4 Port 1000 MB "Hub"

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Is there anyone that is aware of a low cost 4 port 10/100/1000 MB hub
that is available? There seems to be a lot of switches around but not
any hubs.  I am looking for something I can easily insert in an Ethernet
network to look at traffic on a given segment of the the network. I
currently use a Netgear DS104 for that purpose but that is only 10/100.
    

Re: 4 Port 1000 MB "Hub"


nospam@notreal.com wrote:

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Rumor is that no repeaters (both repeaters and switches count as hubs)
exist.  The standard allows for half duplex, and NICs may or may
not implement it.

It might be that you can find a switch that can be configured to
forward on all ports, but it still would be a switch (technically,
bridge).

-- glen    

Re: 4 Port 1000 MB "Hub"


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To the best of my knowledge, no Gigabit Ethernet repeater was ever
commercially available.

Also, a "10/100" hub is most likely a 10 Mb/s hub in the same box as a
100 Mb/s hub, with a bridge/switch interconnecting the two. A single
repeater cannot operate at more than one data rate.

--
Rich Seifert              Networks and Communications Consulting
                                 21885 Bear Creek Way
(408) 395-5700        Los Gatos, CA 95033
(408) 228-0803 FAX

Send replies to: usenet at richseifert dot com

Re: 4 Port 1000 MB "Hub"


In article <2794bea5-2e3b-4fd0-8c67-f3c906eeeaf1
@u18g2000pro.googlegroups.com>, usenet@richseifert.com says...
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I was afraid of that.  Is there any alternative, other than Linux with=20
two NICs and iptables?   Is there such a thing as 4 port 10/100/1000=20
switch that has one port that can mirror?   You would think I am not the=20
only one looking for such an animal for portable use and that others=20
might already doing this somehow. =20

Thanks to both of you for responding.

Re: 4 Port 1000 MB "Hub"


nospam@notreal.com wrote:
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It is designed for a 19" rackmount (it is wide but shallow) but there
is the HP ProCurve 1700 series, which offers an 8 port version.

In the small size, there is an 8 port ProCurve 2520G that looks to be
about the size you might prefer, its data sheet suggests it does port
mirroring - it also offers PoE which may be more than you want.  I've
no idea on pricing - being one of the cobler's children I rarely have
shoes and then don't get them at retail.

rick jones
--
I don't interest myself in "why". I think more often in terms of
"when", sometimes "where"; always "how much."  - Joubert
these opinions are mine, all mine; HP might not want them anyway... :)
feel free to post, OR email to rick.jones2 in hp.com but NOT BOTH...

Re: 4 Port 1000 MB "Hub"


says...
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I thought we had a winner here in the 1700 series at under $100.00 for 8
ports, even if it is a little large, but on closer inspection it would
appear there is only one 1000 MB port.  The other 7 appear to be 10/100
only.

The good news is that your comments led me to look at the entire line
and it would also appear that the 1800 series does have all 8 ports at
10/100/1000.  It is a little more expensive but there do not seem to be
a lot of options around.  I will keep looking to see what else is out
there but at least I know there is at least one possible solution.


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I think that is a little out of my league at almost $1000.  I am retired
and this would be for personal use, or at least used where I volunteer
my time.

I now have another question but it would probably be better to start
another thread.

Thanks for your help.



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Re: 4 Port 1000 MB "Hub"


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The Procurve 1800 is getting hard to get now because it's been
replaced by the 1810G series. The 1810G-8 seems to be the same price
as the older 1800-8G model it replace, unless you can get a sweetheart
deal on an outgoing model it may make more sense to get a 1810G-8
rather than a box with End Of Sale "1 Dec. 2009 or while supplies
last".

It too supports port mirroring and seems to have a number of minor
enhacements but I've not used one yet (at work we have a few 1800 and
a lot of 1400 out in the "landscape" after we got burned by cheaper
"consumer" switches failing and sabotaging the network).

At first I assumed you could get similar models from other
manufacturers but if it has I couldn't find any in that kind of price
range with a quick check with the usual suspects.

Re: 4 Port 1000 MB "Hub"


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Thanks for the insight on the newer model.  I think I will look around
and see if there any deals for the unit that is sunsetting.  I really do
not need the latest and greatest and saving a few bucks is more
important.

Re: 4 Port 1000 MB "Hub"


nospam@notreal.com wrote:
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I'll ask the ProCurve guys about that.

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Not five minutes ago I was reading an email from one of the ProCurve
types mentioning the 1810G-8 - I suspect that is the switch you have
found.  In an interesting bit of symmetry to the 2520G-8, he mentioned
something about that switch being able to be powered *by* PoE.

rick jones
--
No need to believe in either side, or any side. There is no cause.
There's only yourself. The belief is in your own precision.  - Joubert
these opinions are mine, all mine; HP might not want them anyway... :)
feel free to post, OR email to rick.jones2 in hp.com but NOT BOTH...

Re: 4 Port 1000 MB "Hub"


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I always thought that hubs were multi-port repeaters and switches were
multi-port bridges.

rick jones
--
denial, anger, bargaining, depression, acceptance, rebirth...
                                     where do you want to be today?
these opinions are mine, all mine; HP might not want them anyway... :)
feel free to post, OR email to rick.jones2 in hp.com  but NOT BOTH...

Re: 4 Port 1000 MB "Hub"


(snip)
 
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As opposed to monoport repeaters and bridges?

-- glen

Re: 4 Port 1000 MB "Hub"


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:-) no, dual-port.

rick jones
--
The computing industry isn't as much a game of "Follow The Leader" as
it is one of "Ring Around the Rosy" or perhaps "Duck Duck Goose."
                                                    - Rick Jones
these opinions are mine, all mine; HP might not want them anyway... :)
feel free to post, OR email to rick.jones2 in hp.com but NOT BOTH...

Re: 4 Port 1000 MB "Hub"


It is unlikely that you will find a hub that works at 1000Mbps,
especially in a multi-speed configuration.  In any event, any device
which operates at multiple speeds will be a combination of hub ports and
internal bridges since, as has been mentioned already, true hubs operate
at a single speed on all ports.  What you want to look for is called a
"network tap," which is wired inline with the uplink port on a switch or
hub, and copies all traffic to a monitor port.  As an alternative, you
can use a switch which allows you to configure a "monitor port," which
can be configured to copy all traffic to the monitor port.

Al

nospam@notreal.com wrote:
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