Digital Subscriber Line (DSL) services provide high-speed, low-cost Internet access. They fit nicely between dialup and dedicated access services in terms of both price and speed. DSL service types vary based on which DSL technology is employed. The term xDSL is commonly used to refer to generic DSL services, where x can represent any of a number of different encoding techniques used across the physical line at Layer 1. Table 2-1 lists some of the more common types of DSL tec..
Rate-Limiting and Committed Access Rate
Rate-limiting controls the volume of data entering the network. It is generally deployed on routers that aggregate customer links, and configured parameters may be used as the basis of charging for the link. In particular, if the capacity of the access circuit exceeds the network capacity required by the customer, rate-limiting may restrict a customer's use of the network to the agreed level. Cisco offers three traffic-shaping and policy tools: Generic Traffic S..
806. QoS Operation on Cisco APs
When you enable QoS, the access point queues packets based on the Layer 2 class of service value for each packet. The access point applies QoS policies in this order: • Packets already classified. When the access point receives packets from a QoS-enabled switch or router that already has classified the packets with nonzero 802.1Q/P user_priority values, the access point uses that classification and does not apply other QoS policy rules to the packets. An ..
Traditional WLAN architecture centers around the wireless access point. Each AP serves as the central hub of its own BSS, where clients located with the AP cell gain an association. The traffic to and from each client has to pass through the AP to reach any other part of the network. Notice that even though an AP is centrally positioned to support its clients, it is quite isolated and self-sufficient. Each AP must be configured individually, although many APs might be config..
LFI is part of Cisco's QoS features and solutions for addressing the diverse requirements of voice, video, and data applications on the network. Interactive and real-time delay-sensitive traffic, such as voice, is susceptible to increased latency when it is transported together with normal data traffic. In many situations, the latency issue can become critical, especially when the real-time traffic is delivered over slow bandwidth links. On these slower bandwidth links, the n..
