Dynamic Host Configuration Protocol (Discover) Option: (53) DHCP Message Type (Discover) Length: 1 DHCP: Discover (1)...

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Dynamic Host Configuration Protocol (Discover) Option: (53) DHCP Message Type (Discover) Length: 1 DHCP: Discover (1) Option: (61) Client identifier Length: 7 Hardware type: Ethernet (0x01) Client MAC address: XXX.XXX.XXX.XXX Option: (50) Requested IP Address Length: 4 Requested IP Address: 192.168.1.10 Dynamic Host Configuration Protocol (Offer) Option: (53) DHCP Message Type (Offer) Length: 1 DHCP: Offer (2) Option: (61) Client identifier Length: 7 Hardware type: Ethernet (0x01) Client MAC address: XXXXXXXXXXXXXXXXXXX Option: (54) DHCP Server Identifier Length: 4 DHCP Server Identifier: XXX.XXX.XXX.XXX Option: (51) IP Address Lease Time Length: 4 IP Address Lease Time: (86400s) 1 day Option: (58) Renewal Time Value Length: 4 Renewal Time Value: (43200s) 12 hours Option: (59) Rebinding Time Value Length: 4 Rebinding Time Value: (75600s) 21 hours Option: (6) Domain Name Server Length: 4 Domain Name Server: XXX.XXX.XXX.XXX Option: (3) Router Length: 4 Router: XXX.XXX.XXX.XXX Option: (1) Subnet Mask Length: 4 Subnet Mask: XXX.XXX.XXX.XXX Option: (2) Time Offset Length: 4 Time Offset: (-21600s) -6 hours Option: (255) End Option End: 255 Dynamic Host Configuration Protocol (Request) Option: (53) DHCP Message Type Length: 1 DHCP: Request (3) Option: (61) Client identifier Length: 7 Hardware type: Ethernet (0x01) Client MAC address: XX:XX:XX:XX:XX:XX Option: (50) Requested IP Address Length: 4 Requested IP Address: XXX.XXX.XXX.XXX Option: (54) DHCP Server Identifier Length: 4 DHCP Server Identifier: XXX.XXX.XXX.XXX Option: (12) Host Name Length: 13 Host Name: lenovo-laptop Dynamic Host Configuration Protocol (ACK) Option: (53) DHCP Message Type Length: 1 DHCP ACK (5) Option: (61) Client identifier Length: 7 Hardware type: Ethernet (0x01) Client MAC address: XX:XX:XX:XX:XX:XX Option: (54) DHCP Server Identifier Length: 4 DHCP Server Identifier: XXX.XXX.XXX.XXX Option: (51) IP Address Lease Time Length: 4 IP Address Lease Time: (86400s) 1 day Option: (58) Renewal Time Value Length: 4 Renewal Time Value: (43200s) 12 hours Option: (59) Rebinding Time Value Length: 4 Rebinding Time Value: (75600s) 21 hours Option: (6) Domain Name Server Length: 4 Domain Name Server: XXX.XXX.XXX.XXX Option: (3) Router Length: 4 Router: XXX.XXX.XXX.XXX Option: (1) Subnet Mask Length: 4 Subnet Mask: XXX.XXX.XXX.XXX Field Value IP Address XXX.XXX.XXX.XXX Subnet XXX.XXX.XXX.XXX Default Gateway XXX.XXX.XXX.XXX DNS Server XXX.XXX.XXX.XXX MAC Address B4:74:9F:88:4E:43 Internet Protocol Version 4, 0100 ---- = Version: 4 0101 = Header Length: 20 bytes (5) Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT) Total Length: 60 Identification: 0x83c3 (33731) Flags: 0x00 ...0 0000 0000 0000 = Fragment Offset: 0 Time to Live: 128 Protocol: ICMP (1) Header Checksum: 0x0000 [validation disabled] Source Address: XXX.XXX.XXX.XXX Destination Address: XXX.XXX.XXX.XXX Address Resolution Protocol (reply) Hardware type: Ethernet (1) Protocol type: IPv4 (0x0800) Hardware size: 6 Protocol size: 4 Opcode: reply (2) Sender MAC address: XX:XX:XX:XX:XX:XX Sender IP address: XXX.XXX.XXX.XXX Target MAC address: B4:74:9F:88:4E:43 Target IP address: 192.168.1.10 Internet Protocol Version 4 0100 = Version: 4 0101 = Header Length: 20 bytes (5) Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT) Total Length: 430 Identification: 0xa51f (42271) Flags: 0x40, Don't fragment ...0 0000 0000 0000 = Fragment Offset: 0 Time to Live: 128 Protocol: TCP (6) Header Checksum: 0x90c5 [validation disabled] [Header checksum status: Unverified] Source Address: XXX.XXX.XXX.XXX Destination Address: XXX.XXX.XXX.XXX Transmission Control Protocol Source Port: 13310 Destination Port: XX Network Prefix Output Port - - - - ITM Network A B C Computer Science Network Applied Math Network D A B C A B C ITM Network PC A Field Value IP Address Subnet Default Gateway DNS Server MAC Address B4:74:9F:88:4E:43 PC B Field Value IP Address 192.168.1.11 Subnet 255.255.255.0 or /24 Default Gateway 192.168.1.254 Default Gateway 192.168.3.4 MAC Address B4:74:9F:88:4E:44 PC C DHCP Server - IP Address Field Value 192.168.1.3 Subnet Default Gateway MAC Address DHCP Address Offer range DHCP Subnet DHCP Default Gateway 255.255.255.0 or /24 192.168.1.254 B4:74:9F:88:4E:45 192.168.1.10-20 /24 or 255.255.255.0 192.168.1.254 DHCP Server Address 192.168.1.3 DNS Server 192.168.3.4 Computer Science Network PC A Field Value IP Address Subnet Default Gateway MAC Address B4:74:9F:88:01:00 PC B Field Value IP Address 192.168.2.2 Subnet 255.255.255.0 Default Gateway 192.168.2.254 MAC Address B4:74:9F:88:02:00 DNS Server 192.168.3.4 PC C DHCP Server IP Address Field Value 192.168.2.3 Subnet Default Gateway MAC Address DHCP Address Offer range DHCP Subnet DHCP Default Gateway 255.255.255.0 or /24 192.168.2.254 B4:74:9F:88:03:00 192.168.2.10-20 /24 or 255.255.255.0 192.168.2.254 DHCP Server Address 192.168.2.3 DNS Server 192.168.3.4 Applied Math Network PC A Field Value IP Address Subnet Default Gateway MAC Address PC B B4:74:9F:01:10:56 Field IP Address Subnet Default Gateway MAC Address Value 192.168.3.2 /24 or 255.255.255.0 192.168.3.2 B4:74:9F:02:10:56 PC CDHCP Server IP Address Subnet Field Default Gateway MAC Address DHCP Address Offer range DHCP Subnet DHCP Default Gateway Value 192.168.3.3 255.255.255.0 or /24 192.168.3.254 B4:74:9F:03:10:56 192.168.3.10-20 /24 or 255.255.255.0 192.168.3.254 DHCP Server Address 192.168.3.3 DNS Server 192.168.3.4 PC DDNS Server Field Value IP Address 192.168.3.4 Subnet 255.255.255.0 or /24 Default Gateway 192.168.3.254 MAC Address B4:74:9F:04:10:56 DNS A Record fusion.cs.iit.edu, 192.168.2.2, A DNS A Record oldserver.cs.iit.edu, 192.168.2.5, A Router The router has three interfaces Field Value Output Interface Number ITM NIC IP ITM NIC MAC Computer Science NIC IP 192.168.1.254 0 34:98:B5:00:00:01 - 192.168.2.254 34:98:B5:00:00:02 1 computer Science NIC MAC Applied Math NIC IP 192.168.3.254 2 Applied Math NIC MAC 34:98:B5:00:00:03 Dynamic Host Configuration Protocol (Discover) Option: (53) DHCP Message Type (Discover) Length: 1 DHCP: Discover (1) Option: (61) Client identifier Length: 7 Hardware type: Ethernet (0x01) Client MAC address: XXX.XXX.XXX.XXX Option: (50) Requested IP Address Length: 4 Requested IP Address: 192.168.1.10 Dynamic Host Configuration Protocol (Offer) Option: (53) DHCP Message Type (Offer) Length: 1 DHCP: Offer (2) Option: (61) Client identifier Length: 7 Hardware type: Ethernet (0x01) Client MAC address: XXXXXXXXXXXXXXXXXXX Option: (54) DHCP Server Identifier Length: 4 DHCP Server Identifier: XXX.XXX.XXX.XXX Option: (51) IP Address Lease Time Length: 4 IP Address Lease Time: (86400s) 1 day Option: (58) Renewal Time Value Length: 4 Renewal Time Value: (43200s) 12 hours Option: (59) Rebinding Time Value Length: 4 Rebinding Time Value: (75600s) 21 hours Option: (6) Domain Name Server Length: 4 Domain Name Server: XXX.XXX.XXX.XXX Option: (3) Router Length: 4 Router: XXX.XXX.XXX.XXX Option: (1) Subnet Mask Length: 4 Subnet Mask: XXX.XXX.XXX.XXX Option: (2) Time Offset Length: 4 Time Offset: (-21600s) -6 hours Option: (255) End Option End: 255 Dynamic Host Configuration Protocol (Request) Option: (53) DHCP Message Type Length: 1 DHCP: Request (3) Option: (61) Client identifier Length: 7 Hardware type: Ethernet (0x01) Client MAC address: XX:XX:XX:XX:XX:XX Option: (50) Requested IP Address Length: 4 Requested IP Address: XXX.XXX.XXX.XXX Option: (54) DHCP Server Identifier Length: 4 DHCP Server Identifier: XXX.XXX.XXX.XXX Option: (12) Host Name Length: 13 Host Name: lenovo-laptop Dynamic Host Configuration Protocol (ACK) Option: (53) DHCP Message Type Length: 1 DHCP ACK (5) Option: (61) Client identifier Length: 7 Hardware type: Ethernet (0x01) Client MAC address: XX:XX:XX:XX:XX:XX Option: (54) DHCP Server Identifier Length: 4 DHCP Server Identifier: XXX.XXX.XXX.XXX Option: (51) IP Address Lease Time Length: 4 IP Address Lease Time: (86400s) 1 day Option: (58) Renewal Time Value Length: 4 Renewal Time Value: (43200s) 12 hours Option: (59) Rebinding Time Value Length: 4 Rebinding Time Value: (75600s) 21 hours Option: (6) Domain Name Server Length: 4 Domain Name Server: XXX.XXX.XXX.XXX Option: (3) Router Length: 4 Router: XXX.XXX.XXX.XXX Option: (1) Subnet Mask Length: 4 Subnet Mask: XXX.XXX.XXX.XXX Field Value IP Address XXX.XXX.XXX.XXX Subnet XXX.XXX.XXX.XXX Default Gateway XXX.XXX.XXX.XXX DNS Server XXX.XXX.XXX.XXX MAC Address B4:74:9F:88:4E:43 Internet Protocol Version 4, 0100 ---- = Version: 4 0101 = Header Length: 20 bytes (5) Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT) Total Length: 60 Identification: 0x83c3 (33731) Flags: 0x00 ...0 0000 0000 0000 = Fragment Offset: 0 Time to Live: 128 Protocol: ICMP (1) Header Checksum: 0x0000 [validation disabled] Source Address: XXX.XXX.XXX.XXX Destination Address: XXX.XXX.XXX.XXX Address Resolution Protocol (reply) Hardware type: Ethernet (1) Protocol type: IPv4 (0x0800) Hardware size: 6 Protocol size: 4 Opcode: reply (2) Sender MAC address: XX:XX:XX:XX:XX:XX Sender IP address: XXX.XXX.XXX.XXX Target MAC address: B4:74:9F:88:4E:43 Target IP address: 192.168.1.10 Internet Protocol Version 4 0100 = Version: 4 0101 = Header Length: 20 bytes (5) Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT) Total Length: 430 Identification: 0xa51f (42271) Flags: 0x40, Don't fragment ...0 0000 0000 0000 = Fragment Offset: 0 Time to Live: 128 Protocol: TCP (6) Header Checksum: 0x90c5 [validation disabled] [Header checksum status: Unverified] Source Address: XXX.XXX.XXX.XXX Destination Address: XXX.XXX.XXX.XXX Transmission Control Protocol Source Port: 13310 Destination Port: XX Network Prefix Output Port - - - - ITM Network A B C Computer Science Network Applied Math Network D A B C A B C ITM Network PC A Field Value IP Address Subnet Default Gateway DNS Server MAC Address B4:74:9F:88:4E:43 PC B Field Value IP Address 192.168.1.11 Subnet 255.255.255.0 or /24 Default Gateway 192.168.1.254 Default Gateway 192.168.3.4 MAC Address B4:74:9F:88:4E:44 PC C DHCP Server - IP Address Field Value 192.168.1.3 Subnet Default Gateway MAC Address DHCP Address Offer range DHCP Subnet DHCP Default Gateway 255.255.255.0 or /24 192.168.1.254 B4:74:9F:88:4E:45 192.168.1.10-20 /24 or 255.255.255.0 192.168.1.254 DHCP Server Address 192.168.1.3 DNS Server 192.168.3.4 Computer Science Network PC A Field Value IP Address Subnet Default Gateway MAC Address B4:74:9F:88:01:00 PC B Field Value IP Address 192.168.2.2 Subnet 255.255.255.0 Default Gateway 192.168.2.254 MAC Address B4:74:9F:88:02:00 DNS Server 192.168.3.4 PC C DHCP Server IP Address Field Value 192.168.2.3 Subnet Default Gateway MAC Address DHCP Address Offer range DHCP Subnet DHCP Default Gateway 255.255.255.0 or /24 192.168.2.254 B4:74:9F:88:03:00 192.168.2.10-20 /24 or 255.255.255.0 192.168.2.254 DHCP Server Address 192.168.2.3 DNS Server 192.168.3.4 Applied Math Network PC A Field Value IP Address Subnet Default Gateway MAC Address PC B B4:74:9F:01:10:56 Field IP Address Subnet Default Gateway MAC Address Value 192.168.3.2 /24 or 255.255.255.0 192.168.3.2 B4:74:9F:02:10:56 PC CDHCP Server IP Address Subnet Field Default Gateway MAC Address DHCP Address Offer range DHCP Subnet DHCP Default Gateway Value 192.168.3.3 255.255.255.0 or /24 192.168.3.254 B4:74:9F:03:10:56 192.168.3.10-20 /24 or 255.255.255.0 192.168.3.254 DHCP Server Address 192.168.3.3 DNS Server 192.168.3.4 PC DDNS Server Field Value IP Address 192.168.3.4 Subnet 255.255.255.0 or /24 Default Gateway 192.168.3.254 MAC Address B4:74:9F:04:10:56 DNS A Record fusion.cs.iit.edu, 192.168.2.2, A DNS A Record oldserver.cs.iit.edu, 192.168.2.5, A Router The router has three interfaces Field Value Output Interface Number ITM NIC IP ITM NIC MAC Computer Science NIC IP 192.168.1.254 0 34:98:B5:00:00:01 - 192.168.2.254 34:98:B5:00:00:02 1 computer Science NIC MAC Applied Math NIC IP 192.168.3.254 2 Applied Math NIC MAC 34:98:B5:00:00:03