P4命令
simple_switch_CLI --thrift-port 9090
table_clear MyIngress.ipv4_lpm
table_add MyIngress.ipv4_lpm MyIngress.ipv4_forward 10.0.1.1/32 => 00:00:00:00:01:01 1
table_add MyIngress.ipv4_lpm MyIngress.ipv4_forward 10.0.2.2/32 => 00:00:00:02:02:00 2