On Fri, Jul 18, 2003 at 04:45:45PM -0400, wes chow wrote: > > I've been playing with a multiple ethernet card configuration. There's a > lot of info online about how to deal with routing tables, *if the cards > are on different networks*. What I'm curious about is if I hook the two > cards up to the same switch, with different IP addresses. I'd like to be > able to write servers that bind to the different addresses but run on > the same machine.
Hello Wes, This doesn't exactly answer the question you're asking, but do you know about virtual IP addresses? You can assign as many addresses as you want to a single card, and achieve with one card what you're trying to do with two. If you define a device called eth0.0 and set it up like any other ethernet card (in /etc/conf.d/net and /etc/init.d/), it'll share the eth0 interface but listen at its own address. Nathan Meyers [EMAIL PROTECTED] > > Problem is, I can't get it to work. Here's ifconfig's output: > > eth0 Link encap:Ethernet HWaddr 00:0C:6E:3D:F2:B0 > inet addr:192.168.0.2 Bcast:192.168.0.255 Mask:255.255.255.0 > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > RX packets:214294 errors:0 dropped:0 overruns:0 frame:0 > TX packets:168729 errors:0 dropped:0 overruns:0 carrier:168376 > collisions:0 txqueuelen:100 > RX bytes:40815289 (38.9 Mb) TX bytes:115947325 (110.5 Mb) > Interrupt:10 Memory:ee000000-ee001080 > > eth1 Link encap:Ethernet HWaddr 00:50:BF:05:13:5F > inet addr:192.168.0.10 Bcast:192.168.0.255 Mask:255.255.255.0 > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > RX packets:30 errors:0 dropped:0 overruns:0 frame:0 > TX packets:4 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:100 > RX bytes:3087 (3.0 Kb) TX bytes:240 (240.0 b) > Interrupt:9 Base address:0x7000 > > > My routing table, though I don't think it matters: > > Kernel IP routing table > Destination Gateway Genmask Flags Metric Ref Use Iface > 192.168.0.0 * 255.255.255.0 U 0 0 0 eth0 > 192.168.0.0 * 255.255.255.0 U 0 0 0 eth1 > loopback localhost 255.0.0.0 UG 0 0 0 lo > default 192.168.0.1 0.0.0.0 UG 1 0 0 eth0 > > > The computer with two ethernet cards is called milhouse, and a seperate > machine on the network is boris. > > Now, when I ping 192.168.0.10 from boris, I only see eth0's light blink. > I can completely disconnect eth1 and it still works. > > "ip neigh show"'s output: > > boris root # ip neigh show > 192.168.0.2 dev eth0 lladdr 00:0c:6e:3d:f2:b0 nud reachable > 192.168.0.10 dev eth0 lladdr 00:0c:6e:3d:f2:b0 nud reachable > > It shows that it thinks 192.168.0.10 belongs to eth0 of milhouse (based on > the MAC address). How do I get milhouse to accept traffic to 192.168.0.10 > only on eth1? Is this possible at all? > > Thanks for any info or links... > > > Wes > > -- > [EMAIL PROTECTED] mailing list > > > -- -- [EMAIL PROTECTED] mailing list
