On Sun, Mar 02, 2008 at 02:40:22PM -0700, [EMAIL PROTECTED] wrote: > My LAN has a Debian router, joule, and two subordinate > machines, curie and heaviside. The three connect to an > old Linksys 10Base-T hub. joule connects to a > cable modem through a second NIC and runs > ipmasq. > > Currently I want to add a third NIC to joule, > remove the hub and connect each of curie and heaviside > to a NIC in joule using a crossover cable. > All appears OK except that curie and heaviside fail to > communicate with each other.
Now you will have three networks. The first, from joule to the cable modem, a second from joule to curie, and a third from joule to heaviside. > > The output of cat /etc/network/interfaces > and netstat -r follow. > > Thanks for any ideas, ... Peter E. > > joule:~# cat /etc/network/interfaces > # This file describes the network interfaces available on your system > # and how to activate them. For more information, see interfaces(5). > > auto lo eth0 eth1 eth2 > # The loopback network interface > iface lo inet loopback > > # The primary network interface > iface eth0 inet dhcp > #iface eth0 inet static > > # The interface to curie > iface eth1 inet static > address 172.23.4.1, is curie 172.23.4.2? > netmask 255.255.255.0 > up route add -host 172.23.4.4 dev $IFACE > down route del -host 172.23.4.4 dev $IFACE You shouldn't have to add routes like this. > > # The interface to heaviside > iface eth2 inet static > address 172.23.4.1 change this to 172.23.5.1, and change heaviside's to 172.23.5.2 > netmask 255.255.255.0 > up route add -host 172.23.4.3 dev $IFACE > down route del -host 172.23.4.3 dev $IFACE You shouldn't have to add routes like this > > joule:~# netstat -r > Kernel IP routing table > Destination Gateway Genmask Flags MSS Window irtt Iface > heaviside * 255.255.255.255 UH 0 0 0 eth2 > curie * 255.255.255.255 UH 0 0 0 eth1 > 172.23.4.0 * 255.255.255.0 U 0 0 0 eth1 > 172.23.4.0 * 255.255.255.0 U 0 0 0 eth2 > 24.108.32.0 * 255.255.252.0 U 0 0 0 eth0 > default 24.108.32.1 0.0.0.0 UG 0 0 0 eth0 > > The problem is that you have two separate network segments but haven't made that clear to the system. Joule is triple-homed and so needs three IPs. /etc/hosts will have to reflect this too appropriatly on all three boxes. Doug. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
