What happens next after an incoming packet is de-encapsulated from the Layer 2 frame in
an Alcatel-Lucent 7750 router?
The IP datagram is encapsulated in the appropriate Layer 2 frame by the MDA.
The IP datagram passes through the switch fabric to reach the egress IOM.
The IP datagram is passed to the IOM.
A lookup is performed in the FIB to determine the egress interface.