Re: [ns] relating packets and nodes!

[Sowmya Manjanatha <sowmyam@mars.iol.unh.edu>]

Hi all,

I think I solved the ip header problem of mine.  Apparently, 
the hdr_ip contains a method named "access" that inputs a
Packet and returns a container of type hdr_ip.

I have another question.  Why is the "wnd_" variable,  a field of TcpAgent
and not of "hdr_tcp" in NS? The actual format of a TCP header
always contains a window field.

Thanks,
Sowmya.


*******************************************************************************

    Sowmya Manjanatha : University of New Hampshire
    Major             : Computer Science      
    *********************************************** 

    email        : sowmyam@iol.unh.edu

    Call me at   : (978)-689-8860 (res)
                   (603)-862-4626 (unh)

*******************************************************************************

On Wed, 9 Aug 2000, Sowmya Manjanatha wrote:

> 
> Hi Haobu,
> 
> Thanks for the info.  Yeah, I am trying to find the src_
> and dst_.  But I want to be able to find this in the 
> "recv" method of TcpAgent because I am trying to analyze
> what the packet experiences in the network from the time
> it leaves the source and reaches the destination.
> 
> Well, the "hdr_ip" structure is not being used anywhere in
> the Packet class.  So, how do you determine which source
> sent this packet by just analyzing the contents of the packet??
> 
> Thanks in advance for the information,
> Sowmya.
> 
> 
> 
> 
> *******************************************************************************
> 
>     Sowmya Manjanatha : University of New Hampshire
>     Major             : Computer Science      
>     *********************************************** 
> 
>     email        : sowmyam@iol.unh.edu
> 
>     Call me at   : (978)-689-8860 (res)
>                    (603)-862-4626 (unh)
> 
> *******************************************************************************
> 
> On Tue, 8 Aug 2000, Haobo Yu wrote:
> 
> > do you mean src_ and dst_ in ip header? pls take a look in related section
> > in the ns manual, or ip.h for the source.
> > 
> > On Wed, 9 Aug 2000, Sowmya Manjanatha wrote:
> > 
> > > Date: Wed, 9 Aug 2000 00:15:26 -0400
> > > From: Sowmya Manjanatha <sowmyam@mars.iol.unh.edu>
> > > To: ns-users@ISI.EDU
> > > Subject: [ns] relating packets and nodes!
> > > 
> > > 
> > > Hi all,
> > > 
> > > How do you figure out which node in the configuration does a packet
> > > belong to when it reaches the "TcpAgent::recv" method ??
> > > 
> > > I tried to look into the Packet class but couldn't find the source
> > > and destination pertinent to that packet from that.  Where is this
> > > information coded in NS?
> > > 
> > > Any suggestions or hints will be greatly appreciated.
> > > 
> > > Thanks,
> > > Sowmya.
> > > 
> > > 
> > > 
> > > 
> > > 
> > > 
> > > *******************************************************************************
> > > 
> > >     Sowmya Manjanatha : University of New Hampshire
> > >     Major             : Computer Science      
> > >     *********************************************** 
> > > 
> > >     email        : sowmyam@iol.unh.edu
> > > 
> > >     Call me at   : (978)-689-8860 (res)
> > >                    (603)-862-4626 (unh)
> > > 
> > > *******************************************************************************
> > > 
> > > 
> > 
> > 
> 
>