Hi,
MSX6015T-1SFS
MSX6015T-1BRS
These two models can only do FDR10. Its a hardware limitation.
Normally there is a sticker on the switch with a part number and serial number.
Try this:
If you have a Mellanox OFED driver installed on you servers, MFT tools is probably installed.
1) From one of the nodes in the fabric (directly connected to this switch) , invoke: mst start, then mst ib add, then mst status.
If "mst start" is not recognized:
Download and install MFT (Mellanox Firmware Tool):
http://www.mellanox.com/content/pages.php?pg=management_tools&menu_section=34
Refer
to the User Manual for the installation instructions:
http://www.mellanox.com/pdf/MFT/MFT_user_manual.pdf
2) Invoke the following command:
flint -d <remote_switch_mst_device> q (the "remote switch mst device" string is listed in the output under "Inband Devices".
Example:[root@zahn11 ~]# flint -d /dev/mst/SW_MT48438_IS5030_lid-0x0008 q
You'll see a PSID identifier:
Example: PSID: MT_0D00110012
This PSID will tell us the system capabilities and we can trace it to a part #. You could probably just Google it and find a quick hit on a Mellanox page, or reply back to this post and I can check it for you.
I expect you'll determine the switch is in fact FDR10 only, limiting its max speed to 40G. It a bit better than QDR (also 40G) because it has an enhanced proprietary encoding scheme.