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Anonymous asked in 社會與文化語言 · 1 decade ago



If a node fails to repair a route (Phase III), it sends the

route’s packets to D using best-effort route. And, at the

same time it sends an error message to S. When S receives

an error message it re-establish a new route to D using the

algorithm outlined in the following section.

2.1. Algorithm

For each destination, D, the source node, S, maintains a

Source Update Sequence Number (SUSN). For each S, D

maintains a Destination Update Sequence Number (DUSN). The SUSN is used to distinguish between different route discovery requests. The DUSN is used to distinguish between different route reservation requests and to prevent loops from occurring in the network. The algorithm utilizes two main control packets: a

Route-Request Packet (RRP) and Route-Update Packet (RUP).

There are five main fields in RRP. The Destination field contains the address of the target of the route request (i.e., D). The Source Update Sequence Number (SUSN) field is used to distinguish between different route discovery requests. The sender of the route request initializes it and it is incremented each time a new route is requested. The Source to Destination Hop Count (SDHC)

field is used to measure the distance between the source and the destination. An intermediate node increments this field before rebroadcasting RRP. The Route Log field contains an ordered sequence of route records, one for each node traversed by RRP including one for the originating node. The QoS Metric field contains the traffic characteristics for the route that is being requested and a cleanup timeout interval.The RUP also contains five main fields. The Source field contains the address of the source route (i.e., S).

1 Answer

  • Anonymous
    1 decade ago
    Favorite Answer


    節點不能修理路(第III 階段),送

    D的route s 包使用最好努力的路線。 並且,在

    S 收到的它把一條錯誤訊息送到S.的相同的時間





    來源更新順序號(SUSN)。 對于每S,D來說

    主張到達站更新順序號(DUSN)。 SUSN用來釐清不同的路線發現請求。 DUSN用來釐清不同的路線預定請求並且防止環在網路裡發生。 算法利用兩主要操縱裝置包︰ a


    在RRP裡有5 個主要領域。 到達站字段包含路線的目標的位址請求(即,D)。 源頭更新順序號(SUSN)領域習慣于釐清不同路線發現請求。 路線的發送人請求初始化它並且一條新路線被請求每當的是incremented。 來源到到達站跳計數(SDHC)

    領域用來測量在來源和到達站之間的距離。 在重播RRP之前,一個中間節點增值這領域。 路線木材領域包含路線記錄,RRP(為起源的節點包括一)橫穿的每個節點一個的一個預訂的順序。 QoS 米製領域包含正被請求的路線和一個清除瀏覽程式的交通特性interval.The RUP也包含5 個主要領域。 來源領域包含源路由(即,S)的位址。

    Source(s): 翻譯機
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