Router restart. Suppose a router X detects an internal fault, shuts down, and restarts. Describe how the input links and output links of the router must be sequenced to bring the router back on-line...

Router restart. Suppose a router X detects an internal fault, shuts down, and restarts. Describe how the input links and output links of the router must be sequenced to bring the router back on-line while causing a minimum of disturbance to an upstream router W and a downstream router Y . In particular, describe (a) what happends to a packet with tail and body flits in W and head flit in X, (b) what happens to a packet with body and tail flits in X and head flit in Y , and (c) what happens to a new packet arriving from W to X following the packet with head flits in X when X restarts.