What does the status appear in Bond interface mean?

Portx(ACT,SYN)
ACT = port/link is active
SYN = the port is in synchronize with the switch
***
bond1(bond1): flags=8843<UP,BROADCAST,RUNNING,SIMPLEX> mtu 1500
        inet 10.212.196.75 netmask 0xffffff00 broadcast 10.212.196.255
        ether 00:30:48:95:18:04
        status: active
        Bond Interface: port1(ACT,SYN) primary, port2(ACT,SYN) primary
        webwall status: OFF ~~~~~~~~~               ~~~~~~~~~
        packet drop(output error): 0
        packet drop(not permit): 0
                tcp 0 udp 0 icmp 0
        packet drop(deny): 0
                tcp 0 udp 0 icmp 0