ΥڡϤƤʥ֥åޡɲΥڡޤϤƤʥ֥åޡ Υڡlivedoor åפɲΥڡޤlivedoor å

CSMA/CDʲå

EthernetϡХΥͥåȥƥǤ뤿ˡƱˤ1椷ǡ뤳ȤǤʤХͥåȥǡ⤷̿˾ͤƤޤäȤб뤿ΤΤCSMA/CDǤ롣

CSMA/CDλȤߤϼ̤Ǥ롣

ǡΩϩή뿮å롣Ǥ¾ΥǡϩήƤСǡƤͤΤʤΤǡǡԵ롣ʤ顢ϩˤʣΥԥ塼³ƤΤǡޤƱ2Υԥ塼ϩξ֤åȡ2ȤϩƤȽǤ2Ȥǡǽ롣ȡͤƤޤĤޤꡢǡΩϩåǤϴ˥ǡξͤɤȤϤǤʤȤȤǤ롣

ǡǡ륳ԥ塼ϡˤϩξ֤åǡξͤ򸡽ФˤϡǡǤָ˺ȤޤˤʤäƤ롣

ʤߤˡCSMA/CDפɽΰ̣ϼΤ褦ˤʤäƤ롣

  • CSCarrier Sense
    • ˥ǡѥåȤݤ˲Ƥ뤫ɤĴ٤롣
  • MAMultiple Access
    • Ƥ硢LANPCβѤ븢ʿ˻äƤ뤳ȡ
  • CDCollisrion Detection
    • ꥸȯ硢ǡѥåȤ˴줿ȤPCΤ餻ǡѥåȤκ򤹤褦׵᤹롣

η̡ϩλΨ⤯ʤ30%ʾˤȡԤǡͤȼơLANǽ޷˰Ƥޤ

CSMA/CDθŤԡϥ־Ǥϡꥸ󤬵äȤʬǡټ뤳ȤǸΤ롣ΤᡢǡɬǤʤФʤʤĤޤꡢΥǡĤġꥸȯѤ˼ݡȤԵƤʤФʤʤ櫓Ǥ롣
ϥ֥ƥꥸȥϥ֤䥹å󥰥ϥ֤ǤϡMACɥ쥹εˤŪľ̿ȤĤʤäƤ֤ȤΤǡCSMA/CDϻȤʤäơꥸȯѤ˼ݡȤԵʤƤ褯ƱˤǤ롣Ĥޤꡢ̿¸Ǥ櫓Ǥ롣

ʤCSMA/CDϡ嵬10GBaseǤѻߤޤäƤ롣