Carrier Class QoS

Service Concentration Switches from World Wide Packets implement true carrier-class (“hard”) QoS in a cost effective and scalable standard Ethernet environment. Every Service Concentration Switch switch supports a flexible QoS implementation that permits a wide range of traffic types and rates to be delivered over a single access infrastructure without interference or degradation.

Quality of Service guarantees in the Service Concentration Switch platforms are based on the ability to track creation, implementation, enforcement, and monitoring of all QoS parameters. Tracking is based on:

• Flexible QoS implementation, based on service mapping and service level definition (including Committed Information Rate, Excess Information Rate, and Priority)
• Sophisticated congestion handling based on Two-rate, Three-Color Marking (trTCM)
• Automated service provisioning resulting in more comprehensive deployment of QoS while significantly lowering the cost of implementing QoS

The QoS implementations in Service Concentration Switches enables network operators to allow both point-to-point and multipoint residential and business services in both wireline and wireless deployments. These capabilities enable greater revenue generation by utilizing available network resources efficiently while improving customer relations due to enforceable and reliable Service Level Agreements (SLAs).

Figure — Carrier Class QoS

Guaranteed bandwidth for SLAs based on carrier-class programmable and hard QoS can be provisioned explicitly and independently and can consist of any combination of minimum guaranteed bandwidth, burstable bandwidth, and jitter and delay tolerance.

• 8 hardware queues per port
• 64 Kbps granularity
• Protection of management, routing and revenue-oriented traffic
• Protects both Unicast and Multicast Traffic
• Flexible service mapping:
  • VLAN
  • Source port or source link aggregation group
  • Destination port or destination link aggregation group
  • IEEE 802.1D priority
  • Port (TCP, UDP, etc)
  • Differentiated Services Code Point (DSCP)
  • Excess and Committed Information Rate (EIR, CIR, EBS, CBS)

Continue

• Introduction
• Configuration Flexibility
• Common LE-OS Operating System
• Carrier Class QoS
• Robust Multicast Support
• Reliability and Resiliency
• Carrier Class OAM

PDS-0008-001 Rev A.1