Sorry, not enough coffee. Beyond what we are going to be able to answer via
email, mainly because of all the design details, etc.
Todd Fujinaka
Software Application Engineer
Data Center Group
Intel Corporation
todd.fujin...@intel.com
-----Original Message-----
From: Fujinaka, Todd <todd.fujin...@intel.com>
Sent: Thursday, June 18, 2020 9:38 AM
To: John H <5snkaz3...@snkmail.com>; E1000-devel@lists.sourceforge.net
Subject: Re: [E1000-devel] ixgbe for 10 GbE SFP+ without CS4227 phy
Can you file a bug directly through your factory rep? I think this is beyond
what we're going to answer via email.
Todd Fujinaka
Software Application Engineer
Data Center Group
Intel Corporation
todd.fujin...@intel.com
-----Original Message-----
From: John H <5snkaz3...@snkmail.com>
Sent: Wednesday, June 17, 2020 2:39 PM
To: E1000-devel@lists.sourceforge.net
Subject: [E1000-devel] ixgbe for 10 GbE SFP+ without CS4227 phy
Can the ixgbe driver be used without a CS4227 PHY between the NIC (X552 in this
case) and the SFP+? Do you have to configure anything (driver settings, EEPROM
firmware) to support that?
I do see a CS4227 error message from the driver, but it's not clear if that is
fatal:
Jun 17 21:36:26 localhost kernel: ixgbe 0000:04:00.0: eth10: CS4227 reset
failed: -18 Jun 17 21:36:26 localhost kernel: ixgbe 0000:04:00.0: registered
PHC device on eth10 Jun 17 21:36:26 localhost kernel: ADDRCONF(NETDEV_UP):
eth10: link is not ready Jun 17 21:36:26 localhost kernel: ixgbe 0000:04:00.0:
eth10: detected SFP+: 5
However, I am not seeing link (NO-CARRIER).
Here is 'ethtool -m', so it's talking to the SFP+ okay.
$ sudo ethtool -m eth10
Identifier : 0x03 (SFP)
Extended identifier : 0x04 (GBIC/SFP defined by 2-wire interface ID)
Connector : 0x07 (LC)
Transceiver codes : 0x10 0x00 0x000x00 0x00 0x00 0x00 0x00
: => 10G Ethernet: 10G Base-SR
Encoding : 0x06 (64B/66B)
BR, Nominal : 10300MBd
Rate identifier : 0x00 (unspecified)
Length (SMF,km) : 0km
Length (SMF) : 0m
Length (50um) : 80m
Length (62.5um) : 20m
Length (Copper) : 0m
Length (OM3) : 300m
Laser wavelength : 850nm
Vendor name : CISCO-INTEGRA
Vendor OUI : c8:de:51
Vendor PN : SFP-10G-SR-S-IO
Vendor rev : 01
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To learn more about Intel Ethernet, visit
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To learn more about Intel Ethernet, visit
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