


Below, there is an example topology that contains four routers from different cities. We have learned what is Route Summarization. And this reduces the CPU usage and the required time for routing. But when we use summarize routes, we reduce routing table size. If route tables have too much routes, this needs more time. So, one of the reasons of using Route Summarization is reducing bandwidth usage.Īnother reason of using Route Summarization is the CPU usage during routing on route tables. But if we think on the routes in the world, this bandwidth consumption reaches a very high value. This is not a problem for small number of routes.
#Summary route calculator update
When we advertise routes, we need an update packet and this update packet size increases with every new route. Route Summarization is basically advertising many routes into one route. Instead of advertising every route, we use Route Summarization. So, we do not advertise every route by the routers not to cause any overflow on these systems. But this advertisement capacity is limited. There are a lot of routes on internet and these routes are advertised by routers.
