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1 Communicatienetwerken Oefeningenreeks 2 (deel 1) Hoofdstuk : Netwerk Laag Woensdag 25 oktober 2006.

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Presentation on theme: "1 Communicatienetwerken Oefeningenreeks 2 (deel 1) Hoofdstuk : Netwerk Laag Woensdag 25 oktober 2006."— Presentation transcript:

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2 1 Communicatienetwerken Oefeningenreeks 2 (deel 1) Hoofdstuk : Netwerk Laag Woensdag 25 oktober 2006

3 2 Is this a class A,B or C address ? 138.134.122.12 22.136.42.35 193.157.122.10 Is this a possible host adres? 102.101.99.98 253.254.255.256 133.133.133.133 subnetmask : FF.FE.00.00 123.123.123.123 subnetmask : FF.E0.00.00 14.143.143.143 subnetmask : FF.0F.00.00 How many hosts are there in this subnetwork 157.193.122.96 subnetmask : FF.FF.FF.E0 157.193.122.240 is a host in a network with 62 hosts What is the subnetworkaddress and the subnetmask ? class B class A class C Yes No (>255 !) No Yes No (wrong mask) 30 hosts subnet:157.193.122.192 mask : FF.FF.FF.C0 VRAAG 1

4 3 Subnetwork 157.193.227.0 router A Subnetwork 157.193.103.0 Subnetwork 157.193.102.0 router B 157.193.102.1 157.193.103.1 157.193.10.1 157.193.102.34 Subnetwork 157.193.10.0 subnet masks: FF:FF:FF:00 router towards INTERNET VRAAG 2 - Routing table A ?

5 4 Subnetwork 157.193.227.0 router A LAN 4 Subnetwork 157.193.103.0 157.193.102.254 157.193.102.253 LAN 1 Subnetwork 157.193.102.0 router B 157.193.102.1 157.193.103.1 157.193.10.1 157.193.102.34 LAN 3 Subnetwork 157.193.10.0 subnet masks: FF:FF:FF:00 LAN 2 router towards INTERNET 157.193.227.254 157.193.227.253 157.193.103.254 157.193.10.254 VRAAG 2 : oplossing Always: - “default” entry - “local” entry DestinationSubnet MaskGatewayInterface 157.193.102.0FF.FF.FF.00157.193.102.254LAN 1 157.193.103.0FF.FF.FF.00157.193.103.254LAN 2 157.193.227.0FF.FF.FF.00157.193.227.254LAN 4 157.193.10.0FF.FF.FF.00157.193.102.253LAN 1 0.0.0.000.00.00.00157.193.227.253LAN 4 127.0.0.0FF.00.00.00127.0.0.1Lo Direct connected Networks, not in default

6 5 VRAAG 3.122.0.184.0.138.0 rtr-urb.155.0.149.0 tacitus hera URBIS ARC Klasse B 157.193.0.0 Atlantis INTEC2 - Redistribute IP addresses using only.184 and.122 (most PC’s in Atlantis) - Routing table of rtr-urb (before and after redistribution)

7 6 Split subnetwork.122 (because more.184 users)

8 7 VRAAG 3 : Antwoord rtr-urb tacitus hera URBIS ARC Atlantis INTEC2.138.0.184.0.122.0.FF.80.122.128.FF.FC.129.130.133.134.122.132.FF.FC.122.128 /30.122.132 /30.122.0 /25.184.0 /24 Free subnets :.122.136 /29.122.144 /28.122.160 /27.122.192 /26 254 253 /30 subnet:.122.128 is Network Address.122.131 is Broadcast Address Only.122.129 and.122.130 can be used

9 8 VRAAG 3 : Antwoord Routing table rtr-urb original network DestinationMaskGatewayInterface.138.0/24 or FF.FF.FF.00.138.254.149.0/24 or FF.FF.FF.00.149.254.155.0/24 or FF.FF.FF.00.155.254.122.0/24 or FF.FF.FF.00.155.253.155.254.184.0/24 or FF.FF.FF.00.149.253.149.254 default0.0.0.0.138.253.138.254 127.0.0.0/8 or FF.0.0.0127.0.0.1lo Routing table rtr-urb new network DestinationMaskGatewayInterface.138.0/24 or FF.FF.FF.00.138.254.122.128/30 or FF.FF.FF.FC.122.129.122.132/30 or FF.FF.FF.FC.122.133.122.0/25 or FF.FF.FF.80.122.134.122.133.184.0/24 or FF.FF.FF.00.122.130.122.129 default0.0.0.0.138.253.138.254 127.0.0.0/8 or FF.0.0.0127.0.0.1lo

10 9 VRAAG 4 ABE DC Internet Subnetmask: FF.FF.FF.00 157.193.1.0 157.193.2.0 157.193.3.0 157.193.4.0 157.193.5.0 157.193.254.0 F - Routing table D - Use OSPF

11 10 VRAAG 4 : antwoord ABE DC Internet Subnetmask: FF.FF.FF.00 157.193.1.0 157.193.2.0 157.193.3.0 157.193.4.0 157.193.5.0 157.193.254.0 F.254.253 DestinationMaskGatewayInterface 157.193.3.0FF.FF.FF.00157.193.3.254 157.193.4.0FF.FF.FF.00157.193.4.254 157.193.2.0FF.FF.FF.00157.193.3.253157.193.3.254 0.0.0.0 157.193.4.253157.193.4.254 127.0.0.0FF.0.0.0127.0.0.1Lo DestinationMaskGatewayInterface 0.0.0.0 157.193.4.253157.193.4.254 127.0.0.0FF.0.0.0127.0.0.1Lo 157.193.2.0FF.FF.FF.00157.193.3.253157.193.3.254 157.193.3.0FF.FF.FF.00157.193.3.254 157.193.4.0FF.FF.FF.00157.193.4.254

12 11 VRAAG 6 : ISP netwerk configuratie 10 netwerken Van 1.000 PC’s 4 netwerken Van 10.000 PC’s 2 netwerken Van 60.000 PC’s … A Public Internet 157.16.0.0/14 Z 1.1.1.254 1.1.1.253

13 12 157.16.0.0/14 VRAAG 6 : ISP netwerk configuratie /14 : 18 bits, 256 k adressen /15 : 17 bits, 128 k /16 : 16 bits, 64 k /17 : 15 bits, 36 k /18 : 14 bits, 16 k /19 : 13 bits, 8 k /20 : 12 bits, 4 k /21 : 11 bits, 2 k /22 : 10 bits, 1 k 10 netwerken Van 1.000 PC’s 4 netwerken Van 10.000 PC’s 2 netwerken Van 60.000 PC’s … A /15 128k /15 128k /16 60k /16 60k /16 64k /16 64k /17 32k /17 32k /18 10k /18 10k /18 10k /18 10k /17 32k /17 32k /18 16k /18 16k /20 4k /21 2k /20 4k /22 1k /22 1k /22 1k /22 1k /22 1k /22 1k /22 1k /22 1k /21 2k /21 2k /21 2k /19 8k /19 8k /20 4k /20 4k /21 2k /21 2k /22 1k /22 1k /22 1k /22 1k /23 512 /23 512 /24 256 /24 256

14 13 … A Public Internet 157.16.0.0/16 157.17.0.0/16 Z 157.18.0.0/18 157.18.64.0/18 157.18.128.0/18 157.18.192.0/18 157.16.0.0/14 157.19.0.0/22 157.19.4.0/22 157.19.8.0/22 157.19.12.0/22 157.19.16.0/22 157.19.20.0/22 157.19.24.0/22 157.19.28.0/22 157.19.32.0/22 157.19.36.0/22 157.19.40.0/30 157.19.40.4/30 157.19.40.8/30 157.19.40.9 157.19.40.10 157.19.40.6 157.19.40.2 157.19.40.1 157.19.40.5 1.1.1.254 1.1.1.253 Adresbereik : 157.16.0.1 – 157.19.255.254 Aantal adressen : 4 x 65.536 -2 = 262.142 VRAAG 6 : ISP netwerk configuratie

15 14 157.19.0.0 FREE : 157.19.44.0/22 157.19.48.0/20 157.19.64.0/18 157.19.128.0/17

16 15 157.19.40.0 FREE : 157.19.40.12/30 157.19.40.16/28 157.19.40.32/27 157.19.40.64/26 157.19.40.128/25

17 16 FREE : 157.19.44.0/22 157.19.48.0/20 157.19.64.0/18 157.19.128.0/17 Subnetsubnetmaskgatewayinterface 1.1.1.0/241.1.1.254 157.19.40.0/30157.19.40.1 157.19.40.4/30157.19.40.5 157.19.40.8/30157.19.40.9 157.16.0.0/15157.19.40.10157.19.40.9 157.18.0.0/16157.19.40.6157.19.40.5 157.19.0.0/19157.19.40.2157.19.40.1 157.19.32.0/21157.19.40.2157.19.40.1 0.0.0.0/01.1.1.2531.1.1.254 127.0.0.0/8127.0.0.1Lo de 2 netwerken met 60.000 PC’s de 4 netwerken met 10.000 PC’s 8 netwerken met 1.000 PC’s overige 2 netwerken met 1.000 PC’s Router A subnetsubnetmaskgatewayinterface 157.16.0.0/14 123.123.123.253123.123.123.254 Router Z FREE : 157.19.40.12/30 157.19.40.16/28 157.19.40.32/27 157.19.40.64/26 157.19.40.128/25 VRAAG 6 : ISP netwerk configuratie FREE : 157.19.41.0/24 157.19.42.0/23

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