40gbe

tl;dr - I'm trying to connect a ConnectX-4 MCX4131A-BCAT to a ConnectX-3 MCX354A at 40GbE. My Kaiam XQX2502's only seem to negotiate 1GbE. Is there a transceiver that will get me back to 40Gbps? Previously, I had two ConnectX-3 MCX354A's connected (Windows to Linux) with Kaiam XQX2502's linked...

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...

I just got these ConnectX-4 Lx in the mail, but not getting very far. I've been treating this like the ixgbe driver: I see Kernel driver in use: mlx5_core and am trying to create virtual functions in /etc/modprobe.d/mlx5_core.conf with some options like options mlx5_core num_vfs=12...

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...

Hi folks, I'm about to have my incoming WAN connection from my ISP upgraded to a 3Gb plan. The connection will be provided via SFP+ module into a router/switch of my choice My current plan is a 1Gb plan, coming in via SFP into a Ruckus ICX 7150 -> ESXi host -> pfSense The ESXi host specs are...

*** SOLD *** I have the following for sale as a bundle: 2x Molex 106410-1002 Fiber Optic Cable Assemblies QSFP AOC 40G 1.2, 2m 2x HP/Mellanox 649281-B21 ConnectX-3 VPI FDR IB Infiniband + 40GbE QSFP Adapter Cards. These cards are equivalent to Mellanox part number MCX354A-FCBT and have had...

Does anyone see any "gotchas" with the card below? Looks to be TCP/IP network interface cards, I was thinking these may be a good upgrade from my current 10gb direct connect networking. What do you all think...

Hello guys, sorry for my poor English. I just built a server with Xpenology(synology) on C612 motherboard, 40G nic, 2 x samsung PM1725a 6.4T nvme pcie ssd(2 x basic no raid) just in case some ppl don't know it yet: We now are able to use nvme ssd as storage in synology (by using mdadm in ssh)...

Hi all, n00by here... but this place has a wonderful amount of knowledge. I asked a similar question in the Mellanox forums here: https://community.mellanox.com/s/question/0D51T00007CGDzUSAX/which-cables-for-a-pair-of-mcx353afcbt I have two MCX353A-FCBT cards on the way and I want to connect...

This is not a humble brag post - I am genuinely curious if I am missing something. It's been a few weeks since I upgraded my home network to 40Gbps. So far it has been running smoothly and the upgrade process was pretty painless and significantly less expensive comparing to the 1Gbps to 10Gbps...

I did not have much experience with high speed networks beyond 10Gbps Ethernet and I was under the impression that any ConnectX-3 with QSFP ports was at least 40GbE capable. But after I finally got myself a 40/56GbE switch (Mellanox SX6012) I quickly found that it was not the case. A few of my...

Hello, I am upgrading my homeserver to a 3-node CEPH+Proxmox HA-VM Cluster. As 1GbE will probably be too slow for CEPH I am considering upgrading. 10GbE and 40GbE is not that big a price difference so I am thinking of going directly to 40GbE. I am situated in Europe. As my netorking...

Thank you for taking the time to read- I have a number of nodes that (I'm being told) now need to write to a NAS (that was designed for redundancy and capacity) at much faster speeds than operational. Currently a Windows box over a 40gbe Mellanox fibre card writes to the TrueNAS box (40gbe...

I have a few ConnectX-3 cards with dual QSFP+ ports on each and I'd like to have their capacity available for a local LAN party (36 total 1G ports required) without breaking the bank. The problem is the QSFP+ enabled switches common in the US are either much more expensive in the EU or just...

Hey all, I used the instructions to cross flash two HP Connextx-3 cards QSFP to Mellanox MCX354A-FCBT's. I then installed two Fiberstore (FS) QSFP-BD-40G modules into one card configured as dual Ethernet. No dice, the link won't come up and the lights on the card stay off. Things I have...

I want to connect my desktop, another workstation and NAS for faster file transfers for rather cheap (mainly video/photo content - 300-500GB transfers suck on 1GbE right now). I don't want to spend the $ on a switch yet because I'm on a rather tight budget, so it would be all directly connected...

Has anyone else bought Fiberstore Cat8 ethernet patch cable? I bought some recently as I was looking for some quality shielded cables in the 7-10ft range and their cat 8 cables were cheep. $3.50-$4.50. After checking these out today I noticed that these cables are 26 awg thick. Having felt some...

For a variety of reasons I can't go the same route I went at home. I've seen FS.com referenced here a couple of times, and I found one of their switches there that's within budget (3k). N5850-48S6Q . Has 6x 40gbe ports and 48 10gbe sfp+ ports. I need 5 40gbe ports and a smattering of sfp+...

Hi there all, I've just finished setting up a nice AIO proxmox server and between it and my workstation (direct connection), it saturates 10Gb or gives a faster then local SSD speed depending on work load (NFS maxes out at 4GB/s but thats a different thread)......and now I want more. Well not...

Unbelievable deal! These are low profile dual port cards capable of 56Gbps IB and 40Gbps Ethernet. I messaged the seller and bought 32 cards for $25 each plus shipping. He said he has 1300 in stock so there's plenty for everyone :) They can be flashed from their HP firmware to stock Mellanox...