Number of packets is 22 . --------------------------------------- Input packet 0: First the packet coming in: Router 1, Input Port A1 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 1500 ; Ident = 54634 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 85 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.1.0.14 Dest Address: 10.3.0.14 No Options Present. Number of data bytes = 1480 . Source Network is: 1 : 10.1.0.0/24 . Destination Network (possibly after SSR rotation) is: 5 : 10.3.0.0/24 . Output Port is: A6 . Next subnet is: 5 : 10.3.0.0/24 . Direct Delivery to interface on network 5 . 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 = 1500 ; Ident = 54634 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 84 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.1.0.14 Dest Address: 10.3.0.14 No Options Present. Number of data bytes = 1480 . --------------------------------------- Input packet 1: First the packet coming in: Router 1, Input Port A4 VERS = 4 , HLEN = 10 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 1500 ; Ident = 43178 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 4 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.4.0.51 Dest Address: 10.4.1.1 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 10.4.25.2 Extra SSR adress 2 is 10.4.2.2 Extra SSR adress 3 is 10.2.9.0 Extra SSR adress 4 is 10.2.32.52 Number of data bytes = 1460 . Source Network is: 12 : 10.4.0.0/24 . Destination Network (possibly after SSR rotation) is: 2 : 10.2.0.0/20 . Destination (possibly after SSR rotation) is Router Port A7 . Output Port is: A2 . Next subnet is: 2 : 10.2.0.0/20 . Direct Delivery to interface on network 2 . This may include the case of SSR. Next the fragments going out: Fragment 1: VERS = 4 , HLEN = 10 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 1500 ; Ident = 43178 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 3 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.4.0.51 Dest Address: 10.2.9.0 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 10.4.25.2 Extra SSR adress 2 is 10.4.2.2 Extra SSR adress 3 is 10.2.0.1 Extra SSR adress 4 is 10.2.32.52 Number of data bytes = 1460 . --------------------------------------- Input packet 2: First the packet coming in: Router 1, Input Port A5 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 4352 ; Ident = 43181 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 248 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.3.1.30 Dest Address: 128.235.32.51 No Options Present. Number of data bytes = 4332 . Source Network is: 6 : 10.3.1.0/24 . Destination Network (possibly after SSR rotation) is: 15 : 0.0.0.0/0 . Output Port is: A2 . Next subnet is: 2 : 10.2.0.0/20 . 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 = 4352 ; Ident = 43181 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 247 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.3.1.30 Dest Address: 128.235.32.51 No Options Present. Number of data bytes = 4332 . --------------------------------------- Input packet 3: First the packet coming in: Router 3, Input Port A9 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 4352 ; Ident = 43181 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 248 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.3.1.30 Dest Address: 128.235.32.51 No Options Present. Number of data bytes = 4332 . Source Network is: 6 : 10.3.1.0/24 . Destination Network (possibly after SSR rotation) is: 15 : 0.0.0.0/0 . Output Port is: A10 . Next subnet is: 4 : 10.2.64.0/20 . Forward to Next Port. Next Port is: A11 . Next the fragments going out: Fragment 1: VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 4352 ; Ident = 43181 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 247 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.3.1.30 Dest Address: 128.235.32.51 No Options Present. Number of data bytes = 4332 . --------------------------------------- Input packet 4: First the packet coming in: Router 1, Input Port A5 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 4352 ; Ident = 43181 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 248 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.3.1.30 Dest Address: 10.16.12.21 No Options Present. Number of data bytes = 4332 . Source Network is: 6 : 10.3.1.0/24 . Destination Network (possibly after SSR rotation) is: 14 : 10.0.0.0/8 . Output Port is: A2 . Next subnet is: 2 : 10.2.0.0/20 . 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 = 4352 ; Ident = 43181 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 247 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.3.1.30 Dest Address: 10.16.12.21 No Options Present. Number of data bytes = 4332 . --------------------------------------- Input packet 5: First the packet coming in: Router 3, Input Port A9 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 4352 ; Ident = 43181 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 248 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.3.1.30 Dest Address: 10.16.12.21 No Options Present. Number of data bytes = 4332 . Source Network is: 6 : 10.3.1.0/24 . Destination Network (possibly after SSR rotation) is: 14 : 10.0.0.0/8 . Unknown network, drop packet, send ICMP packet. --------------------------------------- Input packet 6: First the packet coming in: Router 1, Input Port A3 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 4352 ; Ident = 22184 , U = 0 , DF = 1 , M = 0 , FragOffset = 0 ; TTL = 10 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.4.16.255 Dest Address: 10.3.2.28 No Options Present. Number of data bytes = 4332 . Source Network is: 10 : 10.4.16.0/22 . Destination Network (possibly after SSR rotation) is: 7 : 10.3.2.0/24 . Output Port is: A5 . Next subnet is: 6 : 10.3.1.0/24 . Forward to Next Port. Next Port is: A13 . Next the fragments going out: Fragment 1: VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 4352 ; Ident = 22184 , U = 0 , DF = 1 , M = 0 , FragOffset = 0 ; TTL = 9 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.4.16.255 Dest Address: 10.3.2.28 No Options Present. Number of data bytes = 4332 . --------------------------------------- Input packet 7: First the packet coming in: Router 1, Input Port A3 VERS = 4 , HLEN = 10 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 1500 ; Ident = 11221 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 28 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.4.0.14 Dest Address: 10.4.8.1 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 10.4.18.2 Extra SSR adress 2 is 10.4.9.2 Extra SSR adress 3 is 10.3.0.17 Extra SSR adress 4 is 10.3.2.28 Number of data bytes = 1460 . Source Network is: 12 : 10.4.0.0/24 . Destination Network (possibly after SSR rotation) is: 5 : 10.3.0.0/24 . Destination (possibly after SSR rotation) is Router Port A12 . Output Port is: A6 . Next subnet is: 5 : 10.3.0.0/24 . Direct Delivery to interface on network 5 . This may include the case of SSR. Next the fragments going out: Fragment 1: VERS = 4 , HLEN = 10 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 1500 ; Ident = 11221 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 27 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.4.0.14 Dest Address: 10.3.0.17 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 10.4.18.2 Extra SSR adress 2 is 10.4.9.2 Extra SSR adress 3 is 10.3.0.1 Extra SSR adress 4 is 10.3.2.28 Number of data bytes = 1460 . --------------------------------------- Input packet 8: First the packet coming in: Router 1, Input Port A6 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 1500 ; Ident = 22202 , U = 0 , DF = 1 , M = 0 , FragOffset = 0 ; TTL = 33 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.3.0.241 Dest Address: 10.4.16.23 No Options Present. Number of data bytes = 1480 . Source Network is: 5 : 10.3.0.0/24 . Destination Network (possibly after SSR rotation) is: 10 : 10.4.16.0/22 . Output Port is: A3 . Next subnet is: 9 : 10.4.8.0/22 . Forward to Next Port. Next Port is: A16 . Next the fragments going out: Fragment 1: VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 1500 ; Ident = 22202 , U = 0 , DF = 1 , M = 0 , FragOffset = 0 ; TTL = 32 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.3.0.241 Dest Address: 10.4.16.23 No Options Present. Number of data bytes = 1480 . --------------------------------------- Input packet 9: First the packet coming in: Router 1, Input Port A6 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 1500 ; Ident = 22202 , U = 0 , DF = 1 , M = 0 , FragOffset = 0 ; TTL = 1 , Prot = 6 , H.Checksum = 0 ; Source Address: 1.3.0.241 Dest Address: 10.4.16.23 No Options Present. Number of data bytes = 1480 . TTL expired, drop packet, send ICMP. --------------------------------------- Input packet 10: First the packet coming in: Router 1, Input Port A6 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 1500 ; Ident = 22202 , U = 0 , DF = 1 , M = 0 , FragOffset = 0 ; TTL = 1 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.3.0.241 Dest Address: 10.3.0.1 No Options Present. Number of data bytes = 1480 . Packet destined for router R=1, to higher level software. --------------------------------------- Input packet 11: First the packet coming in: Router 1, Input Port A6 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 1500 ; Ident = 22202 , U = 0 , DF = 1 , M = 0 , FragOffset = 0 ; TTL = 60 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.3.0.241 Dest Address: 10.2.0.1 No Options Present. Number of data bytes = 1480 . Packet destined for router R=1, to higher level software. --------------------------------------- Input packet 12: First the packet coming in: Router 3, Input Port A9 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 1500 ; Ident = 22202 , U = 0 , DF = 1 , M = 0 , FragOffset = 0 ; TTL = 60 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.2.32.29 Dest Address: 255.255.255.255 No Options Present. Number of data bytes = 1480 . Limited broadcast, to R3 software only. --------------------------------------- Input packet 13: First the packet coming in: Router 1, Input Port A2 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 1500 ; Ident = 11602 , U = 0 , DF = 1 , M = 0 , FragOffset = 0 ; TTL = 15 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.2.0.31 Dest Address: 10.2.15.255 No Options Present. Number of data bytes = 1480 . Direct Broadcast, from destination net: to R1 Software only. --------------------------------------- Input packet 14: First the packet coming in: Router 1, Input Port A2 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 1500 ; Ident = 11602 , U = 0 , DF = 1 , M = 0 , FragOffset = 0 ; TTL = 15 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.2.0.31 Dest Address: 10.4.11.255 No Options Present. Number of data bytes = 1480 . Direct Broadcast, from network 2 to network 9 . To router R1 higher level software and broadcast to network 9 Source Network is: 2 : 10.2.0.0/20 . Destination Network (possibly after SSR rotation) is: 9 : 10.4.8.0/22 . Output Port is: A3 . Next subnet is: 9 : 10.4.8.0/22 . Direct Delivery to interface on network 9 . 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 = 1500 ; Ident = 11602 , U = 0 , DF = 1 , M = 0 , FragOffset = 0 ; TTL = 14 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.2.0.31 Dest Address: 10.4.11.255 No Options Present. Number of data bytes = 1480 . --------------------------------------- Input packet 15: First the packet coming in: Router 1, Input Port A4 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 1500 ; Ident = 23380 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 14 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.10.1.14 Dest Address: 10.1.0.14 No Options Present. Number of data bytes = 1480 . Source Network is: 13 : 10.10.1.0/24 . Destination Network (possibly after SSR rotation) is: 1 : 10.1.0.0/24 . Output Port is: A1 . Next subnet is: 1 : 10.1.0.0/24 . Direct Delivery to interface on network 1 . This may include the case of SSR. Next the fragments going out: Total Size > MTU: Fragmentation required. Fragment 1: VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 572 ; Ident = 23380 , U = 0 , DF = 0 , M = 1 , FragOffset = 0 ; TTL = 13 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.10.1.14 Dest Address: 10.1.0.14 No Options Present. Number of data bytes = 552 . Fragment 2: VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 572 ; Ident = 23380 , U = 0 , DF = 0 , M = 1 , FragOffset = 69 ; TTL = 13 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.10.1.14 Dest Address: 10.1.0.14 No Options Present. Number of data bytes = 552 . Fragment 3: VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 396 ; Ident = 23380 , U = 0 , DF = 0 , M = 0 , FragOffset = 138 ; TTL = 13 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.10.1.14 Dest Address: 10.1.0.14 No Options Present. Number of data bytes = 376 . --------------------------------------- Input packet 16: First the packet coming in: Router 1, Input Port A3 VERS = 4 , HLEN = 9 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 4464 ; Ident = 43862 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 10 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.4.16.14 Dest Address: 10.4.8.1 2 Options Present. Option 1 is 1 : No-Op. Option 2 is 137 : Strict Source Route, Length = 15 , Pointer = 8 . Number of extra SSR addresses is 3 Extra SSR adress 1 is 10.4.9.2 Extra SSR adress 2 is 10.3.0.17 Extra SSR adress 3 is 10.3.2.10 Number of data bytes = 4428 . Source Network is: 10 : 10.4.16.0/22 . Destination Network (possibly after SSR rotation) is: 5 : 10.3.0.0/24 . Destination (possibly after SSR rotation) is Router Port A12 . Output Port is: A6 . Next subnet is: 5 : 10.3.0.0/24 . Direct Delivery to interface on network 5 . This may include the case of SSR. Next the fragments going out: Total Size > MTU: Fragmentation required. Fragment 1: VERS = 4 , HLEN = 9 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 1500 ; Ident = 43862 , U = 0 , DF = 0 , M = 1 , FragOffset = 0 ; TTL = 9 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.4.16.14 Dest Address: 10.3.0.17 2 Options Present. Option 1 is 1 : No-Op. Option 2 is 137 : Strict Source Route, Length = 15 , Pointer = 12 . Number of extra SSR addresses is 3 Extra SSR adress 1 is 10.4.9.2 Extra SSR adress 2 is 10.3.0.1 Extra SSR adress 3 is 10.3.2.10 Number of data bytes = 1464 . Fragment 2: VERS = 4 , HLEN = 9 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 1500 ; Ident = 43862 , U = 0 , DF = 0 , M = 1 , FragOffset = 183 ; TTL = 9 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.4.16.14 Dest Address: 10.3.0.17 2 Options Present. Option 1 is 1 : No-Op. Option 2 is 137 : Strict Source Route, Length = 15 , Pointer = 12 . Number of extra SSR addresses is 3 Extra SSR adress 1 is 10.4.9.2 Extra SSR adress 2 is 10.3.0.1 Extra SSR adress 3 is 10.3.2.10 Number of data bytes = 1464 . Fragment 3: VERS = 4 , HLEN = 9 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 1500 ; Ident = 43862 , U = 0 , DF = 0 , M = 1 , FragOffset = 366 ; TTL = 9 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.4.16.14 Dest Address: 10.3.0.17 2 Options Present. Option 1 is 1 : No-Op. Option 2 is 137 : Strict Source Route, Length = 15 , Pointer = 12 . Number of extra SSR addresses is 3 Extra SSR adress 1 is 10.4.9.2 Extra SSR adress 2 is 10.3.0.1 Extra SSR adress 3 is 10.3.2.10 Number of data bytes = 1464 . Fragment 4: VERS = 4 , HLEN = 9 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 72 ; Ident = 43862 , U = 0 , DF = 0 , M = 0 , FragOffset = 549 ; TTL = 9 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.4.16.14 Dest Address: 10.3.0.17 2 Options Present. Option 1 is 1 : No-Op. Option 2 is 137 : Strict Source Route, Length = 15 , Pointer = 12 . Number of extra SSR addresses is 3 Extra SSR adress 1 is 10.4.9.2 Extra SSR adress 2 is 10.3.0.1 Extra SSR adress 3 is 10.3.2.10 Number of data bytes = 36 . --------------------------------------- Input packet 17: First the packet coming in: Router 1, Input Port A3 VERS = 4 , HLEN = 9 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 4464 ; Ident = 43862 , U = 0 , DF = 1 , M = 0 , FragOffset = 0 ; TTL = 10 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.4.16.14 Dest Address: 10.4.8.1 2 Options Present. Option 1 is 1 : No-Op. Option 2 is 137 : Strict Source Route, Length = 15 , Pointer = 8 . Number of extra SSR addresses is 3 Extra SSR adress 1 is 10.4.9.2 Extra SSR adress 2 is 10.3.0.17 Extra SSR adress 3 is 10.3.2.10 Number of data bytes = 4428 . Source Network is: 10 : 10.4.16.0/22 . Destination Network (possibly after SSR rotation) is: 5 : 10.3.0.0/24 . Destination (possibly after SSR rotation) is Router Port A12 . Output Port is: A6 . Next subnet is: 5 : 10.3.0.0/24 . Total Size > MTU: Fragmentation Required. But DF bit set: drop packet, send ICMP. --------------------------------------- Input packet 18: First the packet coming in: Router 1, Input Port A3 VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 17336 ; Ident = 44378 , U = 0 , DF = 0 , M = 1 , FragOffset = 0 ; TTL = 51 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.4.8.51 Dest Address: 10.3.1.12 No Options Present. Number of data bytes = 17316 . Source Network is: 9 : 10.4.8.0/22 . Destination Network (possibly after SSR rotation) is: 6 : 10.3.1.0/24 . Output Port is: A5 . Next subnet is: 6 : 10.3.1.0/24 . Direct Delivery to interface on network 6 . This may include the case of SSR. Next the fragments going out: Total Size > MTU: Fragmentation required. Fragment 1: VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 4348 ; Ident = 44378 , U = 0 , DF = 0 , M = 1 , FragOffset = 0 ; TTL = 50 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.4.8.51 Dest Address: 10.3.1.12 No Options Present. Number of data bytes = 4328 . Fragment 2: VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 4348 ; Ident = 44378 , U = 0 , DF = 0 , M = 1 , FragOffset = 541 ; TTL = 50 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.4.8.51 Dest Address: 10.3.1.12 No Options Present. Number of data bytes = 4328 . Fragment 3: VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 4348 ; Ident = 44378 , U = 0 , DF = 0 , M = 1 , FragOffset = 1082 ; TTL = 50 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.4.8.51 Dest Address: 10.3.1.12 No Options Present. Number of data bytes = 4328 . Fragment 4: VERS = 4 , HLEN = 5 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 4352 ; Ident = 44378 , U = 0 , DF = 0 , M = 1 , FragOffset = 1623 ; TTL = 50 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.4.8.51 Dest Address: 10.3.1.12 No Options Present. Number of data bytes = 4332 . --------------------------------------- Input packet 19: First the packet coming in: Router 1, Input Port A4 VERS = 4 , HLEN = 9 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 1500 ; Ident = 43178 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 4 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.4.0.51 Dest Address: 10.4.1.1 2 Options Present. Option 1 is 1 : No-Op. Option 2 is 137 : Strict Source Route, Length = 15 , Pointer = 12 . Number of extra SSR addresses is 3 Extra SSR adress 1 is 10.4.25.2 Extra SSR adress 2 is 10.4.2.2 Extra SSR adress 3 is 10.2.32.52 Number of data bytes = 1464 . Source Network is: 12 : 10.4.0.0/24 . Destination Network (possibly after SSR rotation) is: 3 : 10.2.32.0/20 . Output Port is: A2 . Next subnet is: 2 : 10.2.0.0/20 . Forward to Next Port. Next Port is: A7 . Next the fragments going out: Fragment 1: VERS = 4 , HLEN = 9 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 1500 ; Ident = 43178 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 3 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.4.0.51 Dest Address: 10.2.32.52 2 Options Present. Option 1 is 1 : No-Op. Option 2 is 137 : Strict Source Route, Length = 15 , Pointer = 16 . Number of extra SSR addresses is 3 Extra SSR adress 1 is 10.4.25.2 Extra SSR adress 2 is 10.4.2.2 Extra SSR adress 3 is 10.2.0.1 Number of data bytes = 1464 . --------------------------------------- Input packet 20: First the packet coming in: Router 1, Input Port A4 VERS = 4 , HLEN = 10 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 1500 ; Ident = 43178 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 4 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.4.0.51 Dest Address: 10.4.1.1 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 10.4.25.2 Extra SSR adress 2 is 10.4.2.2 Extra SSR adress 3 is 10.2.41.0 Extra SSR adress 4 is 10.2.64.255 Number of data bytes = 1460 . Strict Source Route and next address not Directly Reachable: drop packet, send ICMP. --------------------------------------- Input packet 21: First the packet coming in: Router 1, Input Port A4 VERS = 4 , HLEN = 8 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 1500 ; Ident = 43178 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 4 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.4.0.51 Dest Address: 10.2.41.0 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 10.4.25.2 Extra SSR adress 2 is 10.4.2.2 Number of data bytes = 1468 . Source Network is: 12 : 10.4.0.0/24 . Destination Network (possibly after SSR rotation) is: 3 : 10.2.32.0/20 . Destination (possibly after SSR rotation) is Router Port A9 . Output Port is: A2 . Next subnet is: 2 : 10.2.0.0/20 . Forward to Next Port. Next Port is: A7 . Next the fragments going out: Fragment 1: VERS = 4 , HLEN = 8 , DSCP = 0 , ECT = 0 , CE = 0 , TL = 1500 ; Ident = 43178 , U = 0 , DF = 0 , M = 0 , FragOffset = 0 ; TTL = 3 , Prot = 6 , H.Checksum = 0 ; Source Address: 10.4.0.51 Dest Address: 10.2.41.0 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 10.4.25.2 Extra SSR adress 2 is 10.4.2.2 Number of data bytes = 1468 .