I had the same start and finish time and hence no activity...
> CC: ns-users@ISI.EDU
> From: kiran13...@gmail.com
> Subject: Re: [ns] Can't Seen any tcp flow in trace file
> Date: Wed, 19 Dec 2012 21:55:28 +0000
> To: salma...@live.com
>
> Wt was the mistake?
>
> Sent from my iPhone
>
> On 19 ಡಿಸೆಂಬರ್ 2012, at 08:35 PM, Salman Malik <salma...@live.com> wrote:
>
> >
> > Sorry for the previous email: I have just spotted my mistake.
> >
> > Regards,
> > Salman
> >
> > From: salma...@live.com
> > To: ns-users@isi.edu
> > Subject: Can't Seen any tcp flow in trace file
> > Date: Wed, 19 Dec 2012 14:29:06 -0600
> >
> >
> >
> >
> >
> >
> > Hi All,
> >
> > I am a newbie to ns2 and trying to simulate a fat-tree like topology of
> > depth 3 in the simulator. I am using DV routing protocol for routing and
> > the leafs in the topology send packets to the root of the tree (which in my
> > case is a sink). I have used the following to attach sources to the leaf
> > nodes:
> >
> > for {set i 1} {$i <= $switches*$hosts} {incr i} {
> > #Create a TCP agent and attach it to hosts
> > set tcp($i) [new Agent/TCP]
> > # Create exponential traffic sources and attach it to tcp agents
> > set e($i) [new Application/Traffic/Exponential]
> > $e($i) set packetSize_ 500
> > #$e($i) set interval 0.005
> > $e($i) set burst_time_ 990ms
> > $e($i) set idle_time_ 10ms
> > $e($i) set rate_ 100k
> > $e($i) attach-agent $tcp($i)
> > }
> >
> > And I attach all the leaves to the root-sink node as follows:
> >
> > #Create a Null agent (a traffic sink) and attach it to node n(3)
> > set null0 [new Agent/Null]
> > $ns attach-agent $n(0) $null0
> >
> > #Connect the traffic source with the traffic sink
> > for {set i 1} {$i <= $switches*$hosts} {incr i} {
> > $ns connect $tcp($i) $null0
> > }
> >
> > (Other links in the topology also seem fine, as shown in nam. Further, I
> > also started all the sources at the end of .tcl file)
> >
> > But when I inspect the trace file, I don't see any tcp flows in the file. I
> > just see flows of type rtprotodv in the file.
> > What could be wrong here?
> >
> > Thanks,
> > Salman
> >
