[Csci551-talk] problem about oscillation and non-oscillation

[John Heidemann]

On Thu, 06 May 2004 12:11:01 PDT, Min Qin wrote: 
>Dear all,
>    the oscillation part seems wierd now. For handout stage 8, i think the ip
>address 11.0.0.0/8 and 12.0.0.8/8 should be modified to 11.0.0.0/8 and
>11.0.0.8/8. This will make the route oscillate between 5-3-1 and 5-4-2
>    However, this makes the non-oscillation part hard. How to make the route
>non-occillate indefinitely? as long as router 1 and router 2 has the same ip
>prefx/mask, there will definitely exist osscillation. Even a large initial Med
>value can only guarantee the route not to oscillate in a number of packets,
>Also, our input does not provide initial Med value for internal routers(they
>are equal to 0).
>    of course, sending to router 5 will not cause occilation, but is this what
>the part requires?
> 
>Cheers
>Min Qin
>
>

If you don't believe you can generate a case that does not exhibit
oscillation or non-oscillation, please state that fact and WHY in the
your README file.  Then describe (in the README) minimum modification
to the assignment you could make that would allow you to demonstrate
oscillation or non-oscillation.

   -John Heidemann