From: Stefan Grey (examplebrain@hotmail.com)
Date: Fri Feb 09 2007 - 09:59:09 ART
Thank you very much. The link to this document was exaclty what I needed.
Thanks to all!
>From: Ivan <ivan@iip.net>
>Reply-To: Ivan <ivan@iip.net>
>To: ccielab@groupstudy.com, "Stefan Grey" <examplebrain@hotmail.com>
>Subject: Re: DHCP question
>Date: Fri, 9 Feb 2007 15:11:04 +0300
>
>Exactly. Client request src mac is "me".
>What concern other host that receive DHCP discovery message, they all can
>responce with DHCP offer. But this can appear in two cases
>*) there real DHCP-server
>*) there fake DHCP-server
>
>You can see more detail description of this process here
>http://cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a00800f0804.shtml
>
>On Friday 09 February 2007 13:23, Stefan Grey wrote:
> > 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.
> > > >
> > > > _________________________________________________________________
> > > > Find a baby-sitter FAST with MSN Search! http://search.msn.ie/
> > > >
> > > >
>_______________________________________________________________________
> > > > Subscription information may be found at:
> > > > http://www.groupstudy.com/list/CCIELab.html
> > >
> > >--
> > >Ivan
> >
> > _________________________________________________________________
> > Customise your home page with RSS feeds at MSN Ireland!
>http://ie.msn.com/
> >
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
>
>--
>Ivan
>
>_______________________________________________________________________
>Subscription information may be found at:
>http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Thu Mar 01 2007 - 07:38:46 ART