Hello,
Thanks Peter for your reply.
I tried with the following example based on the message to which you
directed me to.
But still I have a few doubts.
My setup is like this.
+--------+eth0 +---------------+ trunk
( Box M )------| router/switch |-----------
( ) eth0| box A |eth1 | |
+--------+ +---------------+ | |
vlan2| v3|
| |
+--------+ |
| |
eth0| eth0|
+--------+ +--------+
| Host | | Host |
| box B | | box C |
+--------+ +--------+
I made the following configurations.
Box A:
ifconfig eth0 0.0.0.0
ifconfig eth1 0.0.0.0
ip addr add 10.0.0.10/24 broadcast 10.0.0.255 dev eth0
ip link set eth0 up
ip link set eth1 up
vconfig set_name_type DEV_PLUS_VID_NO_PAD
vconfig add eth1 2
vconfig add eth1 3
brctl addbr br0
brctl addif br0 eth1.2
brctl addif br0 eth1.3
ip addr add 20.0.0.10/24 broadcast 20.0.0.255 dev eth1.2
ip addr add 20.0.1.10/24 broadcast 20.0.1.255 dev eth1.3
ip link set eth1.2 up
ip link set eth1.3 up
ip link set br0 up
iptables -F
iptables -P FORWARD DROP
iptables -A FORWARD -i eth1.2 -o eth0 -s 20.0.0.0/24 -j ACCEPT #v2->inet
iptables -A FORWARD -i eth0 -o eth1.2 -d 20.0.0.0/24 -j ACCEPT #inet->v2
iptables -A FORWARD -i eth1.3 -o eth0 -s 20.0.1.0/24 -j ACCEPT #v3->inet
iptables -A FORWARD -i eth0 -o eth1.3 -d 20.0.1.0/24 -j ACCEPT #inet->v3
iptables -t nat -A POSTROUTING -o eth0 -s 20.0.0.0/16 -j MASQUERADE
echo 1> /proc/sys/net/ipv4/ip_forward
Box M:
ifconfig eth0 10.0.0.20 netmask 255.255.255.0 up
Box B:
ifconfig eth0 20.0.0.20 netmask 255.255.255.0 up
Box C:
ifconfig eth0 20.0.1.20 netmask 255.255.255.0 up
This is my setup.
If I ping from Box A for the Host (20.0.0.20),
There is no reply. But I could see at the Ethereal on BoxB eth0, I could see
the ARP packet of who has 20.0.0.20 from 20.0.0.10.
But I could not get the Reply from the 20.0.0.20 being sent out.
Please let me know whether anything is wrong in my setup/configuration.
---------------------------------
Another thing that I tried in the same setup is as follows:
I configured VLAN on Box B to see whether ping will work. But still it was
not fruitful.
This configuration on Box B is as follows:
ifconfig eth0 0.0.0.0
vconfig add eth0 2
ifconfig eth0.2 20.0.0.20 netmask 255.255.255.0 up
But still I could not ping to 20.0.0.10 from 20.0.0.20 or the reverse also.
-----------------------------------
Could someone help me out in getting the ping work in this topology.
Thanks,
Bye,
Kannan.J
On Fri, Nov 19, 2004 at 09:07:16AM +0530, Kannan wrote:
> I am trying to understand VLAN and Bridging Interactions in Linux.
[..]
> Can some one throw me some details?
Perhaps you can pick something up from
http://www.lanforge.com/pipermail/vlan/2004-November/000105.html
//Peter
