Re: MAC trace & message packet

[Ya Xu <yaxu@isi.edu>]

On Wed, 3 Nov 1999, Mickael Vera wrote:

> Hi,
> 
> I use the snapshot
> I use MAC trace in a simulation with wireless nodes
> and base stations.
> 
> What are packets with "message" in the info field :
> 
> s 0.002118081 _3_ MAC  --- 0 message 84 [0 ffffffff 0 800] -------
> [4196352:255 -1:255 32 0] 
> r 0.002454128 _4_ MAC  --- 0 message 32 [0 ffffffff 0 800] -------
> [4196352:255 -1:255 32 0] 
> r 0.002454175 _5_ MAC  --- 0 message 32 [0 ffffffff 0 800] -------
> [4196352:255 -1:255 32 0] 
> s 0.233696811 _5_ MAC  --- 1 message 84 [0 ffffffff 2 800] -------
> [4196353:255 -1:255 32 0] 
> r 0.234032858 _4_ MAC  --- 1 message 32 [0 ffffffff 2 800] -------
> [4196353:255 -1:255 32 0] 
> r 0.234032905 _3_ MAC  --- 1 message 32 [0 ffffffff 2 800] -------
> [4196353:255 -1:255 32 0] 
> s 1.268525105 _4_ MAC  --- 2 message 84 [0 ffffffff 1 800] -------
> [8390656:255 -1:255 32 0] 
> r 1.268861152 _5_ MAC  --- 2 message 32 [0 ffffffff 1 800] -------
> [8390656:255 -1:255 32 0] 
> r 1.268861152 _3_ MAC  --- 2 message 32 [0 ffffffff 1 800] -------
> [8390656:255 -1:255 32 0] 

message is dsdv routing pkts
> 
> I don't understand their roles in my simulation.
> I have seen in the sources that they are used by 
> ivs agent:
> 
> /* ivs data packet; ctrl packets are sent back as "messages" */
> 
> but what is this agent ?
> Why does the trace of simulation begins with this lines ?

they are dsdv agents. Check your simulation scripts to see if you are
using dsdv

-Ya