In addition to these commands, you should review the MPLS Label (Outer Label) assigned by the MPLS network to the Xconnect to determine if it is using LDP or if is using a TE-Tunnel, MLS CEF (on the 7600) and the output of debug commands for the xconnect.
Note: Depending on the amount of Xconnects in your network, it's recommended to perform conditional debugging to limit the amount of debug data (i.e. debug interface Te4/4, followed by specific debug commands).
This document is an early notification of a behaviour change that will be introduced in IOS XR release 6.5.
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