oduXcConnConfigP2 identifies the sync (destination) ODU port for a unidirectional cross-connection, using the same 1-10/11-20 Uplink 1/Uplink 2 numbering as oduXcConnConfigP1, or 0 to represent a dropped connection. An admin reads or sets this alongside oduXcConnConfigP1 to define where traffic from the source ODU is delivered, and a value of 0 specifically signals that the source port's traffic is being dropped rather than cross-connected elsewhere. For example, an entry with oduXcConnConfigP1 of 3 and oduXcConnConfigP2 of 0 means the third ODU of Uplink 1 is configured to be dropped rather than cross-connected to another port.