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Re: Hardware capture platforms

  • From: Paul Jakma
  • Date: Fri Aug 01 11:08:33 2008

On Wed, 30 Jul 2008, Jon Kibler wrote:

However, there is a problem with your specification: No hub (that I am
aware of) can do 1Gbps. All hubs are 10/100 AFAIK.

GigE is PtP at the physical-layer by the IEEE 802.3ad specification. It's 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:
lisp, v.:
	To call a spade a thpade.