IPv4 မှာ Octet လေးခုရှိသည်။ Octet တစ်ခုချင်းစီတွင် 8 bit ရှိသည်။ ထို့ကြောင့် IPv4 တွင် 32 bit ရှိသည်။ IPv4 သည် binary (0, 1) နှင့် decimal (0, 9) တို့ အပေါ်တွင် အခြေခံသည်။
1st Octet 2nd Octet 3rd Octet 4th Octet
8 bits 8 bit 8 bits 8 bits
27 26 25 24 23 22 21 20 27 26 25 24 23 22 21 20 27 26 25 24 23 22 21 20 27 26 25 24 23 22 21 20
255.255.255.255 255.255.255.255 255.255.255.255 255.255.255.255
255 ဘယ်လိုဖြစ်လာသလဲ။ Octet တစ်ခုတွင် 8 bit ရှိပြီး binary ပေါ်တွင် အခြေခံထားသောကြောင့်
27 = 128, 26 = 64, 25 = 32, 24 = 16, 23 = 8, 22 = 4, 21 = 2, 20 = 1
128 + 64 + 32 + 16 + 8 + 4 + 2 + 1 = 255
Decimal ကနေ Binary သို့ ပြောင်းကြည့်ရအောင်
Decmial Binary
1st Octet 2nd Octet 3rd Octet 4th Octet 1st Octet 2nd Octet 3rd Octet 4th Octet
192 . 168 . 1 . 0 = 11000000 . 10101000 . 00000001 . 00000000
223 . 200 . 100 . 25 = 11011111 . 11001000 . 01100100 . 00011001
172 . 16 . 31 . 87 = 10101100 . 00010000 . 00011111 . 01010111
192.168.1.0/24 ကို ခွဲခြမ်းစိတ်ဖြာကြည့်ရအောင်....
1st Octet 2nd Octet 3rd Octet 4th Octet
8 bits 8 bit 8 bits 8 bits
27 26 25 24 23 22 21 20 27 26 25 24 23 22 21 20 27 26 25 24 23 22 21 20 27 26 25 24 23 22 21 20
255.255.255.255 255.255.255.255 255.255.255.255 255.255.255.255
Network Host
Network Address = 192.168.1.0
Subnet Mask = 255.255.255.0
Usable IP Addresses = 192.168.1.1 to 192.168.1.254
Broadcast Address = 192.168.1.255
192.168.1.0/25 ကို ခွဲခြမ်းစိတ်ဖြာကြည့်ရအောင်....
1st Octet 2nd Octet 3rd Octet 4th Octet
8 bits 8 bit 8 bits 8 bits
27 26 25 24 23 22 21 20 27 26 25 24 23 22 21 20 27 26 25 24 23 22 21 20 27 26 25 24 23 22 21 20
255.255.255.255 255.255.255.255 255.255.255.255 255.255.255.255
Network Host
1st Network Address = 192.168.1.0
Subnet Mask = 255.255.255.128
Usable IP Addresses = 192.168.1.1 to 192.168.1.126
Broadcast Address = 192.168.1.127
2nd Network Address = 192.168.1.128
Subnet Mask = 255.255.255.128
Usable IP Addresses = 192.168.1.129 to 192.168.1.254
Broadcast Address = 192.168.1.255
192.168.1.0/26 ကို ခွဲခြမ်းစိတ်ဖြာကြည့်ရအောင်....
1st Octet 2nd Octet 3rd Octet 4th Octet
8 bits 8 bit 8 bits 8 bits
27 26 25 24 23 22 21 20 27 26 25 24 23 22 21 20 27 26 25 24 23 22 21 20 27 26 25 24 23 22 21 20
255.255.255.255 255.255.255.255 255.255.255.255 255.255.255.255
Network Host
1st Network Address = 192.168.1.0
Subnet Mask = 192.168.1.192
Usable IP Addresses = 192.168.1.1 to 192.168.1.62
Broadcast Address = 192.168.1.63
2nd Network Address = 192.168.1.64
Subnet Mask = 192.168.1.192
Usable IP Addresses = 192.168.1.65 to 192.168.1.126
Broadcast Address = 192.168.1.127
3rd Network Address = 192.168.1.128
Subnet Mask = 192.168.1.192
Usable IP Addresses = 192.168.1.129 to 192.168.1.190
Broadcast Address = 192.168.1.191
4th Network Address = 192.168.1.192
Subnet Mask = 192.168.1.192
Usable IP Addresses = 192.168.1.193 to 192.168.1.254
Broadcast Address = 192.168.1.255
(မှတ်ချက် ။ Subnet Mask နှင့် IP Range သည် ပြောင်းပြန် အချိုးတူသည်။ Subnet Mask ကြီးလေလေ အသုံးပြု၍ ရသော IP အရေအတွက် နည်းလေလေ ဖြစ်သည်။)
အောက်ပါဇယားသည် IP Address Version 4 (Class C) အတွက်ဖြစ်သည်။ ၎င်းကို ကျနော် Singapore Polytechnic ကျောင်းမှာ တက်တုန်းက ရေးသားခဲ့သည်။
Binary Decimal Prefix Subnet Mask Count of Networks Usable Ip Range
- - /24 255.255.255.0 1 254
27 128 /25 255.255.255.128 2 126
+
26 64 /26 255.255.255.192 4 62
+
25 32 /27 255.255.255.224 8 30
+
24 16 /28 255.255.255.240 16 14
+
23 8 /29 255.255.255.248 32 6
+
22 4 /30 255.255.255.252 64 2
What do you think?
Send us feedback!
