From: gladston@br.ibm.com
Date: Mon Apr 11 2005 - 16:06:20 GMT-3
Hi Tim,
Let me see if I can help in any way.
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quoted
Now, suppose the hub router is elected root and therefore one of the ppp
interfaces between the spokes is put into blocking state. What happens when
frames from spoke 1 need to reach spoke 2. Will the hub router forward
frames from 1 pvc to the other pvc? Why or why not?
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Yes, why not?
As you mapped 'bridge' to the pvc, it will forward if it knows how to find the MAC and will forward if it does not know where the MAC is located (unknown frame)
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quoted
Now, suppose the hub router is configured with a separate p2p sub-interfaces
going to each spoke. Will the behavior of the hub be any different than
when configured with one multipoint interface with 2 pvc's? IOW, will the
hub consider each p2p subinterface a separate interface in its bridge table?
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Supposing the hub is still the root, I think the behaviour is exactly the same as multipoint interface: the hub receives the frame, looks its MAC table and forward the frame. But I never did a lab about it, so I hope you get more feedback.
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