Lucent Technologies CBX 3500 Configuration Manual page 337

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Configuring ATM Over MPLS Trunks
Configuring ATMoMPLS Trunk Logical Ports
Table 8-11. Add Logical Port: Administrative Tab Fields (Continued)
Field Action/Description
Path Trace Boundary If this is a PNNI LPort, you can set it to be a path trace
boundary. Selecting the check box will cause the LPort to be a
path trace boundary. If it is set on the incoming LPort of a
traced call, then this node will act as a trace boundary. Path
trace requests for calls coming in through this LPort will not be
honored.
This switch will not add any trace information and will not
forward the trace request any further.
If it is set on the outgoing port, then this node will be the trace
destination node. When this LPort is the outgoing LPort for a
call, then it is assumed that the path trace request has reached
its destination and has completed normally.
This switch will add its trace information, but it will not
forward the trace request further.
Clear the checkbox for this LPort to not be a path trace
boundary.
If this is not a PNNI LPort, this field is unavailable.
ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000 1/19/058-39