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DHCP Server C. BOOTP relay agent. DHCP server D. .2. .2. .3. .1. 45:61:29:3f:e5:12. Router B. .3. .1. Router A. 128.238.17. Internet. Ethernet. .1. 128.238.16. 128.238.15. Ethernet. 38:94:a3:d7:e0:b3. AP IV. 3f:20:49:18:b6:a9. 87:76:b1:a6:af:e1. 1:9:23:45:aa:b5. AP I.
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DHCP Server C BOOTP relay agent DHCP server D .2 .2 .3 .1 45:61:29:3f:e5:12 Router B .3 .1 Router A 128.238.17 Internet Ethernet .1 128.238.16 128.238.15 Ethernet 38:94:a3:d7:e0:b3 AP IV 3f:20:49:18:b6:a9 87:76:b1:a6:af:e1 1:9:23:45:aa:b5 AP I AP II Server 12:37:56:fe:b8:a1 90:87:b5:11:34:af Host A Host A Host B 56:79:02:34:19:ab 03:04:12:ef:a3:45
HLR for all 718-555 numbers SS7 Network HLR1 PSTN Switch C VLR2 PSTN Switch D 1 VLR1 1 1 GMSC/MSC2 3 GMSC/MSC1 1 415-555 PSTN Switch A 2 718-555 2 PSTN Switch E 3 1 PSTN Switch B 1 Link weights (used for shortest-path routing) 718-555-1234 212-555-5672 Signaling link Trunk