On Mon, Feb 03, 2025 at 04:05:34PM +0100, Julian Huhn wrote:
>On Mon, Feb 03, 2025 at 02:33:59PM +0000, Stuart Henderson wrote:
>>On 2025-02-03, Julian Huhn <julian@huhn.dev> wrote:
>>>Moin!
>>>
>>>I'm trying to connect to an Internet exchange with a bnxt(4) interface, but I
>>>only get 10GbaseSR as the media type, not 10GbaseLR as expected. When I try to
>>>set the media type manually, it fails with an "Invalid argument". In fact,
>>>10GbaseLR isn't listed as a supported media type for the interface. Is this
>>>correct? Is SR the only supported mode on this type of network card?
>>
>>You can't switch between SR and LR in software, it's dependent on
>>the transceiver.
>
>Ok, but the transceiver is LR as far as I can see, so it was
>misidentified by bnxt(4), right?
>
>>Is it working OK anyway? (i.e. is this just a cosmetic issue?)
>
>Unfortunately, I cannot establish connectivity with the interface. However,
>both sides claim that the interfaces are active.
Perhaps the transceiver is to blame. On Linux (Debian), a similar behavior can
be observed. So this is not specific to OpenBSD. I shut down the VM and looked
at the active, passed-through interface on the host, which also showed that only
SR is supported. However, Linux advertises all expected media types on the
inactive interface.
--Huhn
On Linux:
# ethtool enp1s0f0np0
Settings for enp1s0f0np0:
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
Advertised pause frame use: Symmetric
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Speed: 10000Mb/s
Lanes: 1
Duplex: Full
Auto-negotiation: on
Port: FIBRE
PHYAD: 1
Transceiver: internal
Supports Wake-on: d
Wake-on: d
Current message level: 0x00002081 (8321)
drv tx_err hw
Link detected: no
# ethtool enp1s0f1np1
Settings for enp1s0f1np1:
Supported ports: [ FIBRE ]
Supported link modes: 1000baseT/Full
10000baseT/Full
1000baseKX/Full
10000baseKX4/Full
10000baseKR/Full
25000baseCR/Full
25000baseKR/Full
25000baseSR/Full
1000baseX/Full
10000baseCR/Full
10000baseSR/Full
10000baseLR/Full
Supported pause frame use: Symmetric Receive-only
Supports auto-negotiation: Yes
Supported FEC modes: RS BASER
Advertised link modes: 1000baseT/Full
10000baseT/Full
1000baseKX/Full
10000baseKX4/Full
10000baseKR/Full
25000baseCR/Full
25000baseKR/Full
25000baseSR/Full
1000baseX/Full
10000baseCR/Full
10000baseSR/Full
10000baseLR/Full
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: d
Wake-on: d
Current message level: 0x00002081 (8321)
drv tx_err hw
Link detected: no
On OpenBSD:
# ifconfig bnxt0 media
bnxt0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
lladdr 6c:92:cf:12:94:e0
index 1 priority 0 llprio 3
media: Ethernet autoselect (10GbaseSR full-duplex)
status: active
supported media:
media 1000baseSX
media 10GbaseSR
media 25GbaseSR
media autoselect
# ifconfig bnxt1 media
bnxt1: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
lladdr 6c:92:cf:12:94:e1
index 2 priority 0 llprio 3
media: Ethernet autoselect
status: no carrier
supported media:
media 1000baseT
media 10GSFP+Cu
media autoselect
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