A string which holds the list of information to uniquely identify the paths to the target PE. This information is used by the 'single probes' when testing the paths. Following three parameters are needed to uniquely identify a path - lsp-selector (127.x.x.x) - outgoing-interface (i/f) - label-stack (s), if mutiple labels they will be colon (:) separated. These parameters will be hyphen (-) separated for a particular path. This set of information will be comma (,) separated for all the paths discovered as part of this LPD Group. For example: If there are 5 paths in the LPD group then this object will return all the identifier's to uniquely identify the path. The output will look like '127.0.0.1-Se3/0.1-20:18, 127.0.0.2-Se3/0.1-20,127.0.0.3-Se3/0.1-20,127.0.0.4-Se3/0.1-20, 127.0.0.5-Se3/0.1-20'. This object will be set to '0' on reset.