林作倉

Router-2(config)#username user2 password pass2

Router-2(config)#int s 1/0

Router-2(config-if)#ppp authentication pap

Router-2(config-if)#

%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/0, changed state to dow

建立帳號密碼

啟動pap驗證模式

啟動pap驗證模式之後可以發現line Protocol轉變

Router-1(config)#int s 1/0

Router-1(config-if)#ppp pap sent-username user2 password pass2

Router-1(config-if)#

%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/0, changed state to up

提出連線要求的帳號密碼

帳號密碼設定後如果通過驗證，將立即重新建立連線，Line Protocol狀態轉變為up