How to disable the query of pibGetQsfp28CableType for fanout DAC

[yihuaxu]

1. status:
   10/16/2025 21:05:04.01 <Info:vlan.dbg.info> Media Q28+CR4_2m is inserted into Port 81
   <~snip~>
   10/14/2025 15:42:49.11 <Warn:HAL.Port.Warning> pibGetQsfp28CableType Could not determine copper DAC device type on port 81 using generic byte recognition (byte 113 0x00), defaulting to QSFP28->QSFP28 which may result in improper functionality
   <~snip~>

10/14/2025 15:36:00.86 <Erro:HAL.Port.ReadOpticDDMIDataFail> Reading of DDMI data failed on the optical module in port 81.

10/14/2025 15:36:00.86 <Erro:HAL.Port.Error> summitCardPortGetTransceiverInfoQSfp: DDMI info not supported on transceiver for port 1:81

HW information:
SERVER:
SWITCH: XTREME x870-32c

CABLE: QSFP-DD to 4xQSFP28  (Fanout Direct Attach Cable 2M)
      QSFP-DD inserts into our server for 400G port.
      4xQSFP28 ports will be inserted into xtreme switch and configure it as 1x100G.
configuration:
X870-32c.4 # show ports 81 information detail

Port:   81

        Virtual-router: VR-Default

        Type:           Q28+CR4_2m (Unsupported)

        Random Early drop:      Unsupported

        Admin state:    Enabled with  100G full-duplex

        Link State:     Ready

        Link Ups:       0        Last: --

        Link Downs:     0        Last: --

        VLAN cfg:

        STP cfg:

        Protocol:

        Trunking:       Load sharing is not enabled.

        EDP:            Enabled

        ELSM:           Disabled

        Ethernet OAM:           Disabled

        Learning:       Enabled

        Link-Flap Detection:    Disabled

        Unicast Flooding:       Enabled

        Multicast Flooding:     Enabled

        Broadcast Flooding:     Enabled

        Jumbo:          Disabled

        Flow Control:   Rx-Pause: Enabled       Tx-Pause: Disabled

        Priority Flow Control: Disabled

        Reflective Relay:       Disabled

        Link up/down SNMP trap filter setting:  Enabled

        Egress Port Rate:       No-limit

        Broadcast Rate:         No-limit

        Multicast Rate:         No-limit

        Unknown Dest Mac Rate:  No-limit

        QoS Profile:    None configured

        Ingress Rate Shaping :          Unsupported

        Ingress IPTOS Examination:      Disabled

        Ingress 802.1p Examination:     Enabled

        Ingress 802.1p Inner Exam:      Disabled

        Ingress 802.1p Priority:        0

        Egress IPTOS Replacement:       Disabled

        Egress 802.1p Replacement:      Disabled

        NetLogin:                       Disabled

        NetLogin port mode:             Port based VLANs

        Smart redundancy:               Enabled

        Software redundant port:        Disabled

        IPFIX:   Disabled               Metering:  Ingress, All Packets, All Traffic

                IPv4 Flow Key Mask:     SIP: 255.255.255.255            DIP: 255.255.255.255

                IPv6 Flow Key Mask:     SIP: ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff

                                        DIP: ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff

        Far-End-Fault-Indication:       Enabled

        Shared packet buffer:           default

        VMAN CEP egress filtering:      Disabled

        Isolation:                      Off

        PTP Configured:                 Disabled

        Time-Stamping Mode:             None

        Configured Port Partition:      1x100G

        Current Port Partition:         1x100G

        Available Port Partitions:      1x40G, 4x10G, 1x100G, 2x50G, 4x25G

        Dynamic VLAN Uplink:            Disabled

        VM Tracking Dynamic VLANs:      Disabled

[Chris_H]

It's not possible to disable such checks from the switch to the transceivers.

The reason you see them is that those are unsupported transceivers, and the switch doesn't recognize them.