Alcatel-Lucent 7210 SAS M User Manual page 284

Generic Commands
other words, if one LDP interface is set up as transport-address interface and another for
transport-address system, then, depending on which adjacency was set up first, the TCP endpoint
addresses are determined. After that, because the hello contains the LSR ID, the LDP session can be
checked to verify that it is set up and then match the adjacency to the session.
Note that for any given ILDP interface, as the local-lsr-id parameters is changed to interface, the
transport-address configuration loses effectiveness. Since it will be ignored and the ILDP session
will always use the relevant interface IP address as transport-address even though system is chosen.
The no form of the command, at the global level, sets the transport address to the default value.
The no form of the command, at the interface level, sets the transport address to the value defined
under the global level.
Default
system — The system IP address is used.
Parameters
interface — The IP interface address is used to set up the LDP session between neighbors. The
system — The system IP address is used to set up the LDP session between neighbors.
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Guide
transport address interface cannot be used if multiple interfaces exist between two neighbors,
since only one LDP session is set up between two neighbors.
7210 SAS M, T, X, R6, Mxp MPLS Configuration