Tag Archives: ISP

Hot and Cold Potato in ISP Kingdom

Some ISP’s tend to use different strategies or priorities in handling traffic across Backbone, some maybe because running out of capacity or by policy. In hot-potato routing, an ISP hands off traffic to a downstream ISP as quickly as it can “closest exit routing”. In opposite way Cold-potato routing ISP carries traffic as far as possible on its own network before deliver it to a downstream ISP “best exit routing”. In general, an ISP’s routing policy would follow an hot-potato or cold-potato routing.

Following a small diagram with an Cold-potato (blue) and Hot-potato (red) flows