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Created January 18, 2016 02:24
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MTU experiments - capture of typical ping
Neutron public network router interface (gateway):
20:08:05.126329 7e:27:12:8e:ab:89 > fa:16:3e:1b:0d:d3, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 51810, offset 0, flags [DF], proto ICMP (1), length 84)
10.4.31.1 > 10.4.31.102: ICMP echo request, id 2948, seq 1, length 64
20:08:05.127928 fa:16:3e:1b:0d:d3 > 7e:27:12:8e:ab:89, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 63, id 9661, offset 0, flags [none], proto ICMP (1), length 84)
10.4.31.102 > 10.4.31.1: ICMP echo reply, id 2948, seq 1, length 64
Neutron private network router interface, namespace end of veth pair:
20:08:05.126365 fa:16:3e:1d:d1:a3 > fa:16:3e:bd:bf:3f, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 63, id 51810, offset 0, flags [DF], proto ICMP (1), length 84)
10.4.31.1 > 172.16.1.3: ICMP echo request, id 2948, seq 1, length 64
20:08:05.127910 fa:16:3e:bd:bf:3f > fa:16:3e:1d:d1:a3, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 9661, offset 0, flags [none], proto ICMP (1), length 84)
172.16.1.3 > 10.4.31.1: ICMP echo reply, id 2948, seq 1, length 64
Neutron private network router interface, bridge end of veth pair:
20:08:05.126373 fa:16:3e:1d:d1:a3 > fa:16:3e:bd:bf:3f, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 63, id 51810, offset 0, flags [DF], proto ICMP (1), length 84)
10.4.31.1 > 172.16.1.3: ICMP echo request, id 2948, seq 1, length 64
20:08:05.127903 fa:16:3e:bd:bf:3f > fa:16:3e:1d:d1:a3, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 9661, offset 0, flags [none], proto ICMP (1), length 84)
172.16.1.3 > 10.4.31.1: ICMP echo reply, id 2948, seq 1, length 64
Neutron private network VXLAN interface, controller node end of overlay:
20:08:05.127020 fa:16:3e:1d:d1:a3 > fa:16:3e:bd:bf:3f, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 63, id 51810, offset 0, flags [DF], proto ICMP (1), length 84)
10.4.31.1 > 172.16.1.3: ICMP echo request, id 2948, seq 1, length 64
20:08:05.127638 fa:16:3e:bd:bf:3f > fa:16:3e:1d:d1:a3, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 9661, offset 0, flags [none], proto ICMP (1), length 84)
172.16.1.3 > 10.4.31.1: ICMP echo reply, id 2948, seq 1, length 64
Neutron private network VXLAN interface, compute node end of overlay:
20:08:05.127020 fa:16:3e:1d:d1:a3 (oui Unknown) > fa:16:3e:bd:bf:3f (oui Unknown), ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 63, id 51810, offset 0, flags [DF], proto ICMP (1), length 84)
10.4.31.1 > 172.16.1.3: ICMP echo request, id 2948, seq 1, length 64
20:08:05.127638 fa:16:3e:bd:bf:3f (oui Unknown) > fa:16:3e:1d:d1:a3 (oui Unknown), ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 9661, offset 0, flags [none], proto ICMP (1), length 84)
172.16.1.3 > 10.4.31.1: ICMP echo reply, id 2948, seq 1, length 64
VM, bridge end of tap interface:
20:08:05.127141 fa:16:3e:1d:d1:a3 > fa:16:3e:bd:bf:3f, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 63, id 51810, offset 0, flags [DF], proto ICMP (1), length 84)
10.4.31.1 > 172.16.1.3: ICMP echo request, id 2948, seq 1, length 64
20:08:05.127615 fa:16:3e:bd:bf:3f > fa:16:3e:1d:d1:a3, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 9661, offset 0, flags [none], proto ICMP (1), length 84)
172.16.1.3 > 10.4.31.1: ICMP echo reply, id 2948, seq 1, length 64
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