1. Introduction
This manual provides essential information for the installation, operation, maintenance, and troubleshooting of the Cisco Catalyst 1000-48P-4G-L Network Switch. Please read this manual thoroughly before using the device to ensure proper functionality and safety.
2. Product Overview
The Cisco Catalyst 1000-48P-4G-L Network Switch is an enterprise-class, fixed managed Gigabit Ethernet Layer 2 switch designed for small businesses and branch offices. It offers a simple, flexible, and secure networking solution, ideal for critical IoT (Internet of Things) deployments. This switch operates on Cisco IOS Software and features both a command-line interface (CLI) and an intuitive web user interface for management.
Key Features:
- Hardware Configuration: 48 10/100/1000 Gigabit Ethernet ports, 4 SFP+ uplink ports.
- Power: Power over Ethernet Plus (PoE+) budget of 370W with Perpetual PoE+ support, ensuring uninterrupted power to connected PoE devices even during switch reboot.
- Management: Flexible management options via Cisco IOS CLI and/or an intuitive web user interface. Supports central monitoring and configuration of up to 8 switches via a single IP address or with third-party network management tools.
- Security: Enterprise-class security features including native IPv4/IPv6 First Hop Security (FHS) features such as port security, DHCP snooping, and dynamic ARP inspection. These can be easily configured using a single "Auto-Secure" command. Also includes 802.1x support for all connected devices.

Figure 2.1: Cisco Catalyst 1000-48P-4G-L Network Switch (Front View)

Figure 2.2: Cisco Catalyst 1000 Series Switches in a Stack Configuration
3. Setup
3.1 Unpacking and Inspection
Carefully unpack the switch and all included components. Inspect the contents for any signs of damage. If any components are missing or damaged, contact your vendor immediately.
Included Components:
- Cisco Catalyst 1000-48P-4G-L Switch
- Accessory Kit
- 1 printed document (this manual or a quick start guide)
3.2 Physical Installation
The Cisco Catalyst 1000-48P-4G-L switch can be installed on a desktop or mounted in a standard 19-inch equipment rack. Ensure the installation location provides adequate ventilation and is free from excessive heat, dust, and moisture.
- Desktop Installation: Place the switch on a flat, stable surface. Ensure there is sufficient space around the switch for airflow.
- Rack Installation: Use the provided rack-mount brackets from the accessory kit to secure the switch in a standard equipment rack. Follow the instructions in the accessory kit for proper mounting.
3.3 Power Connection
Connect the power cord to the AC power connector on the rear of the switch and then to a grounded electrical outlet. Ensure the power source meets the switch's power requirements.
3.4 Initial Network Connection
Connect a network cable from your computer to any of the Gigabit Ethernet ports on the switch for initial configuration access. Alternatively, use a console cable to connect to the console port for CLI access.
4. Operating the Switch
4.1 Powering On
Once the power cord is connected, the switch will automatically power on. Observe the system LED indicators to confirm successful boot-up.
4.2 Initial Configuration
The switch can be configured using either the Command-Line Interface (CLI) or the intuitive Web User Interface (Web UI).
- CLI Access: Connect to the console port using a terminal emulator. Refer to the Cisco IOS Software documentation for detailed CLI commands.
- Web UI Access: Open a web browser and enter the default IP address of the switch (refer to the quick start guide or Cisco documentation for the default IP). Follow the on-screen prompts to complete the initial setup.
4.3 Connecting Devices
Connect network devices (computers, IP phones, wireless access points, etc.) to the Gigabit Ethernet ports. For Power over Ethernet (PoE+) compatible devices, simply connect them to the PoE+ enabled ports; the switch will automatically provide power.
4.4 Basic Network Management
After initial setup, you can configure VLANs, QoS settings, port security, and other network parameters through the chosen management interface (CLI or Web UI). For advanced configurations, consult the comprehensive Cisco Catalyst 1000 Series documentation.
5. Maintenance
5.1 Firmware Updates
Regularly check the Cisco support website for the latest firmware updates. Keeping the switch firmware up-to-date ensures optimal performance, security, and access to new features. Follow the instructions provided with the firmware update package for the upgrade process.
5.2 Cleaning
Periodically clean the exterior of the switch with a soft, dry cloth. Do not use liquid or aerosol cleaners. Ensure ventilation openings are clear of dust and debris to maintain proper airflow.
5.3 Environmental Considerations
Ensure the switch operates within its specified environmental ranges for temperature and humidity. Avoid placing the switch near heat sources or in direct sunlight. Proper ventilation is crucial for long-term reliability.
6. Troubleshooting
This section provides solutions to common issues you might encounter with your Cisco Catalyst 1000-48P-4G-L Network Switch.
6.1 No Power
- Verify the power cord is securely connected to both the switch and a working electrical outlet.
- Check the power outlet with another device to ensure it is functional.
- Ensure the power supply unit (if external) is properly connected and its indicator light is on.
6.2 No Network Connectivity
- Check the link/activity LEDs on the switch ports and the connected devices. A solid green light usually indicates a good link, while blinking indicates activity.
- Ensure network cables are securely connected and are not damaged.
- Verify IP address configurations on connected devices and the switch.
- If using VLANs, ensure devices are assigned to the correct VLANs.
6.3 PoE+ Device Not Receiving Power
- Ensure the connected device is PoE+ compatible.
- Check the PoE status LED on the switch for the specific port.
- Verify that the total PoE budget (370W) of the switch is not exceeded by all connected PoE devices.
- Try connecting the device to a different PoE+ port.
6.4 Unable to Access Web UI or CLI
- Confirm your computer's IP address is in the same subnet as the switch's management IP.
- If using CLI, ensure correct serial port settings (baud rate, data bits, parity, stop bits).
- Reset the switch to factory defaults as a last resort (consult Cisco documentation for the procedure, as this will erase all configurations).
7. Specifications
| Feature | Specification |
|---|---|
| Model Number | C1000-48P-4G-L (C1000-48P) |
| Switch Type | Network switch |
| Number of Ports | 48 Gigabit Ethernet ports, 4 SFP+ uplink ports |
| PoE Budget | 370W |
| Platform | iOS |
| Data Transfer Rate | 1000 Megabits Per Second |
| Item Weight | 16.25 pounds (7.37 kg) |
| Product Dimensions (LxWxH) | 17.5 x 13.78 x 1.74 inches (44.45 x 35 x 4.42 cm) |
| Manufacturer | CISCO |
| UPC | 889728248587 |
| Color | White |
| First Available Date | October 20, 2020 |
8. Warranty and Support
8.1 Warranty Information
The Cisco Catalyst 1000-48P-4G-L Network Switch comes with an Enhanced Limited Lifetime Warranty. For detailed terms and conditions of this warranty, please refer to the official Cisco warranty documentation or visit the Cisco website.
8.2 Technical Support
For technical assistance, troubleshooting beyond this manual, or to register your product, please visit the official Cisco support website or contact Cisco technical support. Having your product model number (C1000-48P-4G-L) and serial number ready will expedite the support process.
Note: Registering your switch upon receipt will facilitate easier support later on, as advised by experienced users.





