<Jeremy's IT Lab> Day14: Subnetting(Part2)

Subnetting(Part2)

 

if) 192. 168. 255/26

Borrowing 1 bit = can make 2 subnets

2^x= number of subnets (x = number of 'borrowed' bits)

2^n - 2 = number of hosts (n = number of host bits)

 

# Subnets/Hosts(Class B)

 

Prefix Length	Number of Subnets	Number of Hostsx
/17	2	32766
/18	4	16382
/19	8	8190
/20	16	4094
/21	32	2044
/22	64	1022
/23	128	510
/24	256	254

 

Prefix Length	Number of Subnets	Number of Hosts
/25	2	126
/26	4	62
/27	8	30
/28	16	14
/29	32	6
/30	64	2
/31	128	0(2)
/32	256	0(1)