Which one of the following statements regarding the detour object transported in the detour path message is true?
Which one of the following statements regarding the detour object transported in the detour path message is true?
When a Point of Local Repair (PLR) router calculates a path for a detour, the explicit route object (ERO) is included in the PATH message sent downstream by the PLR. This PATH message, which contains the hop information calculated by the Constrained Shortest Path First (CSPF) algorithm, is used to signal the detour path. Thus, the correct statement is that the PLR sends it downstream with the ERO.
When a PLR router calculates a path for the detour, the hop information calculated by CSPF is inserted into the ERO of the PATH message sent by the PLR. This PATH message is used to signal the detour.