Control apparatus, communication system, communication method, and program
A control apparatus includes: a topology management unit that manages a network topology formed by including a plurality of relay apparatuses; a link aggregation group management unit that groups ports of the plurality of relay apparatuses, having a physical link with an arbitrary node of the network topology and manages the grouped ports as a port of a virtual logical link between the plurality of relay apparatuses and the arbitrary node; and a relay apparatus control unit that controls the plurality of relay apparatuses, having the grouped ports, so that, when one of the plurality of relay apparatuses receives a broadcast packet or a multicast packet, a plurality of same packet are not forwarded to the physical links that form the virtual logical link.
1. A control apparatus, comprising:
a memory storing a network topology and a port group information of a plurality of switch apparatus; and
a controller comprising a processor configured to execute program instructions to:
determine, based on the port group information, a representative port from a plurality of ports belonging to a port group;
calculate, based on the network topology and the port group information, a flow path such that a predetermined packet passes only the representative port among the port group;
determine, based on the flow path, a forwarding instruction to forward a packet along the flow path; and
send the forwarding instruction to the switch apparatus.
2. The control apparatus according to claim 1 , wherein the predetermined packet is a multicast/broadcast packet.
3. The control apparatus according to claim 2 , wherein the predetermined packet includes a source address of the switch apparatus.
4. The control apparatus according to claim 1 , wherein the processor is configured to execute further program instructions to store the port group information registered by user to the storage.
5. The control apparatus according to claim 1 , wherein the processor is configured to execute further program instructions to change the representative port when a failure of the representative port is detected.
6. A communication system, comprising:
a control apparatus; and
a plurality of switches to forward packets based on forwarding instructions from a control apparatus,
wherein the control apparatus comprises:
a memory storing a network topology and a port group information of a plurality of switch apparatus; and
a controller comprising a processor configured to execute program instructions to:
determine, based on the port group information, a representative port from a plurality of ports belonging to the port group;
calculate, based on the network topology and the port group information, a flow path such that a predetermined packet passes only the representative port among the port group;
determine, based on the flow path, a forwarding instruction to forward a packet along the flow path; and
send the forwarding instruction to the switch apparatus.
7. The communication system according to claim 6 , wherein the predetermined packet is a multicast/broadcast packet.
8. The communication system according to claim 7 , wherein the predetermined packet includes a source address of the switch apparatus.
9. The communication system according to claim 6 , wherein the processor is configured to execute further program instructions to store the port group information registered by user to the storage.
10. The communication system according to claim 6 , wherein the processor is configured to execute further program instructions to change the representative port when a failure of the representative port is detected.
11. A control method, comprising:
determining, based on a port group information of a plurality of switch apparatus, a representative port from a plurality of ports belonging to a port group;
calculating, based on a network topology and the port group information, a flow path such that a predetermined packet passes only the representative port among the port group;
determining, based on the flow path, a forwarding instruction to forward a packet along the flow path; and
sending the forwarding instruction to a switch apparatus of the plurality of switch apparatuses.
12. The control method according to claim 11 , wherein the predetermined packet is a multicast/broadcast packet.
13. The control method according to claim 12 , wherein the predetermined packet includes a source address of the switch apparatus.
14. The control method according to claim 11 , further comprising:
storing the port group information registered by user to the storage.
15. The control method according to claim 11 , further comprising:
changing the representative port when a failure of the representative port is detected.