Abstract: Some implementations relate to direct access to a storage device using a data plane of a switch. A response signal for a first packet transmitted from the switch to the storage device is received from a storage device. The first packet encapsulates a packet sequence number and first data to be transmitted by the switch. The response signal contains the packet sequence number. If the response signal is a negative acknowledgement response signal, a first state sequence number of the switch is updated with the packet sequence number contained in the response signal. The first state sequence number represents a sequence number of a packet to be transmitted by the switch. The first state sequence number and second data to be transmitted by the switch are encapsulated in a second packet to be transmitted to the storage device.