NETWORK DESIGN APPARATUS AND NETWORK DESIGN METHOD

摘要

A network design apparatus includes: a first processing unit configured to select one or more paths between nodes in response to a request for a bandwidth between pairs of nodes in a network to determine working communication routes and protecting communication routes connecting the pairs of nodes, and estimate a number of communication lines in the selected path; and a second processing unit configured to allocate logical channels of the communication lines to the working communication routes and the protecting communication routes based on the requested bandwidth, wherein the first processing unit determines the protecting communication routes while permitting the sharing of the path, and the second processing unit allocates a common logical channel to one or more communication routes, out of the protecting communication routes, that share the path and are not simultaneously used when a failure occurs in the working communication routes.

主权项

1. A network design apparatus comprising:
a first processing unit configured to select one or more paths in response to a request for a bandwidth to determine working communication routes and protecting communication routes connecting pairs of nodes in a network, and estimate a number of communication lines established in each of the one or more paths selected, the one or more paths being configured between nodes in the network, the bandwidth being to be used for communications between the pairs of nodes; and a second processing unit configured to allocate logical channels to the working communication routes and the protecting communication routes based on the requested bandwidth, the logical channels being included in each of the communication lines, wherein the first processing unit determines the protecting communication routes while permitting the protecting communication routes to share the one or more paths, and the second processing unit allocates a common logical channel out of the logical channels to one or more communication routes out of the protecting communication routes, the one or more communication routes sharing the one or more paths and being not simultaneously used when a failure occurs in at least one of the working communication routes.