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Webcast-Catalyst9k
New Member

conflict understanding of summarization

10.1.32.64/26 
10.1.32.128/26 
summarization = 10.1.32.0 /24

10.1.32.1 belong to which of the original network 

3 REPLIES
New Member

10.1.32.1 belong to nobody of

10.1.32.1 belong to nobody of the subnet

Cisco Employee

10.1.32.1 doesnt belong to

10.1.32.1 doesnt belong to the networks mentioned above.

2 bits you are borrowing which makes /26 hence the network would be:                                                                                                                                                                    

 

A)10.1.32.0/26>>>> so here is your ip address belongs.                                                                                                                                              

 

B)10.1.32.64/26                                                                                                                                                                                                                                                         

C) 

10.1.32.128/26                                                                                                                                                                                                                             D)10.1.32.192/26 

 

 

HTH

Super Bronze

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Just another explanation . . .

10.1.32.0/24 IP range: 10.1.32.0..255

10.1.43.64/26 IP range: 10.1.32.64..127

10.1.43.128/26 IP range: 10.1.32.128..191

So, as the other posters have also noted, 10.1.32.1 isn't in either of the above /26 networks, but is in the /24.

Although the /24 "summary" does include both of the listed /26 networks, it also includes more IPs, it also includes the /26 networks, 10.1.32.0/26 and 10.1.32.192/26; the former also being the /26 that does include 10.1.32.1.

BTW, summary network prefixes can include IP addresses they don't really "own", but you need to be very careful when doing so.

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