Contradicting MikroTik's documented advice to force 1G full duplex when using 1G optics in SFP+ ports, a Netpower Lite 7R linked to an RBFTC11 only with auto-negotiation (forced 1G gave link up but zero received packets), while the same Netpower to a CRS328-4C-20S-4S+ had heavy packet loss and FCS…
A MikroTik CCR1036-8G-2S+ with S-31DLC20D 1.25G single-mode SFPs reported link OK but no traffic flowed; TX power was blank and RX was -9 dBm. The identical module on the same fibre worked in a CCR1036-12G-4S. Port disable/enable, forcing 1G full duplex on both ends and support tickets did not…
On a Protectli Vault 6 with Intel X710 SFP+ ports (ixl0/ixl1) a 1G EZConn ETB43315-7S34-FR SFP showed no carrier. Logs contained Invalid advertised speed; valid flags are: 0x06, ixl1setlink: Error getting phy capabilities -37, aq error: 8 and Link failed because an unqualified module was detected!…
Home setup. The fibre handoff from my provider is a 1G BiDi module and I would like it in the firewall itself instead of kepeing a switch in front of the box just to convert media. Protectli Vault 6 running pfSense, X710 ports, ixl driver the provider-supplied 1G BiDi module, an EZConn…
The poster was building a server that needed a 1 Gbps single-mode fibre uplink and wanted a PCIe card with two to four SFP cages so any optic could be used later. The core doubt: switches usually accept plain 1G SFP optics in SFP+ ports, but is the same true for 10GbE server NICs, or would the NIC…
The poster asked whether a 10G SFP+ SR or LR optic in one switch can auto-negotiate down to 1G to link over fiber with a 1G SFP in another switch, and if not, how to attach a handful of 1G optical connections from a 1G switch to a 10G switch. They understood that Cisco SFP+ optics run only at 10G…
