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Re: Hardware capture platforms

  • From: Paul Jakma
  • Date: Fri Aug 01 10:57:07 2008
On Fri, 1 Aug 2008, Paul Jakma wrote:

GigE is PtP at the physical-layer by the IEEE 802.3ad specification. It's

Gah, I meant 802.3ab, of course.

just not possible to have a dumb, GigE hub. You have to have a switch that can be told to L2-forward everything to one or more ports (e.g. through a port-mirroring feature, or by disabling MAC learning).

Also, though probably not terribly relevant, various switches have various bugs/malfeatures that cause them to consume certain kinds of frames rather than forward them (e.g. consuming all or certain kinds of ISO frames). 

regards,
--
Paul Jakma	[email protected]	[email protected]	Key ID: 64A2FF6A
Fortune:
Anything is possible, unless it's not.