WAN Aggregator QoS Design

This section discusses WAN QoS considerations and designs, including the following: • Slow-speed (≤ 768 kbps) WAN link design • Medium-speed (768 kbps to T1/E1 speed) WAN link design • High-speed (> T1/E1 speed) WAN link design

QoS Design

QoS Design Principles: One design principle is to always enable QoS policies in hardware rather than software whenever a choice exists as QoS in software places incremental loads on CPU. Classification and Marking Principles: In order to provide end-to-end Differentiated Services and PHBs, Cisco recommends to classify and mark applications as close to their sources …

Continue reading ‘QoS Design’ »

QoS Requirement for Applications

QoS Requirements for Voice Voice Bearer Traffic: Voice quality is directly affected by all three QoS quality factors: loss, latency and jitter. Cisco DSP can use predictor algorithms to compensate for up to 30ms loss of voice samples.  So, two or more voice packets loss will cause noticeable voice quality degradation. A summary of the …

Continue reading ‘QoS Requirement for Applications’ »

Quality of Service

Cisco IOS QoS features are a solution for delay, jitter, packet loss and bandwidth utilization in the IP network. Cisco IOS features including below toolsets; Classification and Marking tools: allow traffic to be partitioned into multiple priority levels, or classes of service based on the input interface, ACLs, policy defined or NBAR for layer 7 …

Continue reading ‘Quality of Service’ »