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From: YAKUSHIJIN Masao <yaku@dnp.ad.jp>
To: FreeBSD-net-jp@jp.FreeBSD.org
In-Reply-To: Your message of "Fri, 1 Feb 2002 01:05:52 +0900".
	<020201010552.M0247475@mistral.imasy.or.jp>
Message-ID: <020201164046.M0720555@ns1.dnp.ad.jp>
X-Mailer: mnews [version 1.22PL5] 2001-02/07(Wed)
Date: Fri, 1 Feb 2002 16:40:49 JST
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X-Distribute: distribute version 2.1 (Alpha) patchlevel 24e+011218
X-Sequence: FreeBSD-net-jp 3528
Subject: [FreeBSD-net-jp 3528] Re: metric =?ISO-2022-JP?B?GyRCJE4bKEI=?=
 =?ISO-2022-JP?B?GyRCMFskSiRrRjEwbDdQTykbKEI=?= 
Errors-To: owner-FreeBSD-net-jp@jp.FreeBSD.org
Sender: owner-FreeBSD-net-jp@jp.FreeBSD.org
X-Originator: yaku@dnp.ad.jp

$BLt;U?@$G$9!%(B

<020201010552.M0247475@mistral.imasy.or.jp>$B$K(B
$B$*$$$F!$(Bmistral@imasy.or.jp$B$5$s$O=q$-$^$7$?!#(B

  |   $B$h$/3P$($F$J$$$s$G$9$,!"(B
  | 
  |  route add default 192.168.1.1 1
  |  route add default 192.168.2.1 2
  | 
  | $B$G$G$-$^$;$s$G$7$?$C$1!)(B

$B$3$l$r<B9T$9$k$H!$2<5-$N$h$&$J7PO)$,:\$C$F$-$F!$(B
$B<B:]$K$O(B 192.168.2.1 $B$,(B gateway $B$H$7$F;HMQ$5$l$F(B
$B$$$k$h$&$G$9(B(traceroute $B$G3NG'$7$^$7$?(B)$B!%(B
$B!t(Bmetric 1 $B$H$7$F@_Dj$7$?$D$b$j$N(B gateway $B$,;HMQ(B
$B!t$5$l$F$$$J$$;~E@$G!$2?$+0c$&$h$&$J5$$,$7$^$9!%(B

Destination        Gateway            Flags    Refs      Use  Netif Expire
0&0x2              192.168.2.1        UGSc        1       14   fxp1 =>
0&0x1              192.168.1.1        UGSc        0        0   fxp0


$B$3$l$G4|BTDL$j$NF0:n$r$9$k$+$I$&$+;n$7$F$_$^$7$?$,!D!%(B

$B%5%V%M%C%H$N30$N%^%7%s$K(B ping $B$rBG$A$CJ|$7$K$7$F!$(B
fxp1 $B$N%1!<%V%k$rH4$$$F$_$^$7$?!%(B
$B$3$l$K$h$j(B 192.168.2.1 $B$,(B unreachable $B$K$J$C$?$N$G!$(B
192.168.1.1 $B$K(B gateway $B$r@Z$jBX$($FM_$7$$$N$G$9$,!$(B
20$BJ,$/$i$$J|CV$7$F$b!$$&$^$/@Z$jBX$o$C$F$/$l$^$;$s!%(B


$B$d$O$j!$(BFreeBSD $B$G$O!$F0E*%k!<%F%#%s%0$rMQ$$$J$$8B$j!$(B
  $B;d(B> $B$H$$$&4D6-$G!$(Bdefault route $B$r!$(B
  $B;d(B>  router1 $B$,@8$-$F$$$k>l9g$O(B router1
  $B;d(B>  router1 $B$,;`$s$G$$$k>l9g$O(B router2
  $B;d(B> $B$N$h$&$K@Z$jBX$($?$$$N$G$9!%(B
$B$N$h$&$J$3$H$O=PMh$J$$$N$G$7$g$&$+!)(B



<sl3d0mxbvq.fsf@belldandy.vsp.cpg.sony.co.jp>$B$K(B
$B$*$$$F!$(Bugai@vsp.cpg.sony.co.jp$B$5$s$O=q$-$^$7$?!#(B

  | YAKUSHIJIN Masao <yaku@dnp.ad.jp> writes:
  | 
  |   > FreeBSD4.5R $B$G!$(Bmetric $B$N0[$J$k(B default route $B$r(B
  |   > $BFs$DF~$l$?$$$N$G$9$,!$$&$^$/$$$-$^$;$s!%(B
  | 
  | $BFs$D$"$C$?$i(B default $B$8$cL5$$$H;W$&$s$G$9$,!D(B

default route $B$O!$(B0.0.0.0/0 $B$N7PO)>pJs$N$3$H$G$9!%(B
$B7PO)A*Br$O(B longest prefix match $B$G$9$N$G!$B>$K(B
match $B$9$k7PO)$,L5$$$H$-$K!$:G8e$K(B match $B$9$k7PO)(B
$B$H$$$&0UL#$G!$(Bdefault route $B$G$9!%(B

default route $B$,!$$R$H$D$N%[%9%H$KI,$:$R$H$D$7$+(B
$B@Z$l$J$$$H$$$&$3$H$O$"$j$^$;$s!%(B
$B8=$K!$(BRFC1122 $B$K2<5-$N$h$&$J5-=R$,$"$j$^$9!%(B

            When there is no route cache entry for the destination host
            address (and the destination is not on the connected
            network), the IP layer MUST pick a gateway from its list of
            "default" gateways.  The IP layer MUST support multiple
            default gateways.


  | $B$G$I$&$7$F(B metric $B$,=P$F$/$k$N$+$o$+$j$^$;$s!#(B
  | metric $B$OAj<j@h$^$G$N(B hop $B?t$G$9$+$i!#(B

$BA0=R$N(B RFC1122 $B$K$O!$(B
         3.3.1.4  Dead Gateway Detection
         3.3.1.5  New Gateway Selection
$B$H$$$&ItJ,$,$"$j$^$9!%(B
$B$3$l$K=>$C$F<BAu$5$l$F$$$l$P!$$*$=$i$/!$(Bmetric 1 $B$N(B 
gateway $B$,(B unreachable $B$K$J$C$?$H$-$K!$(Bmetric 2 $B$N(B 
gateway $B$r?7$?$KA*Br$7$F$/$l$k$3$H$K$J$k$H;W$C$?$+$i(B
$B$G$9!%(B


  |   > $BB>$N(B OS $B$G$"$l$P!$Nc$($P(B
  |   >  route add default 192.168.1.1 metric 1
  |   >  route add default 192.168.2.1 metric 2
  |   > $B$N$h$&$J@_Dj$G2DG=$J$N$G$9$,!$(BFreeBSD $B$GF1Ey$NF0:n$r(B
  |   > $B$9$k$h$&$J@_Dj$O2DG=$G$7$g$&$+!)(B
  | 
  | $BB>$N(B OS $B$H$O(B Windows $B$G$7$g$&$+!#(B

$B3NG'$7$?$N$O!$(BWindows2000 $B$H(B Linux(RedHat7.2) $B$G$9!%(B
Windows2000 $B$G$O!$$9$0$K@Z$jBX$o$C$F$/$l$^$9$7!$(B
Linux$B$G$b!$%1!<%V%k$rH4$$$F(B 5$BJ,$[$I$G@Z$jBX$o$j$^$7$?!%(B


$B$&!<$s!$%[%s%H$O(B FreeBSD $B$r;H$$$?$$$N$G$9$,!$(B
$B:#2s$O;~4V$,L5$$$N$G!$(BLinux $B$r;H$&$3$H$K$7$^$9!%(B

$B2?$+>pJs$r;}$C$F$$$kJ}$,$$$i$C$7$c$l$P!$7QB3$7$F(B
$BJg=8$7$^$9$N$G!$$465<x2<$5$l$P9,$$$G$9!%(B

--
yaku@dnp.ad.jp
