Re: Core Based Trees implementation on NS?

[Polly Huang <huang@catarina.usc.edu>]

On Tue, 3 Mar 1998, Ahmed A-G Helmy wrote:

> > 
> > I wonder whether there is an implementation of core based tree multicast
> > routing on NS . 
> 
> There is an early version (un-documented) of PIM-SM (that uses shared 
> trees) under the tcl/pim directory. 
> This represents a detailed simulation of the protocol.
> 
> A centralized version of the shared tree protocol was also included in NS 
> release (Polly owns that part... and she may be able to clarify it for you).

The centralized mcast supports both shared trees and source specific 
trees, but they are computed in a centralized fashion (i.e., no CBT or 
PIM-SM join/leave msg nor detailed protocol interaction). 

-Polly
> 
> Also, I think there's some outside effort to implement CBT in the NS 
> framework... but not sure how far such effort has gone..
> [maybe the responsible people will respond to this]
> 
> Regards,
> -A
> 
> > 
> > Thanks,
> > 
> > Tian
> > 
> > 
>