A. Interface inbound-low handles Rx and Tx of low-priority control packet
B. Interface inbound-lo handles Rx and Tx of high-priority control packet
C. Interface inbound-low maps to internal interface eth3
D. Interface inbound-low maps to internal interface eth4

A. The fabric interconnect is in the end-host mode， and all uplink ports have failed.
B. The server port to which the adapter is pinned has failed.
C. A transient error has caused the link to fail.
D. The fabric interconnect is in the switch mode， and all uplink ports have failed.
E. The link for a network-facing host interface is missing.