Cisco Catalyst 4948E 48-Port Gigabit Switch User Manual

1. Introduction

This manual provides essential information for the proper installation, operation, maintenance, and troubleshooting of the Cisco Catalyst 4948E 48-Port Gigabit Switch (Model: WS-C4948E-F). Please read this manual thoroughly before using the device to ensure optimal performance and safety.

The Cisco Catalyst 4948E-F Ethernet Switch is designed for server-access switching, offering forty-eight 10/100/1000 Mbps RJ45 downlink ports and four 1/10 Gigabit Ethernet uplink ports. It is optimized for full-featured Top-of-Rack (ToR) data center deployments in a one Rack Unit (1RU) form factor.

2. Safety Information

WARNING: Failure to follow these safety instructions could result in fire, electric shock, or other injury or damage.

• Ensure the power supply voltage matches the local power grid.
• Do not operate the switch in environments with excessive heat, humidity, or dust.
• Always disconnect power before performing any maintenance or installation procedures.
• This device should be installed by qualified personnel.
• Ensure proper grounding to prevent electrical hazards.

3. Package Contents

Verify that all items are present and in good condition. If any item is missing or damaged, contact your vendor.

• Cisco Catalyst 4948E 48-Port Gigabit Switch (WS-C4948E-F)
• Power Cords (quantity may vary based on region)
• Rack-mount Kit
• Documentation (Quick Start Guide, Safety Information)

Figure 1: Front view of the Cisco Catalyst 4948E 48-Port Gigabit Switch, showing 48 RJ45 ports and 4 SFP+ uplink ports.

4. Product Overview

4.1 Front Panel

The front panel of the Cisco Catalyst 4948E-F switch features:

• 48 x 10/100/1000BASE-T RJ45 Ports: For connecting network devices such as servers, workstations, and other switches.
• 4 x 1/10 Gigabit Ethernet SFP+ Uplink Ports: For high-speed connections to the core network or other switches.
• Status LEDs: Indicators for system status, port activity, and power.

4.2 Rear Panel

The rear panel typically includes:

• Dual AC Power Supply Slots: For redundant power supplies.
• Console Port: For local management and initial configuration.
• Management Ethernet Port: For out-of-band management.

5. Setup and Installation

5.1 Rack Mounting

The Cisco Catalyst 4948E-F is a 1U rack-mountable device. Follow these steps to install it in a standard 19-inch equipment rack:

1. Attach the provided rack-mount brackets to the sides of the switch using the screws supplied with the kit.
2. Align the switch with the rack posts and secure it using appropriate rack screws.
3. Ensure adequate airflow around the switch for proper cooling.

5.2 Power Connection

1. Insert the power cords into the power supply modules at the rear of the switch.
2. Connect the other end of the power cords to a grounded AC power outlet.
3. The switch will power on automatically. Observe the system status LEDs.

5.3 Network Connections

1. Connect Ethernet cables from your network devices (servers, workstations) to the 10/100/1000BASE-T RJ45 ports on the front panel.
2. For uplink connections, insert SFP or SFP+ transceivers into the 1/10 Gigabit Ethernet SFP+ ports and connect fiber optic cables to your core network.

6. Operating Instructions

6.1 Initial Configuration

For initial configuration, connect a console cable from your management workstation to the console port on the switch's rear panel. Use a terminal emulation program (e.g., PuTTY, Tera Term) with the following settings:

• Baud Rate: 9600
• Data Bits: 8
• Parity: None
• Stop Bits: 1
• Flow Control: None

Follow the on-screen prompts to configure basic settings such as IP address, hostname, and management credentials.

6.2 Management Interfaces

The switch can be managed via several interfaces:

• Command Line Interface (CLI): Accessible via console, Telnet, or SSH for advanced configuration.
• Simple Network Management Protocol (SNMP): For network monitoring and management.
• HTTPS: For web-based management (if enabled and configured).

Refer to the Cisco IOS Software Configuration Guides for detailed information on advanced features and configurations.

7. Maintenance

Regular maintenance ensures the longevity and optimal performance of your switch.

7.1 Cleaning

• Periodically clean the exterior of the switch with a soft, dry cloth.
• Ensure ventilation openings are free from dust and obstructions. Do not use liquid cleaners or aerosols.

7.2 Firmware Updates

Regularly check the Cisco support website for the latest firmware updates. Applying updates can improve performance, add new features, and address security vulnerabilities. Follow Cisco's official procedures for firmware upgrades.

7.3 Power Supply Redundancy

The switch supports dual hot-swappable AC power supplies. In case of a power supply failure, the redundant unit will take over seamlessly. Replace faulty power supplies promptly to maintain redundancy.

8. Troubleshooting

This section provides solutions to common issues you might encounter.

For more complex issues, consult the Cisco documentation or contact Cisco Technical Assistance Center (TAC).

9. Specifications

10. Warranty and Support

10.1 Limited Warranty

This Cisco Catalyst 4948E-F switch comes with a 90 days limited warranty. This warranty covers defects in materials and workmanship under normal use. For specific terms and conditions, please refer to the warranty documentation provided with your product or contact your vendor.

10.2 Technical Support

For technical assistance, product documentation, or software downloads, please visit the official Cisco support website: www.cisco.com/support. You may also contact Cisco Technical Assistance Center (TAC) for expert support.