nanog mailing list archives
Re: FDDI or 100Mb Ethernet
From: Deepak Jain <deepak () jain com>
Date: Fri, 6 Feb 1998 17:16:30 -0500 (EST)
Depends on the switch. Some switches, (notably Bay 28115Rs) perform poorly in fast ethernet/full duplex mode whereas they perform like champs in half-duplex mode. What they say they "do", and what they really do well are sometimes not the same thing. -Deepak. On Fri, 6 Feb 1998, Dorn Hetzel wrote:
I have started to look at "Fast Ethernet" and see "Full-Duplex Switched Fast Ethernet". I mean, the switch ports are SO cheap, why do anything less... On Fri, Feb 06, 1998 at 04:17:53PM -0500, Dean Anderson wrote:At 2:35 PM -0500 2/6/98, Deepak Jain wrote:FDDI can run full duplex, as for the other two things its a matter of opinion & conditions. (One I agree with, but still opinion).For desktops, I agree completely that fast ethernet is the way to go. Fast ether hubs are cheaper and easier to wire than cddi hubs (no cross over cables required). For a backbone, though, I would point out that FDDI is a token ring protocol, so performance is always predictable. Ethernet, and fast ethernet have performance knees. (Actually, I'm assuming Fast Ethernet will have a knee at around 70% utilization. I haven't tested that it really does). Also, both Fiber and Copper can be implemented with dual attached rings which might be an advantage for a backbone link. --Dean ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Plain Aviation, Inc dean () av8 com LAN/WAN/UNIX/NT/TCPIP http://www.av8.com ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Current thread:
- Re: FDDI or 100Mb Ethernet, (continued)
- Re: FDDI or 100Mb Ethernet Deepak Jain (Feb 06)
- Re: FDDI or 100Mb Ethernet Dean Anderson (Feb 06)
- Re: FDDI or 100Mb Ethernet Paul Ferguson (Feb 06)
- Re: FDDI or 100Mb Ethernet Sean M. Doran (Feb 08)
- Re: FDDI or 100Mb Ethernet Matthew Petach (Feb 08)
- Re: FDDI or 100Mb Ethernet Deepak Jain (Feb 06)
- Re: FDDI or 100Mb Ethernet David Lesher (Feb 06)
- Re: FDDI or 100Mb Ethernet Dorn Hetzel (Feb 06)
- Re: FDDI or 100Mb Ethernet Martin Hannigan (Feb 06)
- Re: FDDI or 100Mb Ethernet Karl Denninger (Feb 06)
- Re: FDDI or 100Mb Ethernet Robert E. Seastrom (Feb 06)
- Re: FDDI or 100Mb Ethernet Deepak Jain (Feb 06)