Hi seems ok check /proc/sys/net/ipv4/conf/[*]/rp_filter what it does is explained in the adv routing howto almost at the end. Hope it helps bye > ----------------------------------- ( Ethernet) > > > Sun-1 Linux Sun-2 > 210.32.131.97 192.168.1.1(eth0) 192.168.1.8 > 210.32.131.166(eth0:0) > > Routing table : > > Sun-1: 192.168.1.0/24 ---> 210.32.131.166 > default -----> 210.32.131.2 > > Linux : default---> 210.32.131.2 > ( I add no explicit routing table about the twodirect > connected network ) > > Sun-2 : default --> 192.168.1.1 On Tuesday 29 May 2001 11:53 am, shen jing wrote: > Hi: > > I'm using a linux box ( Rh7.1 ) as a router which connect two Solaris2.6 > > box. > The three computer is interconnected by ethernet, each computer has > only on ethernet adapter. > > The following is my network connection : > > ----------------------------------- ( Ethernet) > > > Sun-1 Linux Sun-2 > 210.32.131.97 192.168.1.1(eth0) 192.168.1.8 > 210.32.131.166(eth0:0) > > Routing table : > > Sun-1: 192.168.1.0/24 ---> 210.32.131.166 > default -----> 210.32.131.2 > > Linux : default---> 210.32.131.2 > ( I add no explicit routing table about the twodirect > connected network ) > > Sun-2 : default --> 192.168.1.1 > > While I exec "ping 192.168.1.8 "on Sun-1, it succeed, with 0% packet > loss. > > But when I exec "ping 210.32.131.97" on Sun-2, the ping always hang > with no output, when I interrupt it with "Ctl-C', it shows "100% packet > loss". > > I do tcpdump on linux and snoop on Sun to find out what happened, but > all detailed record shows "ICMP echo requect/reply " has been delivered > between Sun-1<-->linux, Linux<-->Sun-2 > > And I can telnet/ftp between Sun-1 & Sun-2. > > Is there someone will do me a favor to explain why this happens ? Is > there any configuration error with my linux box ? > > Thanks in advance and each word will be highly appreciated. > > James Shen > > > > > > > > _______________________________________________ > LARTC mailing list / LARTC@xxxxxxxxxxxxxxx > http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: > http://ds9a.nl/2.4Routing/