Re: ARP interfering with Etherboot TFTP?

Hi,

I'm on the mailinglist and I do read it. There is no need to CC me.
 (The Carbon Copy does annoy me.)

On Tue, Mar 07, 2006 at 02:47:56PM +0000, John Connett/ENG/UK/Plasmon wrote:
> Same hardware setup using the Broadcom NIC.  Linux server running
> atftpd (0.7-7).  Client running PXE / Etherboot-5.4.1.  Trace output
> below.
> 
    <snip/> 

> 4705  86.235 10.4.2.46  10.4.2.152 TFTP Acknowledgement, Block: 2322

First ACK on B#2322

> 4706  86.235 10.4.2.152 10.4.2.46  TFTP Data Packet, Block: 2323

Server did send the next data block.

> 4707  87.443 10.4.2.152 10.4.2.46  ARP  Who has 10.4.2.46?  Tell 10.4.2.152
> 4708  87.443 10.4.2.46  10.4.2.152 ARP  10.4.2.46 is at 00:30:05:83:54:c5
> 4709  89.969 10.4.2.46  10.4.2.152 TFTP Acknowledgement, Block: 2322

Again ACK on B#2322. I think it should be an ACK on B#2323.
But it is 2323 off by 1 ...


Because the server has seen ACK on B#2322 and allready transmitted B#2323,
it keeps waiting on an ACK on B#2323  (doesn't send again thing out )

> 4710  96.395 10.4.2.46  10.4.2.152 TFTP Acknowledgement, Block: 2322

Again ACK on B#2322

> 4711 108.587 10.4.2.46  10.4.2.152 TFTP Acknowledgement, Block: 2322
> 4712 132.753 10.4.2.46  10.4.2.152 TFTP Acknowledgement, Block: 2322
> 4713 142.752 10.4.2.46  10.4.2.152 ARP  10.4.2.46 is at 00:30:05:83:54:c5

ARP reply without an ARP request.

> 4714 180.425 10.4.2.46  10.4.2.152 TFTP Acknowledgement, Block: 2322
> 4715 275.714 10.4.2.46  10.4.2.152 TFTP Acknowledgement, Block: 2322
> 4716 466.236 10.4.2.46  10.4.2.152 TFTP Acknowledgement, Block: 2322
> 4717 466.239 10.4.2.46  10.4.2.152 ARP  10.4.2.46 is at 00:30:05:83:54:c5




Cheers
Geert Stappers


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