It is very important to know the types of switches in networks and when to use each type?

It is very important to know the types of switches in networks and when to use each type?

If we talk in general about network switches and their types, they vary between chassis-based and fixed configuration, and each type has its own features and uses according to the needs of the network.
Saleh Hassan on LinkedIn

1. Chassis-based Switches:

These switches like the Catalyst 9600 are larger and are usually intended for very large networks. The most important feature is that it’s a modular, meaning you can add or remove ingredients as you need. For example, if your network needs increase over time, you don’t need to change the entire switch, but add additional line cards or modules. In addition, these switches support high redundancy, meaning if a component fails, the network continues to work on the backup components.

Very suitable if you run a large data center or a huge network that needs scalability.

2. Fixed Configuration Switches:

Like the Catalyst 9500 or 3850, these switches have a static configuration, which means you can’t add additional hardware. Suitable for small to medium networks that do not require large future expansion. These switches are often cheaper and easier to set up and operate.

For example, fixed switches are used a lot in the lower layers of the network, such as access layer or distribution layer, because they provide excellent performance and high efficiency without the modularity complexity that larger networks need.

3. Stackable Switches:

Some switches, such as the Catalyst 9300, are fixed but support stacking, meaning you can connect multiple switches together and manage them as a single unit. This feature is nice if you need the flexibility to add more ports without the need for a completely new switch.

4. Managed vs. Unmanaged Switches:

• Managed Switches:
It gives you more flexibility in controlling the network, you can program VLANs, QoS, and other features you need to ensure stable and safe performance.

• Unmanaged Switches:
These are simpler, just connect the devices and each other, and what you need management or complex setup. Suitable for small networks that do not need large control.

5. Layer 2 vs. Layer 3 Switches:

• Layer 2 Switches:
It mainly works on data link layer and deals with MAC addresses only. Suitable for connecting devices to the network without handling routing.

• Layer 3 Switches:
Combines switch and router features, and supports routing over IP addresses. Ideal if you need to manage traffic between multiple local networks or VLANs.

Butter:

• Chassis-based
Excellent for large networks that need scalability and scalability over time.

• Fixed switches
Best for small to medium networks that require simple setup and stable performance.
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• Stackable switches
If you need something in the middle between the two,
It gives you flexibility without complexity.

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Source: LinkedIn

Credits: Mr. Saleh H.’s Post