Paul Johnson wrote:
On Tuesday 02 August 2005 01:45 pm, Jeff Coppock wrote:
Lei Yu wrote:
I think the hub does support full duplex. It is netgear dual
speed hub model DS104.
These "dual-speed" hubs are still hubs. They simply provide a
single switch (bridge) between the 10Mbps and the 100Mbps segments.
Essentially, it combines a 10Mbps hub and a 100Mbps hub into a
single unit and then a switch circuit connects the two.
Aren't home-user oriented dual-speed ethernet devices typically
implemented in the form of a switch?
Not from what I see. But both are available, you're just gonna pay more
for a "switch" than for a "hub" since there is more circuitry in the switch.
If the dual-speed ethernet device says "hub", each unit has a built-in
self-learning bridge which provides the communications link between the 10
and 100 Mbps network devices. The intelligent bridge automatically manages
network traffic such that 100 Mbps traffic does not unnecessarily crowd the
10 Mbps network segment and 10 Mbps traffic does not crowd the 100 Mbps
segment.
If the dual-speed ethernet device says "switch", then each port is bridged
individually, so each port supports both HD and FD.
jc
--
Jeff Coppock Systems Engineer
Diggin' Debian Admin and User
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