Cisco Hierarchical Model – Practical Application
The above example illustrates common block types:
• User block – containing end users
• Server block – containing the resources accessed by users
• Edge block – containing the routers and firewalls that connect users
to the WAN or Internet
Each block connects to each other through the core layer, which is often
referred to as the core block. Connections from one layer to another should
always be redundant.
A large campus environment may contain multiple user, server, or edge
blocks. Limiting bottlenecks and broadcasts are key considerations when
determining the size of a block.
The above example illustrates common block types:
• User block – containing end users
• Server block – containing the resources accessed by users
• Edge block – containing the routers and firewalls that connect users
to the WAN or Internet
Each block connects to each other through the core layer, which is often
referred to as the core block. Connections from one layer to another should
always be redundant.
A large campus environment may contain multiple user, server, or edge
blocks. Limiting bottlenecks and broadcasts are key considerations when
determining the size of a block.
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