| 摘要 |
A communication apparatus, in a communication network in which a plurality of routes can be set with respect to a destination, acquires a line condition of a communication line in each route, calculates a communication cost of each route, based on the line condition of the communication line in the route, and selects a route from the plurality of routes based on the communication cost calculated. The line condition is acquired at regular intervals to thereby update the communication cost.
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