A06B-6060-H007#H504
注意:
直通式的轉發(fā)速度大大快于存儲轉發(fā)模式,但可靠性要差一些,因為可
能轉發(fā)沖突 幀或帶CRC錯誤的幀。
生成樹協(xié)議
消除回路:
在由交換機構成的交換網絡中通常設計有冗余鏈路和設備。這種設計的
目的是防止一個點的失敗導致整個網絡功能的丟失。雖然冗余設計能夠
消除單點失敗的問題,但也導致了交換回路的產生,它會導致以下問題
。
·廣播風暴
·同一幀的多份拷貝
·不穩(wěn)定的MAC地址表
因此,在交換網絡中必須有一個機制來阻止回路,而生成樹協(xié)議(Spa
nning Tree Protocol)的作用正在于此。
A06B-6060-H007#H504
聯系人:郭先生
聯系電話:18971415643《優(yōu)先》
座機:027-83238871
傳真:207-61537051
QQ:810334512《優(yōu)先》
A06B-6060-H007#H504
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