| 摘要 |
PROBLEM TO BE SOLVED: To keep minimum-required communication even if irregularities to a communication apparatus are detected, and to prevent damage from spreading to a wide range.SOLUTION: A communication apparatus 102 comprises: irregularity detection means 10d for detecting irregularities to a communication apparatus; a storage unit 14 for storing, as a change hop number 14b, the number of hops smaller than a normal number of hops 14a during normal communication; and TTL change means 10c for changing the number of hops of a communication packet transmitted after the irregularity detection means 10d has detected irregularities to the communication apparatus from the normal number of hops 14a to the change hop number 14b.SELECTED DRAWING: Figure 2 |
