Hi Pedro,
what do you mean by L2 & L4 packet size? I enabled RTR & AGT. As far as
I understand, the AGT trace shows the packet as it's generated by the
agent(in this case UDP. I that correct? What does the RTR trace show? it's
got the exact same packet size and timestamp as my AGT trace? It's not any
clearer why the received packet at node1 is smaller than the sent packet at
node0?
Richard
>From: "Pedro Vale Estrela" <[EMAIL PROTECTED]>
>Reply-To: [EMAIL PROTECTED]
>To: "'Lars Lars'" <[EMAIL PROTECTED]>, <[email protected]>
>Subject: Re: [ns] CBR packet size on 802.11b link
>Date: Mon, 18 Dec 2006 22:58:51 -0000
>
>
>
>
>Good question. You'll get confusing and sometimes conflicting packets sizes
>when setting it at the agent, transport or application level, but this is
>at
>the same layer.
>
>Maybe the send is L2 packet size, with l2 headers, and recv is L4 pakcet
>size without headers
>Try enabling the RTR and AGT traces
>
>Pedro Vale Estrela
>
>
> > -----Original Message-----
> > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
>Behalf
> > Of Lars Lars
> > Sent: segunda-feira, 18 de Dezembro de 2006 21:46
> > To: [email protected]
> > Subject: [ns] CBR packet size on 802.11b link
> >
> >
> > Hi,
> > I'm sending 1004 Byte CBR packets using a UDP agent with a packet size
>of
> > 1024. After the RTS/CTS handshaking is complete I can see the packet
> > sending
> > and receiving. Tracefile extract is below. Why is the cbr packet size
>1076
> > when sending and 1024 when arriving??
> >
> > L
> >
> >
> > s 1.213410777 _0_ MAC --- 0 RTS 44
> > r 1.213763444 _1_ MAC --- 0 RTS 44
> > s 1.213773444 _1_ MAC --- 0 CTS 38
> > r 1.21407811 _0_ MAC --- 0 CTS 38
> > s 1.21408811 _0_ MAC --- 267 cbr 1076
> > r 1.215045868 _1_ MAC --- 267 cbr 1024
> >
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