CIS 456,  04/27/2004              Name on every sheet!
This is quiz number 7. Last quiz.
20 minutes.

The ethernet multicast address for ``all Systems this Subnet'' is
01:00:5E:00:00:01.

1. Write out this address in binary.



Suppose some MBONE session uses IP multicast address  224.0.15.16 . 

2. What ethernet destination address will be used to carry packets
   of this MBONE multicast group to a final desination on an ethernet
   LAN?
   Give the answer in the usual hexadecimal notation.
   Make sure to  MAKE CLEAR HOW  the procedure works that gives you
   the answer.





Routers R0, R1, R2, R3 etc use RIP1 with Poison Reverse.
At some point R0 has routing table

Network:    1   2   3   4   5   6   7   8   9  10  11
distance:   1   1   2   2   2   7   8   9  16   5   4
Next hop:  DD  DD  R1  R2  R3  R1  R2  R3      R1  R2

(This is not a realistic network! A realistic network needs too many 
subnets).

3. R0 sends a router advertisement to router R1. 
   Give the advertisement.

            1   2   3   4   5   6   7   8   9  10  11

(After the fact I realized problem 3 is ambiguous. See notes 
``correction on RIP''. Since I spent so much time on this in class,
there WILL be a question like this on the final! fifty/fifty whether
it will be with Poison Reverse or Split Horizon).


4. Next, R0 receives from R2 the advertisement

            1   2   3   4   5   6   7       9  10  11  12
            2  16  16   3   2   5   5      16   4   4  11 

Give the new routing table for R0 after it has digested this advertisement.

            1   2   3   4   5   6   7   8   9  10  11  12