CCNP ENCOR Certification Cram Notes : Architecture

The integration between the traditional campus and SD-Access can be achieved through the use of Fabric Edge Nodes (FEN), which can provide connectivity to both the SD-Access fabric and the traditional campus infrastructure. The FENs can enforce access policies and provide secure connectivity to both environments, ensuring that the security and policy requirements of the organization are met.

In summary, the Cisco SD-Access solution provides end-to-end segmentation and policy-based automation for enterprise networks. It uses a centralized policy engine and distributed intelligence to enforce policies and automate network operations. SD-Access can coexist with the existing network infrastructure, allowing organizations to migrate to SD-Access gradually and achieve enhanced security and automation capabilities.

1.6 Describe concepts of wired and wireless QoS

1.6.a QoS Components:

Quality of Service (QoS) is a set of techniques used to manage network traffic and ensure that critical applications and services receive the necessary bandwidth and quality of service. Wired and wireless networks can both benefit from QoS techniques, which include the following components:

Classification: This component involves identifying traffic flows based on their source, destination, protocol, or application. It allows network administrators to differentiate between different types of traffic and apply QoS policies accordingly.

Marking: This component involves assigning traffic flows to specific classes of service, which can be used to prioritize traffic and ensure that critical applications and services receive the necessary bandwidth and quality of service.

Queuing: This component involves managing the order in which traffic is transmitted across the network. Queuing techniques can be used to prioritize traffic based on its class of service, ensuring that critical traffic is transmitted first.

Policing: This component involves limiting the amount of traffic that can be transmitted across the network. Policing techniques can be used to ensure that bandwidth is fairly distributed across different types of traffic.

1.6.b QoS Policy

QoS policies are used to configure and enforce QoS techniques across the network. A QoS policy typically consists of the following elements:

Traffic classification: This element involves identifying traffic flows based on their source, destination, protocol, or application.

Marking: This element involves assigning traffic flows to specific classes of service, which can be used to prioritize traffic and ensure that critical applications and services receive the necessary bandwidth and quality of service.

Queuing: This element involves managing the order in which traffic is transmitted across the network. Queuing techniques can be used to prioritize traffic based on its class of service, ensuring that critical traffic is transmitted first.

Policing: This element involves limiting the amount of traffic that can be transmitted across the network. Policing techniques can be used to ensure that bandwidth is fairly distributed across different types of traffic.

Congestion management: This element involves managing network congestion by controlling the rate at which traffic is transmitted across the network.

Shaping: This element involves smoothing the traffic flow by controlling the rate at which traffic is transmitted across the network.

Thus, QoS is a set of techniques used to manage network traffic and ensure that critical applications and services receive the necessary bandwidth and quality of service. QoS components include classification, marking, queuing, and policing. QoS policies are used to configure and enforce QoS techniques across the network and typically consist of traffic classification, marking, queuing, policing, congestion management, and shaping.