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MODULE 11: NETWORK DESIGN - Coggle Diagram
MODULE 11: NETWORK DESIGN
11.1 Hierarchical Networks
11.1.4 Hierarchy in the Borderless Switched Network
11.1.5 Access, Distribution, and Core Layer Functions
Core Layer
The core layer is the network backbone. It connects several layers of the campus network. The core layer serves as the aggregator for all of the distribution layer devices and ties the campus together with the rest of the network. The primary purpose of the core layer is to provide fault isolation and high-speed backbone connectivity.
Access Layer
The access layer represents the network edge, where traffic enters or exits the campus network. Traditionally, the primary function of an access layer switch is to provide network access to the user. Access layer switches connect to distribution layer switches, which implement network foundation technologies such as routing, quality of service, and security.
11.1.3 Borderless Switched Networks
11.1.6 Three-Tier and Two-Tier Examples
11.1.2 The Need to Scale the Network
11.1.7 Role of Switched Networks
11.4 Router Hardware
11.4.2 Cisco Routers
Network Edge Routers
Service Provider Routers
Branch Routers
Industrial
11.4.3 Router Form Factors
Cisco ASR 9000 and 1000 Series Aggregation Services Routers
Cisco Network Convergence System 5500 Series Routers
Cisco 900 Series
Cisco 800 Industrial Integrated Services Router
11.4.1 Router Requirements
Switches are not the only component of a network that come with a variety of features. Your choice of router is another very important decision. Routers play a critical role in networking by connecting homes and businesses to the internet, interconnecting multiple sites within an enterprise network, providing redundant paths, and connecting ISPs on the internet. Routers can also act as a translator between different media types and protocols. For example, a router can accept packets from an Ethernet network and re-encapsulate them for transport over a serial network.
11.3 Switch Hardware
11.3.1 Switch Platforms
Campus LAN Switches
Cloud-Managed Switches
Data Center Switches
Service Provider Switches
Virtual Networking
11.3.2 Switch Form Factors
Fixed configuration switches
Modular configuration switches
Stackable configuration switches
Thickness
11.3.3 Port Density
Cisco Catalyst 3850 Switches
Catalyst 9400 Switch
11.3.4 Forwarding Rates
Forwarding rates define the processing capabilities of a switch by rating how much data the switch can process per second. Switch product lines are classified by forwarding rates. Entry-level switches have lower forwarding rates than enterprise-level switches. Forwarding rates are important to consider when selecting a switch.
11.3.5 Power over Ethernet
Switch
IP Phone
WAP
Cisco Catalyst 2960-C
11.3.6 Multilayer Switching
11.3.7 Business Considerations for Switch Selection
11.2 Scalable Networks
11.2.1 Design for Scalability
11.2.2 Plan for Redundancy
11.2.3 Reduce Failure Domain Size
11.2.4 Increase Bandwidth
11.2.5 Expand the Access Layer
11.2.6 Tune Routing Protocols
