From: Stefan Grey (examplebrain@hotmail.com)
Date: Fri Feb 09 2007 - 07:23:04 ART
Well it would be great if you could also provide me with details on this.
It seems me quite illogical what you have written here. Why the client sets
the source mac to 0?? It really does know it's own address.
>Server Responce (suppose they directly connected):
>SRC MAC: me
>DST MAC: FFFFFFFF
>SRC IP: me
>DST IP: local broadcast
If the server responds in this way than any host would receive this packet
and think that it is for them..... Another thing which I am not sure here is
that I have heared that in DHCP offer message the DHCP server sets the IP
address of destination the same IP address which it wants to assign to the
client.
Any thoughts??
>From: Ivan <ivan@iip.net>
>To: "Stefan Grey" <examplebrain@hotmail.com>
>Subject: Re: DHCP question
>Date: Fri, 9 Feb 2007 12:57:24 +0300
>
>As you wrote you didn't want detail. I try explain as briefly as i can.
>
>Client Request
>SRC MAC: 0:0:0
>DST MAC: FFFFFFFF
>SRC IP: 0
>DST IP: General broadcast
>
>Server Responce (suppose they directly connected):
>SRC MAC: me
>DST MAC: FFFFFFFF
>SRC IP: me
>DST IP: local broadcast
>
>On Friday 09 February 2007 12:23, Stefan Grey wrote:
> > Hello guys,
> >
> > Could you please explain me the following?? Which addresses (MAC and IP)
>do
> > the host and the DHCP server use in the process of communication.
> > Could you please confirm and expain the following thigs??
> > Do I correctly understand that the hosts sends the DHCP request with
> > destination FF:FF:FF:FF MAC and destination IP 255.255.255.255 to the
>local
> > network?? It uses its MAC as the source... which IP address does it use
>as
> > the source?? And then the DHCP address answers in unicast as I remember
> > with its IP and MAC as the source and the MAC of the hosts as the MAC
> > destination... which IP it uses as the destination IP address??
> >
> > The question appeared because I can't understand how two layer 7 devices
> > can communicate without know the IP address exactly. How do they
>overcome
> > here this problem. I did a short research on this but the documents
>didn't
> > give me the details.
> > Thank you very much.
> > Please help...
> >
> > Regards,
> >
> > Stefan.
> >
> > _________________________________________________________________
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>
>--
>Ivan
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