QoS路由中链路状态更新机制的研究  

Research of link state updating mechanism in QoS-based routing

作　　者：余雪岗[1] 刘衍珩[1] 谢阿涟[1] 魏达[1] 

机构地区：[1]吉林大学计算机科学与技术学院,吉林长春130012

出　　处：《计算机应用》2006年第4期905-907,共3页journal of Computer Applications

基　　金：国家自然科学基金资助项目(60573128)

摘　　要：针对QOSPF中频繁洪泛而导致的通信开销过大问题,把组播有源树引入洪泛的链路状态更新中,利用链路状态更新中LSA的确认机制建立链路状态更新树,提出了FBLT方案和在部分链路失效情况下的IFBLT方案,并证明了FBLT和IFBLT方案相对于纯洪泛方式减少了链路状态更新造成的通信开销,在规模较大的网络中尤其明显。Aiming at reducing the huge link state updating communication overhead in QOSPF（ QoS-extended OSPF） due to frequent flooding, two new link state updating methods was put forward： FBLT（ Flooding Based Link State Updating Tree） and IFBLT（ Improved FBLT）, which could significantly reduce the communication overhead. The two methods were created by using the acknowledgement mechanism in LSA（ Link State Advertisement）. The effectiveness of the two methods was also proved through theoretic analysis and simulation with NS-2.

关 键 词：QOS路由 链路状态更新 链路状态通告 QoS扩展的开放最短路径优先 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]