Networking Fundamentals 2 IP Addressing Email Phone millanovilearning
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Networking Fundamentals 2. IP Addressing Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing Следва: Бройни Системи, Видове Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing Десетична бройна система 2 2 1 0 666 Основа: 10 1 0 6 x 10+6 x 10 600+60+6=666 Символи/цифри: 0 1 2 3 4 5 6 7 8 9 Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing Основа: 16 Шеснадесетична бройна система 1 0 1 A 1 1 x 16+Ax 16 0 16+10=26 Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884 0 1 2 3 4 5 6 7 8 9 A B C D E F 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Networking Fundamentals 2. IP Addressing Двоична бройна система 6 5 4 3 2 1 0 Основа: 2 1000101 6 2 0 1 x 2+1 х2 64+4+1=69 Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884 0 1
Networking Fundamentals 2. IP Addressing Следва: IPv 4 Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing IPv 4 Address 192. 168. 100. 5 11000000 10101000 01100100 00000101 bit: 0 или 1 --------. ---- 4 октета (32 бита) Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing IPv 4 Address Октет: n =__ 7 __ 6 __ 5 __ 4 __ 3 __ 2 __ 1 __ 0 n 2 =128 64 32 16 8 4 2 1 255 Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing IPv 4 Address Пресмятане: 1 1 0 0 0 __ __ 128 64 0 0 0 192 Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing IPv 4 Address Адресно пространство: 0 - 255 --------. -------32 4 октета = 4 х 8 бита = 32 бита = 2 = 4 294 967 296 адреса 128 *IPv 6 128 бита = 2 ≈ 3. 4 х 1 0 3 8 адреса Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing Следва: IPv 4 адреси, видове Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing IPv 4 Address Classes A B C D E 0. 0 127. 255 128. 0. 0. 0 191. 255 IP адреси за устройства 192. 0. 0. 0 223. 255 224. 0. 0. 0 239. 255 MULTICAST IP адреси 240. 0 255 EXPERIMENTAL Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing IPv 4 Address Types public private Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing IPv 4 Private Addresses A 10. 0 10. 255 B 172. 16. 0. 0 172. 31. 255 C 192. 168. 0. 0 192. 168. 255 Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing Следва: Мрежи Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing Следва: Мрежова маска Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing Network Mask 1 1 1 1 1 1 00000000 --------. ---- Network част = 1 s Host част = 0 s Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing Network Address Network ID IP 192. 168. 100. MASK 255. 5 0 + Logical AND Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing Network Address Network ID Logical AND: 1&0=0 1&1=1 0&1=0 0&0=0 IP 192. 168. 100. 5 11000000 10101000 01100100 00000101 MASK 255. 0 1 1 1 1 1 1 0000 NETWORK ID 192. 168. 100. 0 11000000 10101000 01100100 0000 Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing Broadcast Address Network End IP 192. 168. 100. 5 11000000 10101000 01100100 00000101 MASK 255. 0 1 1 1 1 1 1 0000 NETWORK ID 192. 168. 100. 0 11000000 10101000 01100100 0000 BROADCAST 192. 168. 100. 255 11000000 10101000 01100100 1 1 1 1 Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing 24 Network Mask 111 1 1 1 1 1 0000 --------. -------MASK 255. 0 MASK /24 192. 168. 100. 5 255. 0 prefix 192. 168. 100. 5 /24 Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing Network Mask C B A --------. ---- Classful Routing /8 /16 /24 “Class С” мрежа: /24 = 256 адреса „Class B” мрежа: /16 = 65 536 адреса „Class A” мрежа: /8 =16 777 216 адреса Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing IPv 4 „Специални“ мрежи 0. 0/0 означава „всички“ мрежи 127. 0. 0. 0/8 е запазена мрежа за Loopback адреси IP 127. 0. 0. 1 = localhost Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing Следва: Разделяне на мрежи на под-мрежи ( subnetting ) Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing Subnet Mask Subnetting CIDR – Classless Inter-Domain Routing VLSM – Variable Length Subnet Mask … /21 /22 /23 /24 /25 /26 /27 …. Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing /24 /25 /26 /27 /28 /29 /30 /31 /32 ____ _1 _ _ _ _1 _1 _1 _ _ _ 1 ____ _1 _1 _1 _ 1 ___ 1 _ _1 _1 _1 _ 1 _ 1 _ _1 _1 _1 _ ________ hosts Subnet Mask Subnetting 256 (254+2) 128 (126+2) 64 (62+2) 32 (30+2) 16 (14+2) 8 (6+2) 4 (2+2) point-to-point връзки 2 (2) 1 (1) self Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing Subnet Mask Subnetting 27 битове адреси маска 26 25 24 23 22 21 20 128 64 32 16 8 4 2 1 256 128 64 32 16 8 4 2 /24 /25 /26 /27 /28 /29 /30 /31 Извод: С увеличаване на маската с 1 бит делим изходната мрежа на 2. Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing Следва: Задачи Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing Задача 1: 3. Делим изходната мрежа на по-малки, спрямо най-голямата, и в низходящ ред: Supernet: 192. 168. 100. 0 -255/24 192. 168. 100. 0 -127/25 256 128 64 32 16 8 4 2 /24 /25 /26 /27 /28 /29 /30 /31 Човешки ресурси Развойни дейности Производство 192. 168. 100. 128 -255/25* *Supernet: 192. 168. 100. 128 -255/25 25 човека = 32 /27 40 човека = 64 /26 75 човека = 128 /25 192. 168. 100. 0/25 Производство 192. 168. 100. 128 -191/26 192. 168. 100. 192 -255/26* *Supernet: 192. 168. 100. 192 -255/26 192. 168. 100. 128/26 Развойни 192. 168. 100. 192 -223/27 192. 168. 100. 192/27 ЧР 192. 168. 100. 224 -255/27 Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing Задача 1: 4. Определяме съответните мрежови маски: 128 64 32 16 8 4 2 1 /25 /26 /27 /28 /29 /30 /31 /32 0. _1 _0 _0 _0 _. _1 _1 _0 _0 _0 1 _ 0 _ 0 _ 0. _1 _1 _ 192. 168. 100. 0/25 192. 168. 100. 128/26 192. 168. 100. 192/27 Email: Phone: Производство Развойни ЧР millanov@i-learning. bg +359 889 229 884 Network ID 192. 168. 100. 0/25 Производство Mask 255. 128 Network ID 192. 168. 100. 128/26 Развойни Mask 255. 192 Network ID 192. 168. 100. 192/27 ЧР Mask 255. 224 Лектор: Любомир Миланов
Networking Fundamentals 2. IP Addressing Задача 2: адреси маска 256 128 64 32 16 8 4 2 /24 /25 /26 /27 /28 /29 /30 /31 Supernet: 172. 16. 50. 0/24 1. 172. 16. 50. 0 /28 16 адреса = „Стъпка“ 16 2. 172. 16. 50. 16 /28 16 адреса = маска /28 3. 172. 16. 50. 32/28 4. 172. 16. 50. 48/28 Отговор: Петата мрежа е 172. 16. 50. 64/28 5. 172. 16. 50. 64/28 6. 172. 16. 50. 80/28 Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing Задача 2: 128 64 32 16 8 4 2 1 /25 /26 /27 /28 /29 /30 /31 /32 Мрежа: 172. 16. 50. 64 Маска: 255. 240 0 _ 0 0. _1 _1 _ _ 0_ Събираме стойностите: 128 + 64 + 32 + 16 = 240 Втори вариант: 256 – 16 = 240 Маска: 255. 240 Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing Задача 3: Колко мрежи с по 128 адреса има в мрежа, чиято мрежова маска е /22? 22 111 1 1 1 1 --------. -------Network bits = 22 Host bits = 32 – 22 = 10 1024 / 128 = 8 Отговор: Осем мрежи. Max hosts = 2 1 0 = 1 0 2 4 Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
Networking Fundamentals 2. IP Addressing Край на лекцията. Следват: Задачи за вас Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884
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