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7 February, 04:17

Many networks are set up using a hierarchical architecture to create a "backbone" network. In this system, several connected routers act as the backbone and many smaller LANs are connected to the backbone. This is much different than having a system where every router is connected to every other router. What are the benefits of the hierarchical approach to setting up a network?

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  1. 7 February, 05:53
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    For example with the hierarchical network design of Cisco (three-layer) it is worth mentioning the following benefits:

    - This type of infrastructure is highly reliable

    - The complex problem regarding network design is broken into smaller and manageable areas.

    - Improved access, access, core layers and distribution

    - The hierarchy provides specific functions important in defining its role within the whole network.

    Regarding the access layers in the hierarchy the following are core benefits:

    - Layer 2 switching

    - Virtual access control lists (VACLs)

    - Power over Ethernet (PoE) and auxiliary VLANs for VoIP

    - Spanning tree

    - High availability

    - Port security

    - Address Resolution Protocol (ARP) inspection
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