Re[2]: Address Resolution Protocol

[jfijolek@usr.com]

     Izu,
        I think that you must sign into the MCNS NDA to have access to the 
     documents. Some 300+ vendors have that access. I will find out if I 
     can send you a copy somehow.
     Jack


______________________________ Reply Separator _________________________________
Subject: Re: Address Resolution Protocol
Author:  IZUMIYAMA Hidetaka <izu@jcsat.co.jp> at Internet
Date:    7/28/97 6:02 PM


Emmanuel,
     
From: Emmanuel Duros <Emmanuel.Duros@sophia.inria.fr>
     
> I read your IDs, the first thing I am interesting in discussing is about 
> MAC addresses and address resolution protocols.
> :
> The choice of using periodical announcements of MAC addresss (1) or "an 
> on demand address resolution" (2) may lead to a different choice of
> tunneling mechanism.
     
> Indeed, if (1) is chosen an IP>IP encapsulation is sufficient, according 
> to your mechanism MAC addresses are part of messages sent periodically
> with IP.
     
My "DTPC" is based on this idea.
I think it is similar to Jack Fijolek's idea of MCNS.
     
> If (2) is chosen we may have to use another type of encapsulation such 
> as Generic Routing Encapsulation [rfc1701-1702] in order to encapsulate 
> ARP responses in IP pakets. GRE allows the encapsulatation of IP, ARP
> and other various protocols over IP. In our case only IP and ARP are 
> necessary.
     
Yes.
     
                %%%             %%%
     
The reason why I chose (1) is that any IP tunneling appoarch 
must get the IP address of the end point of tunnel(Feed and 
Receivers) to make the tunnel.
     
To do this, if some protocol such as DTPC of my idea or DHCP extention 
of Fijolek's idea may use, we can get MAC address of UDL interface in 
this protocol.
     
Any comment or suggestion for this idea ?
     
-- izu --
______________________________ Reply Separator _________________________________
Subject: Re: Address Resolution Protocol
Author:  IZUMIYAMA Hidetaka <izu@jcsat.co.jp> at Internet
Date:    7/28/97 6:07 PM


Fijolek,

From: jfijolek@usr.com
>    I am an author of the MCNS data over cable telephony return 
> specification (available at www.cablemodem.com). We have similar multicast > 
problems which require IpinIP solution like yours. For ARP we use gleaning > of 
IP address/hw address from DHCP transactions. Tables are constructed 
> thru the IP administration and may be aged by re-registration at some > 
interval. Aging could also be based on the DHCP lease time.

I think your idea is simillar to my idea.

Do you have some pointer to know the detail of your idea ? I can't get it from 
you Web page(www.cablemodem.com).

-- izu --
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To: Emmanuel.Duros@sophia.inria.fr
Cc: udlr@sophia.inria.fr
Subject: Re: Address Resolution Protocol
In-Reply-To: Your message of "Thu, 24 Jul 1997 14:25:36 +0200 (MET DST)"
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Date: Mon, 28 Jul 1997 18:02:39 +0900
From: IZUMIYAMA Hidetaka <izu@jcsat.co.jp>