[Marco van den Bovenkamp <marco@xxxxxxxxxxxxxxxxxxx>]

Scott Lowrey wrote:

> Some hubs/switches will drop VLAN-tagged frames because they don't 
> understand the tag (which appears as a bogus type field to a 
> non-VLAN-aware device).

Shouldn't happen for any frame that's not longer than 1518 bytes 
including VLAN tag. Why should a switch care about what the frame looks 
like, besides size, source & destination MAC adresses and CRC? The only 
frames such a switch should drop are those that have more than 1496 
payload bytes, as they end up as well-formed frames longer than 1518 
bytes ('baby giants').

> I have, however, seen small NetGear gigabit 
> switches that will pass tagged packets even though they are not VLAN-aware.

And so they should, with the proviso that they are otherwise OK (not 
longer than 1518 bytes).

--

		Regards,

			Marco.