Architecture- Enterprise network design such as Tier 2, Tier 3, and Fabric Capacity planning

Fabric capacity training

the process of planning and sizing the fabric infrastructure to meet the current and future needs of the network. This includes determining the number of switches, the speed of the links, and the type of fabric topology.

The fabric capacity plan should include the following:

A list of the devices that will be in the fabric The speed of the links between the devices The type of fabric topology The expected growth of the network The budget

Here are some of the benefits of fabric capacity training:

It can help to ensure that the fabric infrastructure is able to support the traffic demands of the network. It can help to prevent performance problems, congestion, and outages. It can help to save money by avoiding the need to overprovision the fabric infrastructure. It can help to improve the reliability of the network. It can help to make the network more scalable.

Access tier:

The access tier is the layer that provides connectivity to the end users. It includes switches that connect to the user devices, such as computers, printers, and phones. The access tier should be designed to be scalable and secure.

Core tier:

The core tier is the central part of the network. It provides high-speed connectivity between the different parts of the network. The core tier should be designed to be highly reliable and secure.

Distribution tier:

The distribution tier is responsible for routing traffic between the core tier and the access tier. It also provides services such as security, Quality of Service (QoS), and access control. The distribution tier should be designed to be highly available and secure.

Modularity:

The network should be designed in a modular way, with each module having a specific purpose. This makes it easier to manage and troubleshoot the network, and it also makes it easier to add or remove modules as needed.

Resiliency

The network should be designed to be resilient to failures. This means that there should be multiple paths between any two points in the network, so that if one path fails, traffic can still flow

Scalability:

The network should be designed to be scalable, so that it can be easily expanded to accommodate growth. This means using a modular design and using scalable hardware and software components.

Security

The network should be designed to be secure from unauthorized access. This means using strong authentication methods, encrypting traffic, and implementing firewalls and intrusion detection systems.

Hierarchy:

The network should be organized in a hierarchical way, with different layers performing different functions. This helps to improve performance and scalability, and it also makes it easier to secure the network.

There are a number of factors that need to be considered when planning fabric capacity, including:

The number of devices in the fabric The type of traffic that will be carried on the fabric The expected growth of the network The budget

Hybrid network design:

This is a combination of the tiered and fabric network designs. It uses the best features of both models to create a network that is highly available, scalable, and secure.

Tiered network design

This is a common model for large enterprise networks. It divides the network into three tiers: the core, the distribution, and the access tiers. The core tier provides high-speed connectivity between the different parts of the network. The distribution tier provides routing and switching services for the different departments or business units in the enterprise. The access tier provides connectivity to the end users.

Fabric network design:

This is a newer model for enterprise networks. It uses a fabric of switches that are interconnected in a loop. This provides high availability and scalability.