Hi, I have two identical NIC's installed in a Mandrake 7.1 system. One interface is connected to ISDN and the other to a cable modem. The ISDN connection serves web and mail. I would like to relieve my ISDN connection of all personal web/ftp traffic (from my browser and ftp client) by utilizing the bandwidth of the cable modem on the 2nd interface. All web and mail traffic to the server on the 1st interface needs to continue as before. After I activate the cable NIC in Linuxconf, I can ping my server with another box using the cable address. Leaving it in this state (with IPV4 routing off) makes the mail server begin to "hold" mail for destinations on the cable network. (uh-oh) Next, I run "dhcdcd -R -h ______ eth1" which goes out and contacts the DHCP server and assigns an IP address to the interface. After a few hours (with no other tweaking) all my outbound traffic begins to flow across the cable connection. It appears that mail is no longer being accepted on the eth0 interface. Running netstat -r shows the cable route as the 1st default route before the eth0 default previously set. This isn't exactly what I was after (-; I've read dozens of FAQ's, but still don't know exactly how to tackle this problem. The Linux Routing FAQ has wonderful explanations, but no sample scenario close enough to mine (for me to understand). Can someone offer some guidance? Thanks!
