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tcp-ip-relay
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Date: 13 Nov 89 16:51:37 GMT
From: stealth!brnstnd@sbcs.sunysb.edu  (Dan Bernstein)
Subject: Re: MXing the world
Message-Id: <3925@sbcs.sunysb.edu>
References: <2029@cmx.npac.syr.edu>, <16300008@uxh.cso.uiuc.edu>
Sender: tcp-ip-relay@NIC.DDN.MIL
To: tcp-ip@NIC.DDN.MIL

In article <16300008@uxh.cso.uiuc.edu> carlson@uxh.cso.uiuc.edu writes:
> IP routine minimizes travel time
> (and travail) for IP packets.

Ummm, no. It ``minimizes'' travel time based on an always out-of-date
picture of network load. The routing algorithms used by the Internet
transmit and use routing information as quickly and as often as data;
this leads to route flapping, completely lost routes, and other forms
of instability.

There is no way to minimize correctly, dynamically, and in real time.

---Dan