[Tfug] Need help on a server performance issue...

[Ammon Lauritzen]

I haven't seen a hub in production since like '02. Let us assume he
means switch.

But a hub would explain the problems, it would force half duplex
collisiony nightmares.

10mbit / 6 clients * 1/2 duplex = 0.8mbit throughput == ~100kbytes/sec ;)

On Mon, Sep 27, 2010 at 9:44 AM, Harry McGregor <micros at osef.org> wrote:
>  On 9/27/10 7:03 AM, Jim March wrote:
>> No, I have a router and a hub.  Every machine is getting DHCP off of a
>> quality router, but the router doesn't have enough physical ports.  So
>> one port off the router gets split eight ways at a dumb but powered
>> hub, which should be OK.
>>
> Where did you find a hub?
>
> There were a few 100mbit hubs, but not many.
>
> And even the cheapest 5 or 8 port devices today are switches.
>
>
>                        Harry
>
>> Jim
>>
>> On Mon, Sep 27, 2010 at 6:55 AM, b1nary g0d <b1naryg0d.ws at gmail.com> wrote:
>>> well keeping that in mind...he mentioned using a hub instead of a
>>> switch...any network tech will tell you thats a no-no unless you cant afford
>>> anything else
>>> --B1naryG0d
>>>
>>>
>>> On Mon, Sep 27, 2010 at 6:50 AM, Angus Scott-Fleming <angussf at geoapps.com>
>>> wrote:
>>>> On 26 Sep 2010 at 17:01, Jim March  wrote:
>>>>
>>>>> So...I'm thinking I need to see if the Ethernet port in the server is
>>>>> going south, OR check for something on the local net dumping excess
>>>>> packets.  Been years since I've had to wrassle with something like
>>>>> this.  Do I use Wireshark or the like to check for something screwy?
>>>> Back in the day when I used to support a lot of Netware networks, problems
>>>> like
>>>> this were often caused by 10/100 duplex mismatches caused by crappy
>>>> autonegociation between the switch and the server's network card.  Usually
>>>> we
>>>> made the problem go away by forcing the server NIC (and the switch port,
>>>> if we
>>>> had a manageable switch) to 100 mB Half Duplex.
>>>>
>>>> Also, are you running Samba on Ubuntu, with Active Directory?
>>>> --
>>>> Angus Scott-Fleming
>>>> GeoApps, Tucson, Arizona
>>>> 1-520-290-5038
>>>> Security Blog: http://geoapps.com/
>>>>
>>>>
>>>>
>>>>
>>>>
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>
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-- 
Ammon Lauritzen