Re: [ECOS] ping problem Progress

["Madhava Reddy S" <madhava dot s at globaledgesoft dot com>]

Hi All,

I have a little progress with the problem what i am facing.

I am testing UDP application.

Server IP 192.168.0.100 (Host PC)
Client IP 192.168.0.20 (Target PC)
I am running server on Linux PC and client on Target.

When i run the client Gratuitous ARP request is sent to query its own IP 
address.
Then ARP is sent to know who has 192.168.0.100 Tell 192.168.0.20
Got a reply for ARP saying 192.168.0.100 is at 00:0c:76:11:0f:c2 (MAC 
address of Linux PC )

Now UDP packets are not getting sent.

If I broadcast the packet I see UDP packets going out to 192.168.0.255 but 
server is unable to receive.

What could be the problem ?.

Thanks in advance

Regards,
Madhava S


----- Original Message ----- 
From: "Andrew Lunn" <andrew@lunn.ch>
To: "Madhava Reddy S" <madhava.s@globaledgesoft.com>
Cc: <ecos-discuss@sourceware.org>
Sent: Wednesday, February 01, 2006 1:19 PM
Subject: Re: [ECOS] ping problem


> On Wed, Feb 01, 2006 at 11:50:28AM +0530, Madhava Reddy S wrote:
> > Hi Andrew,
> >
> > I am running the server in the target. when i check in the ethereal two 
> > ARP
> > packets are sent from the target and both of them are Gratuitous ARP. I
> > browsed in the net for Gratuitous ARP. In the following link
> > http://www.geocities.com/SiliconValley/Vista/8672/network/arp.html?20061#A28
> >
> > He says host sends ARP request to resolve its own IP address.
> >
> > He also says in a properly configured network there will not be reply for
> > gratuitous ARP request.
>
> This is just the target making sure nobody else is using the same
> address it has been allocated. No reply is good.
>
> > When I run client in Linux PC client sends six ARP packets and stops.
>
> This is bad. The target should of replied to the ARPs. I assume the
> ARPs are for the correct address?
>
> > I am using the same IP in the Redboot. I tried with different IP in 
> > Redboot
> > also. I am getting the same output.
>
> Redboot and the application must have different addresses. Try again
> with different addresses.
>
>        Andrew
>
> --
> Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
> and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss

This e-mail contains PRIVILEGED AND CONFIDENTIAL INFORMATION intended solely for the use of the addressee(s). If you are not the intended recipient, please notify the sender by e-mail and delete the original message.Global Edge Software Ltd has taken every reasonable precaution to minimize this risk, but is not liable for any damage you may sustain as a result of any virus in this e-mail. You should carry out your own virus checks before opening the e-mail or attachment. Global Edge Software Ltd reserves the right to monitor and review the content of all messages sent to or from this e-mail address

-- 
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss