محاسبه‌گر زیرشبکه
یک شبکه و طول پیشوند جدید را برای تقسیم به زیرشبکه‌های برابر انتخاب کنید.
۴ زیرشبکهٔ /24
| # | نشانی شبکه | بازهٔ قابل استفاده | نشانی همگانی (broadcast) | میزبان‌های قابل استفاده |
|---|---|---|---|---|
| 1 | 10.0.0.0/24 | 10.0.0.1 – 10.0.0.254 | 10.0.0.255 | ۲۵۴ |
| 2 | 10.0.1.0/24 | 10.0.1.1 – 10.0.1.254 | 10.0.1.255 | ۲۵۴ |
| 3 | 10.0.2.0/24 | 10.0.2.1 – 10.0.2.254 | 10.0.2.255 | ۲۵۴ |
| 4 | 10.0.3.0/24 | 10.0.3.1 – 10.0.3.254 | 10.0.3.255 | ۲۵۴ |
این متن هنوز به فارسی در دسترس نیست. تا انتشار ترجمه به انگلیسی نمایش داده می‌شود.
Subnetting divides one network into smaller, equally sized networks by lengthening the prefix. Every extra bit doubles the number of subnets and halves their size: a /24 split into /26 gives four networks of 64 addresses each.
Pick a network and the new prefix length. The table lists each resulting subnet with its usable range — useful for planning VLANs, cloud VPC subnets or IPv6 site allocations. For IPv6, the common unit for a single LAN is a /64; sites typically receive a /48 or /56.
پرسش‌های پرتکرار
How do I split a /24 into four subnets?
Use /26. Adding two bits to the prefix (24 + 2) creates 2² = 4 subnets of 64 addresses: .0/26, .64/26, .128/26 and .192/26.
Why should IPv6 LANs use /64?
SLAAC address autoconfiguration and many IPv6 features assume a 64-bit interface identifier, so subnets smaller than /64 break standard behaviour.
Can subnets be different sizes?
Yes — that is variable-length subnet masking (VLSM). Calculate each block separately and make sure the ranges don't overlap.