[c-nsp] Erspan on 7600

[Phil Mayers]

On 08/10/2010 11:46 PM, Mack McBride wrote:
> What about software switched traffic (mostly glean traffic)?
> Doesn't that get handled by the RP?

Yes. But such traffic must come in via a gigE or vlan interface, and 
ERSPAN can capture it there (in hardware)

You can *also* span the RP/SP itself, and as I understand it again this 
is done in hardware. Effectively it SPANs the internal gigE port facing 
the RP/SP

We've used ERSPAN on some truly phenomenal bitrates; it *is* done in 
hardware.