[Server-devel] Is a USB-Ethernet NIC appropriate for the XS?

[Tim Moody]

Have you considered configuring the internal nic to listen on two ip 
addresses, lan and wan?  I think you said you are locating all of the XS 
machines centrally, so this might be an option depending on the networking 
infrastructure you have in the central location.  What would happen if you 
changed eth1:1 in the network-config script to eth0:1?  If at some point in 
the future you locate the XS at the school, then you might have an AA on a 
usb port and not need the second nic anyway.


> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 24 Mar 2009 14:26:20 +0545
> From: Bryan Berry <bryan at olenepal.org>
> Subject: Re: [Server-devel] Is a USB-Ethernet NIC appropriate for the
> XS?
> To: Ties Stuij <cjstuij at gmail.com>
> Cc: server-devel <server-devel at lists.laptop.org>, Bernie Innocenti
> <bernie at sugarlabs.org>
> Message-ID: <1237884080.9157.30.camel at hitman>
> Content-Type: text/plain
>
> That isn't the problem. I believe that USB 1.1 NIC's choke when they
> have multiple connections. I guess the "Rx polling" - whatever that is -
> causes so many interrupts that the NIC stops serving requests
>
> friends on server-devel, I highly recommend you use the "lsusb -v" to
> find out if your usb NIC is actually USB 2.0. Apparently a number of USB
> NIC's on the market are advertised as USB 2.0 but are actually 1.1
>
> On Tue, 2009-03-24 at 14:08 +0545, Ties Stuij wrote:
>> So Tony suggested just using the usb-ethernet thingies for the
>> internet-connection. USB1.1 is, what, 700kbps? What are the chances
>> that we can supply the schools with more bandwidth than that?
>>
>> /Ties
>>
>> On Tue, Mar 24, 2009 at 9:56 AM, Martin Langhoff
>> <martin.langhoff at gmail.com> wrote:
>> > On Tue, Mar 24, 2009 at 4:49 AM, Bryan Berry <bryan at olenepal.org> 
>> > wrote:
>> >> The ever helpful cjb and Mitch_Bradley directed me to the root of the
>> >> problem, the USB-ethernet devices I am using are USB 1.1 which has
>> >> horrible throughput. A USB-ethernet device that supports USB 2.0 
>> >> should
>> >> fix the problem.
>> >
>> > That's great news!  I'll also be delighted to hear about what hw you
>> > find that works...
>> >
>> > cheers,
>> >
>> >
>> > m
>> > --
>> >  martin.langhoff at gmail.com
>> >  martin at laptop.org -- School Server Architect
>> >  - ask interesting questions
>> >  - don't get distracted with shiny stuff  - working code first
>> >  - http://wiki.laptop.org/go/User:Martinlanghoff
>> > _______________________________________________
>> > Server-devel mailing list
>> > Server-devel at lists.laptop.org
>> > http://lists.laptop.org/listinfo/server-devel
>> >
> -- 
> Bryan W. Berry
> Technology Director
> OLE Nepal, http://www.olenepal.org
>
>
>
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