nanog mailing list archives
Re: what about 48 bits?
From: Jim Burwell <jimb () jsbc cc>
Date: Sun, 04 Apr 2010 20:08:02 -0700
On 4/4/2010 19:16, Mark Smith wrote: <-snip->
Actually the IEEE have never called it "Ethernet", it's all been IEEE 802.3 / XXX{BASE|BROAD}-BLAH. "Ethernet", assuming version 1 and 2, strictly means thick coax, vampire taps and AUI connectors running at (half-duplex) 10Mbps. I saw some of it once.
I worked with it at my first job at a large government institution. Talk about painful and unweildy. We had parts of our network wired with 10base5 (thick ethernet) with vampire taps, and had some segments wired with transceivers which had a pair of threaded "type N connectors" (not sure if this is the proper name ... it's what my boss called them ... looked like oversized CATV F connectors). The xceiver boxes were pretty big (4-5 inches wide) and connected to the node via an AUI drop cable. The N connectors were easier to deal with than the vampire taps. To add a node, you just "spliced" a new xceiver box onto the line where you needed it by screwing a new length of cable into the new + existng xceivers, then connecting the AUI drop cable from the box to the node. Eventually we went to 10base2 (thin ethernet) and then like everyone else, 10baseT hubs.
Current thread:
- Re: what about 48 bits?, (continued)
- Re: what about 48 bits? James Hess (Apr 04)
- Re: what about 48 bits? Jon Lewis (Apr 05)
- Re: what about 48 bits? Valdis . Kletnieks (Apr 05)
- Re: what about 48 bits? Patrick W. Gilmore (Apr 05)
- Re: what about 48 bits? Valdis . Kletnieks (Apr 05)
- Re: what about 48 bits? joel jaeggli (Apr 05)
- Re: what about 48 bits? Jon Lewis (Apr 06)
- Re: what about 48 bits? Valdis . Kletnieks (Apr 05)
- Re: what about 48 bits? Larry Sheldon (Apr 05)
- Re: what about 48 bits? Michael Sokolov (Apr 04)
- Re: what about 48 bits? Mark Smith (Apr 04)
- Re: what about 48 bits? Jim Burwell (Apr 04)
- Re: what about 48 bits? Jorge Amodio (Apr 04)
- Re: what about 48 bits? Steven Bellovin (Apr 04)
- Re: what about 48 bits? Jorge Amodio (Apr 04)
- Re: what about 48 bits? Mark Smith (Apr 04)
- Re: what about 48 bits? Joe Greco (Apr 07)
- Re: what about 48 bits? Stefan Bethke (Apr 07)