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- Newsgroups: comp.dcom.lans.misc
- Path: sparky!uunet!decwrl!netcomsv!netcom.com!cmilono
- From: cmilono@netcom.com (Carlo Milono)
- Subject: Re: ethernet vs. 16mb token ring
- Message-ID: <ja6mh1k.cmilono@netcom.com>
- Date: Fri, 14 Aug 92 04:45:37 GMT
- Organization: Netcom - Somewhere in the S.F. Bay Area
- References: <750@dowjone.UUCP>
- Keywords: throughput, token ring, ethernet
- Lines: 60
-
- In article <750@dowjone.UUCP> sethd@dowjone.UUCP (Seth Dworken) writes:
- >We are currently designing a new network application that will have periods
- >of heavy network usage -- heavy loading, lots of traffic.
- >
- >We are wondering if anyone out there in net.land can comment on whether
- >ethernet or 16mbps token ring would be better for us.
- >
- >The real question is, how do they both perform under heavy loading conditions.
-
- THE REAL real question is: "What protocol(s) do you wish to use? and what
- OS and Network Boards have been chosen?"
- >
- >We realize that token ring will be better because there aren't collisions and
- >the performance should not degrade like ethernet, but how big will the
- >difference be???
-
- O.K., so you have answered your own question, yes? IMHO, you have bandwidth
- and users and 16Mbps is greater than 10Mbps, so logically, you might want
- to pick TR. In truth, I have seen more inefficient code for TR such that
- it performed much less than many other Enet boards - LAN Magazine had a
- 'Drag Race' in 1990 and 1991 and except for a proprietary Novell Implementation
- on Madge, there were many Enet boards on top.
-
- Another question to ask yourself: at what price interoperability? The only
- 'advantage' that I have seen on TR is the frame_size, which if you use this
- 'advantage' will preclude you from using any other media. Also, with the
- difference between Multicast addressing and Functional Addressing in TR, you
- will be left high&dry in the future if another protocol comes down the pike.
-
- If you *really* want to see data being trashed, just keep rebooting a PC
- on a TR lan - the time that your mechanical relay operates takes quite a bit
- longer than what you will see in a collision in 802.3.
-
- For my vote, go with Enet and something like a Kalapaana EtherSwitch.
- >
- >Any info, comments, thoughts or experiences would be appreciated.
- >
- >Please respond directly to an address below. I will summarize if warranted.
- >
- >Many thanks. Regards, Seth
- >
- >================================================================================
- >Seth M. Dworken Voice (w/mail): 609-520-5454
- >Dow Jones & Co., Inc. Fax: 609-520-5089
- >Engineering Department
- > Internet: sethd!sethd%dowjone@Princeton.EDU
- >P.O. Box 300 uunet: sethd%dowjone@uunet.uu.net
- >Princeton, NJ 08543-0300 UUCP: ...!princeton!dowjone!sethd
- > AppleLink: DJ.SD
- >Route 1 & Ridge Road
- >South Brunswick, NJ 08852
- >================================================================================
-
-
- --
- +--------------------------------------------------------------------------+
- | Carlo Milono: cmilono@netcom.com |
- |"When a true genius appears in the world, you may know him by this sign, |
- |that the dunces are all in confederacy against him." - Jonathan Swift |
- +--------------------------------------------------------------------------+
-