Direction (1 bit) (Token-Ring)

Protocol: Token-Ring RIF / Source Routing RIF PCI (0-30 bytes) (Token-Ring)

Field: RIF / direction

Length: 1 bit

Contents: indicates the frame's direction.

The direction bit indicates in which order the routing designators are to be processed by bridges.

sender-to-destination: D=0

destination-to-sender: D=1