SFP Cat6 insert not recognized (I think)

fmc-ieee-org

This is an SFP 10 Gbps insert bought from Netgate. ifconfig says no carrier but switch it is connected to shows loop lights. It's a DHCP port and there's a known working DHCP on the segment. I have diabled IPv6 since there's no v6 DHCP service.

I expected that bouncing the port would cause it to request an address, etc. and show as functional in the pfsense GUI.

No dice. What am i missing?

fmc-ieee-org

Looks like this:

ix0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
description: i3_fiber_2Gbps
options=4e138bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,WOL_UCAST,WOL_MCAST,WOL_MAGIC,VLAN_HWFILTER,RXCSUM_IPV6,TXCSUM_IPV6,HWSTATS,MEXTPG>
ether 90:ec:77:96:7d:ea
inet6 fe80::92ec:77ff:fe96:7dea%ix0 prefixlen 64 scopeid 0x5
media: Ethernet autoselect
status: no carrier
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>

fmc-ieee-org

OS sees the SFP insert, just doesn't set it up apparently

ix0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
description: i3_fiber_2Gbps
options=4e138bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,WOL_UCAST,WOL_MCAST,WOL_MAGIC,VLAN_HWFILTER,RXCSUM_IPV6,TXCSUM_IPV6,HWSTATS,MEXTPG>
capabilities=4f53fbb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,WOL_UCAST,WOL_MCAST,WOL_MAGIC,VLAN_HWFILTER,VLAN_HWTSO,NETMAP,RXCSUM_IPV6,TXCSUM_IPV6,HWSTATS,MEXTPG>
ether 90:ec:77:96:7d:ea
inet6 fe80::92ec:77ff:fe96:7dea%ix0 prefixlen 64 scopeid 0x5
media: Ethernet autoselect
status: no carrier
supported media:
media autoselect
media 10Gbase-SR
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
drivername: ix0
plugged: SFP/SFP+/SFP28 10G Base-SR (LC)
vendor: OEM PN: SFP-10G-T SN: CSY102PC7302 DATE: 2025-12-23
module temperature: 40.67 C voltage: 3.34 Volts
lane 1: RX power: 0.00 mW (-inf dBm) TX bias: 6.00 mA

SFF8472 DUMP (0xA0 0..127 range):
 03 04 07 10 00 00 00 00 00 00 00 06 67 00 00 00
 08 02 00 1e 4f 45 4d 20 20 20 20 20 20 20 20 20
 20 20 20 20 00 00 90 65 53 46 50 2d 31 30 47 2d
 54 20 20 20 20 20 20 20 30 32 20 20 03 52 00 3f
 00 1a 00 00 43 53 59 31 30 32 50 43 37 33 30 32
 20 20 20 20 32 35 31 32 32 33 20 20 68 80 03 d5
 00 00 11 ef 61 ea 4e 38 9e 78 18 50 a4 d5 fd 23
 e0 ee b8 00 00 00 00 00 00 00 00 00 6a 9f 5e 45

Execute Shell Command

stephenw10

@fmc-ieee-org said in SFP Cat6 insert not recognized (I think):

lane 1: RX power: 0.00 mW (-inf dBm) TX bias: 6.00 mA

Looks like it's not seeing any input signal on the fiber.

fmc-ieee-org

@stephenw10 It's a wired ethernet SFP.

stephenw10

Hmm, then it's not correctly recognising the module. What is it connected to? I would only expect that to possibly work at 10G.

fmc-ieee-org

@stephenw10 It should rate negotiate anywhere from 1Gbps to 10Gbps according to the literature.

stephenw10

The manual for the module? It won't do that in a 6100 because the lines to read/set the link rate don't exist in C3K SoCs.

fmc-ieee-org

@stephenw10 So how can they be added to enable rate negotiation?

stephenw10

It cannot on those CPUs. It's a limitation of the SoC as noted by Intel:
https://docs.netgate.com/pfsense/en/latest/solutions/netgate-6100/io-ports.html#sfp-ethernet-ports

If the module defaults to the required rate it can work which is why some module do even though we don't officially support it.

I assume you're trying to have it link at 1G and it's failing to link at 10G?