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Subject: Re: [Intel-wired-lan] ice: E810-XXV: Dell GBIC S28-10G-25G-SR-85C does not work X-BeenThere: intel-wired-lan@osuosl.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-wired-lan-bounces@osuosl.org Sender: "Intel-wired-lan" On 2/17/2026 9:15 AM, Paul Menzel wrote: Hi Paul, I spoke to one of our link people about this. > It works with Broadcom network controller BCM57414: > >     $ lspci -nn -s c4:00 >     c4:00.0 Ethernet controller [0200]: Broadcom Inc. and subsidiaries > BCM57414 NetXtreme-E 10Gb/25Gb RDMA Ethernet Controller [14e4:16d7] (rev > 01) >     c4:00.1 Ethernet controller [0200]: Broadcom Inc. and subsidiaries > BCM57414 NetXtreme-E 10Gb/25Gb RDMA Ethernet Controller [14e4:16d7] (rev > 01) > > The difference seems to be that the Broadcom device supports auto- > negotiation, and the Intel device does not: Strictly speaking, optical links do not provide auto-negotiation. > > Intel E810-XXV: > >     Supported ports: [ FIBRE ] >     Supported link modes:   1000baseT/Full >                             10000baseT/Full >                             25000baseCR/Full >                             25000baseSR/Full >                             1000baseX/Full >                             10000baseCR/Full >                             10000baseSR/Full >                             10000baseLR/Full >     Supported pause frame use: Symmetric >     Supports auto-negotiation: No >     Supported FEC modes: None >     Advertised link modes:  25000baseSR/Full The important part is here 10G is not an advertised link mode... >     Advertised pause frame use: No >     Advertised auto-negotiation: No >     Advertised FEC modes: None >     Speed: Unknown! >     Duplex: Unknown! (255) >     Auto-negotiation: off >     Port: FIBRE >     PHYAD: 0 >     Transceiver: internal >     Supports Wake-on: d >     Wake-on: d >         Current message level: 0x00000007 (7) >                                drv probe link >     Link detected: no > > Broadcom BCM57414 NetXtreme-E: > >     Supported ports: [ FIBRE ] >     Supported link modes:   25000baseSR/Full >                             10000baseSR/Full >     Supported pause frame use: Symmetric Receive-only >     Supports auto-negotiation: Yes >     Supported FEC modes: RS     BASER >     Advertised link modes:  25000baseSR/Full >                             10000baseSR/Full ... where it is here. >     Advertised pause frame use: No >     Advertised auto-negotiation: Yes >     Advertised FEC modes: Not reported >     Speed: Unknown! >     Duplex: Unknown! (255) >     Auto-negotiation: on >     Port: FIBRE >     PHYAD: 1 >     Transceiver: internal >     Supports Wake-on: g >     Wake-on: d >         Current message level: 0x00002081 (8321) >                                drv tx_err hw >     Link detected: no > > > Kind regards, > > Paul > > >> PS: >> >> ``` >> $ ip link show net04 >> 7: net04: mtu 1500 qdisc mq >> switchid b48351ffff278d44 state DOWN mode DEFAULT group default qlen 1000 >>      link/ether b4:83:51:27:8d:44 brd ff:ff:ff:ff:ff:ff >>      alias eth4 >> $ sudo ethtool -m net04 >>      Identifier                                : 0x03 (SFP) >>      Extended identifier                       : 0x04 (GBIC/SFP >> defined by 2-wire interface ID) >>      Connector                                 : 0x07 (LC) >>      Transceiver codes                         : 0x00 0x00 0x00 0x00 >> 0x00 0x00 0x00 0x00 0x02 0x10 would be here for advertised 10G support. It is not, which is why it's not being advertised. He mentioned it's very common for dual rates to claim it on paper but not advertise it properly. Could you provide the output for 'ethool -m hex on'? Thanks, Tony