Re: [ECOS] ping problem

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

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.
I am not getting reply. Is my network configured properly.

When I run client in Linux PC client sends six ARP packets and stops.

TCP packets are not sent.

I am using the same IP in the Redboot. I tried with different IP in Redboot 
also. I am getting the same output.

Not understanding where the problem is.


Regards,
Madhava S



----- Original Message ----- 
From: "Andrew Lunn" <andrew@lunn.ch>
To: "Madhava Reddy S" <madhava.s@globaledgesoft.com>
Cc: "Andrew Lunn" <andrew@lunn.ch>; <ecos-discuss@sourceware.org>
Sent: Tuesday, January 31, 2006 6:50 PM
Subject: Re: [ECOS] ping problem


> On Tue, Jan 31, 2006 at 06:23:20PM +0530, Madhava Reddy S wrote:
> > Hi Andrew,
> >
> > Sorry for the second mail. Our mail server blocks mails for groups, so I
> > have sent one more and asked sysadmin to forward it.
> >
> > In the "Basic network framework" of configuration tool
> > INET Support
> > TFTP(RFC - 1350) Support
> > Use full DHCP instead of BOOTP
> > the above three are checked
> > In "initialization option for 'eth0' "
> > I have checked "address Setups for eth0" and filled in following values:
> >    IP Address for 'eth0'                        192.168.0.10
> >    Network mask address for 'eth0'       255.255.255.0
> >    Broadcast address for 'eth0'                0.0.0.0
> >    gateway/router IP address for 'eth0'    0.0.0.0
> >    Server IP address for 'eth0'            192.168.0.100
> >
> > init_all_network_interfaces() returns the following
> > [cyg_net_init] Done
> > Start client server test    /* start of my application */
> > BOOTP[eth0] op : REPLY
> >    htype      : ethernet
> >    hlen        : 6
> >    hops       : 0
> >    xid          : 0x0
> >    secs        : 0
> >    flags        : 0x0
> >    hw_addr  : 00:50:ba:d8:fc:fc
> >    client IP    : 192.168.0.10
> >    my IP       :  192.168.0.10
> >    server IP   : 192.168.0.100
> >    gateway IP: 0.0.0.0
> >    options:
> >        subnet mask : 255.255.255.0
> >        IP broadcast : 0.0.0.0
> >        gateway        : 0.0.0.0
>
> This all looks OK.
>
> > Initialization of network interfaces done    /* Application specific */
> > socket created
> > bind successful
> > Trying to accept...
> >
> > If  I run client from Linux PC( IP is 192.168.0.100)  it says
> > connect: No route to Host
> > Broken Pipe.
>
> What is happening on the network? Does ARP work? Is the TCP connect
> requested rejected with a RST or is there no communication at all?
>
> What IP address is RedBoot using? The something different or the same?
>
>        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

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