Questions tagged “1g-in-10g-port”

2votes

1 answer

45views

1G SFP on Intel X710 (pfSense, ixl) fails with unqualified module until the optic is recoded as Intel

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!…

tx_hawk asked 3 days ago

3votes

1 answer

223views

Will a 10GbE SFP+ NIC accept a 1G single-mode SFP optic?

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…

1g-in-10g-port mellanox-connectx nic SFP+ single-mode

net_guru15 asked 12 days ago

6votes

2 answers

194views

Can a 10G SFP+ optic negotiate down to link with a 1G SFP at the far end?

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…

1g-in-10g-port autoneg Cisco SFP+ speed-mismatch

net_wizard14 asked 17 days ago