Re: Link Cost

[Lloyd Wood <L.Wood@surrey.ac.uk>]

On Sat, 20 Feb 1999, Wee Ching Wi wrote:

> Does anyone know how to change the link cost for any pair of nodes. I know
> there is an instproc cost{ } but  not too sure how to use it.

 [$ns link $n($node2) $n($node1)] cost $thislinkcost

AFAIK it only works at startup; I haven't been able to change this
successfully dynamically. Anyone?

In November 1998 Kannan wrote:
| You can try invoking "$n0 intf-changed; $n3 intf-changed" after
| changing the link cost.  However, since I don't recall ever
| explicitly taking link cost changes into account, it may or may not
| work.
[..]
| Again, setting costs as a function of the link delay definitely
| works (barring unforeseen bugs) when the costs are configured
| at startup; whether it works when the costs are changed during
| simulation execution is a question.

L.

<L.Wood@surrey.ac.uk>PGP<http://www.ee.surrey.ac.uk/Personal/L.Wood/>