Re: [saad] About saad

Fred Baker <fred@cisco.com> Fri, 17 October 2003 05:38 UTC

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Date: Thu, 16 Oct 2003 15:13:30 -0400
To: "James Kempf" <kempf@docomolabs-usa.com>
From: Fred Baker <fred@cisco.com>
Subject: Re: [saad] About saad
Cc: <saad@ietf.org>
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References: <DD7FE473A8C3C245ADA2A2FE1709D90B06C658@server2003.arneill-py.sacramento.ca.us> <018201c393ff$a7431200$396015ac@dclkempt40>
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At 12:07 PM 10/16/2003, James Kempf wrote:
>An IP address acts in two roles:
>
>1) As a node or endpoint identifier to the transport layer for an end to end
>conversation.
>
>2) As a locator for routing packets to a particular topological location.

actually, I will argue that the endpoint identifier is the dns name. That 
has problems in that

  - it needs to be able to name a service and get the address of the most 
serviceable instance of a computer offering it to the requestor; it 
currently simply offers *an* address of a list of addresses from which the 
requestor needs to choose at random

  - it presumes a global address space (there is no concept of "source 
route to this gateway address and then to that private address", or the 
obvious generalization)

  - A list of other things I will think of just after I send this email

But it in fact acts to identify the intended endpoint. 


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