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astEthernet0/0, changed state to up %LINK5CHANGED: Interface FastEthernet0/, changed state to up %LINEPROTO5UPDOWN: Line protocol on Interface FastEthernet0/, changed state to up %LINK5CHANGED: Interface FastEthernet0/, changed state to up %LINEPROTO5UPDOWN: Line protocol on Interface FastEthernet0/, changed state to up Router(configif) Router(configif)exit Router(config)int fa0/1 Router(configif)ip add Router(configif)no shut%LINK5CHANGED: Interface FastEthernet0/1, changed state to up %LINEPROTO5UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up Router(configif) Router(configif)exit Router(config)好了現(xiàn)我們這些基本都已經(jīng)配置完成了。我們來看看我們的這個PDU如何來實現(xiàn)呢?在我們Cisco Packet Tracer的右下角有一個“Realtime(實時)”,我們點擊它后面的那個圖標(biāo)。 當(dāng)我們點擊后面那個圖標(biāo)以后我們會看見如下所示:這樣一個模擬窗口。我們現(xiàn)在從PC0 ping PC1來看看呢?看看我們的數(shù)據(jù)包如何走,經(jīng)過那些設(shè)備呢?在這里要注