[c-nsp] list wisdom please, Cisco switches

[Mark Tinka]

On Tuesday, January 15, 2013 05:58:12 PM Nick Hilliard 
wrote:

> I don't get why people shouldn't be able to ping each
> other / etc.  Isn't this traffic functionally equivalent
> to any other Internet traffic?  What's different about
> it?

GPON implementations standardize this already, i.e., users 
are unable to directly communicate with one another via 
Layer 2.

They can communicate with one another via the upstream Layer 
3 aggregation device (which becomes IP communications rather 
than Layer 2 communications), at which point operators can 
institute various security mechanisms to protect both their 
customers and their network.

If you're interested, TR-156 from the Broadband Forum speaks 
to some pretty cool security features required in GPON 
implementations that the Ethernet switching world could 
learn from for these kinds of deployment scenarios.

Mark.
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