Podcast
Questions and Answers
Quality of Service (QoS) is associated with IP QoS, type of service (ToS), and Frame Relay committed information rate (CIR).
Quality of Service (QoS) is associated with IP QoS, type of service (ToS), and Frame Relay committed information rate (CIR).
True
Differentiated services (DiffServ) is a type of QoS that supports traffic flows on an individual, end-to-end basis.
Differentiated services (DiffServ) is a type of QoS that supports traffic flows on an individual, end-to-end basis.
False
Service-Level Agreements (SLA) are a type of performance mechanism used to prioritize traffic.
Service-Level Agreements (SLA) are a type of performance mechanism used to prioritize traffic.
False
Resource Control (RC) is used to change the network from a cost center to profitability.
Resource Control (RC) is used to change the network from a cost center to profitability.
Signup and view all the answers
Policies are a subset of Quality of Service (QoS) mechanisms.
Policies are a subset of Quality of Service (QoS) mechanisms.
Signup and view all the answers
Performance Architecture is used to merge multiple traffic types over a common network infrastructure.
Performance Architecture is used to merge multiple traffic types over a common network infrastructure.
Signup and view all the answers
Integrated services (IntServ) aggregates traffic flows on a per-hop basis.
Integrated services (IntServ) aggregates traffic flows on a per-hop basis.
Signup and view all the answers
Quality of Service (QoS) is used to improve the overall performance of a network.
Quality of Service (QoS) is used to improve the overall performance of a network.
Signup and view all the answers
Performance Architecture is used to differentiate customers for multiple levels of service.
Performance Architecture is used to differentiate customers for multiple levels of service.
Signup and view all the answers
SLA is used to measure the temporal characteristics of traffic flows.
SLA is used to measure the temporal characteristics of traffic flows.
Signup and view all the answers
Study Notes
Performance Architecture
- Describes how user, application, device, and network requirements for performance (capacity, delay, and RMA) will be met within the planned network.
Objectives
- Learn what performance means in a network, including descriptions of mechanisms to achieve performance.
- Determine the relationships among performance mechanisms and between performance and other architectural components.
- Develop the performance architecture and set goals for performance.
Background
- Performance is the set of levels for capacity, delay, and RMA in a network.
- Desirable to optimize these levels for one or more sets of traffic flows, based on groups of users, applications, and/or devices.
- Performance architecture includes mechanisms to configure, operate, manage, provision, and account for resources in the network that support traffic flows.
Importance of Performance Architecture
- Determine the performance goals of a network.
- Improve overall network performance (e.g., response times and throughput).
- Support particular groups of users or applications.
- Control resource allocation for accounting, billing, and/or management purposes.
Components of Performance
- Controlling traffic inputs to the network (admission and rate controls).
- Adjusting the baseline performance of the network (traffic or capacity engineering).
- Controlling all or part of the network for delivery of specific services (prioritizing, scheduling, and conditioning traffic flows).
- Implementing a feedback loop to users, applications, devices, and management to modify controls as necessary.
Developing Goals for Performance
- Determine if performance mechanisms are necessary for the network.
- Identify the problems to be solved or goals to be achieved by adding performance mechanisms.
- Ensure that performance mechanisms are sufficient for the network.
- Start with simple implementations and work towards more complex architectures.
Performance Mechanisms
- Quality of Service (QoS).
- Resource Control (RC) (prioritization, traffic management, scheduling, and queuing).
- Service-Level Agreements (SLA).
- Policies.
- These mechanisms provide the means to identify traffic flow types, measure their temporal characteristics, and take various actions to improve performance.
Quality of Service (QoS)
- Determining, setting, and acting upon priority levels for traffic flows.
- Associated with IP QoS (including MPLS), type of service (ToS), and Frame Relay committed information rate (CIR).
- Two standard types of QoS:
- Differentiated services (DiffServ, or DS): aggregating traffic flows on a per-hop basis based on traffic behavior.
- Integrated services (IntServ, or IS): supporting traffic flows on an individual, end-to-end basis.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Learn about network performance architecture, including mechanisms to achieve performance and setting goals for performance. This quiz covers performance requirements, capacity, delay, and reliability.
