The following example switches the active adapter to qfe1 from qfe0.
# pnmstat -l group adapters status fo_time act_adp nafo0 qfe0:qfe1 OK NEVER qfe0 # pnmset -c nafo0 -o switch qfe1 # pnmstat -l group adapters status fo_time act_adp nafo0 qfe0:qfe1 OK 11 qfe1 |