Wireshark · Wireshark-users: Re: [Wireshark-users] Why redundant frames?

[Tony Anecito <adanecito@xxxxxxxxx>]

Hi George,

Many thanks for the feedback. When I have access to the system I will let you know. The network path is from my client app through a DLink 1Gbps switch up to my router then back again to the same system as the client since the app server is on that box.
So I am assuming what you are talking about is on my windows box and that I should use something like TCP optimizer to check that setting.

Best Regards,
-Tony

--- On Wed, 10/14/09, George Peaslee <gpeaslee@xxxxxxxxxxx> wrote:

> From: George Peaslee <gpeaslee@xxxxxxxxxxx>
> Subject: Re: [Wireshark-users] Why redundant frames?
> To: "Community support list for Wireshark" <wireshark-users@xxxxxxxxxxxxx>
> Date: Wednesday, October 14, 2009, 10:04 AM
> A couple things come to mind.
> 
> In your TCP options field of the handshake, what is the
> Maximum segment 
> size?
> 
> Is there a device that is setting a smaller MTU in the path
> such as a 
> router? (Path MTU Discovery)
> 
> 
> ----- Original Message ----- 
> From: "Tony Anecito" <adanecito@xxxxxxxxx>
> To: "Community support list for Wireshark" <wireshark-users@xxxxxxxxxxxxx>
> Sent: Wednesday, October 14, 2009 10:43 AM
> Subject: Re: [Wireshark-users] Why redundant frames?
> 
> 
> Hi All,
> 
> More info. Each frame in wireshark is listed as having
> 539bytes captured and 
> on the wire. My MTU is set to 1500 byte packets so if this
> is a 
> fragmentation of data why would the data be split into two
> frames when one 
> should have at least used two packets within a frame?
> 
> Sorry for the questions I am a newbe to this level of
> analysis.
> 
> Many Thanks,
> -Tony
> 
> --- On Wed, 10/14/09, Tony Anecito <adanecito@xxxxxxxxx>
> wrote:
> 
> > From: Tony Anecito <adanecito@xxxxxxxxx>
> > Subject: [Wireshark-users] Why redundant frames?
> > To: "Wireshark Users" <wireshark-users@xxxxxxxxxxxxx>
> > Date: Wednesday, October 14, 2009, 9:03 AM
> > Hi All,
> >
> > I am analyzing some traffic for my app using
> Wireshark. I
> > captured a single request from my app to a web service
> and
> > noticed that there appeared to be a redundancy in two
> > frames. I am seeing something called a "TCP segment of
> a
> > reassembled PDU" and then my Post being sent from the
> source
> > (my client app) to the destination (web service). And
> the
> > same sequence coming back from the destination (web
> service)
> > to the source (my client app).
> >
> > Does anyone know why the TCP segment of a reassembled
> PDU
> > is be sent and then coming back? It looks like it
> contains
> > the same data or payload.
> >
> > Thanks,
> > -Tony
> >
> >
> >
> >
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> 
> 
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