These ports are not ACTIVE on LAGG interface lagg0: bxe2, bxe3

[mgchristensen]

Having read the threads here (https://www.truenas.com/community/threads/ports-are-not-active-on-lagg.69460/, from 2018, and FreeNAS 11)
and here (https://www.truenas.com/community/threads/locking-interface-media-subtype-to-10000mb-s.99452/, but this thread only applies to TrueNAS Scale as ethtool is not installed in TrueNAS core) I am at a loss how to fix this.

Admittedly a long-winded post, conclusion at the end for those who wish to avoid the tedium.

Periodically, I get this critical alert:

CRITICAL​

These ports are not ACTIVE on LAGG interface lagg0:​

bxe2, bxe3. Please check cabling and switch.​

2023-02-28 11:19:18

I have rechecked the cables and the settings on the switch and they are correct.
TrueNAS Core, version TrueNAS-13.0-U4.
Dell R720 with four port NIC
Network / Interfaces shows, for lagg0:

Description: lagg0​

Active Media Type: N/A​

Active Media Subtype: N/A​

VLAN Tag: N/A​

VLAN Parent Interface: N/A​

Bridge Members: N/A​

LAGG Ports: bxe0,bxe1,bxe2,bxe3​

LAGG Protocol: LACP​

MAC Address: xx:xx:xx:xx:xx:ab​

MTU: N/A​

and for the four physical NICs:
bxe0:

Description: member of lagg0​

Active Media Type: Ethernet​

Active Media Subtype: 10Gbase-T​

VLAN Tag: N/A​

VLAN Parent Interface: N/A​

Bridge Members: N/A​

LAGG Ports: N/A​

LAGG Protocol: N/A​

MAC Address: xx:xx:xx:xx:xx:ab​

MTU: N/A​

bxe1:

Description: member of lagg0​

Active Media Type: Ethernet​

Active Media Subtype: 10Gbase-T​

VLAN Tag: N/A​

VLAN Parent Interface: N/A​

Bridge Members: N/A​

LAGG Ports: N/A​

LAGG Protocol: N/A​

MAC Address: xx:xx:xx:xx:xx:ab​

MTU: N/A​

bxe2:

Description: member of lagg0​

Active Media Type: Ethernet​

Active Media Subtype: 1000baseT​

VLAN Tag: N/A​

VLAN Parent Interface: N/A​

Bridge Members: N/A​

LAGG Ports: N/A​

LAGG Protocol: N/A​

MAC Address: xx:xx:xx:xx:xx:ab​

MTU: N/A​

bxe3:

Description: member of lagg0​

Active Media Type: Ethernet​

Active Media Subtype: 1000baseT​

VLAN Tag: N/A​

VLAN Parent Interface: N/A​

Bridge Members: N/A​

LAGG Ports: N/A​

LAGG Protocol: N/A​

MAC Address: xx:xx:xx:xx:xx:ab​

MTU: N/A​

Thus: bxe0 and bxe1 show Active Media Subtype as 10GB but bxe2 and bxe3 show Active Media Subtype as 1000baseT
There is a note attached to Network / Interfaces / Settings "Lagg Interfaces*" that reads:
Help: Lagg Interfaces
Select the interfaces to use in the aggregation.
Warning: Lagg creation fails if any of the selected interfaces
have been manually configured.

Does this warning rule out the above referenced solution that suposedly worked for TrueNAS Scale?

Additional info is shown by ifconfig when I ssh into the box:
The four physical interfaces are identical except for the hwaddr AND bxe0, bxe1 show
media: Ethernet autoselect (10Gbase-T <full-duplex>)
but bxe2, bxe3 show
media: Ethernet autoselect (1000baseT <full-duplex>)

The lagg0 interface shows:
laggport: bxe0 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING>
laggport: bxe1 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING>
laggport: bxe2 flags=0<>
laggport: bxe3 flags=0<>
Thus ifconfig shows a problem that is not evident in the TrueNAS Core gui.

I suspect that if I could somehow lock bxe0 and bxe1 to media: Ethernet autoselect (1000baseT <full-duplex>) this would solve the problem, except for the warning noted above. This is not an issue on a Dell R710 with a near identical setup. I do not have any 10GB switches on my network.

Thank you in advance to any who provide feedback.