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Link down on 10/40 Gigabit Ethernet Controller XL710 QSFP+ using 40G copper cable

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Applies to

  • ONTAP 9.7 & 9.8
  • X91440A 2-port network adapter
  • X1144A 2-port network adapter
  • X1147A 4-port network adapter
  • 40G copper cable (vendor CISCO-CCX, part number QSFP-H40G-CU5M)
  • 40G copper cable (vendor CISCO-TRICENTRIC, part number QSFP-H40G-CU1M)

Issue

  • 40G copper cables in X91440A 2-port 40G NIC can fail suddenly or after reboot and may report:

netif.sfpNotSupported:error: The SFP+ or QSFP+ module ( ) installed in e4e is not supported with this network interface.

netif.sfpNotSupported:error: The SFP+ or QSFP+ module ( ) installed in e8e is not supported with this network interface.

  • If the affected port is a part of an ifgroup, the port does not participate in the ifgroup and the status shows as degraded:

[Node-3: intr: net.ifgrp.lacp.link.inactive:error]: ifgrp a0a, port e3a has transitioned to an inactive state. The interface group is in a degraded state.
[Node-3: vifmgr: vifmgr.portdown:notice]: A link down event was received on node Node-3, port e3a.

  • The port status is down and there is no carrier:

::> system node run -node <node> -command ifconfig -a

e4e: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500  options=6c07bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,VLAN_HWTSO,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
    ether 40:a6:XX:XX:XX:b0
    hwaddr 40:a6:XX:XX:XX:b0
    media: Ethernet autoselect (autoselect <full-duplex>)
    status: no carrier
    plugged: SFP/SFP+/SFP28 Unknown (Copper pigtail)

  • Reseating cable does not bring the link up, nor does bouncing the port on the switch side.
  • Connected switch (if Cisco Nexus) reports:

SWITCH1 %ETH_PORT_CHANNEL-5-FOP_CHANGED: port-channel1: first operational port changed from Ethernet1/2 to none
SWITCH1 %ETH_PORT_CHANNEL-5-PORT_DOWN: port-channel1: Ethernet1/2 is down
SWITCH1 %ETHPORT-3-IF_DOWN_LINK_FAILURE: Interface Ethernet1/2 is down (Link failure)

  • The connected switch port link status is notconnected as seen in show interface status
 

 

 

 

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