IP Cores

High-Speed Interconnect

• Interlaken
• 40G/100G High-Speed Ethernet

Classification

• Network Search Engine
• CAM Core

Traffic Management

• Traffic Policing
• DDR2 SDRAM Packet Buffer

Traffic Policer IP Cores

Overview

Sarance᾿s Traffic Policing algorithm implements policing as described by the IETF RFCs 2697 and 2698.

RFC2697 describes a single rate, three color (SrTCM) marker based on a Committed Information Rate (CIR), and two associated burst sizes: Committed Burst Size (CBS), and Excess Burst Size (EBS). A packet is marked green if it doesn᾿t exceed the CBS, yellow if it lies between the CBS and EBS, and red if it exceeds the EBS. 

RFC2698 describes a two rate, three color (TrTCM) marker based on a Committed Information Rate (CIR), a Peak Information Rate (PIR), and two associated burst sizes: Committed Burst Size (CBS), and Peak Burst Size (PBS). A packet is marked red if it exceeds the PIR; otherwise it is marked yellow if it exceeds the CIR and green if it does not exceed the CIR.

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