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- Path: sparky!uunet!ogicse!uwm.edu!ux1.cso.uiuc.edu!usenet.ucs.indiana.edu!news
- From: robelr@ucs.indiana.edu (Allen Robel)
- Newsgroups: comp.dcom.cell-relay
- Subject: Re: Future of IP routers
- Message-ID: <BtKDH9.7M7@usenet.ucs.indiana.edu>
- Date: 26 Aug 92 00:03:09 GMT
- Article-I.D.: usenet.BtKDH9.7M7
- References: <1992Aug25.123428.26295@ccsun.strath.ac.uk>
- Sender: news@usenet.ucs.indiana.edu (USENET News System)
- Reply-To: robelr@mythos.ucs.indiana.edu
- Organization: Indiana University
- Lines: 33
- Nntp-Posting-Host: mythos.ucs.indiana.edu
-
- In article <1992Aug25.123428.26295@ccsun.strath.ac.uk>
- craa85@ccsun.strath.ac.uk ( D.W.Stevenson) writes:
- > The requirement of each packet to be placed in memory is a feature of an
- IP
- > router, which is a 'store and forward' device. An ATM switch does not
- require
- > to store cells and this suggests that the most efficient method is to
- use ATM
- > equipment to perform routing (in silicon) as you suggest.
- >
- > However, the
- > installed base of IP equipment means that this is not going to happen in
- the near
- > future. In addition, ATM is being pushed by the telcos for their own
- commercial
- >
-
- There may be another reason why this will not happen for a while.
- The routers we have installed now allow for very flexible security
- filters (TCP port #, network or host address, protocol, etc). These
- features are not an inherent part of the design of ATM switches.
- Features such as these will certainly need CPU support (as opposed to
- CPU-less switching in silicon). Anyone have an idea how this
- functionality would map onto ATM? I know that this can be done at the
- traditiional network/transport layers in routers that live at the edges
- of the ATM cloud, so this function is taken care of for data traffic, but
- routers currently don't handle video/voice traffic that well...
-
- --
- Allen Robel robelr@mythos.ucs.indiana.edu
- University Computing Services ROBELR@IUJADE.BITNET
- Network Research & Planning voice: (812)855-7171
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