Module 11: Network Design

What is a Cisco Borderless Network?

A framework that connects anyone, anywhere, anytime on any device

What are the 4 principles that borderless networks are built on?

Hierarchical, modularity, resiliency, flexibility

What are the 2 hierarchical network models?

3 tier, 2 tier

What are the different layers of a 3 tier network?

Access, distribution, core

What are the different layers of a 2 tier network?

Access, core/distribution

What does the access layer do?

Provides network access to the user, network edge

What does the distribution layer do?

Aggregating broadcast and layer 3 domains, provides intelligent switching and routing, high availability

What does the core layer do?

The network backbone, aggregator for all distribution layer devices, high availability

What is a failure domain?

An area of the network that is affected when a critical device has issues

What should you reduce the size of?

Failure domains

What 2 things should be considered when building a network?

Scalability and redundancy

What are some popular ways to provide redundancy between network equipment?

Redundant links and multiple links

How can you increase bandwidth?

Link aggregation

How can you expand the access layer?

Wireless

What are some different switch form factors?

Fixed config, modular, stackable

What are some different switch platforms?

Campus, cloud managed, data center

What are some different router platforms?

Branch, network edge, industrial