[rbridge] IS-IS per VLAN ?

[Joe Touch]

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Dino Farinacci wrote:
>>>My guess. No reason, no computational logic. Just an estimate.
> 
> 
>     Sorry I wasn't clear. I was referring to the number of rBridge nodes, so we
>     can understand how both the core-switch and edge-switch network needs to 
>     scale.

I would expect that a set of rbridge nodes could work anywhere a single
bridge could work, but that the overall total number of devices on the
L2 served by the system would not change substantially.

I.e., the primary goal of rbridge is better bandwidth between nodes by
the use of an alternative to a spanning tree inside the rbridge campus,
but it doesn't solve the problem that it's still part of the L2 system
into which it is plugged, and so I wouldn't expect scale to change much
- - EXCEPT where it is limited by spanning tree convergence.

Joe
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