A system described herein may receive a request to associate a protocol data unit (“PDU”) session, between a particular User Equipment (“UE”) and a network, with multiple network slices. The system may provide the particular PDU session identifier to a first set of network devices that are associated with the first slice, and to a second set of network devices that are associated with the second slice. The network may route first traffic, received from the UE, to the first set of network devices based on the first traffic including the particular PDU session identifier and the identifier of the first network slice. The network may route second traffic, received from the UE, to the second set of network devices based on the second traffic including the particular PDU session identifier and the identifier of the second network slice.