CONTAP-299043: During controller upgrade, e0a or e0b cluster ports on old node do not link up when connected to cluster ports on new node
Issue
During a controller upgrade in a two-node switchless cluster, 10GbE e0a or e0b cluster ports on FAS2720, FAS2750, AFF A220 or AFF A150 nodes might not link up when connected to 10/25GbE ports on newer AFF A20, AFF A30, AFF A50 or FAS50 nodes.