Egypt joined 8 months ago
8 questions
10 comments
Telecom integrator from Alexandria. Mostly FS and generic modules.
On two sites a UNAS Pro (UniFi RJ45 SFP+ module) and a UNVR (UniFi fibre SFP+ module) dropped to 1G after every firmware update or power cycle; rebooting the device, the port or the switch did not help, only physically pulling and reinserting the module (or reseating the fibre) restored an…
A user with a MikroTik GPON ONU SFP module in a RouterBOARD facing a FiberLink OLT saw the interface as registered but the module serial never appeared in the OLT for provisioning. The thread turned into a reliability report: an operator lost every deployed MikroTik GPON module within two months of…
We took over a pair of ZS3-2 controllers together with the shelves behind them, and I am the one who has to order optics before they go back into service. The controller service manual is very short on this point: it lists the NIC and HBA options, and for the 10GbE SFP+ card it names exactly two…
A DS14-MK4 shelf came my way for almost nothing and I would like to hang it off an ordinary tower server as bulk storage at home. It is fully populated with its original carriers, it powers up, fans spin, front panel looks alive - but I cannot get a single disk to appear on the host. NetApp…
On a Minisforum MS-01 running Proxmox (i40e, kernel 6.8.12-10-pve) the X710 SFP+ port enp2s0f0np0 recogniesd a Ubiquiti SFP+-to-RJ45 module (ethtool listed 10G Base-SR capability) but the link never came up: Link detected: no, interface DOWN, no dmesg errors, ip link set up made no difference…
We are standing up four DGX Spark nodes for disttributed training and hung them off a MikroTik CRS812-8DS-2DQ-2DDQ. The plan was one 400G QSFP-DD port on the switch feeding two nodes at 200G each, so a couple of breakout cables cover the whole cluster. MikroTik CRS812-8DS-2DQ-2DDQ, QSFP-DD ports…
The poster wanted to dump the EEPROM of a QSFP+ transceiver plugged into an Intel XL710-QDA1 and ideally read live DDM values such as received optical power, as they were used to doing with SFP modules on other adatpers. With i40e 2.0.23 and firmware 5.05 0x800028a2 1.1568.0, ethtool -m eth0…
The poster (in a machine-translated post from the Spanish-language community) tried to connect two Cisco Business CBS350-24T-4X switches through their SFP+ ports using MikroTik XS+2733LC15D modules. No connectivity is established and the ports end up blocked by the switch's Link Flap Prevention…