nanog mailing list archives
Re: High speed access
From: Chris Adams <cmadams () hiwaay net>
Date: Fri, 6 Jul 2001 09:44:33 -0500
Once upon a time, Andrew Brown <twofsonet () graffiti com> said:
symetric 11 Mbps sounds...goofy. especially if based on 802.11b, which utilizes a broadcast mechanism. besides, i've yet to meet *anyone* who got past about 2/3 of the theoretical "bandwidth" of 802.11b. imho, it's the spinal tap of the networking era (it "goes to 11", but is actually just a rumor and sort of made up).
802.11b is 11Mbps (at the top end), but that includes signalling overhead. There is a lot of overhead involved in the protocol (think like ATM where you can't get 11Mbps of IP traffic through an 11Mbps ATM link). Also, 802.11b is "half-duplex"; only one side can be transmitting at a time (like plain old Ethernet with either 10Base2 or 10BaseT and a dumb hub). -- Chris Adams <cmadams () hiwaay net> Systems and Network Administrator - HiWAAY Internet Services I don't speak for anybody but myself - that's enough trouble.
Current thread:
- High speed access Roeland Meyer (Jul 05)
- Re: High speed access Andrew Brown (Jul 06)
- Re: High speed access Chris Adams (Jul 06)
- Re: High speed access Leo Bicknell (Jul 06)
- Re: High speed access Tom Lettington (Jul 06)
- Re: High speed access Andrew Brown (Jul 06)