ethernet Slot Installing an X2 Transceiver ModuleInstalling an X2 Transceiver Module Removing a ModuleWhere to Go Next Connecting Devices to the Ethernet PortsDevice Crossover Cable OL-12192-01 Verify Switch Module Post Results TroubleshootingDiagnosing Problems Verify Switch Module LEDsEthernet and Fiber Cables Verify Switch Module ConnectionsBad or Damaged Cable Link StatusPing End Device Transceiver IssuesPort and Interface Settings Spanning Tree LoopsSpeed, Duplex, and Autonegotiation Resetting the Switch ModuleVerify Switch Module Performance Autonegotiation and Network Interface CardsHow to Replace a Failed Stack Member Using the Mode Button to Reset the Switch ModuleOL-12192-01 Power Specifications Technical SpecificationsPhysical Specifications Environmental RangesOL-12192-01 Connector Specifications Connector and Cable Specifications10/100/1000 Ports Cable and Adapter Specifications Gigabit Ethernet Module InterfaceGigabit Ethernet X2 Transceiver Module Cable Specifications Four Twisted-Pair Straight-Through Cable Schematic Four Twisted-Pair Cable PinoutsTwo Twisted-Pair Cable Pinouts Identifying a Crossover CableOL-12192-01 Numerics IN-2 IN-3 IN-4