The Uplink / Downlink ports may be  proprietary scheme of DLink's to support
cascading multiple co-located hubs to make them look like a single 'logical'
hub for Ethernet configuration rules (ie: not more than 4 segements and 3
hubs between nodes).

You can use ordinary hub ports to connect to another hub if you use a
crossover cable.

A 'jabber' is when an ethernet card starts transmitting and refuses to stop,
typically caused by some sort of hardware failure.

Anti-jabber protection in a hub locks out a  jabbering port.

Bob Ammerman
RAm Systems


----- Original Message -----
From: "Brendan Moran" <bmoran@MILLENNIUM.CA>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Monday, August 26, 2002 12:24 PM
Subject: [OT]: DL-1000 12-port + BNC + AUI hub


> I have a nifty old DL-1000 10Base-T hub that has a lot of nice features.
>
> It has:
> 12 x RJ45
> 1 x BNC
> 1 x AUI
> 1 x uplink port
> 1 x downlink port
>
> The problem is that I can't find any information about it.  As near as I
can
> tell, D-Link is now not even admitting that it exists.  I've looked on
their
> website for material in the past, and found nothing.  Any references I've
> found on the web have not held any links to documentation.
>
> What I want to know is how to use the uplink/downlink ports, by that, I
mean
> how do I use those ports to connect to other hubs, or even to servers.
>
> I realise that hubs are not the greatest of networking devices, but I
> already have it, and I'd like to know how to use it :)
>
> Oh, and I know what a collision is, but what's jabber?
>
> --Brendan
>
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