Some more topology generators

[Graham Phillips <graham@ISI.EDU>]

To the maintainer of 
http://www-mash.cs.berkeley.edu/ns/ns-topogen.html

I've written some topology generator programs that the ns
community is more than welcome to use.  These programs are 
reasonably mature and I've used them over the past year
while preparing a sigcomm paper about multicast trees.  

The programs essentially create and manipulate Standford Graph 
Base topology files, but there are also programs for converting from 
1) tiers to SGB, and 
2) ISI's mbone collection format to SGB.
Obviously the ns community would use the existing SGB to ns 
converter to create the appropriate ns topologies.

The basic idea was to widen the range of real and artificial 
topologies that might be constructed.  All utilities and 
documentation are available
from http://www-scf.usc.edu/~grahamph/contrib/index.html

--Graham