Hot-Potato vs. Cold-Potato

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Presentation transcript:

Hot-Potato vs. Cold-Potato

Hot-Potato In hot-potato routing, an ISP hands off traffic to a downstream ISP as quickly as it can Hot-potato routing = route to closest exit point when there is more than one route to destination

Cold-Potato Cold-potato routing: an ISP carries traffic as far as possible on its own network before handing it off to a downstream ISP Two different policies Hot-potato case: The goal is to get rid of traffic as soon as possible so as to minimize the amount of work that the ISP's network needs to do Cold-potato case: The goal is carry traffic on the ISP's network to the extent possible so as to maximize the control that the ISP has on the end-to-end quality of service In general, an ISP's routing policy would lie somewhere in between the extremes of hot-potato and cold-potato routing

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