Add experiment 1 results
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mininet@mininet-vm:~/Networks-II/exercise$ sudo python3 ../source/build_network.py topology.json
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Generated: topology.generated.py
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mininet> h1 rm -f /var/lib/dhcp/dhclient.leases
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mininet> h1 rm -f /tmp/dhcp.pcap
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mininet> h1 tcpdump -i h1-eth0 -n -w /tmp/dhcp.pcap &
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mininet> h1 ps aux | grep tcpdump
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tcpdump: listening on h1-eth0, link-type EN10MB (Ethernet), capture size 262144 bytes
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tcpdump 4196 0.0 0.1 10904 5920 pts/2 S+ 10:57 0:00 tcpdump -i h1-eth0 -n -w /tmp/dhcp.pcap
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root 4199 0.0 0.0 9368 2548 pts/2 S+ 10:58 0:00 grep tcpdump
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mininet> h1 dhclient h1-eth0
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mininet> h1 pkill -INT tcpdump
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12 packets captured
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12 packets received by filter
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0 packets dropped by kernel
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mininet> h1 tcpdump -n -e -vv -r /tmp/dhcp.pcap
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reading from file /tmp/dhcp.pcap, link-type EN10MB (Ethernet)
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10:58:29.655251 12:07:f8:bf:6e:ff > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto UDP (17), length 328)
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0.0.0.0.68 > 255.255.255.255.67: [udp sum ok] BOOTP/DHCP, Request from 12:07:f8:bf:6e:ff, length 300, xid 0xecb5a2e, Flags [none] (0x0000)
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Client-Ethernet-Address 12:07:f8:bf:6e:ff
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Vendor-rfc1048 Extensions
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Magic Cookie 0x63825363
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DHCP-Message Option 53, length 1: Discover
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Hostname Option 12, length 10: "mininet-vm"
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Parameter-Request Option 55, length 13:
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Subnet-Mask, BR, Time-Zone, Default-Gateway
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Domain-Name, Domain-Name-Server, Option 119, Hostname
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Netbios-Name-Server, Netbios-Scope, MTU, Classless-Static-Route
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NTP
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10:58:29.655633 82:3b:16:e9:bb:17 > ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 42: Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.1.131 tell 192.168.1.1, length 28
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10:58:30.662723 82:3b:16:e9:bb:17 > ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 42: Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.1.131 tell 192.168.1.1, length 28
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10:58:31.687064 82:3b:16:e9:bb:17 > ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 42: Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.1.131 tell 192.168.1.1, length 28
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10:58:32.214530 12:07:f8:bf:6e:ff > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto UDP (17), length 328)
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0.0.0.0.68 > 255.255.255.255.67: [udp sum ok] BOOTP/DHCP, Request from 12:07:f8:bf:6e:ff, length 300, xid 0xecb5a2e, secs 3, Flags [none] (0x0000)
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Client-Ethernet-Address 12:07:f8:bf:6e:ff
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Vendor-rfc1048 Extensions
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Magic Cookie 0x63825363
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DHCP-Message Option 53, length 1: Discover
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Hostname Option 12, length 10: "mininet-vm"
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Parameter-Request Option 55, length 13:
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Subnet-Mask, BR, Time-Zone, Default-Gateway
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Domain-Name, Domain-Name-Server, Option 119, Hostname
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Netbios-Name-Server, Netbios-Scope, MTU, Classless-Static-Route
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NTP
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10:58:32.670822 82:3b:16:e9:bb:17 > 12:07:f8:bf:6e:ff, ethertype IPv4 (0x0800), length 62: (tos 0x0, ttl 64, id 28856, offset 0, flags [DF], proto ICMP (1), length 48)
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192.168.1.1 > 192.168.1.131: ICMP echo request, id 21591, seq 0, length 28
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10:58:32.670897 82:3b:16:e9:bb:17 > 12:07:f8:bf:6e:ff, ethertype IPv4 (0x0800), length 342: (tos 0xc0, ttl 64, id 52736, offset 0, flags [none], proto UDP (17), length 328)
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192.168.1.1.67 > 192.168.1.131.68: [udp sum ok] BOOTP/DHCP, Reply, length 300, xid 0xecb5a2e, Flags [none] (0x0000)
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Your-IP 192.168.1.131
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Server-IP 192.168.1.1
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Client-Ethernet-Address 12:07:f8:bf:6e:ff
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Vendor-rfc1048 Extensions
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Magic Cookie 0x63825363
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DHCP-Message Option 53, length 1: Offer
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Server-ID Option 54, length 4: 192.168.1.1
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Lease-Time Option 51, length 4: 43200
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RN Option 58, length 4: 21600
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RB Option 59, length 4: 37800
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Subnet-Mask Option 1, length 4: 255.255.255.0
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BR Option 28, length 4: 192.168.1.255
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Default-Gateway Option 3, length 4: 192.168.1.1
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10:58:32.671193 12:07:f8:bf:6e:ff > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto UDP (17), length 328)
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0.0.0.0.68 > 255.255.255.255.67: [udp sum ok] BOOTP/DHCP, Request from 12:07:f8:bf:6e:ff, length 300, xid 0xecb5a2e, secs 3, Flags [none] (0x0000)
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Client-Ethernet-Address 12:07:f8:bf:6e:ff
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Vendor-rfc1048 Extensions
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Magic Cookie 0x63825363
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DHCP-Message Option 53, length 1: Request
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Server-ID Option 54, length 4: 192.168.1.1
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Requested-IP Option 50, length 4: 192.168.1.131
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Hostname Option 12, length 10: "mininet-vm"
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Parameter-Request Option 55, length 13:
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Subnet-Mask, BR, Time-Zone, Default-Gateway
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Domain-Name, Domain-Name-Server, Option 119, Hostname
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Netbios-Name-Server, Netbios-Scope, MTU, Classless-Static-Route
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NTP
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10:58:32.673025 82:3b:16:e9:bb:17 > 12:07:f8:bf:6e:ff, ethertype IPv4 (0x0800), length 342: (tos 0xc0, ttl 64, id 52738, offset 0, flags [none], proto UDP (17), length 328)
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192.168.1.1.67 > 192.168.1.131.68: [bad udp cksum 0x851a -> 0x5896!] BOOTP/DHCP, Reply, length 300, xid 0xecb5a2e, secs 3, Flags [none] (0x0000)
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Your-IP 192.168.1.131
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Server-IP 192.168.1.1
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Client-Ethernet-Address 12:07:f8:bf:6e:ff
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Vendor-rfc1048 Extensions
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Magic Cookie 0x63825363
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DHCP-Message Option 53, length 1: ACK
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Server-ID Option 54, length 4: 192.168.1.1
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Lease-Time Option 51, length 4: 43200
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RN Option 58, length 4: 21600
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RB Option 59, length 4: 37800
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Subnet-Mask Option 1, length 4: 255.255.255.0
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BR Option 28, length 4: 192.168.1.255
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Hostname Option 12, length 10: "mininet-vm"
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Default-Gateway Option 3, length 4: 192.168.1.1
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10:58:32.678132 82:3b:16:e9:bb:17 > 12:07:f8:bf:6e:ff, ethertype IPv4 (0x0800), length 342: (tos 0xc0, ttl 64, id 52737, offset 0, flags [none], proto UDP (17), length 328)
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192.168.1.1.67 > 192.168.1.131.68: [udp sum ok] BOOTP/DHCP, Reply, length 300, xid 0xecb5a2e, secs 3, Flags [none] (0x0000)
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Your-IP 192.168.1.131
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Server-IP 192.168.1.1
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Client-Ethernet-Address 12:07:f8:bf:6e:ff
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Vendor-rfc1048 Extensions
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Magic Cookie 0x63825363
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DHCP-Message Option 53, length 1: Offer
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Server-ID Option 54, length 4: 192.168.1.1
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Lease-Time Option 51, length 4: 43200
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RN Option 58, length 4: 21600
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RB Option 59, length 4: 37800
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Subnet-Mask Option 1, length 4: 255.255.255.0
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BR Option 28, length 4: 192.168.1.255
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Default-Gateway Option 3, length 4: 192.168.1.1
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10:58:37.831406 82:3b:16:e9:bb:17 > 12:07:f8:bf:6e:ff, ethertype ARP (0x0806), length 42: Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.1.131 tell 192.168.1.1, length 28
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10:58:37.831440 12:07:f8:bf:6e:ff > 82:3b:16:e9:bb:17, ethertype ARP (0x0806), length 42: Ethernet (len 6), IPv4 (len 4), Reply 192.168.1.131 is-at 12:07:f8:bf:6e:ff, length 28
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mininet> exit
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