addbr <bridge> add bridge delbr <bridge> delete bridge addif <bridge> <device> add interface to bridge delif <bridge> <device> delete interface from bridge setageing <bridge> <time> set ageing time setbridgeprio <bridge> <prio> set bridge priority setfd <bridge> <time> set bridge forward delay sethello <bridge> <time> set hello time setmaxage <bridge> <time> set max message age sethashel <bridge> <int> set hash elasticity sethashmax <bridge> <int> set hash max setmclmc <bridge> <int> set multicast last member count setmcrouter <bridge> <int> set multicast router setmcsnoop <bridge> <int> set multicast snooping setmcsqc <bridge> <int> set multicast startup query count setmclmi <bridge> <time> set multicast last member interval setmcmi <bridge> <time> set multicast membership interval setmcqpi <bridge> <time> set multicast querier interval setmcqi <bridge> <time> set multicast query interval setmcqri <bridge> <time> set multicast query response interval setmcqri <bridge> <time> set multicast startup query interval setpathcost <bridge> <port> <cost> set path cost setportprio <bridge> <port> <prio> set port priority setportmcrouter <bridge> <port> <int> set port multicast router show [ <bridge> ] show a list of bridges showmacs <bridge> show a list of mac addrs showstp <bridge> show bridge stp info stp <bridge> {on|off} turn stp on/off
Spanning Tree Protocol (STP) 生成树协议，是一个作用在OSI网络模型中第二层的通信协议。基本应用是防止交换机冗余链路产生的环路，用于确保以太网中无环路的逻辑拓扑结构，从而避免广播风暴大量占用交换机的资源。
