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From: nakano@math.ryukoku.ac.jp (Hiroshi NAKANO)
Subject: Re: routed logs 'unknown router'
In-Reply-To: odaka@vampire.ptd.intec.co.jp's message of 09 Dec 1995 06:00:57 GMT
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Organization: Ryukoku Univ., Seta, Otsu, Japan
References: <ODAKA.95Dec9150057@vampire.ptd.intec.co.jp>
Date: Tue, 12 Dec 1995 06:01:42 GMT
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$B$*$*$C!"EvJ}$G$bF1MM$N9=@.$r8!F$$7$F$*$j$^$9(B ($B8=:_$O(B router $B$NG<F~BT$A(B
$B$G$9(B)$B!#(B

# fj.net.ip $B$K$b?6$C$F$*$-$^$9!#(B $B$-$C$H>\$7$$J}$,$$$i$C$7$c$k$N$G$O$J(B
# $B$$$G$7$g$&$+!#(B

In article <ODAKA.95Dec9150057@vampire.ptd.intec.co.jp>
odaka@vampire.ptd.intec.co.jp (Morimichi Odaka[Technologies]) writes:

 |cisco $B$N%k!<%?$K(Bip address secondary $B$G%/%i%9$N0[$J$k(B address
 |$B$r(B1$B$D$N(BEthernet I/F $B$K$D$1$F(B no ip split-horizon $B$7$F(B rip $B$r(B
 |$B;H$C$F$$$k$N$G$9$,!"(Brouted -q $B$G(B routed $B$rF0$+$7$F$$$k(BUNIX$B%^(B
 |$B%7%s$,(B
 |
 |unknown router
 |
 |$B$H$$$&(Blog $B$rEG$$$F$7$^$$$^$9!#%k!<%F%#%s%0$K$OLdBj$J$$$N$G$9$,!"(B
 |30$BIC$K(B1$B2s(Blog$B$,$G$k$?$a!"$3$l$r;_$a$?$$$N$G$9$,!"$I$&$9$l$P$$$$$N(B
 |$B$G$7$g$&(B?

$B$3$N%a%C%;!<%8$,=P$k$H$$$&$3$H$O!"$=$N(B UNIX $B%^%7%s$,!"<+J,$,B0$7$F$$$J(B
$B$$H&$N%M%C%H%o!<%/>e$N(B gateway $B$+$i(B RIP $B$N%Q%1%C%H$r<u$1<h$C$F$$$k$H$$(B
$B$&$3$H$G$9$h$M!#(B

$B$3$N$h$&$J8=>]$,5/$3$k860x$H$7$F$O!"<!$NFs$D$,9M$($i$l$k$H;W$$$^$9!#(B

  1. cisco $B$,(B secondary address $B$r;}$D(B I/F $B$+$i(B RIP $B$N%Q%1%C%H$r(B
     broadcast $B$9$k:]$K!"$=$N(B IP datagram $B$N(B source address $B$H$7$F!">o(B
     $B$K(B primary ($B$"$k$$$O(B secondary) address $B$NJ}$rMQ$$$F$$$k!#(B

  2. cisco $B$,(B secondary address $B$r;}$D(B I/F $B$+$i(B RIP $B$N%Q%1%C%H$r(B
     broadcast $B$9$k>l9g$K!"@5$7$/(B primary $B$H(B seconday $B$N$=$l$>$l$N(B
     address $B$r(B source address $B$H$7$FFs$D$N(B IP datagram $B$r=P$7$F$$$k(B
     $B$,!"$=$N(B destination $B$H$7$F(B directed broadcast address $B$G$O$J$/!"(B
     limited broadcast address (255.255.255.255) $B$rMQ$$$F$$$k(B (cisco
     $B$N(B broadcast address $B$N%G%U%)%k%H$O(B 255.255.255.255 $B$@$C$?$h$&$J(B
     $B5$$,$7$^$9(B)$B!#$"$k$$$O!"(Bprimary $B$+(B secondary $B$+!"$=$N$I$A$i$+0lJ}(B
     $B$N%M%C%H%o!<%/8~$1$N(B directed broadcast address $B$r>o$KMQ$$$F$$$k!#(B

$B$3$l$O(B Ether $B$rN.$l$k(B RIP $B$N%Q%1%C%H$rD4$Y$F$_$l$PJ,$+$k$H;W$$$^$9!#(B

$B$b$7(B cisco $B$,!"@5$7$/<!$NFs<oN`$N(B RIP $B%Q%1%C%H$r$=$l$>$lAw$C$F$$$k$H$7(B
$B$?$i!"$`$7$mLdBj$O(B UNIX $B%^%7%s$NJ}$G!"(B kernel $B$J$j(B routed $B$J$j(B syslogd
$B$J$j$r2?$H$+$9$k$7$+J}K!$O$J$$$h$&$J5$$,$7$^$9!#(B :-)

  packet type 1:
      source address = primary address
      destination address = primary address $B$N%M%C%H%o!<%/$X$N(B 
    directed broadcast adddress
  packet type 2:
      source address = secondary address
      destination address = secondary address $B$N%M%C%H%o!<%/$X$N(B 
    directed broadcast adddress

# syslog $B%a%C%;!<%8<+BN$O32$N$J$$$b$N$@$H;W$$$^$9$,(B ...
--
Hiroshi Nakano <nakano@rins.ryukoku.ac.jp>
Ryukoku Univ., Seta, Otsu, Japan
