Skip to content

Latest commit

 

History

History
46 lines (36 loc) · 711 Bytes

cidr.md

File metadata and controls

46 lines (36 loc) · 711 Bytes
Raw

VPC CIDR

  • Maximum / 16 (65536 IPS)
  • Minimum /28 (16 IPS)
  • VPC private CIDR IP range (RFC 1918)

      • 1. 10.0.0.0 - 10.255.255.255 (10/8 prefix)
      2. 0172.16.0.0 - 172.31.255.255 (172.16/12 prefix)
      3. 192.168.0.0 - 192.168.255.255 (192.168/16 prefix)
  • CIDR Calculation

    • Network->[x.x] x.x/16<-prefix(calculate network>)
32-16 =16
2 ^{16}
65536

    Network->[x.x.x].x/24<-prefix(calculate network>)
32-24 =8
2 ^{8}
256

    Example

    VPC CIDR:

10.0.0.0/16

Subnet CIDR:

Avaliabilty Zone One
10.0.0.0/24
10.0.1.0/24

Avaliability Zone Two
10.0.10.0/24
10.0.11.0/24

Avaliability Zone Two
10.0.20.0/24
10.0.21.0/24