Handling race conditions among bidirectional LSP requests via WA-method-TLV in GMPLS WDM networks

This paper defines three types of race conditions that may occur while attempting to reserve optical circuits in GMPLS WDM networks. It then investigates the effect on network blocking by race condition type and explains how to use an already existing TLV in the IETF RSVP signaling to inform the destination node of a potential race condition occurrence. An informed destination can then choose the appropriate wavelength assignment algorithm to best handle such situation.