On 2 Apr 2000, Adam Johnson wrote:
> Hmm, couldn't you configure a static route in each computer for the other
> subnet, so they all know that both subnets are on the same wire?
I think a host needs to be configured with an address on a particular subnet
in order to send or receive traffic on it. Otherwise, it needs a gateway on
its local subnet to forward the traffic. A static route just tells the kernel
where to send a packet; there still has to be a way for that packet to get
there.
For example, I've got two hosts on my ethernet LAN. One is a Windoze
machine with address 192.168.10.5, the other is my Linux machine with
192.168.10.1 for the address. I can ping either box right now. But if I do
the following:
# ifconfig eth0 192.168.20.1
# route add -net 192.168.10.1 netmask 255.255.255.0 dev eth0
... then I can no longer pass traffic between the two.
# ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:10:5A:20:55:F1
inet addr:192.168.20.1 Bcast:192.168.20.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:6 errors:0 dropped:0 overruns:0 frame:0
TX packets:31 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
Interrupt:11 Base address:0xb800
# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
X.X.X.X * 255.255.255.255 UH 0 0 0 ppp0
192.168.20.0 * 255.255.255.0 U 0 0 0 eth0
192.168.10.0 * 255.255.255.0 U 0 0 0 eth0
127.0.0.0 * 255.0.0.0 U 0 0 0 lo
default X.X.X.X 0.0.0.0 UG 0 0 0 ppp0
#
--
Ben Scott <[EMAIL PROTECTED]>
| "When we try to pick out anything by itself, we find it hitched to |
| everything else in the universe." -- John Muir |
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