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[Xen-users] a problem of subnet crossing multiple machines

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Subject: [Xen-users] a problem of subnet crossing multiple machines
From: "Zhan Xiaoying" <xyzhan@xxxxxxxxxxxxx>
Date: Mon, 5 Dec 2005 23:26:16 -0000
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Thread-index: AcXyActx1PXCA9NPQlOpOUzQiy6s+wAEMg7AAfgVB9A=
Thread-topic: a problem of subnet crossing multiple machines
I have a difficult problem that I have tried everything but still can't
solve. The scenario is:
1. Three machines A (130.x.x.15), B (130.x.x.16), C(130.x.x.17) within a
subnet running Xen.
2. On each of them, there is one guest domain as configured as below:
left_node : Dom1 on A: eth0
central_node: Dom1 on B: eth0, eth1
right_node: Dom1 on C: eth0

The target is: I hope to point left-node's gw to eth0 on central node,
and point right-node's gw to eth1 on central_node; therefore the
central_node acts as a router, through which left-node and right-node
can ping each other.

I have tried configuring everything on one physical machine by creating
3 domains, and it worked. But when across three physical machines, it
fails. (by adding an extra routing entry, "vertically " each internal IP
address can ping the underlying public IP address.)

Any help is very much appreciated!

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