The XG700 does look pretty good at its pricepoint. We could get away
with 12 ports for a while I think. Heck, we might be able to buy 2 if
we can find them.

Thanks all for help. I would appreciate any experience people have
with transceivers too.

Tom

On Thu, Aug 5, 2010 at 4:11 PM, Andrew Lutomirski <[email protected]> wrote:
> On Thu, Aug 5, 2010 at 3:21 PM, Matt Dexter <[email protected]> wrote:
>> Hi Tom,
>>
>> were you aware of these ?
>> http://casper.berkeley.edu/wiki/Recommended_10_GbE_Hardware
>
> Sadly the list is out of date: some of the switches are no longer in
> production.  The XG700, for example, is great and cheap but you can't
> buy one without great difficulty.
>
> I'm not sure that manufacturers really care about CX4 anymore now that
> SFP+ parts are available.
>
> --Andy
>
>> http://casper.berkeley.edu/wiki/Equipment_Cables
>> Matt Dexter
>>
>> On Thu, 5 Aug 2010, Tom Downes wrote:
>>
>>> Casper-folks:
>>>
>>> Hoping to short-circuit a fair amount of research here in the hope
>>> that someone has had to do this already. I'll soon be looking to
>>> connect 10-20 ROACH boards by 10 gbe to a data acquisition
>>> computer(s).
>>>
>>> It seems like the smartest way of doing that is getting a 16-port
>>> switch or potentially two 8-port switches. But the 10 Gbe port on the
>>> ROACH seems to be CX4 which I take to be a less popular connector
>>> variety.
>>>
>>> What kind of switches have ROACH users out there used to connect up a
>>> bunch of boards? Are there switches out there to convert CX4 to
>>> something with a reach longer than the 15m Wikipedia quotes as the
>>> limit of CX4. 15m is very borderline for our needs.
>>>
>>> The prices seem to vary widely. We do not need network admin tools or
>>> anything fancy. In fact our data rates could probably go over 10Mb
>>> cabling, but the 10Gbe interface of the ROACH is more convenient from
>>> the firmware perspective. This is more of a multiplexer than a switch.
>>>
>>> Tom
>>>
>>>
>>
>>
>
>

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