On Wed, May 30, 2001 at 04:40:54PM +0800, shen jing wrote: > > Thank you very much. > > I've checked the file , they have the following content: > > /proc/sys/net/ipv4/conf/all/rp_filter : 1 > /proc/sys/net/ipv4/conf/default/rp_filter: 0 > /proc/sys/net/ipv4/conf/eth0/rp_filter: 0 > /proc/sys/net/ipv4/conf/lo/rp_filter: 0 > > the ip route says: > > [root@xxxxxx lo]# ip route > 192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.1 > 210.32.131.0/24 dev eth0 proto kernel scope link src 210.32.131.166 > 127.0.0.0/8 dev lo scope link > default via 210.32.131.1 dev eth0 > default via 210.32.131.1 dev eth0 src 210.32.131.166 metric 1 > [root@xxxxxx lo]# > > I don't understand what's the files under all/ and default/ for. > And the tcpdump on linuxbox and snoop on Sun both shows > icmp echo request and icmp echo reply has been received. > But why 'ping 210.32.131.97' always show nothing when executed > on 192.168.1.8? It might be that the linux router sends you ICMP redirects as the forwarding interface is the same as the incoming interface but it also should've happened when you "ping 192.168.1.8 "on Sun-1. How did you create eth0:0? With "ifconfig" or "ip addr"? What is the output of "ifconfig -a"? Do you see 210.32.131.166 as eth0:0 (meaning that it is an alias? If you'd created it with "ip addr" you shouldn't have had ":0" there. I'd suggest you to send the output of tcpdump when you "ping 210.32.131.97" on Sun-2 to see what is going on. Ramin > > > > James Shen
