route summarization 20.0.0.0/8 or /14?

James777James777 Posts: 20Member ■□□□□□□□□□
Hi all,

one of Chris Bryant's videos has the following route summarization example:
R2 has loopback21 (20.1.1.1/24) and loopback22 (20.2.1.1/24)


and RIP summarizes the two addrs as 20.0.0.0/8


video:https://www.udemy.com/ccna-on-demand-video-boot-camp/learn/v4/t/lecture/5816672?start=0but

But from my understanding, these 2 addrs should be summarized as 20.0.0.0/14, since from the binaries:
00010100.00000001.00000001.00000001 (20.1.1.1)
00010100.00000010.00000001.00000001 (20.2.1.1)

which one is correct?

Thanks in advance.

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