Number of packets is 16 . --------------------------------------- Input packet 1: First the packet coming in: Router 1, Input Port A4 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 300 ; Ident = 43690 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 63 , Prot = 17 , H.Checksum = 0 ; Source Address: 10.7.0.4 Dest Address: 10.5.16.3 No Options Present. Number of data bytes = 280 . Source Network is: 11 : 10.7.0.0/16 . Destination Network (possibly after SSR rotation) is: 1 : 10.5.16.0/20 . Output Port is: A1 . Next subnet is: 1 : 10.5.16.0/20 . Direct Delivery to interface on network 1 . This may include the case of SSR. Next the fragments going out: Fragment 1: VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 300 ; Ident = 43690 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 62 , Prot = 17 , H.Checksum = 0 ; Source Address: 10.7.0.4 Dest Address: 10.5.16.3 No Options Present. Number of data bytes = 280 . --------------------------------------- Input packet 2: First the packet coming in: Router 1, Input Port A5 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 450 ; Ident = 27184 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 31 , Prot = 17 , H.Checksum = 0 ; Source Address: 10.5.52.0 Dest Address: 10.3.1.6 No Options Present. Number of data bytes = 430 . Source Network is: 5 : 10.5.48.0/20 . Destination Network (possibly after SSR rotation) is: 12 : 10.3.0.0/16 . Output Port is: A3 . Next subnet is: 3 : 10.4.0.0/20 . Forward to Next Port. Next Port is: A21 . Next the fragments going out: Fragment 1: VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 450 ; Ident = 27184 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 30 , Prot = 17 , H.Checksum = 0 ; Source Address: 10.5.52.0 Dest Address: 10.3.1.6 No Options Present. Number of data bytes = 430 . --------------------------------------- Input packet 3: First the packet coming in: Router 1, Input Port A3 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 500 ; Ident = 55555 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 1 , Prot = 17 , H.Checksum = 0 ; Source Address: 10.2.2.6 Dest Address: 10.6.64.8 No Options Present. Number of data bytes = 480 . TTL expired, drop packet, send ICMP. --------------------------------------- Input packet 4: First the packet coming in: Router 1, Input Port A2 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 5000 ; Ident = 37449 , U = 0 , DF = 1 , M = 0 , FragOffset = 0 ; TTL = 42 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.5.3.5 Dest Address: 10.7.1.1 No Options Present. Number of data bytes = 4980 . Source Network is: 2 : 10.5.0.0/20 . Destination Network (possibly after SSR rotation) is: 11 : 10.7.0.0/16 . Output Port is: A4 . Next subnet is: 4 : 10.5.32.0/20 . Total Size > MTU: Fragmentation Required. But DF bit set: drop packet, send ICMP. --------------------------------------- Input packet 5: First the packet coming in: Router 1, Input Port A3 VERS = 4 , HLEN = 10 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 9114 ; Ident = 50115 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 15 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.2.1.5 Dest Address: 10.4.0.1 2 Options Present. Option 1 is 1 : No-Op. Option 2 is 137 : Strict Source Route, Length = 19 , Pointer = 12 . Number of extra SSR addresses is 4 Extra SSR adress 1 is 10.3.8.0 Extra SSR adress 2 is 10.4.8.0 Extra SSR adress 3 is 10.5.40.0 Extra SSR adress 4 is 10.7.5.3 Number of data bytes = 9074 . Source Network is: 13 : 10.2.0.0/20 . Destination Network (possibly after SSR rotation) is: 4 : 10.5.32.0/20 . Destination (possibly after SSR rotation) is Router Port A17 . Output Port is: A4 . Next subnet is: 4 : 10.5.32.0/20 . Direct Delivery to interface on network 4 . This may include the case of SSR. Next the fragments going out: Total Size > MTU: Fragmentation required. Fragment 1: VERS = 4 , HLEN = 10 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 4352 ; Ident = 50115 , U = 0 , DF = 0 , M = 1 , FragOffset = 0 ; TTL = 14 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.2.1.5 Dest Address: 10.5.40.0 2 Options Present. Option 1 is 1 : No-Op. Option 2 is 137 : Strict Source Route, Length = 19 , Pointer = 16 . Number of extra SSR addresses is 4 Extra SSR adress 1 is 10.3.8.0 Extra SSR adress 2 is 10.4.8.0 Extra SSR adress 3 is 10.5.32.1 Extra SSR adress 4 is 10.7.5.3 Number of data bytes = 4312 . Fragment 2: VERS = 4 , HLEN = 10 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 4352 ; Ident = 50115 , U = 0 , DF = 0 , M = 1 , FragOffset = 539 ; TTL = 14 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.2.1.5 Dest Address: 10.5.40.0 2 Options Present. Option 1 is 1 : No-Op. Option 2 is 137 : Strict Source Route, Length = 19 , Pointer = 16 . Number of extra SSR addresses is 4 Extra SSR adress 1 is 10.3.8.0 Extra SSR adress 2 is 10.4.8.0 Extra SSR adress 3 is 10.5.32.1 Extra SSR adress 4 is 10.7.5.3 Number of data bytes = 4312 . Fragment 3: VERS = 4 , HLEN = 10 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 490 ; Ident = 50115 , U = 0 , DF = 0 , M = 0 , FragOffset = 1078 ; TTL = 14 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.2.1.5 Dest Address: 10.5.40.0 2 Options Present. Option 1 is 1 : No-Op. Option 2 is 137 : Strict Source Route, Length = 19 , Pointer = 16 . Number of extra SSR addresses is 4 Extra SSR adress 1 is 10.3.8.0 Extra SSR adress 2 is 10.4.8.0 Extra SSR adress 3 is 10.5.32.1 Extra SSR adress 4 is 10.7.5.3 Number of data bytes = 450 . --------------------------------------- Input packet 6: First the packet coming in: Router 1, Input Port A3 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 10040 ; Ident = 39321 , U = 0 , DF = 0 , M = 1 , FragOffset = 555 ; TTL = 64 , Prot = 17 , H.Checksum = 0 ; Source Address: 10.4.2.1 Dest Address: 10.5.80.4 No Options Present. Number of data bytes = 10020 . Source Network is: 3 : 10.4.0.0/20 . Destination Network (possibly after SSR rotation) is: 7 : 10.5.80.0/20 . Output Port is: A1 . Next subnet is: 1 : 10.5.16.0/20 . Forward to Next Port. Next Port is: A7 . Next the fragments going out: Total Size > MTU: Fragmentation required. Fragment 1: VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 4460 ; Ident = 39321 , U = 0 , DF = 0 , M = 1 , FragOffset = 555 ; TTL = 63 , Prot = 17 , H.Checksum = 0 ; Source Address: 10.4.2.1 Dest Address: 10.5.80.4 No Options Present. Number of data bytes = 4440 . Fragment 2: VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 4460 ; Ident = 39321 , U = 0 , DF = 0 , M = 1 , FragOffset = 1110 ; TTL = 63 , Prot = 17 , H.Checksum = 0 ; Source Address: 10.4.2.1 Dest Address: 10.5.80.4 No Options Present. Number of data bytes = 4440 . Fragment 3: VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 1160 ; Ident = 39321 , U = 0 , DF = 0 , M = 1 , FragOffset = 1665 ; TTL = 63 , Prot = 17 , H.Checksum = 0 ; Source Address: 10.4.2.1 Dest Address: 10.5.80.4 No Options Present. Number of data bytes = 1140 . --------------------------------------- Input packet 7: First the packet coming in: Router 11, Input Port A26 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 540 ; Ident = 12345 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 63 , Prot = 6 , H.Checksum = 0 ; Source Address: 128.243.34.234 Dest Address: 10.5.3.5 No Options Present. Number of data bytes = 520 . Source Network is: 16 : 0.0.0.0/0 . Destination Network (possibly after SSR rotation) is: 2 : 10.5.0.0/20 . Output Port is: A25 . Next subnet is: 13 : 10.2.0.0/20 . Forward to Next Port. Next Port is: A24 . Next the fragments going out: Fragment 1: VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 540 ; Ident = 12345 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 62 , Prot = 6 , H.Checksum = 0 ; Source Address: 128.243.34.234 Dest Address: 10.5.3.5 No Options Present. Number of data bytes = 520 . --------------------------------------- Input packet 8: First the packet coming in: Router 11, Input Port A25 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 255 ; Ident = 54321 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 31 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.5.33.6 Dest Address: 10.9.128.255 No Options Present. Number of data bytes = 235 . Source Network is: 4 : 10.5.32.0/20 . Destination Network (possibly after SSR rotation) is: 15 : 10.0.0.0/8 . Unknown network, drop packet, send ICMP packet. --------------------------------------- Input packet 9: First the packet coming in: Router 11, Input Port A25 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 219 ; Ident = 43690 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 31 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.7.5.5 Dest Address: 128.243.33.233 No Options Present. Number of data bytes = 199 . Source Network is: 11 : 10.7.0.0/16 . Destination Network (possibly after SSR rotation) is: 16 : 0.0.0.0/0 . Output Port is: A26 . Next subnet is: 14 : 10.1.0.0/24 . Forward to Next Port. Next Port is: A27 . Next the fragments going out: Fragment 1: VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 219 ; Ident = 43690 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 30 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.7.5.5 Dest Address: 128.243.33.233 No Options Present. Number of data bytes = 199 . --------------------------------------- Input packet 10: First the packet coming in: Router 1, Input Port A5 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 560 ; Ident = 45600 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 63 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.6.5.8 Dest Address: 128.240.120.50 No Options Present. Number of data bytes = 540 . Source Network is: 9 : 10.6.0.0/18 . Destination Network (possibly after SSR rotation) is: 16 : 0.0.0.0/0 . Output Port is: A3 . Next subnet is: 3 : 10.4.0.0/20 . Forward to Next Port. Next Port is: A21 . Next the fragments going out: Fragment 1: VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 560 ; Ident = 45600 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 62 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.6.5.8 Dest Address: 128.240.120.50 No Options Present. Number of data bytes = 540 . --------------------------------------- Input packet 11: First the packet coming in: Router 1, Input Port A6 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 640 ; Ident = 35540 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 31 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.5.65.7 Dest Address: 10.15.61.255 No Options Present. Number of data bytes = 620 . Source Network is: 6 : 10.5.64.0/20 . Destination Network (possibly after SSR rotation) is: 15 : 10.0.0.0/8 . Output Port is: A3 . Next subnet is: 3 : 10.4.0.0/20 . Forward to Next Port. Next Port is: A21 . Next the fragments going out: Fragment 1: VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 640 ; Ident = 35540 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 30 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.5.65.7 Dest Address: 10.15.61.255 No Options Present. Number of data bytes = 620 . --------------------------------------- Input packet 12: First the packet coming in: Router 1, Input Port A6 VERS = 4 , HLEN = 8 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 820 ; Ident = 45980 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 19 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.5.72.0 Dest Address: 10.5.64.1 2 Options Present. Option 1 is 1 : No-Op. Option 2 is 137 : Strict Source Route, Length = 11 , Pointer = 8 . Number of extra SSR addresses is 2 Extra SSR adress 1 is 10.5.72.0 Extra SSR adress 2 is 10.5.37.1 Number of data bytes = 788 . Source Network is: 6 : 10.5.64.0/20 . Destination Network (possibly after SSR rotation) is: 4 : 10.5.32.0/20 . Output Port is: A4 . Next subnet is: 4 : 10.5.32.0/20 . Direct Delivery to interface on network 4 . This may include the case of SSR. Next the fragments going out: Fragment 1: VERS = 4 , HLEN = 8 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 820 ; Ident = 45980 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 18 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.5.72.0 Dest Address: 10.5.37.1 2 Options Present. Option 1 is 1 : No-Op. Option 2 is 137 : Strict Source Route, Length = 11 , Pointer = 12 . Number of extra SSR addresses is 2 Extra SSR adress 1 is 10.5.72.0 Extra SSR adress 2 is 10.5.32.1 Number of data bytes = 788 . --------------------------------------- Input packet 13: First the packet coming in: Router 1, Input Port A2 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 3400 ; Ident = 43690 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 31 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.5.7.7 Dest Address: 255.255.255.255 No Options Present. Number of data bytes = 3380 . Limited broadcast, to R1 software only. --------------------------------------- Input packet 14: First the packet coming in: Router 1, Input Port A1 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 219 ; Ident = 43690 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 31 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.5.16.5 Dest Address: 10.5.80.3 No Options Present. Number of data bytes = 199 . Input Port equals Output Port and Source Network is directly reachable: send ICMP redirect and route packet: Source Network is: 1 : 10.5.16.0/20 . Destination Network (possibly after SSR rotation) is: 7 : 10.5.80.0/20 . Output Port is: A1 . Next subnet is: 1 : 10.5.16.0/20 . Forward to Next Port. Next Port is: A7 . Next the fragments going out: Fragment 1: VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 219 ; Ident = 43690 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 30 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.5.16.5 Dest Address: 10.5.80.3 No Options Present. Number of data bytes = 199 . --------------------------------------- Input packet 15: First the packet coming in: Router 1, Input Port A5 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 500 ; Ident = 45980 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 19 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.6.0.3 Dest Address: 10.5.15.255 No Options Present. Number of data bytes = 480 . Direct Broadcast, from network 9 to network 2 . To router R1 higher level software and broadcast to network 2 Source Network is: 9 : 10.6.0.0/18 . Destination Network (possibly after SSR rotation) is: 2 : 10.5.0.0/20 . Output Port is: A2 . Next subnet is: 2 : 10.5.0.0/20 . Direct Delivery to interface on network 2 . This may include the case of SSR. Next the fragments going out: Fragment 1: VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 500 ; Ident = 45980 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 18 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.6.0.3 Dest Address: 10.5.15.255 No Options Present. Number of data bytes = 480 . --------------------------------------- Input packet 16: First the packet coming in: Router 1, Input Port A4 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 1060 ; Ident = 45980 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 19 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.5.32.3 Dest Address: 10.5.47.255 No Options Present. Number of data bytes = 1040 . Direct Broadcast, from destination net: to R1 Software only.