Abstract: When a subscriber terminal (100A) connects to the other party vCPE (310B), a communication system (1) determines whether a connection between the other party terminal (100B) and the other party vCPE (310B) and a connection between the subscriber terminal (100A) and the other party vCPE (310B) are to be established through the same network segment based on connection permission conditions of the other party vCPE (310B) and the subscriber terminal (100A), and the other party vCPE (310B) allocates a network segment, which is the same as or different from a network segment allocated to the other party terminal (100B), to the subscriber terminal (100A) according to the determination.

Abstract: In a communication system including a first virtual CPE to which a terminal belongs, a second virtual CPE, and an authentication server, when the terminal connects to the second virtual CPE, the second virtual CPE confirms whether terminal information of the terminal is registered in the authentication server, and when the terminal information is registered in the authentication server, the authentication server notifies the second virtual CPE of an address of the first virtual CPE, and the second virtual CPE performs a tunnel connection to the first virtual CPE.

Abstract: An OLT (10) detects content distribution conditions in terminals, and performs control for performing switching to distribution to each terminal using an individual VLAN or distribution to a plurality of terminals by broadcasting using a broadcasting VLAN, in accordance with the detected content distribution conditions. Specifically, the OLT (10) detects that the number of viewers of a predetermined channel exceeds a predetermined threshold value or the number of viewers of the predetermined channel is less than the predetermined threshold value, as the content distribution conditions. Further, the OLT (10) performs switching to distribution using a broadcasting VLAN in a case where it is detected that the number of viewers of the predetermined channel exceeds the predetermined threshold value, and performs switching to distribution using an individual VLAN in a case where it is detected that the number of viewers of the predetermined channel is less than the predetermined threshold value.

Abstract: An MDF (10) receives MLDv2 received by vCPE (20) that is connected to CPE (50) via a tunnel. When the MLDv2 is received, the MDF (10) determines an edge router (30) that accommodates the CPE (50) being a transmission source of the MLDv2. Then, the MDF (10) instructs the determined edge router (30) to perform copy distribution of contents to the CPE (50) being the transmission source of the MLDv2.

Abstract: A storage unit configured to store information regarding flow characteristics indicating whether a flow constituted by a packet is a flow having a tendency to have a large number of short packets or a flow having a tendency to have a large number of long packets in association with destination information of the packet, a determination unit configured to, in a case where an input port receives a packet, determine flow characteristics of a flow constituted by the packet on the basis of the storage unit, and an output unit configured to output the packet received by the input port to a packet transfer apparatus in a load state indicating that a load due to the flow of the flow characteristics is light among a plurality of packet transfer apparatuses according to the flow characteristics determined by the determination unit are provided.

Abstract: A communication system (1) includes a terminal information acquisition unit configured to acquire version information of an OS of a terminal (10), a comparison unit configured to compare a version of the OS of the terminal (10) acquired by the terminal information acquisition unit with a latest version of the corresponding OS, and a setting unit configured to set, when the version of the OS of the terminal (10) is not the latest version, a path along which traffic of the terminal (10) passes through a security appliance (5), and set, when the version of the OS of the terminal (10) is the latest version, a path along which the traffic of the terminal (10) does not pass through the security appliance (5).

Abstract: In a communication system including first virtual CPE and second virtual CPE, the first virtual CPE includes a band acquisition unit configured to acquire a first contract band set for a subscriber under control of the first CPE and acquire a value of decrease in the first contract band when at least one subscriber terminal of the subscriber transitions from being under control of the first CPE to being under control of the second CPE, and a band control unit configured to control a communication band for the first CPE, and the second virtual CPE includes a band acquisition unit configured to acquire a second contract band set for a subscriber under control of the second CPE and acquire a value of increase in the second contract band, and a band control unit configured to control a communication band for the second CPE.

Abstract: In a communication system including a first virtual CPE to which a terminal belongs, a second virtual CPE, and an authentication server, when the terminal connects to the second virtual CPE, the second virtual CPE confirms whether terminal information of the terminal is registered in the authentication server, and when the terminal information is registered in the authentication server, the authentication server notifies the second virtual CPE of an address of the first virtual CPE, and the second virtual CPE performs a tunnel connection to the first virtual CPE.