1 1 10:17:05.850284 MPLS (label 100656, tc 6, [S], ttl 64) 2 IP (tos 0xc0, ttl 64, id 40719, offset 0, flags [none], proto TCP (6), length 71) 3 12.4.4.4.4100 > 12.8.8.8.179: Flags [P.], cksum 0xfd1b (correct), seq 1860641958:1860641977, ack 2969468967, win 16384, options [nop,nop,TS val 84784152 ecr 84770238], length 19: BGP 4 Keepalive Message (4), length: 19 5 2 10:17:08.118493 MPLS (label 100688, tc 7, [S], ttl 255) 6 IP (tos 0x0, ttl 64, id 40723, offset 0, flags [none], proto UDP (17), length 76) 7 12.4.4.4.4786 > 127.0.0.1.3503: [udp sum ok] 8 LSP-PINGv1, msg-type: MPLS Echo Request (1), length: 48 9 reply-mode: Reply via an IPv4/IPv6 UDP packet (2) 10 Return Code: No return code or return code contained in the Error Code TLV (0) 11 Return Subcode: (0) 12 Sender Handle: 0x00000000, Sequence: 1 13 Sender Timestamp: 1087208228.000027564 (1934-06-15T10:17:08Z) Receiver Timestamp: no timestamp 14 Target FEC Stack TLV (1), length: 12 15 LDP IPv4 prefix subTLV (1), length: 5 16 12.1.1.1/32 17 0x0000: 0c01 0101 20 18 0x0000: 0001 0005 0c01 0101 2000 0000 19 3 10:17:08.119504 IP (tos 0xc0, ttl 62, id 50878, offset 0, flags [none], proto UDP (17), length 60) 20 10.20.0.1.3503 > 12.4.4.4.4786: [udp sum ok] 21 LSP-PINGv1, msg-type: MPLS Echo Reply (2), length: 32 22 reply-mode: Reply via an IPv4/IPv6 UDP packet (2) 23 Return Code: Replying router is an egress for the FEC at stack depth 0 (3) 24 Return Subcode: (0) 25 Sender Handle: 0x00000000, Sequence: 1 26 Sender Timestamp: 1087208228.000027564 (1934-06-15T10:17:08Z) Receiver Timestamp: 1087208228.000027928 (1934-06-15T10:17:08Z) 27 4 10:17:08.878375 MPLS (label 100704, tc 6, [S], ttl 64) 28 IP (tos 0xc0, ttl 64, id 40725, offset 0, flags [none], proto TCP (6), length 71) 29 12.4.4.4.2006 > 12.1.1.1.179: Flags [P.], cksum 0x6c0d (correct), seq 399708866:399708885, ack 708613212, win 16384, options [nop,nop,TS val 84784455 ecr 130411], length 19: BGP 30 Keepalive Message (4), length: 19 31 5 10:17:08.978295 MPLS (label 100704, tc 6, [S], ttl 64) 32 IP (tos 0xc0, ttl 64, id 40726, offset 0, flags [none], proto TCP (6), length 52) 33 12.4.4.4.2006 > 12.1.1.1.179: Flags [.], cksum 0x6451 (correct), seq 19, ack 20, win 16384, options [nop,nop,TS val 84784465 ecr 133413], length 0 34 6 10:17:09.128397 MPLS (label 100688, tc 7, [S], ttl 255) 35 IP (tos 0x0, ttl 64, id 40727, offset 0, flags [none], proto UDP (17), length 76) 36 12.4.4.4.4786 > 127.0.0.1.3503: [udp sum ok] 37 LSP-PINGv1, msg-type: MPLS Echo Request (1), length: 48 38 reply-mode: Reply via an IPv4/IPv6 UDP packet (2) 39 Return Code: No return code or return code contained in the Error Code TLV (0) 40 Return Subcode: (0) 41 Sender Handle: 0x00000000, Sequence: 2 42 Sender Timestamp: 1087208229.000029880 (1934-06-15T10:17:09Z) Receiver Timestamp: no timestamp 43 Target FEC Stack TLV (1), length: 12 44 LDP IPv4 prefix subTLV (1), length: 5 45 12.1.1.1/32 46 0x0000: 0c01 0101 20 47 0x0000: 0001 0005 0c01 0101 2000 0000 48 7 10:17:09.129192 IP (tos 0xc0, ttl 62, id 50880, offset 0, flags [none], proto UDP (17), length 60) 49 10.20.0.1.3503 > 12.4.4.4.4786: [udp sum ok] 50 LSP-PINGv1, msg-type: MPLS Echo Reply (2), length: 32 51 reply-mode: Reply via an IPv4/IPv6 UDP packet (2) 52 Return Code: Replying router is an egress for the FEC at stack depth 0 (3) 53 Return Subcode: (0) 54 Sender Handle: 0x00000000, Sequence: 2 55 Sender Timestamp: 1087208229.000029880 (1934-06-15T10:17:09Z) Receiver Timestamp: 1087208229.000030186 (1934-06-15T10:17:09Z) 56 8 10:17:10.128607 MPLS (label 100688, tc 7, [S], ttl 255) 57 IP (tos 0x0, ttl 64, id 40729, offset 0, flags [none], proto UDP (17), length 76) 58 12.4.4.4.4786 > 127.0.0.1.3503: [udp sum ok] 59 LSP-PINGv1, msg-type: MPLS Echo Request (1), length: 48 60 reply-mode: Reply via an IPv4/IPv6 UDP packet (2) 61 Return Code: No return code or return code contained in the Error Code TLV (0) 62 Return Subcode: (0) 63 Sender Handle: 0x00000000, Sequence: 3 64 Sender Timestamp: 1087208230.000029928 (1934-06-15T10:17:10Z) Receiver Timestamp: no timestamp 65 Target FEC Stack TLV (1), length: 12 66 LDP IPv4 prefix subTLV (1), length: 5 67 12.1.1.1/32 68 0x0000: 0c01 0101 20 69 0x0000: 0001 0005 0c01 0101 2000 0000 70 9 10:17:10.129475 IP (tos 0xc0, ttl 62, id 50882, offset 0, flags [none], proto UDP (17), length 60) 71 10.20.0.1.3503 > 12.4.4.4.4786: [udp sum ok] 72 LSP-PINGv1, msg-type: MPLS Echo Reply (2), length: 32 73 reply-mode: Reply via an IPv4/IPv6 UDP packet (2) 74 Return Code: Replying router is an egress for the FEC at stack depth 0 (3) 75 Return Subcode: (0) 76 Sender Handle: 0x00000000, Sequence: 3 77 Sender Timestamp: 1087208230.000029928 (1934-06-15T10:17:10Z) Receiver Timestamp: 1087208230.000030250 (1934-06-15T10:17:10Z) 78 10 10:17:11.128577 MPLS (label 100688, tc 7, [S], ttl 255) 79 IP (tos 0x0, ttl 64, id 40731, offset 0, flags [none], proto UDP (17), length 76) 80 12.4.4.4.4786 > 127.0.0.1.3503: [udp sum ok] 81 LSP-PINGv1, msg-type: MPLS Echo Request (1), length: 48 82 reply-mode: Reply via an IPv4/IPv6 UDP packet (2) 83 Return Code: No return code or return code contained in the Error Code TLV (0) 84 Return Subcode: (0) 85 Sender Handle: 0x00000000, Sequence: 4 86 Sender Timestamp: 1087208231.000029918 (1934-06-15T10:17:11Z) Receiver Timestamp: no timestamp 87 Target FEC Stack TLV (1), length: 12 88 LDP IPv4 prefix subTLV (1), length: 5 89 12.1.1.1/32 90 0x0000: 0c01 0101 20 91 0x0000: 0001 0005 0c01 0101 2000 0000 92 11 10:17:11.129418 IP (tos 0xc0, ttl 62, id 50883, offset 0, flags [none], proto UDP (17), length 60) 93 10.20.0.1.3503 > 12.4.4.4.4786: [udp sum ok] 94 LSP-PINGv1, msg-type: MPLS Echo Reply (2), length: 32 95 reply-mode: Reply via an IPv4/IPv6 UDP packet (2) 96 Return Code: Replying router is an egress for the FEC at stack depth 0 (3) 97 Return Subcode: (0) 98 Sender Handle: 0x00000000, Sequence: 4 99 Sender Timestamp: 1087208231.000029918 (1934-06-15T10:17:11Z) Receiver Timestamp: 1087208231.000030237 (1934-06-15T10:17:11Z) 100 12 10:17:12.128655 MPLS (label 100688, tc 7, [S], ttl 255) 101 IP (tos 0x0, ttl 64, id 40733, offset 0, flags [none], proto UDP (17), length 76) 102 12.4.4.4.4786 > 127.0.0.1.3503: [udp sum ok] 103 LSP-PINGv1, msg-type: MPLS Echo Request (1), length: 48 104 reply-mode: Reply via an IPv4/IPv6 UDP packet (2) 105 Return Code: No return code or return code contained in the Error Code TLV (0) 106 Return Subcode: (0) 107 Sender Handle: 0x00000000, Sequence: 5 108 Sender Timestamp: 1087208232.000029937 (1934-06-15T10:17:12Z) Receiver Timestamp: no timestamp 109 Target FEC Stack TLV (1), length: 12 110 LDP IPv4 prefix subTLV (1), length: 5 111 12.1.1.1/32 112 0x0000: 0c01 0101 20 113 0x0000: 0001 0005 0c01 0101 2000 0000 114 13 10:17:12.129573 IP (tos 0xc0, ttl 62, id 50886, offset 0, flags [none], proto UDP (17), length 60) 115 10.20.0.1.3503 > 12.4.4.4.4786: [udp sum ok] 116 LSP-PINGv1, msg-type: MPLS Echo Reply (2), length: 32 117 reply-mode: Reply via an IPv4/IPv6 UDP packet (2) 118 Return Code: Replying router is an egress for the FEC at stack depth 0 (3) 119 Return Subcode: (0) 120 Sender Handle: 0x00000000, Sequence: 5 121 Sender Timestamp: 1087208232.000029937 (1934-06-15T10:17:12Z) Receiver Timestamp: 1087208232.000030273 (1934-06-15T10:17:12Z) 122