Re: example script showing no target for slot problem

[Paul WHITE <P.White@cs.ucl.ac.uk>]

Many thanks,

everything is now working fine now that I am using Node allocaddr for the 
expanded address case

Paul

> On Tue, 13 Jul 1999, Paul WHITE wrote:
> 
> > I've managed to put together an example script using teh same topology that 
> > was giving me the 'no target for slot problem'
> > 
> > When you run the script you will see the following error message
> 
> I never understand this
> sourcing-of-stuff-ns-is-supposed-to-know-about-in-the-first-line
> business. Would someone mind explaining it to me? Surely a comment
> saying
> 
> # Hi! I need BST functionality and likely a more recent snapshot than
> # that thing you're running!
> 
> suffices? Regardless... this is a trivial and different problem:
> 
> $ diff paul.tcl paul-fixed.tcl
> 2d1
> < set group 0x8001 
> 163a163
> > set group [Node allocaddr]
> 
> Since you're using expanded address space, you have to let the
> simulator allocate the group address (unless you pick really really
> large numbers, I suppose.) Example scripts with ns don't illustrate
> this well, and it seems to trip up the few people playing with
> multicast and large address spaces initially (well, that's _my_
> excuse). With this fixed, your script finished, I got a nam trace
> looking something like a dead mutant christmas tree with aphids [*],
> things seem to work fine.
> 
> This isn't the no-target-for-slot problem I'm seeing in other address
> spaces a longlong time into large simulations, and judging from your
> own description (slot 1 vs slot 3279) probably not the one you're
> really facing either. Red herring.
> 
> > At 0.1577 : node 14 oiflist: _o916 _o1301
> > At 0.1706 : node 29 received a graft from: 25, to: -1, if: 69
> > At 0.1706 : node 29 oiflist: _o1092 _o1521 _o1466
> > At 0.1785 : node 4 received a graft from: 14, to: -1, if: 20
> > At 0.1785 : node 4 oiflist: _o718 _o905
> > At 0.2393 : node 0 received a graft from: 4, to: -1, if: 2
> > At 0.2393 : node 0 oiflist: _o729 _o751 _o707
> 
> didn't see that.
> 
> > _o4238: no target for slot 1
> 
> fixed that.
>  
> > Why its says slot 1 and not slot 3279 as it did for my other script using the 
> > same topology and addresses I dont know. ANyway heres teh example script that 
> > produces the above problem. If anyone can shed light on what is going wrong 
> > here then I'd be most grateful
> > 
> > thanks,
> > 
> > Paul
> 
> [see the list archive for Paul's script]
> 
> L.
> 
> [*] I want a nam Xmas tree animation. And all the times between stops
>     and platforms on the London Underground so I can build the topology, turn
>     nam into a virtual trainset, and have godmode routing tell me the
>     fastest way from A to B as well.
> 
> <L.Wood@surrey.ac.uk>PGP<http://www.ee.surrey.ac.uk/Personal/L.Wood/>
> 
>