Hardware capture platforms
Larry J. Blunk
ljb at merit.edu
Thu Jul 31 00:50:23 CDT 2008
Warren Kumari wrote:
> On Jul 29, 2008, at 10:43 PM, Darryl Dunkin wrote:
>> Hubs sure are fun...
> This might be a stupid question, but where can one get small hubs
> these days? All of the common commodity (eg: 4 port Netgear) "hubs"
> these days are actually switches.
> What I am looking for is:
> Small enough to live in my notebook bag (e.g.: 4 port with a wall wart.)
> While a tap would work, I'd prefer a hub because I can then use it to
> connect machines together in a pinch.
D-Link sells a smallish 8-port managed Gigabit switch that allows
you to disable learning on the ports -- DGS-3200-10 --
I don't know where they hide the manuals on the D-Link
US site, but Google turned them up on their Russian ftp server ??
While not incredibly cheap, it seems reasonable at about $300.
As a bonus, it seems to have pretty complete IPv6 support.
We wanted to do something similar with a 10G switch (SMC8708L2).
It let's you set the size of the MAC table, but not to zero. However,
we found that setting the size of the table to 1 entry effectively disabled
> In the past I have bought some cheap 4 port commodity switches (form
> Circuit City or somewhere similar), found the datasheet for the
> chipset (it was a Broadcom something or other) and tied the pin to
> ground that disables the learning mode (actually, I think that the pin
> just set the size of the learning table to be 0 entries). While this
> works, doing it once was more than enough :-)
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