Get out your textbooks for this one!

["Lutz, Kyle" <Kyle () birchtel com>]

I have implemented hundreds of networks and designed them over the years
but I have not a clue on these questions.

I realize that this is much more towards hardware design, but I know
that many of us have background there.

Networking design 101

> problem 3: clearly illustrate the design  of a knockout 
> crossbar switch
> that enables an output port to choose packets from 9 input ports
> simultaneously in a 12x12 switch. your switch design must use 
> the FEWEST
> number of 2x2 switching elements.
>
> problem 4: consider the network topology given in figure 2. 
> the label for
> each of the links in the figure denotes the delay experience 
> by any packet
> traversing the link (in either direction). each node is assumed to
> initially know the delays of its outgoing links and all links 
> are assumed
> to be bi-directional. clearly show the routing table of node A step by
> step, from the initial state to the final state (when the 
> routing table
> stabilizes), for the following two cases:
>
>  o when the routing algorithm is the Distance Vector algorithm
>  o when the routing algorithm is the Link State algorithm
>
>      __ 3 __B__ 4 __
>     /               \
>    A------- 5 -------C\       H
>    |\                | \     /
>    | 2               |  1   2
>    1  \              |   \ /
>    |   E             6  / D
>    |                 | 3
>    F------- 9 -------G/