I use a 10Gtek 1 (1.25?) Gb RJ45 to SFP+ transceiver (from amazon) and a SFP+ to QSFP+ adapter (ebay listing title was HP MELLANOX 655902-001 655874-B21 QSFP/SFP ADAPTER) to connect my LAN switches (going through one unifi switch flex mini powered on USB-C to reach my router) to my SX6036.
I...
While trying to cross flash my CX354A I think I disabled the second port on the card by flashing the single port firmware. When I run '/opt/mellanox/bin/mlxfwmanager' on my esxi server I only get 'Device #1' and before the flash, on the original FW, I got Device #1 and #2'.
Any suggestions on...
Hey,
I've never worked with any QSFP+ switches before, but it seems like some fairly decent ones are starting to get pretty affordable on eBay.
There's the Mellanox stuff that can be had super cheap, but a lot of the pitfalls I've seen described on this forum make me apprehensive.
I came...
As posted in the title I'm looking for gear to convert my home network to 40gbit. Main purpose is sharing storage over rdma, my internet connection is only 100mbit, so ipoib seems like it would be fine for that. Even the second line I'm considering would keep the combined bandwidth at max...
I have a little issue while testing InfiniBand connections. While system (Bios-wise) is set to performance and the CPU governance is set to performance, I still receive the message/alert/warning of CPU frequency mismatches. Both CPU's are E5-2673v3's. The cards are old 10EUR eBay findings of SUN...
From it's specifications it looks like the dual qsfp connectx-3 has 3W qsfp support including LR4. From the firmware release notes 40gb support:
QSFP-40G-SR-BD
MC2210511-LR4
Some internet posts of ethtool run on this show supported link types of 40000baseLR4/Full. 56 GbE over a ConnectX-3 VPI...
My lab is 5x Windows Server 2016. I purchased 5x ConnectX2 and an IS-5022.
I have 5x SFP+ to SFP+ Passive copper cables - 2m long.
The IS-5022 has 8 QSFP ports (female). The ConnectX2 cards have SFP+ ports I believe, but documentation seems really difficult to get (these are HP Mellanox...
Is there a difference in physical form between QSFP+ connectors and QSFP connector ? Will a QSFP+ cable be able to be connected to a QSFP port, and will a QSFP cable be able to be connected to a QSFP+ port ?
Hi fellows,
Are all Infiniband CX4 cables work the same (support both 10Gb SDR and 20Gb DDR rate)?
Or actually there are some kind of standards only some CX4 cables can do 20Gb DDR?
Same question goes for 40Gb QDR and 56Gb FDR QSFP cables.
I can get some 4x16bit QSFP transceivers for free, however from my understanding these are originally intended for FC. Does the link protocol really matter? Isn't it just a physical conversion layer and as long as the transfer bitrate keeps up I could use these for QDR Infiniband or do I really...
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