Carrier Class QoS

The LE-311v implements true carrier-class (“hard”) QoS in a cost-effective and scalable standard Ethernet environment. The flexible QoS implementation in the LE-311v permits a wide range of traffic types and rates to be delivered over a single access infrastructure without interference or degradation.

QoS guarantees in the LE-311v 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 (CIR), Excess Information Rate (EIR) and priority)
• Sophisticated congestion handling based on Two-rate, Three-color marking (Tr Tcm)
• Automated service provisioning resulting in more comprehensive deployment of QoS while significantly lowering the cost of implementing QoS

The QoS implementation in the LE-311v 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 — LE-311v carrier class QoS

The LE-311v supports guaranteed bandwidth for SLAs based on carrier-class programmable QoS that can be provisioned explicitly and independently based on:

• 8 hardware queues per port
• 64 Kbps granularity
• Protection of management, routing and revenue-oriented traffic
• Protects both Unicast & 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
• Provider Backbone Bridging (PBB-TE)
• MPLS Services
• Proven LE-OS Operating System
• Carrier Class QoS
• Reliability and Resiliency
• Advanced Security
• Carrier Class OAM

PDS-0003-001 Rev B.1