View Cart
0 Items | Total: US$0.00
Welcome,      Register

You are here

SP0002 - MPLS Ping, Traceroute and MRU (Part 1)

Average: 5 (2 votes)
Difficulty Level: 
Lab Document: 
<Please login to see the content>
The video introduces you to MPLS ping and traceroute, which are important tools that will help you in troubleshooting a MPLS network. We will explain the differences from traditional ping and traceroute and demonstrate how you can use them to track down label discontinuity which may cause MPLS packet drop. We will the discuss the significant of MRU and its effect to packet fragmentation. Wireshark packet capture will be performed throughout this video to show you the MPLs packet structure.
Part 1 of this video goes over MPLS ping and traceroute
  • MPLS Ping and Traceroute
  • MPLS Maximum Receive Unit (MRU)


About Author

Metha Chiewanichakorn, CCIE#23585 (Ent. Infra, Sec, SP), is a Cisco networking enthusiast with years of experience in the industry. He is currently working as a consulting engineer for a Cisco partner. As a founder of and an instructor at, Metha enjoys learning and challenges himself with new technologies.


Below is the output when I try to ping R2's loopback 0 Ip ..Please help me

R1#ping mpls ipv4
Sending 5, 100-byte MPLS Echos to,
timeout is 2 seconds, send interval is 0 msec:

Codes: '!' - success, 'Q' - request not sent, '.' - timeout,
'L' - labeled output interface, 'B' - unlabeled output interface,
'D' - DS Map mismatch, 'F' - no FEC mapping, 'f' - FEC mismatch,
'M' - malformed request, 'm' - unsupported tlvs, 'N' - no label entry,
'P' - no rx intf label prot, 'p' - premature termination of LSP,
'R' - transit router, 'I' - unknown upstream index,
'X' - unknown return code, 'x' - return code 0

Type escape sequence to abort.
Success rate is 0 percent (0/5)