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How to Configure a Route Summarization or Supernetting

SpiderTip
SpiderTip
Posted: 2017-10-05

Route summarization or supernetting is process of reducing number of routes on a router by summarizing similar networks into single subnet.

For example, the four networks below have a range of IP addresses from 10.0.0.1 to 10.0.3.255.

ϲ.0.0.0/24
ϲ.0.1.0/24
ϲ.0.2.0/24
ϲ.0.3.0/24

Instead of creating a route for each network on non directly connected router,
you can summarize it as single network 10.0.0.0/22 which also gives same IP address range.

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