Cisco Systems 2960S-24TS-S manual 10/100 or 10/100/1000 Port Connections, SFP and SFP+ Module

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Chapter 3 Troubleshooting

Diagnosing Problems

10/100 or 10/100/1000 Port Connections

A port appears to malfunction:

Use the Mode button to show the status for all ports. See Table 1-8and Table 1-9for descriptions of the LEDs and their meanings.

Use the show interfaces privileged EXEC command to see if the port is error-disabled, disabled, or shutdown. Re-enable the port if necessary.

10/100 or 10/100/1000 PoE Port Connections

A powered device connected to PoE port does not receive power:

Use the Mode button to show the PoE status for all ports. See Table 1-8and Table 1-9for descriptions of the LEDs and their meanings.

Use the show interfaces privileged EXEC command to see if the port is in error-disabled, disabled, or shutdown. Re-enable the port if necessary.

Verify that the power supply installed in the switch meets the power requirements of your connected devices. See the “10/100 PoE+ Ports” section on page 1-5and the “10/100/1000 PoE+ Ports” section on page 1-5.

Verify the cable type. Many legacy powered devices, including older Cisco IP phones and access points that do not fully support IEEE 802.3af, might not support PoE when connected to the switch by a crossover cable. Replace the crossover cable with a straight-through cable.

Caution Noncompliant cabling or powered devices can cause a PoE port fault. Use only standard-compliant cabling to connect Cisco prestandard IP Phones and wireless access points or IEEE 802.3af-compliant devices. You must remove any cable or device that causes a PoE fault.

SFP and SFP+ Module

Use only Cisco SFP or SFP+ modules in the switch. Each Cisco module has an internal serial EEPROM that is encoded with security information. This encoding provides a way for Cisco to identify and validate that the module meets the requirements for the switch.

Inspect the SFP module. Exchange the suspect module with a known good module. Verify that the module is supported on this platform. (The switch release notes on Cisco.com list the SFP modules that the switch supports.)

Use the show interfaces privileged EXEC command to see if the port or module is error-disabled, disabled, or shutdown. Re-enable the port if needed.

Make sure that all fiber-optic connections are properly cleaned and securely connected.

Interface Settings

Verify that the interface is not disabled or powered off. If an interface is manually shut down on either side of the link, it does not come up until you re-enable the interface. Use the show interfaces privileged EXEC command to see if the interface is error-disabled, disabled, or shutdown on either side of the connection. If needed, re-enable the interface.

Catalyst 2960-S Switch Hardware Installation Guide

 

OL-19732-04

3-3

 

 

 

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Contents Americas Headquarters Catalyst 2960-S Switch Hardware Installation GuidePage N T E N T S Connecting to Fiber-Optic SFP and SFP+ Modules Uninstalling the Cisco Microsoft Windows USB Driver C-5 Catalyst 2960-S Switch Hardware Installation Guide Preface Related Publications Obtaining Documentation and Submitting a Service RequestDescription Switch ModelsSupported Switch Model Catalyst 2960S-48FPD-L Front Panel Front PanelCatalyst 2960S-48TS-L Front Panel Catalyst 2960S-F48FPS-L Front Panel 10/100/1000 PoE+ Ports 10/100 PoE+ Ports10/100/1000 Ports 10/100 PortsUSB Mini-Type B Port Management PortsSFP and SFP+ Module Slots USB Type a PortSupported SFP Modules SFP-H10GB-CU3M= Supported SFP+ ModulesSFP-10G-LRM= SFP-H10GB-CU1M=Color System Status LEDsSystem LED RPS 1 LEDPort LEDs and Modes Port Mode DescriptionMode LED Port Mode Description Master LEDColor PoE Status Port Mode Port LED Color MeaningSpeed Stack10/100 and 10/100/1000 ports Stack member 1 3 Stack member Stack LEDColor Description Console LEDsConsole LEDs show which console port is in use Ethernet Management Port LED Rear Panel12 Catalyst 2960-S Switch Rear Panel with an RPS connector Fan exhaust AC power connector RPS connectorCisco RPS RPS ConnectorFan exhaust AC power connector FlexStack PortsManagement Options AC Power ConnectorNetwork Configurations OL-19732-04 Preparing Safety WarningsRead these topics and perform the procedures in this order PWR-RPS2300Statement 113F 45C. Statement Tools and Equipment Installation GuidelinesBox Contents Stack Guidelines Planning a Switch StackVerifying Switch Operation Switch Installation Planning a Switch Stack Secure the screws tightly on each side of the module Installing the FlexStack ModuleStack Bandwidth and Partitioning Examples Stack CablingStack with Half Bandwidth Connections Rack-Mounting Installing the SwitchPower-On Sequence for Switch Stacks 10 Rack-Mounting Brackets Attaching the Rack-Mount Brackets12 Attaching Brackets for 19-inch Racks 13 Mounting in a Rack Mounting in a RackPhillips truss-head screws Wall-MountingAttaching the Brackets for Wall-Mounting Statement Attaching the RPS Connector Cover16 Mounting on a Wall Mounting on a WallTable- or Shelf-Mounting Connecting the FlexStack CablesAfter Switch Installation 18 Inserting the Retainer through the Lanced Loop Installing the Power Cord Retainer Optional19 Sliding the Retainer Through the Latch Slide the retainer through the first latch. See Figure21 Sleeve Around the Power Cord Installing SFP and SFP+ ModulesRemoving an SFP or SFP+ Module Installing an SFP or SFP+ ModuleConnecting to Fiber-Optic SFP and SFP+ Modules Connecting to SFP and SFP+ Modules24 Connecting to a Fiber-Optic SFP Module Port Connecting to 1000BASE-T SFP10/100 and 10/100/1000 PoE+ Port Connections RJ-45 connectorDevice Crossover Cable1 Switch to switch Yes Switch to hubDevice Crossover Cable Where to Go Next10/100 and 10/100/1000 Port Connections Switch LEDs Diagnosing ProblemsSwitch Post Results Link Status Switch ConnectionsBad or Damaged Cable Ethernet and Fiber-Optic CablesSFP and SFP+ Module Interface Settings10/100 or 10/100/1000 Port Connections 10/100 or 10/100/1000 PoE Port ConnectionsSpeed, Duplex, and Autonegotiation Switch PerformancePing End Device Spanning Tree LoopsCabling Distance Clearing the Switch IP Address and ConfigurationFinding the Switch Serial Number Troubleshooting Finding the Switch Serial Number Serial Number Location for the C2960S-STACK Module Serial Number Location for the C2960S-F-STACK Module Replacing a Failed Stack Member OL-19732-04 Environmental Ranges Technical SpecificationsPower Requirements Physical Dimensions Power Requirements Physical Dimensions OL-19732-04 10/100 Ports Including PoE Connector Specifications10/100/1000 Ports Including PoE SFP Module ConnectorsSFP Module Cables Cables and Adapters1000BASE-LX/LH 1000BASE-SXGLC-SX-MM GLC-TCable Pinouts Two Twisted-Pair Straight-Through Cable SchematicDevice Switch Console RJ-45-to-DB-9 Port DTEConsole Port Adapter Pinouts Switch Console RJ-45-to-DB-25 Port DTE OL-19732-04 Accessing the CLI Through the Console Port Accessing the CLI Through Express SetupConnecting the RJ-45 Console Port or USB Console Port Installing the Cisco Microsoft Windows XP USB Driver Installing the Cisco Microsoft Windows USB Device DriverInstalling the Cisco Microsoft Windows Vista USB Driver Installing the Cisco Microsoft Windows 2000 USB DriverUninstalling the Cisco Microsoft Windows Vista USB Driver Uninstalling the Cisco Microsoft Windows USB DriverCompleting the Setup Program Entering the Initial Configuration InformationIP Settings Switch or as a standalone switch Enter an enable password, and press ReturnEnter a virtual terminal Telnet password, and press Return Application. To configure Snmp later, enter noThese choices appear 10/100/1000 PoE ports Numbering NumericsIN-2 Rack-mounting 2-10 to SFP and SFP+ modulesLED RPSStatus Post Restricted access area RPS connector cover IN-6
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2960S, WSC2960S24TSSRF, 2960S-24TS-S, 2960 specifications

Cisco Systems 2960 series switches are a prominent solution in the networking landscape, known for their reliability, scalability, and feature-rich offerings. Ideal for small to medium-sized enterprises, these switches provide a robust foundation for network infrastructure, ensuring optimal performance and connectivity.

One of the standout features of the Cisco 2960 series is its Layer 2 switching capabilities. The switches support multiple VLANs (Virtual Local Area Networks), allowing network administrators to segment traffic efficiently and enhance security protocols. This is crucial in modern networks where managing traffic and isolating sensitive information is a priority.

The Cisco 2960 series also incorporates advanced Quality of Service (QoS) features, enabling the prioritization of critical applications and services. This functionality ensures that time-sensitive data, such as voice and video traffic, maintains a high quality of service even in congested networks. With support for IEEE 802.1p and DSCP marking, administrators can fine-tune their network performance to meet specific organizational needs.

Power over Ethernet (PoE) is another significant characteristic of the Cisco 2960 series. This feature allows switches to deliver electrical power alongside data over Ethernet cables to devices such as IP phones, wireless access points, and surveillance cameras. With PoE, organizations can reduce clutter from power cables and increase deployment flexibility for various devices.

In terms of security, the Cisco 2960 series is equipped with a range of integrated security features. The switch supports port security, 802.1X authentication, and Access Control Lists (ACLs), providing robust defenses against unauthorized access and potential network vulnerabilities. These security measures are essential for protecting sensitive data and ensuring compliance with industry regulations.

Moreover, the Cisco 2960 series offers enhanced network management capabilities with Cisco's Intelligent Network Services. This includes support for Simple Network Management Protocol (SNMP), Cisco Prime, and Embedded Event Manager (EEM), allowing for efficient monitoring, troubleshooting, and policy enforcement across the network.

Additionally, the Cisco 2960 switches provide various models and configurations, catering to different networking needs. Options include models with varying port densities, uplink configurations, and stacking capabilities, making it easy for organizations to choose solutions that align perfectly with their requirements.

In summary, the Cisco 2960 series is a versatile and essential component of modern networking environments. Its advanced features, including Layer 2 support, QoS, PoE, robust security, and diverse management tools, make it an excellent choice for organizations looking to build a strong and secure network infrastructure.