| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To execute a link lookahead operation, an automatic cache update operation and a cache cooperation operation at a higher probability than in the related art, without deteriorating a congestion state of a network, and to increase an efficiency of a cache server. <P>SOLUTION: Based on QoS route information which is obtained by a QoS route information obtaining part 102, and contains route information of the network and load information on a route, a route computation part 108 computes a route suitable for performing an automatic cache update operation, a link lookahead operation or a cache server cooperation operation, and an automatic cache update part 105, a link lookahead control part 104 and a cache server cooperation part 107 make use of the route for performing the automatic cache update operation, the link lookahead operation or the cache server cooperation operation. Here, the route computation part 108 computes, for instance, a maximum residual bandwidth path as the route. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
