[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: Which floppy drive

On Mon, Dec 18, 2000 at 01:28:21PM +0100, Andreas Tille wrote:
> On Mon, 18 Dec 2000, Andreas Jaehnigen wrote:
> > > Hmm, my box seems not to find the tftp image.  It just repeats:
> > > Timeout waiting for ARP/RARP packet
> > 
> > Is your ARP server up and running? This message is typically generated due
> What is an "ARP server".

An ARP request is an ethernet broadcast that basically says: "I've IP
number a.b.c.d, now what is the hardware ethernet addres for this
machine so I can talk to it using ethernet unicasts?" The machine with
IP number a.b.c.d responds by sending back a message to identify

A RARP server does the opposite: a machine (your Sun) knows its
ethernet hardware address, so it sends out a RARP request to ask for
its corresponding IP number. If the RARP server knows about it, it
sends back a message to tell the host.

What's going wrong in your case is that the RARP server isn't properly
setup, or that the RARP server isn't configured at all.

> I followed the instructions in the SPARC install manual topic 6.5.3.
> My problem is:  How does the sun find the server.  How does it search the
> net for such kind of server.  How can I tell the IP of the tftp server?

By getting the RARP server up.

To see what's going on, log on to a third machine, and start tcpdump:

  tcpdump -e -l -vv ether host <sun hardware address> or \
    ether host <rarp server hardware address>

You should see messages like: "who-has bla", "I have bla".


J.A.K. (Erik) Mouw, Information and Communication Theory Group, Department
of Electrical Engineering, Faculty of Information Technology and Systems,
Delft University of Technology, PO BOX 5031,  2600 GA Delft, The Netherlands
Phone: +31-15-2783635  Fax: +31-15-2781843  Email: J.A.K.Mouw@its.tudelft.nl
WWW: http://www-ict.its.tudelft.nl/~erik/

Reply to: