Path: utzoo!mnetor!uunet!husc6!mailrus!nrl-cmf!ames!pasteur!ucbvax!A.ISI.EDU!CERF From: CERF@A.ISI.EDU Newsgroups: comp.protocols.tcp-ip Subject: Re: Rumors about the death of the ARPANET Message-ID: <[A.ISI.EDU]20-Mar-88.22:28:27.CERF> Date: 21 Mar 88 03:28:00 GMT References: Sender: daemon@ucbvax.BERKELEY.EDU Organization: The Internet Lines: 14 Frank, DS-3 is a reality for many people who either mux it down to manageable bandwidth channels or build special interfaces that can push/pull data at 45 Mbit/sec. About your earlier messages concerning trusting local I/O and not doing checksums end to end (by implication) - we have tried that in the past and been burned - what is different today? Fiber? The problem is that the end to end channel may still contain some weakness in terms of S/N and bit error rate. I'd rather see silicon checksums to speed them up than doing away with them because they take time... Vint