Kas yra potinklių kūrimas?
Potinklių kūrimas yra tinklo padalijimas į du ar daugiau mažesnių tinklų. Tai pagerina srauto srautą, saugumą ir supaprastina tinklo valdymą.
Dažnas CIDR žymėjimas
- /32: Vienas IP adresas Single IP address
- /30: Tiesioginė nuoroda (2 naudojami hostai) Point-to-point link (2 usable hosts)
- /24: Standartinis mažas tinklas (254 naudojami hostai) Standard small network (254 usable
hosts)
- /16: Didelis korporacinis tinklas (65 534 naudojami hostai) Large corporate network (65,534 usable
hosts)
- /8: Labai didelis tinklas (16,7 mln. naudojamų hostų) Very large network (16.7M usable hosts)
Computes network addresses, broadcast addresses, usable host ranges, and CIDR notation for IP subnets. Essential for network planning.
Key Facts
- /24 subnet has 254 usable IPs
- Private ranges: 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16
- Subnetting introduced in 1985 (RFC 950)
- CIDR replaced classful networking in 1993
Frequently Asked Questions
What is a subnet?
A logical division of an IP network into smaller segments for security, performance, and efficient IP usage.
What does /24 mean?
First 24 bits are network portion, 8 bits for hosts = 254 usable addresses.
How to calculate hosts?
Formula: 2^(32-prefix) - 2. For /24: 2^8 - 2 = 254 usable hosts.
Public vs private IP ranges?
Private (10.x, 172.16-31.x, 192.168.x) for internal use. Public IPs are globally unique for internet.