A method for effecting an in-band reset of the physical layers of two
agents interconnected through a link-based interconnection scheme. In
accordance with one embodiment of the invention, a first of the two
agents ceases its forwarded clock to initiate the in-band reset. Upon
realization of the cessation, a second agent ceases its forwarded clock
and proceeds to a reset state. The first agent then proceeds to a reset
state. Subsequently, after waiting a specified period of time, both
agents proceed with a re-initialization of the physical layer. In
accordance with one embodiment of the invention, the re-initialization of
the physical layer is effected without impacting other layers of the
interconnection hierarchy.