The tracert command output does not display the IP address of a PE on the public network on an S series switch

After you perform the following operations on S series switches (except the S1700), the tracert command output does not display the IP address of a PE on the public network:
1. Run the undo ttl propagate command in the system view of the PE to set the TTL propagate mode of MPLS packets to pipe.
2. Run the reset mpls ldp command in the user view to reset MPLS LDPs.

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