Distribution layer-Aggregates access layers and provides connectivity to services.

Access layer-Provides workgroup/user access to the network.Modular structuring of the network into small, easy-to-understand elements also facilitates resiliency via improved fault isolation.Ī hierarchical design includes the following three layers: Hierarchical design helps constrain operational changes to a subset of the network, which makes it easy to manage as well as improve resiliency. In flat or meshed network architectures, changes tend to affect a large number of systems. Replication provides an easy way to scale the network as well as a consistent deployment method. Imagine you have a junior network engineer who takes care of port security on the access layer, with a modular design t is easier to grant him the rights to perform the specific functions without the need for access to a hierarchy too advanced for his level of technical ability.Īnother important reason for modularity in network design is that it allows you to create design elements that can be replicated throughout the network. Breaking the design up into layers allows each layer to focus on specific functions which is what we would want our network to do, which simplifies the design and provides simplified deployment and management. The Hierarchical Design Model architecture uses a hierarchical design model to break the design up into modular groups or layers. Let’s take a brief moment to breakdown the Hierarchical Design Model. The reason for such could be down to how your network has been designed hierarchically. If you have ever wanted to know how to configure ip helper on a cisco switch for a number of vlans then this article may be the most helpful you might find regarding the appropriate steps required to successfully architect your desired network.

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