May
22
This blog post reviews and compares two most common types of traffic contracts - single rate and dual-rate agreements and their respective implementations using single-rate and dual-rate (two-rate) policing. We are also going to briefly discuss effects of packet remarking on end-to-end throughput and finally look at some examples of IOS configuration. What is Traffic Contract Service-providers network topology typically follows core/aggregation model, where network core has meshed topology and... Read More
Dec
12
Many people have problems understanding the meaning of Bc (committed burst) used with traffic policing. Everyone seems to know the “magic” formula (Bc=1,5sec*CIR) but have a vague understanding of the reasons behind it. Let's clear the confusion and see what Bc really affects when it comes to policing. Averaging and Smoothing Imagine you're driving a car and want to find out your speed. In order to do this, you need to count the time (T) it takes you to pass the distance (S). The speed is then... Read More

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