Recent content by prdtabim

The Comm port is a serial RS232 used for local text console ( config using shell commands ).

The configurations with mlxconfig are persistent over resets and power cycles. I use HP connectx-3 pro in a 40Gb/s point to point between 2 linux machines using port 1 and 10Gb/s in port 2 with a CRS309 switch . No issues since fixed at ethernet mode in both machines.

That is a well know "bug". The problem is the VPI protocol trying to select between ethernet and infiniband ... Solution 01: just fix the protocol from auto to ethernet in the properties of the adapter in windows. Solution 02: fix the protocol to ethernet using mlxconfig Example: ( adjust the...

Looks odd since PCIe 1.1 and 2.0 use a 10/8 error coding and PCIe 3.0 use a 66/64.

33Gb/s in most tests. This is point to point using a QSFP+ AOC cable. Using QSFP to SFP+ adapter limits to 10Gb/s allowing to use my Mikrotik CRS309. Iperf3 shows 9.92 Gb/s using MTU 9000.

Using qsfp cable point to point 36-39Gb/s with mtu 9000 and max ring buffers ( in linux see ethtool -g )

PCIe 3.0 x4 have a little mess than 32Gb/s of bandwidth. In X570 systems you have a PCIe 4.0 x4 at last slot but the bandwidth is shared with the southbridge including various usb and the 2nd M.2. slot. I use connectx-3 in a X570 system ( Asrock X570 Creator ) in slot 1 sharing lanes with the...

I have one TL-SG3428X at my homelab. SFP+ RJ45 transceivers works ok at 10Gb/s but have problems in upload at 5 or 2.5Gb/s. The problem is mainly at the transceivers and the only that works 100% is based on Marvel Aquantia chipset. I tried various Mellanox DAC and Avago/Finisar AOC cables and...

Yes. That will upgrade the firmware. The 2.33.5100 is supported by mlxconfig.

There are a new 2.33.5100 at Supermicro website. Yet very old. https://www.supermicro.com/wdl/Firmware/InfiniBand/AOC-CIBF-m1/

Will show the configuration mlxconfig -d 02:00.0 q Will fix the port in ethernet mode ( look at the link ) mlxconfig -d 02:00.0 set LINK_TYPE_P1=2

If it's not a problem fix the card ports at ethernet mode ( not IB not VPI ) Using mlxconfig ( Using mlxconfig - MFT v4.11.0 - NVIDIA Networking Docs ) set LINK_TYPE_P1=2 so the port always will be ethernet not needed to be configured anymore . The fw is quite old. Maybe you need to update. The...

HP 764285-B21 - works perfectly. Using the last fw from HP website. Set PHY_TYPE_P1 and PHY_TYPE_P2 to 2 ( XFI mode ). Set FORCE_MODE_P1 and FORCE_MODE_P2 to 0 unless you will always use a 40Gb/s link. mlxconfig -d /dev/mst/mt4103_pci_cr0 q...

I only see 4-6 i225v3 embedded on appliance mainboards not in single pcie cards.

https://pt.aliexpress.com/item/1005004216189893.html?spm=a2g0o.productlist.0.0.3f84338atTYbdc&algo_pvid=54a01efd-dd1f-434d-8dd6-153b4e93aba4&algo_exp_id=54a01efd-dd1f-434d-8dd6-153b4e93aba4-5&pdp_ext_f=%7B%22sku_id%22%3A%2212000028410073121%22%7D&pdp_npi=2%40dis%21BRL%21%21273.18%21%21%21%21%21%4...