The Cisco Catalyst 3750G-48TS Switch is a 48-port, fixed-configuration, stackable switch that runs the Cisco IOS operating system. It supports 10/100/1000BASE-T and Gigabit Ethernet connectivity and can be stacked with other 3750G switches to provide a scalable solution for network environments. Additionally, it supports advanced features such as Quality of Service (QoS), security, and EnergyWise technology to help manage energy consumption.

What is a Cisco Catalyst 3750G?

A Cisco Catalyst 3750G is a series of network switches developed by Cisco Systems. These switches are designed for use in enterprise-level networks and offer a range of features such as advanced security, Quality of Service (QoS), and Power over Ethernet (PoE) capabilities. They also support stacking, allowing multiple switches to be connected together and managed as a single unit, increasing the number of available ports and providing additional redundancy. The 3750G is a member of the Cisco Catalyst 3750 series and is no longer in production as it has been replaced by newer models.

Is the Cisco 3750 a Layer 3 switch?

The Cisco Catalyst 3750G is a Layer 2 switch, which means it operates primarily at the Data Link Layer (Layer 2) of the OSI model. It is designed to handle the switching and forwarding of data packets based on their MAC addresses and does not have the capability to route packets based on IP addresses (Layer 3) like a Layer 3 switch.

However, it has the ability to support some advanced Layer 3 features, like static routing or IP services, which allows it to work in some specific use cases and environments where routing is done by another device.

It’s important to note that the newer models in the Cisco Catalyst 3750 series, like the 3750X, 3750V2, and 3750E, are also Layer 2 switches, but they have more advanced feature set and support for newer technologies.

Is Cisco 3750G PoE?

The Cisco Catalyst 3750G is not a Power over Ethernet (PoE) enabled switch. The switch does not have the capability to power devices connected to it over the Ethernet cables. However, it does support PoE pass-through, which means it can forward PoE power from an upstream device to downstream devices that support PoE. This allows the switch to be used in a network with other PoE-enabled devices, such as IP phones or wireless access points.

It’s important to note that the newer models in the Cisco Catalyst 3750 series, like the 3750X, 3750V2, and 3750E do have PoE capabilities. 3750X and 3750E support PoE+ (IEEE 802.3at) and 3750V2 support PoE (IEEE 802.3af)

Specification of Cisco Catalyst 3750G

The Cisco Catalyst 3750G is a fixed-configuration, stackable Gigabit Ethernet switch that provides enterprise-class intelligent services for branch offices and wiring closets. It has the following specifications:

• 24 or 48 10/100/1000 Ethernet ports
• 2 or 4 SFP-based Gigabit Ethernet ports
• StackWise stacking technology for simplified management and scalability
• Cisco IOS Software with advanced QoS, security, and management features
• Energy-efficient Ethernet (EEE) and Cisco EnergyWise technology for power savings
• Redundant, modular power supplies and fans
• Optional network modules for uplink flexibility
• 1RU form factor

This switch is designed for branch office environments where a compact, scalable, and reliable solution is needed. It provides advanced features such as Power over Ethernet Plus (PoE+), which allows the switch to power devices such as IP phones and wireless access points, and a range of security features such as advanced QoS, access control lists, and Cisco TrustSec for secure access to network resources.

Where Cisco Catalyst 3750G Used

The Cisco Catalyst 3750G is typically used in branch office environments as a fixed-configuration, stackable Gigabit Ethernet switch. It is designed to provide enterprise-class intelligent services for branch offices and wiring closets, such as advanced Quality of Service (QoS), security, and management features. It is well suited for environments that require a compact, scalable, and reliable network solution.

Some common use cases for the Cisco Catalyst 3750G include:

• Providing network connectivity for IP telephony, wireless access points, and other devices that support Power over Ethernet (PoE)
• Implementing advanced QoS to ensure that critical applications such as voice and video have sufficient bandwidth
• Implementing security features such as access control lists and Cisco TrustSec to secure access to network resources
• Supporting network modules for uplink flexibility and redundancy
• Supporting StackWise stacking technology for simplified management and scalability.

In general, it is suitable for small to medium-sized businesses, enterprise branch offices, or any organization that needs a reliable and high-performance network solution that can be easily managed and scaled.

How to Choose the Right Cisco Switch for Your Needs

Choosing the right Cisco switch for your needs depends on several factors. Including the size and complexity of your network, the types of devices and applications that will be running on the network, and your budget. Here are some things to consider when selecting a Cisco switch:

1. Number of Ports: Consider the number of devices that will be connected to the switch. As well as the types of ports that are required (e.g. Gigabit Ethernet, SFP, PoE).
2. Layer 2 or Layer 3 Switch: Layer 2 switches are primarily used for LAN connectivity. While Layer 3 switches are more suitable for larger, more complex networks that require routing capabilities.
3. Power over Ethernet (PoE) support: If you plan to power devices such as IP phones. Wireless access points, or security cameras via the switch, look for a switch that supports PoE.
4. Advanced features: If you require advanced features such as Quality of Service (QoS), security, or energy efficiency. Look for a switch that supports those features.
5. Scalability and redundancy: Consider the scalability and redundancy requirements of your network. If you plan to expand your network in the future or require redundancy. Look for a switch that supports stackable or modular designs.
6. Form factor: Consider the form factor of the switch. Such as rack-mountable or desktop, and whether it will fit in the space you have available.
7. Budget: Determine your budget and look for a switch that fits your requirements within that budget.

It’s also important to check the specifications of the switch and compare them with your needs. As an example, the Cisco Catalyst 3750G series is a good option for branch office environments. That require advanced features, PoE support, and stackable design. On the other hand, the Cisco Meraki MS series is a cloud-managed switch. Suitable for organizations that require easy management, security, and scalability.

It is also a good idea to consult with a Cisco partner or reseller. As they can help you evaluate your specific needs and recommend the best solution for your network.