What are the three tiers of the hierarchical model in a borderless switched network?

It allows organizations to support a borderless network that can connect anyone, anywhere, anytime, on any device; securely, reliably, and seamlessly. It enables different network elements to work together, and allows users to access resources from any place, at any time, while providing optimization, scalability, and security.

Sets found in the same folder

The Hierarchical internetworking model is a three-layer model for network design first proposed by Cisco. It divides enterprise networks into three layers: core, distribution, and access layer.

Access layer[edit]

End-stations and servers connect to the enterprise at the access layer. Access layer devices are usually commodity switching platforms, and may or may not provide layer 3 switching services. The traditional focus at the access layer is minimizing "cost-per-port": the amount of investment the enterprise must make for each provisioned Ethernet port. This layer is also called the desktop layer because it focuses on connecting client nodes, such as workstations to the network.

Distribution layer[edit]

The distribution layer is the smart layer in the three-layer model. Routing, filtering, and QoS policies are managed at the distribution layer. Distribution layer devices also often manage individual branch-office WAN connections. This layer is also called the Workgroup layer.

Core layer[edit]

The core is the backbone of a network, where the internet(internetwork) gateway are located. The core network provides high-speed, highly redundant forwarding services to move packets between distribution-layer devices in different regions of the network. Core switches and routers are usually the most powerful, in terms of raw forwarding power, in the enterprise; core network devices manage the highest-speed connections, such as 10 Gigabit Ethernet or 100 Gigabit Ethernet.

See also[edit]

• Multi-tier architecture
• Service layer

References[edit]

• Khalid Raza, Mark Turner (2002), Cisco Network Topology and Design, Cisco Press
• High Availability Campus Network Design, retrieved 2022-04-05

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  How do switched networks support small to medium-sized businesses? By adding flexibility , traffic management and additional features like quality of service, additional security, support for wireless devices, and support for new technologies such as telephony and mobility services.

• How has the convergence of data, voice, and video affected switched networks? It has led to the development of Borderless Network architecture which allows organizations to connect to anyone , anywhere, anytime, and on any device. This is done securely, reliably, and seamlessly. It is designed to address IT and business challenges like supporting the converged network and changing work patterns.

• What benefits are provided by creating networks based on a structured hierarchical design model? They ensure maximum availability, flexibility, security, and manageability. They also deliver on current requirements and future required services and technologies.

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• What are the two most commonly used Cisco hierarchical design models? They are two time tested and proven models, which are the 2 tiered model and the three tiered model.

• What are the layers found in the Cisco hierarchical design model? The three critical layers are access, distribution, and core layers. Each layer can be seen as a well defined, structured module. Each layer has specific roles and functions.

-What switch form factors are available? Form factors include Fixed Configuration, Modular Configuration, and stackable configuration. Fixed configuration do not support features or options that did not originally come with the switch. Modular offers more flexibility and allows for the installation of modular line cards, like expansion slots in a pc. Stackable are interconnected using a special cable and work like one switch.

-What is the difference between a collision domain and a broadcast domain? The network segments that share the same bandwidth between devices are know as Collision Domains, since when two or more devices within that same segment try to communicate at the same time, collisions may occur. A collection of interconnected switches forms a broadcast domain. A network layer device such as a router can divide a layer 2 broadcast domain.

What are the three tiers of the hierarchical model?

What is borderless switched network?

What is hierarchical model in networking?

What is the name of the layer in the Cisco Borderless switched network design that is considered to be the backbone used for high speed connectivity and fault isolation?