Multipath routing in MPLS networks - a survey

The paper presents the problem of multipath routing supporting the quality of service (QoS) in MPLS networks. First, we briefly survey the mechanisms used for setting up data transmission channels. We consider those algorithms applied in conventional IP networks which are also used by the MPLS technology. Then, we discuss algorithms characteristic for MPLS networks such as SWP, WSP and MIRA. The problems of error tolerance and the way of reacting on the errors are discussed as well.