Kas ir Subnetting?
Subnetting ir process, kurā tīklu sadala divos vai vairākos mazākos tīklos. Tas uzlabo datplūsmas plūsmu, drošību un vienkāršo tīkla pārvaldību.
Bieži Izmantotā CIDR Notācija
- /32: Viena IP adrese Single IP address
- /30: Punkts-punkts saite (2 izmantojami hosti) Point-to-point link (2 usable hosts)
- /24: Standarta mazs tīkls (254 izmantojami hosti) Standard small network (254 usable
hosts)
- /16: Liels korporatīvais tīkls (65,534 izmantojami hosti) Large corporate network (65,534 usable
hosts)
- /8: Ļoti liels tīkls (16.7M izmantojami hosti) 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.