[rbridge] TTL only - was RE: New fields in shim header?

[Joe Touch]

Silvano Gai wrote:
> Joe,
> 
> .....
> 
>> The enclosed source MAC indicates the source rbridge at the time it
> was
>> encapsulated; 
> 
> Not true if the source MAC was spoofed by a host connected to another
> RBridge. Do you agree?

True for all spoofing of MACs. That's not addressed by rbridges at all.

>> the appropriate source rbridge for that packet may change
>> by the time the packet arrives elsewhere in the rbridge campus.
> 
> If you put the source RBridge address in the frame, why should it
> change?

What might change is what the subsequent hops thinks the source _should_
be. The address in the packet wouldn't change, but would be useless in
that case.

Joe

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