Re: [ns] routing algorithm

[Haobo Yu <haoboy@isi.edu>]

I have very poor knowledge about routing in ns, but I have this impression
that by default all routing in ns is done based on hop counts, i.e.,
cost=1. However, you can change the link cost and this will be reflected
in routing, and I believe you can find an example (although I'm not sure
if it's still working ): of links with cost other than 1 at
tcl/ex/simple-eqp1.tcl. (I also remember Kannan has given directions on
this in the mailing list a couple of years ago. Try search the list...)

Hope this helps. 

- Haobo

On Wed, 12 Apr 2000, Sencun Zhu wrote:

> Hi, dear all, it is a little strange to find in ns the routing algorithm
> is based on cost,which by default the costs for all the links is the same 
> (1) ,since I can not figure out the relation between cost and delay,
> actually I find in ns the delay can not affect the route, so does this
> mean every time for a link, besides setting the bindwidth and delay, also
> we need to set the cost? or please tell me where I have missed.
> 
> thanks.
> 
> sencun
> 
>