From owner-FreeBSD-net-jp@jp.freebsd.org  Tue Oct 14 16:21:15 1997
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To: FreeBSD-net-jp@jp.freebsd.org
In-reply-to: Your message of "Tue, 14 Oct 97 14:19:21 JST."
             <97Oct14.141723jst.3468@patio.rios.co.jp> 
Date: Tue, 14 Oct 1997 16:21:11 +0900
From: Takeshi Amaike <amaike@TokyoNet.AD.JP>
Reply-To: FreeBSD-net-jp@jp.freebsd.org
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Subject: [FreeBSD-net-jp 239] Re: Result of test fxp with UTP5 cross cable 
Errors-To: owner-FreeBSD-net-jp@jp.freebsd.org
Sender: owner-FreeBSD-net-jp@jp.freebsd.org

> $B$"$H(BswitchingHUB$B$N%a%j%C%H!aB.EY$,B.$/$J$k$H$$$&$N$OAa7W$+$J$H;W$$$^$9!#(B
> $B6KC<$JOC(BHUB$B$K(B2$BBf$7$+@\B3$5$l$F$$$J$$>l9g$GBgNL$N%G!<%?$r$d$j$H$j$9$k(B
> $B>l9g$O!"DL>o$N(B100M$B$N(BShareHUB$B$NJ}$,Aa$$$+$b!#(B

  $B$=$j$c$=$&$G$9$M!#(BFastEthernet$B$O$I$s$J$K6lO+$r$7$?$C$F(B 100BaseTX$B$J$s$@(B
$B$+$i(B 100Mbps$B$,8BEY$G$9!#B.$/$J$k$o$1$"$j$^$;$s$h$M!#(B

> switching$B$O%a%b%j$K0lEY%m!<%I$7$^$9$7!"%a%b%j$,>/$J$$$H%U%m!<@)8f$N$?$a$K(B
> $B$o$6$H%3%j%8%g%s$rJV$7$?$j$7$^$9$7!#(B

  $B$3$l$O!"J*$K$b$h$j$^$9$M!#%Q%1%C%H$N%U%)%o!<%IJ}<0$,(B FastForword$B$+(B
Store and Forward $B$+$K$h$C$FJQ$o$C$FMh$^$9$7!"(BTTL $B$bJQ$o$C$FMh$^$9!#$3$N(B
$B$"$?$j$OMxMQ$9$k4D6-$K$"$o$;$F?'!9%F%9%H$7$J$$$H!"!V$3$l$,0lHV!W$J$s$F4D(B
$B6-$O:n$l$^$;$s!#(B

  $B$=$l$H!"%3%j%8%g%s$8$c$J$/$F(B frame error$B$GMn$7$F$k$N$b$"$j$^$9!#(B

> 1$B$D$N%5!<%P!<$KA4$F$N%/%i%$%"%s%H$N$,IQHK$KMW5a$r=P$9;~$H$+$b5?Ld$G$9$M!#(B

  $B$5$i$K!"$=$l$>$l$,8DJL$KF0:n$7$F!"=PNO$,=P8}!J%k!<%?!K$K=8Cf$9$k$h$&$J(B
$B>l9g$O!"(BAll FastEther $B$H$+$d$C$F$A$c$$$1$^$;$s!#8D!9$K(B 100Mbps$BM_$7$$$J$i(B
up stream $B$O(B Gigabit-Ether$B$D$+$&$H$+!JH>J,>iCL!K!#(B

> switching$B$O%M%C%H%o!<%/A4BN$N$?$a$H9M$(!"8D!9$NDL?.B.EY$r>e$2$k$N$G$O(B
> $B$J$$$H3d$j@Z$i$J$$$H$$$1$J$$$+$J$H;W$C$F$^$9!#(B

  $BNc$($P(B NewsServer $B$rB?CJ$GAH$`$H$+$7$?>l9g!"%m!<%+%k$J%M%C%H%o!<%/Fb$G(B
$B$NDL?.$,IQH/$7$^$9$+$i!"$=$&$$$&>l9g$K$O(B Switch $B$O8z2LE*$G$9!#(B

  $B$5$i$K!"(BFullDuplex$B$,9T$($k(B Switch $B$r;H$C$?$j$9$k$H$h$jM}A[$K6a$$>uBV$G(B
$B%M%C%H%o!<%/$r;H$($^$9$M!#(B

  $B<B:]!"(B10BaseT $B$N(B SwitchingHUB $B$G(B 8$BBfDxEY(B(2:6) $B$rF0$+$7$F$$$?;~$O(B outgoing
packet$B$HF1?t$N(B collision$B$,=P$F$$$?$+$C$?!K$N$KBP$7!"(BDumb$B$J(B FastEther$B$G$O(B
10%$BDxEY!"(BFullDuplex$B2DG=$J(B FastEthernet Switch $B$K$7$?$i(B collision free $B$K(B
$B$J$C$F$^$9!#(B

  $B$D$^$j!"C1=c$J(B Switch or Dumb hub $B$N;~$O<+J,08$N(B incoming packet$B$K$h$C(B
$B$F<+J,$,=P$9(B outgoing packet$B$,AK32$5$l$F$?$H$$$&!"%J%5%1%J%$OC$b!J$$$d!"(B
$B:G6a$N%G!<%?N.NL$r9M$($k$H>P$C$F$b$$$i$l$J$$$s$G$9$h!K$"$k$N$G$9!#(B

$B!t$3$N(B 1$B!A(B 2$BG/$G(B Ehternet $B$,%-%i%$EY$,BgI}(B Up $B!J>P!K(B
--
					$B$"$^$$$1!wEl5~%$%s%?!<%M%C%H(B
					amaike@TokyoNet.AD.JP
