11 Input Packets -------------------------------- Input packet 1: Input Port: A1 First the packet coming in: VERS = 4, HLEN = 5, ToS = 0, TL = 255 Ident = 43690, Flags = 0, DF = 0, More = 0, FragOffset = 0 TTL = 31, PROT = 17, CheckS = 0 SourceAddr = 153.153.243.15 DestAddr = 153.153.32.240 Number of data bytes = 235 Dest Network = 3: 153.153.32.0/20 Output Port A3, direct delivery to host on network III. Next the packet(s) going out: Fragment 1 VERS = 4, HLEN = 5, ToS = 0, TL = 255 Ident = 43690, Flags = 0, FragOffset = 0 TTL = 30, PROT = 17, CheckS = 0 SourceAddr = 153.153.243.15 DestAddr = 153.153.32.240 DataField = 235 bytes --------------------------- Input packet 2: Input Port: A1 First the packet coming in: VERS = 4, HLEN = 5, ToS = 0, TL = 341 Ident = 43690, Flags = 0, DF = 0, More = 0, FragOffset = 0 TTL = 31, PROT = 17, CheckS = 0 SourceAddr = 153.153.243.15 DestAddr = 153.153.51.51 Number of data bytes = 321 Dest Network = 4: 153.153.48.0/20 Output Port A2, forward to A5 on R2. Next the packet(s) going out: Fragment 1 VERS = 4, HLEN = 5, ToS = 0, TL = 341 Ident = 43690, Flags = 0, FragOffset = 0 TTL = 30, PROT = 17, CheckS = 0 SourceAddr = 153.153.243.15 DestAddr = 153.153.51.51 DataField = 321 bytes --------------------------- Input packet 3: Input Port: A3 First the packet coming in: VERS = 4, HLEN = 5, ToS = 0, TL = 219 Ident = 43690, Flags = 0, DF = 0, More = 0, FragOffset = 0 TTL = 31, PROT = 6, CheckS = 0 SourceAddr = 153.153.128.85 DestAddr = 153.153.243.1 Number of data bytes = 199 For R1 itself: To higher level software --------------------------- Input packet 4: Input Port: A4 First the packet coming in: VERS = 4, HLEN = 9, ToS = 0, TL = 682 Ident = 43690, Flags = 0, DF = 0, More = 0, FragOffset = 0 TTL = 31, PROT = 6, CheckS = 0 SourceAddr = 153.153.245.37 DestAddr = 153.153.8.0 Option 1 = 1, Option 2 = 137, L = 15, P = 8 extra Address 1 = 153.153.0.1 extra Address 2 = 153.153.16.2 extra Address 3 = 153.153.51.51 Number of data bytes = 646 Strict Source Route, OK thus far, Next Network = 2: 153.153.16.0/20 Output Port A2, direct delivery to host on network II. Next address had better be a router Next the packet(s) going out: Fragment 1 VERS = 4, HLEN = 9, ToS = 0, TL = 682 Ident = 43690, Flags = 0, FragOffset = 0 TTL = 30, PROT = 6, CheckS = 0 SourceAddr = 153.153.245.37 DestAddr = 153.153.16.2 Option1 = 1, Option2 = 137, L = 15, P = 12 extra Address 1 = 153.153.0.1 extra Address 2 = 153.153.24.0 extra Address 3 = 153.153.51.51 DataField = 646 bytes --------------------------- Input packet 5: Input Port: A3 First the packet coming in: VERS = 4, HLEN = 5, ToS = 0, TL = 10922 Ident = 37449, Flags = 0, DF = 0, More = 0, FragOffset = 0 TTL = 42, PROT = 6, CheckS = 0 SourceAddr = 153.153.241.102 DestAddr = 153.153.242.60 Number of data bytes = 10902 Dest Network = 10: 153.153.242.0/24 Output Port A1, forward to A17 on R9. Next the packet(s) going out: Fragment 1 VERS = 4, HLEN = 5, ToS = 0, TL = 1500 Ident = 37449, Flags = 1, FragOffset = 0 TTL = 41, PROT = 6, CheckS = 0 SourceAddr = 153.153.241.102 DestAddr = 153.153.242.60 DataField = 1480 bytes Fragment 2 VERS = 4, HLEN = 5, ToS = 0, TL = 1500 Ident = 37449, Flags = 1, FragOffset = 185 TTL = 41, PROT = 6, CheckS = 0 SourceAddr = 153.153.241.102 DestAddr = 153.153.242.60 DataField = 1480 bytes Fragment 3 VERS = 4, HLEN = 5, ToS = 0, TL = 1500 Ident = 37449, Flags = 1, FragOffset = 370 TTL = 41, PROT = 6, CheckS = 0 SourceAddr = 153.153.241.102 DestAddr = 153.153.242.60 DataField = 1480 bytes Fragment 4 VERS = 4, HLEN = 5, ToS = 0, TL = 1500 Ident = 37449, Flags = 1, FragOffset = 555 TTL = 41, PROT = 6, CheckS = 0 SourceAddr = 153.153.241.102 DestAddr = 153.153.242.60 DataField = 1480 bytes Fragment 5 VERS = 4, HLEN = 5, ToS = 0, TL = 1500 Ident = 37449, Flags = 1, FragOffset = 740 TTL = 41, PROT = 6, CheckS = 0 SourceAddr = 153.153.241.102 DestAddr = 153.153.242.60 DataField = 1480 bytes Fragment 6 VERS = 4, HLEN = 5, ToS = 0, TL = 1500 Ident = 37449, Flags = 1, FragOffset = 925 TTL = 41, PROT = 6, CheckS = 0 SourceAddr = 153.153.241.102 DestAddr = 153.153.242.60 DataField = 1480 bytes Fragment 7 VERS = 4, HLEN = 5, ToS = 0, TL = 1500 Ident = 37449, Flags = 1, FragOffset = 1110 TTL = 41, PROT = 6, CheckS = 0 SourceAddr = 153.153.241.102 DestAddr = 153.153.242.60 DataField = 1480 bytes Fragment 8 VERS = 4, HLEN = 5, ToS = 0, TL = 562 Ident = 37449, Flags = 0, FragOffset = 1295 TTL = 41, PROT = 6, CheckS = 0 SourceAddr = 153.153.241.102 DestAddr = 153.153.242.60 DataField = 542 bytes --------------------------- Input packet 6: Input Port: A3 First the packet coming in: VERS = 4, HLEN = 5, ToS = 0, TL = 219 Ident = 43690, Flags = 0, DF = 0, More = 0, FragOffset = 0 TTL = 31, PROT = 6, CheckS = 0 SourceAddr = 153.153.128.85 DestAddr = 153.153.31.255 Number of data bytes = 199 To R1 software AND Output port A2, Directed Broadcast to network 2. Next the packet(s) going out: Fragment 1 VERS = 4, HLEN = 5, ToS = 0, TL = 219 Ident = 43690, Flags = 0, FragOffset = 0 TTL = 30, PROT = 6, CheckS = 0 SourceAddr = 153.153.128.85 DestAddr = 153.153.31.255 DataField = 199 bytes --------------------------- Input packet 7: Input Port: A4 First the packet coming in: VERS = 4, HLEN = 8, ToS = 0, TL = 650 Ident = 43690, Flags = 0, DF = 0, More = 0, FragOffset = 0 TTL = 27, PROT = 6, CheckS = 0 SourceAddr = 153.153.245.41 DestAddr = 153.153.8.0 Option 1 = 1, Option 2 = 137, L = 11, P = 8 extra Address 1 = 153.153.0.1 extra Address 2 = 153.153.16.2 Number of data bytes = 618 Strict Source Route, OK thus far, Next Network = 2: 153.153.16.0/20 Output Port A2, direct delivery to host on network II. Next address can be either host or router Next the packet(s) going out: Fragment 1 VERS = 4, HLEN = 8, ToS = 0, TL = 650 Ident = 43690, Flags = 0, FragOffset = 0 TTL = 26, PROT = 6, CheckS = 0 SourceAddr = 153.153.245.41 DestAddr = 153.153.16.2 Option1 = 1, Option2 = 137, L = 11, P = 12 extra Address 1 = 153.153.0.1 extra Address 2 = 153.153.24.0 DataField = 618 bytes --------------------------- Input packet 8: Input Port: A2 First the packet coming in: VERS = 4, HLEN = 5, ToS = 0, TL = 4348 Ident = 39321, Flags = 1, DF = 0, More = 1, FragOffset = 541 TTL = 64, PROT = 17, CheckS = 0 SourceAddr = 153.153.100.4 DestAddr = 153.153.242.85 Number of data bytes = 4328 Dest Network = 10: 153.153.242.0/24 Output Port A1, forward to A17 on R9. Next the packet(s) going out: Fragment 1 VERS = 4, HLEN = 5, ToS = 0, TL = 1500 Ident = 39321, Flags = 1, FragOffset = 541 TTL = 63, PROT = 17, CheckS = 0 SourceAddr = 153.153.100.4 DestAddr = 153.153.242.85 DataField = 1480 bytes Fragment 2 VERS = 4, HLEN = 5, ToS = 0, TL = 1500 Ident = 39321, Flags = 1, FragOffset = 726 TTL = 63, PROT = 17, CheckS = 0 SourceAddr = 153.153.100.4 DestAddr = 153.153.242.85 DataField = 1480 bytes Fragment 3 VERS = 4, HLEN = 5, ToS = 0, TL = 1388 Ident = 39321, Flags = 1, FragOffset = 911 TTL = 63, PROT = 17, CheckS = 0 SourceAddr = 153.153.100.4 DestAddr = 153.153.242.85 DataField = 1368 bytes --------------------------- Input packet 9: Input Port: A3 First the packet coming in: VERS = 4, HLEN = 5, ToS = 0, TL = 10922 Ident = 37449, Flags = 2, DF = 1, More = 0, FragOffset = 0 TTL = 42, PROT = 6, CheckS = 0 SourceAddr = 153.153.241.102 DestAddr = 153.153.242.60 Number of data bytes = 10902 DF set and packet too large. Drop packet and send ICMP --------------------------- Input packet 10: Input Port: A2 First the packet coming in: VERS = 4, HLEN = 5, ToS = 0, TL = 4348 Ident = 39321, Flags = 0, DF = 0, More = 0, FragOffset = 541 TTL = 64, PROT = 17, CheckS = 0 SourceAddr = 153.153.100.4 DestAddr = 153.153.242.85 Number of data bytes = 4328 Dest Network = 10: 153.153.242.0/24 Output Port A1, forward to A17 on R9. Next the packet(s) going out: Fragment 1 VERS = 4, HLEN = 5, ToS = 0, TL = 1500 Ident = 39321, Flags = 1, FragOffset = 541 TTL = 63, PROT = 17, CheckS = 0 SourceAddr = 153.153.100.4 DestAddr = 153.153.242.85 DataField = 1480 bytes Fragment 2 VERS = 4, HLEN = 5, ToS = 0, TL = 1500 Ident = 39321, Flags = 1, FragOffset = 726 TTL = 63, PROT = 17, CheckS = 0 SourceAddr = 153.153.100.4 DestAddr = 153.153.242.85 DataField = 1480 bytes Fragment 3 VERS = 4, HLEN = 5, ToS = 0, TL = 1388 Ident = 39321, Flags = 0, FragOffset = 911 TTL = 63, PROT = 17, CheckS = 0 SourceAddr = 153.153.100.4 DestAddr = 153.153.242.85 DataField = 1368 bytes --------------------------- Input packet 11: Input Port: A2 First the packet coming in: VERS = 4, HLEN = 5, ToS = 0, TL = 219 Ident = 43690, Flags = 0, DF = 0, More = 0, FragOffset = 0 TTL = 31, PROT = 6, CheckS = 0 SourceAddr = 153.153.21.85 DestAddr = 153.153.31.255 Number of data bytes = 199 directed broadcast to network 2, from network 2. To R1 software only. ---------------------------