Hi all.
After looking further into this, I think for our purposes the MSX1024 is
the way to go. It has 48 10 gbe ports with SFP+ that we can use with
optical transcievers. I don't think there's a 4-1 splitter cable with the
ability to use optical SFP+ transcievers, so we'll have to limit our
Or does someone know of a 40-10 optical cable?
Yes, and mellanox have them, including the fibre cable itself in short
distances. But it's only multi-mode (40GBASE-SR4 to 4x 10GBASE-SR) so
you're limited to ~100m or so. It uses an MTP connector on the 40G side,
and an LC connector on the 10G
Just be careful with the 1036 and breaking the 40g ports out to 10g. you can't
break out all the ports, and when you break one out, you sometimes lose another
40g port!
Jason Manley
CBF Manager
SKA-SA
Cell: +27 82 662 7726
Work: +27 21 506 7300
On 03 Sep 2014, at 15:07, John Ford
John - Mellanox hides this information in the back of their manuals in my
experience. Best to download.
L.
On 9/3/14, 9:11 AM, Jason Manley wrote:
Just be careful with the 1036 and breaking the 40g ports out to 10g. you can't
break out all the ports, and when you break one out, you
Just be careful with the 1036 and breaking the 40g ports out to 10g. you
can't break out all the ports, and when you break one out, you sometimes
lose another 40g port!
I just noticed that! It's true also with the 1024.
Jason Manley
CBF Manager
SKA-SA
Cell: +27 82 662 7726
Work: +27
Hi all. Has anyone tested the Mellanox SX-1024 series of switches with
ROACH-2 and 10 and/or 40 gb NICs?
These switches have 48 10 Gbe ports and 12 40 Gbe ports on them.
Thanks!
John
hi john,
jack hickish tested a mellanox SX1012
(12x40Gbe, or 48x10Gbe, or mixture),
when he was visiting berkeley.
the SX1012 worked beautifully on roach2, after jack upgraded
the switch firmware. and it's a great price. ($6K)
i think jason has also tested this switch.
best wishes,
dan
hi john,
jack hickish tested a mellanox SX1012
(12x40Gbe, or 48x10Gbe, or mixture),
when he was visiting berkeley.
the SX1012 worked beautifully on roach2, after jack upgraded
the switch firmware. and it's a great price. ($6K)
Yeah, we're looking at a 1024, or a 1036. They all use the
Hi John,
As Dan said I've tested (to some extent) the SX1012. I just used one
ROACH2 and corner
turned data through 8 x 10GbE ports. It worked well basically up to
line rate, with no CRC errors after a few hours of operation, but only
after
- Jason put me in touch with some Mellanox guys who
Hi John,
Email is passing in the ether.
I have eyed the SX1035 and SX1036
w/ upgrades in mind. What is your
understanding of the difference?
Lincoln
On 9/2/14, 11:54 AM, John Ford wrote:
hi john,
jack hickish tested a mellanox SX1012
(12x40Gbe, or 48x10Gbe, or mixture),
when he was
The SX1012 and SX1036 definitely use the same ASIC series and both suffer from
the PHY link problem. I've got seven of them here, and tested them with 20
different ROACH-2 boards. As Jack points out, some links are worse than others
and swapping cables and ROACH2 mezzanine cards often sorts the
hi jason,
thanks for all this info.
in the leda correlator,
the 10/40Gbe links are unidirectional,
roach2--switch and switch--gpuserver
so i don't think leda would encounter the
switch--roach2 bit errors,
although it wouldn't hurt to upgrade the firmware.
best wishes,
dan
On Tue, Sep
Not to steer this conversation too far off track, but does a patch
exist to enable the ethernet CRC check within the 10Gb yellow block?
When I tested the switch I used Dave MacMahon's CRC generator block,
but it would be nice if there was the option to have the 10 gig core
use the UDP crc -- or
Hi John,
Email is passing in the ether.
I have eyed the SX1035 and SX1036
w/ upgrades in mind. What is your
understanding of the difference?
I can't see any, really. The sx1035 has slightly lower latency, and is
way more expensive...
I don't really understand what L2 Lite Switching is,
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