<Jeremy's IT Lab> Day13: Subnetting(Part1)

Subnetting(Part1)

 

 

point-to-point network (Router - Router)

 

CIDR requirements of Class A - C were removed 

 

2^n - 2 = usable addresses (1 Network address, 1 Broadcast address)

Dotted Decimal	CIDR Notion
255.255.255.128	/25
255.255.255.192	/26
255.255.255.224	/27
255.255.255.240	/28
255.255.255.248	/29
255.255.255.252	/30
255.255.255.254	/31 (x)
255.255.255.255	/32 (x)

 

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Acronym:

• CIDR : Classless Inter-Domain Routing