I run a Turris Omnia NG at home and the last thing sitting on the metallic WAN port is a two metre hop to the ISP router. I would like to move that hop into the SFP+ cage and free the copper port for the lab side. The official Turris SFP+ copper module (RTROM01-RTSF-10G) costs about what a small…
Building a storage box at home and picked up a dual 10GbE Solarflare SFN7122F (SFC9120) because it was cheap. The card itself looks healthy, the system sees it and both ports enumerate, but not one of my existing multimode SFP+ modules will bring up a link in it. Solarflare SFN7122F, dual port…
We recode a small batch of modules for customer hosts most months, nothing exotic: read the original page, write the vendor string the host wants, put the module in the switch and move on. One module out of the current batch refuses every write while reading back perfectly, and before I bin it I…
We run packet capture on a handful of Napatech cards and I am putting together the optics order for the next rack. Before spending anything I want to understand what the qualified module list actually means in practice, because the wording leaves room for interpretation. Napatech NT40E3 and NT20E3…
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…
We are lighting a handful of channels over one metro pair with passive mux and demux at both ends, 100 GHz plan. Everything I can actually source is fixed-wavelength DWDM SFP+, a separate part number per channel, and keeping spares that way is getting silly. 10G aggregation at both ends, SFP+ cages…
New ESXi host going into a rack that hangs off a campus 3850. Management on copper came up without drama, the 10G uplinks did not: as soon as the server boots, the switch port drops into err-disable and the host sees nothing on that vmnic. Lenovo ThinkSystem SR650, 7X06CTO1WW, with an Emulex VFA5.2…
Home setup, and I am trying to get rid of the ISP router on a Cosmote GPON line. The idea is to run the fibre straight into the UDM-Pro and let the stick do the ONU job, but the provider only accepts the session if the 12-character serial and the device model string of the old CPE are presented, so…
Small tower site: an RB4011 in a ventilated roadside cabinet feeding a couple of radios, with one 10GBASE-T copper hop over to the switch because there was already cable in the duct. The port drops out on warm afternoons and comes back at night, which points fairly clearly at the module rather than…
We are adding a G610 to an existing fabric and there is a box of non-Brocade 16G/32G FC SFP+ left over from another build. Before I plan any ports around them I put one into a spare port on the bench to see what the switch makes of it. Brocade G610, Gen 6 third-party 32G FC SFP+, no Brocade…
Small office, one Firebox M470 on the perimeter, and I wanted to move the link to the core switch off copper and onto the built-in SFP+ ports. Bought a pair of generic SFP+ modules for it, one for each end. The switch side lights up straight away, the Firebox side never does. Kit: WatchGuard…
We run a handful of 80 km DWDM spans off EX4200s with third-party optics on both ends, because the vendor-branded DWDM parts were never going to fit the budget. That was fine for years. After the EX boxes were moved to Junos 12.3 the optics still sit in the same ports and the spans still exist, but…
We run a small regional network and pulled a spare 7050T out of stock to use as a DWDM aggregation box. Arista-coded DWDM optics for it quote close to the price of the switch, so we bought third-party DWDM SFP+ instead, and now the switch will not talk to them. Arista 7050T, EOS 4.10.6 generic…
I picked up a couple of second-hand Arista switches for the lab and ran straight into the optics gate. Arista-coded modules link up, passive DAC cables link up, and anything third-party leaves the port down. The lab side: DCS-7150S-24, bought used, no support contract and no account team behind me…
We push traffic from a lab server into a CRS518-16XS-2XQ over a 100G QSFP28 uplink, and it leaves the switch through a MikroTik S+RJ10 copper SFP+ into a plain 1G RJ45 host. The receiving side is missing a large share of the packets and I cannot pin it on anything obvious. Setup: MikroTik…
Homelab, nothing exotic. An Odroid H2 does routing duty on its 2.5GbE ports, and I wanted to hang it off one of the 10GbE SFP+ cages of the switch through an RJ45 copper module instead of pulling fibre across the room. QNAP QSW-M408S, copper module in one of the 10GbE SFP+ cages Odroid H2 router…
Small office, two buildings, and all I want is a plaain 1000M fibre link between the racks. Both ends are configured for 1000M, both stay dark, and this has been dragging on for weeks now. TP-Link TL-SG3452P, hardware V3, firmware 3.20.4, link taken from one of its SFP cages PLANET IGS-6329-8UP2S4…
Small vSphere cluster, two 10G uplinks per host into a pair of top-of-rack switches. After the ToR was rebooted for a firmware update, part of the VMs on one host went silent and vMotion failed on both uplinks - yet ESXi never marked anything down and the adapter LEDs stayed lit the whole time…
We keep a couple of ONIE boxes in the lab rack for testing, and one of them is an Edgecore AS5114-48X-O-AC-F-EC running dentOS. Port 18 is supposed to carry a 10G link to a neighbouring switch and it simply refuses to cmoe up, even though the platform clearly sees the module. Switch: Edgecore…
Small home rack, one server and one switch. I replaced an XGS1250-12 with an XS1930-10 and the only thing that did not survive the swap is the server uplink. Zyxel XS1930-10, SFP+ port with media type set to DAC10G Asus XG-C100F in the server 10Gtek CAB-10GSFP-P5M, 5 m passive twinax, AWG26 a…
Setting up 10G between a server and a TP-Link switch, nothing exotic. The card shows up in the system, driver loads normally, but there's no link on the port at all - no errors, no negotiation attempts. server: Intel X710, four 10GbE SFP+ ports, firmware 9.140.76856 TP-Link switch, SFP+ port cable…
We pulled a pair of G8124E out of a decommissioned rack and I am rebuilding them as the aggregation layer for an internal test environment. Budget for branded optics is zero, so everything goes in with generic 10G SR modules of the type we already run elsewhere. Lenovo RackSwitch G8124E, ex-IBM…
My firewall is a Supermicro E300-9A running pfSense Plus 22.05, and both 10G SFP+ ports refuse to come up. Neither ix2 nor ix3 ever shows carrier, whatever I put in the cage. Hardware: Supermicro E300-9A, pfSense Plus 22.05 Ubiquiti DAC-SFP10-0.5M and a 10Gtek passive twinax cable Supermicro…
I inherited a Sun Network 10GbE Switch 72p with a couple of legacy boxes hanging off it that will never do more than a gigabit. The plan was to drop a 1G capable module into one of the SFP+ cages and be done with it. Sun Network 10GbE Switch 72p, SEFOS CLI over the serial console x2129a dual-rate…
Two Flex System enclosures, each with an EN4093R 10Gb Scalable Switch (option 49Y4270) as the network module. Ports come back error-disabled after a chassis power event, and less often drop into the same state while everything is running. It is not always the same ports, which is what makes this so…
I look after a small office network, one switch closet, and the four SFP+ cages on our access switch carry the 10G links to the server rack. It ran for months without a thought and now one cage is simply gone. TP-Link TL-SG3428X-M2 (V1), firmware 1.20.4 Build 20241104 Rel.40746, adopted in Omada…
Moving a pair of hypervisors onto Fibre Channel storage, and one host refuses to present a single LUN while the very same hardware works when the card is handed to a VM. QLogic QLE2692, ISP2722-based 16/32Gb FC, both ports cabled Fujitsu Eternus DX100 S5 at the other end Proxmox VE 6.2 host…
We took over a small aggregation site and one of the 10G uplinks has not come up since the module in it was swapped. The module is listed as incompatible with the CRS226, so that is where suspicion landed first, but the readings do not look like a rejected module to me. MikroTik CRS226 at the…
We are consolidating a pair of R630s onto 10G and the cabling to the top of the rack is copper, so instead of pulling fibre I put 10GBASE-T SFP+ modules into the X520 cards. The switch end takes them without a word. The servers refuse to. Dell PowerEdge R630, Intel X520 (82599), dual port FS…
A customer saw errors on a fibre link and suspected a speed mismatch with a 1G far end. The poster asked whether 10G SFP+ transceivers are backward compatible with 1G, or whether the modules had to be swapped for 1G SFPs to talk to the gigabit device on the other side. Hardware involved: Aruba…
