| 摘要 |
PROBLEM TO BE SOLVED: To shorten a switching time from an active line to a reserve line in a network where the reserve line is shared by a plurality of active lines.SOLUTION: A reserve line setting method includes: reserving a first reserve line corresponding to a first active line and a second reserve line corresponding to a second active line; setting a shared reserve line on a shared route in which the first reserve line and the second reserve line are double reserved, by setting a circuit of a node device provided on the shared route so as to transmit a data signal of the first active line or the second active line via the shared route; and setting a circuit of a branch node device provided in a branch node which guides the shared reserve line to a first node corresponding to the first reserve line and a second node corresponding to the second reserve line, so as not to guide the data signal which is transmitted via the shared reserve line, to the first node and the second node in the branch node. |
