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ethernet

 

  2  definitions  found 
 
  From  WordNet  r  1.6  [wn]: 
 
  ethernet 
  n  :  a  type  of  networking  technology  for  local  area  networks; 
  originally  developed  by  Xerox  Corporation;  coaxial  cable 
  carries  radio  frequency  signals  between  computers  at  a 
  rate  of  10  megabits  per  second 
 
  From  The  Free  On-line  Dictionary  of  Computing  (13  Mar  01)  [foldoc]: 
 
  Ethernet 
 
    A  {local  area  network}  first  described  by 
  Metcalfe  &  Boggs  of  {Xerox  PARC}  in  1976.  Specified  by  {DEC}, 
  {Intel}  and  {XEROX}  (DIX)  as  {IEEE  802.3}  and  now  recognised 
  as  the  industry  standard. 
 
  Data  is  broken  into  {packets}  which  are  transmitted  using  the 
  {CSMA/CD}  {algorithm}  until  they  arrive  at  the  destination 
  without  colliding  with  any  other  The  first  {contention  slot} 
  after  a  transmission  is  reserved  for  an  {acknowledge}  packet. 
  A  {node}  is  either  transmitting  or  receiving  at  any  instant. 
  The  {bandwidth}  is  about  10  Mbit/s.  Disk-Ethernet-Disk 
  transfer  rate  with  {TCP/IP}  is  typically  30  kilobyte  per 
  second 
 
  Version  2  specifies  that  {collision}  detect  of  the  transceiver 
  must  be  activated  during  the  {inter-packet  gap}  and  that  when 
  transmission  finishes  the  differential  transmit  lines  are 
  driven  to  0V  (half  step).  It  also  specifies  some  {network 
  management}  functions  such  as  reporting  {collisions},  retries 
  and  {deferrals}. 
 
  Ethernet  cables  are  classified  as  "XbaseY",  e.g.  10base5, 
  where  X  is  the  data  rate  in  {Mbps},  base"  means  "{baseband}" 
  (as  opposed  to  {radio  frequency})  and  Y  is  the  category  of 
  cabling.  The  original  cable  was  {10base5}  ("full  spec"), 
  others  are  {10base2}  ("thinnet")  and  {10baseT}  ("twisted 
  pair")  which  is  now  (1998)  very  common.  {100baseT}  ("{Fast 
  Ethernet}")  is  also  increasingly  common. 
 
  {Usenet}  newsgroup:  {news:comp.dcom.lans.ethernet}. 
 
  {(http://wwwhost.ots.utexas.edu/ethernet/ethernet-home.html)} 
 
  (1997-04-16)




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