1MPLS (label 100656, exp 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 5MPLS (label 100688, exp 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: 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: 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 17IP (tos 0xc0, ttl 62, id 50878, offset 0, flags [none], proto UDP (17), length 60) 18 10.20.0.1.3503 > 12.4.4.4.4786: 19 LSP-PINGv1, msg-type: MPLS Echo Reply (2), length: 32 20 reply-mode: Reply via an IPv4/IPv6 UDP packet (2) 21 Return Code: Replying router is an egress for the FEC at stack depth 0 (3) 22 Return Subcode: (0) 23 Sender Handle: 0x00000000, Sequence: 1 24 Sender Timestamp: Receiver Timestamp: 25MPLS (label 100704, exp 6, [S], ttl 64) 26 IP (tos 0xc0, ttl 64, id 40725, offset 0, flags [none], proto TCP (6), length 71) 27 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 28 Keepalive Message (4), length: 19 29MPLS (label 100704, exp 6, [S], ttl 64) 30 IP (tos 0xc0, ttl 64, id 40726, offset 0, flags [none], proto TCP (6), length 52) 31 12.4.4.4.2006 > 12.1.1.1.179: Flags [.], cksum 0x6451 (correct), ack 20, win 16384, options [nop,nop,TS val 84784465 ecr 133413], length 0 32MPLS (label 100688, exp 7, [S], ttl 255) 33 IP (tos 0x0, ttl 64, id 40727, offset 0, flags [none], proto UDP (17), length 76) 34 12.4.4.4.4786 > 127.0.0.1.3503: 35 LSP-PINGv1, msg-type: MPLS Echo Request (1), length: 48 36 reply-mode: Reply via an IPv4/IPv6 UDP packet (2) 37 Return Code: No return code or return code contained in the Error Code TLV (0) 38 Return Subcode: (0) 39 Sender Handle: 0x00000000, Sequence: 2 40 Sender Timestamp: Receiver Timestamp: no timestamp 41 Target FEC Stack TLV (1), length: 12 42 LDP IPv4 prefix subTLV (1), length: 5 43 12.1.1.1/32 44IP (tos 0xc0, ttl 62, id 50880, offset 0, flags [none], proto UDP (17), length 60) 45 10.20.0.1.3503 > 12.4.4.4.4786: 46 LSP-PINGv1, msg-type: MPLS Echo Reply (2), length: 32 47 reply-mode: Reply via an IPv4/IPv6 UDP packet (2) 48 Return Code: Replying router is an egress for the FEC at stack depth 0 (3) 49 Return Subcode: (0) 50 Sender Handle: 0x00000000, Sequence: 2 51 Sender Timestamp: Receiver Timestamp: 52MPLS (label 100688, exp 7, [S], ttl 255) 53 IP (tos 0x0, ttl 64, id 40729, offset 0, flags [none], proto UDP (17), length 76) 54 12.4.4.4.4786 > 127.0.0.1.3503: 55 LSP-PINGv1, msg-type: MPLS Echo Request (1), length: 48 56 reply-mode: Reply via an IPv4/IPv6 UDP packet (2) 57 Return Code: No return code or return code contained in the Error Code TLV (0) 58 Return Subcode: (0) 59 Sender Handle: 0x00000000, Sequence: 3 60 Sender Timestamp: Receiver Timestamp: no timestamp 61 Target FEC Stack TLV (1), length: 12 62 LDP IPv4 prefix subTLV (1), length: 5 63 12.1.1.1/32 64IP (tos 0xc0, ttl 62, id 50882, offset 0, flags [none], proto UDP (17), length 60) 65 10.20.0.1.3503 > 12.4.4.4.4786: 66 LSP-PINGv1, msg-type: MPLS Echo Reply (2), length: 32 67 reply-mode: Reply via an IPv4/IPv6 UDP packet (2) 68 Return Code: Replying router is an egress for the FEC at stack depth 0 (3) 69 Return Subcode: (0) 70 Sender Handle: 0x00000000, Sequence: 3 71 Sender Timestamp: Receiver Timestamp: 72MPLS (label 100688, exp 7, [S], ttl 255) 73 IP (tos 0x0, ttl 64, id 40731, offset 0, flags [none], proto UDP (17), length 76) 74 12.4.4.4.4786 > 127.0.0.1.3503: 75 LSP-PINGv1, msg-type: MPLS Echo Request (1), length: 48 76 reply-mode: Reply via an IPv4/IPv6 UDP packet (2) 77 Return Code: No return code or return code contained in the Error Code TLV (0) 78 Return Subcode: (0) 79 Sender Handle: 0x00000000, Sequence: 4 80 Sender Timestamp: Receiver Timestamp: no timestamp 81 Target FEC Stack TLV (1), length: 12 82 LDP IPv4 prefix subTLV (1), length: 5 83 12.1.1.1/32 84IP (tos 0xc0, ttl 62, id 50883, offset 0, flags [none], proto UDP (17), length 60) 85 10.20.0.1.3503 > 12.4.4.4.4786: 86 LSP-PINGv1, msg-type: MPLS Echo Reply (2), length: 32 87 reply-mode: Reply via an IPv4/IPv6 UDP packet (2) 88 Return Code: Replying router is an egress for the FEC at stack depth 0 (3) 89 Return Subcode: (0) 90 Sender Handle: 0x00000000, Sequence: 4 91 Sender Timestamp: Receiver Timestamp: 92MPLS (label 100688, exp 7, [S], ttl 255) 93 IP (tos 0x0, ttl 64, id 40733, offset 0, flags [none], proto UDP (17), length 76) 94 12.4.4.4.4786 > 127.0.0.1.3503: 95 LSP-PINGv1, msg-type: MPLS Echo Request (1), length: 48 96 reply-mode: Reply via an IPv4/IPv6 UDP packet (2) 97 Return Code: No return code or return code contained in the Error Code TLV (0) 98 Return Subcode: (0) 99 Sender Handle: 0x00000000, Sequence: 5 100 Sender Timestamp: Receiver Timestamp: no timestamp 101 Target FEC Stack TLV (1), length: 12 102 LDP IPv4 prefix subTLV (1), length: 5 103 12.1.1.1/32 104IP (tos 0xc0, ttl 62, id 50886, offset 0, flags [none], proto UDP (17), length 60) 105 10.20.0.1.3503 > 12.4.4.4.4786: 106 LSP-PINGv1, msg-type: MPLS Echo Reply (2), length: 32 107 reply-mode: Reply via an IPv4/IPv6 UDP packet (2) 108 Return Code: Replying router is an egress for the FEC at stack depth 0 (3) 109 Return Subcode: (0) 110 Sender Handle: 0x00000000, Sequence: 5 111 Sender Timestamp: Receiver Timestamp: 112