Primary process is managed with pri command.
pri
Show forwarding statistics of each of ports.
spp > pri; status Physical Ports: ID rx tx tx_drop mac_addr 0 78932932 78932931 1 56:48:4f:53:54:00 Ring Ports: ID rx tx rx_drop tx_drop 0 89283 89283 0 0 1 9208 9203 0 5 ...
Clear statistics.
spp > pri; clear