Thanks ll for replying!
My objective is to control the traffic between X.8<--->X.16 by using a bridge machine in between with 2 NIC cards so that the configuration is like:
X.8<------>(X.41 X.40)<------->X.16
All are with /24 subnet mask.
I intend to add X.40 and X.41 interface to the bridge using brctl and then use dummynet pipes to control the traffic between X.8<---->X.16 so that all the traffic flowing between X.8 and X.16 passes through the bridge machine.
I have no router/hubs connected in the network and the only physical connections are between X.8<---->X.41 and X.16<----->X.40 directly back to back with cables.
Now the X.8<---->X.41 connectivity is OK using ping but no connectivity between X.16<---->X.40 ping fails both side (Destination Host Unreachable).
The problem only arises when both cables are connected in the bridge machine of X.40 and X.41 interfaces. With single connections both paths work perfectly.
My question is: why X.16<----->X.40 ping fails even they are directly connected.
Moreover, X.8----->X.40 is giving ping replies even though not directly connected nor bridging is enabled.
Summarizing, only the X.16---->X.40 ping is not working...all other connections are OK.
Do their MAC addresses at least show up in your ARP tables when they try to ping each other?
arp is a lower level of communication than most firewalls and can communicate even on a severely mis-configured network. When you try and do any sort of communication between hosts, whether they succeed or not they should at least get each other's MAC addresses in their ARP tables. If they don't even see each other on ARP, I suspect a hardware or cable issue.
Thanks to all for replying!
I am able to solve the problem by adding a bridge between X.40 and X.41 so that now end-to-end X.8<---->X.16 works perfectly. I don't care other connectivity issues since this is what was required by me. Moreover, by adding dummynet pipes, I am able to control the traffic between X.8<--->X.16 which was my objective.
Hello unix community,
Could anyone tell me what is the macosx command for:
1) ip hostroute to bridge:
ip route add 188.40.1.40/32 dev br0
(linux command)
/32 ist for netmask? Because I use /29.
2) and IP-Forwarding:
net.ipv4.ip_forward = 1
(linux command)
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thanks!