A.根據(jù)接收到的以太網(wǎng)幀的源MAC地址和VLAN ID信息添加或刷新MAC地址表項(xiàng)
B.根據(jù)目的MAC地址查找MAC地址表,如果沒(méi)有找到匹配項(xiàng),那么在報(bào)文對(duì)應(yīng)的VLAN內(nèi)廣播
C.如果找到匹配項(xiàng),但是表項(xiàng)對(duì)應(yīng)的端口并不屬于報(bào)文對(duì)應(yīng)的VLAN,那么丟棄該幀
D.如果找到匹配項(xiàng),且表項(xiàng)對(duì)應(yīng)的端口屬于報(bào)文對(duì)應(yīng)的VLAN,那么將報(bào)文轉(zhuǎn)發(fā)到該端口,但是如果表項(xiàng)對(duì)應(yīng)端口與收到以太網(wǎng)幀的端口相同,則丟棄該幀