Information processing apparatus, network system, and computer-readable recording medium

1. An information processing apparatus comprising:

a memory; and

a processor coupled to the memory and configured to:

perform switching to a transmission device in a standby status of transmission devices in a redundant configuration when a transmission device under operation of the transmission devices in the redundant configuration fails;

store, as normal coupling information, coupling information at a time when a network system, which is constituted by the information processing apparatus and the transmission devices in the redundant configuration, is normal, the coupling information being information on a transmission device port to which a communication control device included in the information processing apparatus is coupled;

when the transmission device to which the communication control device is coupled is repaired or replaced, determine whether or not the coupling information transmitted from the transmission device after the repair or replacement matches with the normal coupling information; and

control communications between the communication control device and the transmission device port to which the communication control device is coupled based on the determination result.

2. The information processing apparatus according to claim 1 , wherein the coupling information includes information on transmission device ports which constitute a VLAN to which the transmission device port belongs.

3. The information processing apparatus according to claim 1 , wherein the processor is configured to:

receive the coupling information from the transmission device which is powered on and stores the coupling information as current coupling information in the memory; and

store the current coupling information as the normal coupling information in the memory based on an instruction to store a normal state.

4. The information processing apparatus according to claim 1 , wherein

when the normal coupling information does not exist, the processor is configured to determine that the transmission device after the repair or replacement is normal, and

when determining that the transmission device after the repair or replacement is normal, the processor is configured to start communications between the communication control device and the transmission device port to which the communication control device is coupled.

5. The information processing apparatus according to claim 2 , wherein

the transmission device is a switch,

the communication control device is a network interface card, and

the information on the transmission device port includes an identifier of the transmission device port, information indicating tag or untag set for the transmission device port, and a link status.

6. A network system comprising:

transmission devices in a redundant configuration; and

an information processing apparatus that performs switching to the transmission device in a standby status when the transmission device under operation fails, wherein

each of the transmission devices is configured to:

generate coupling information for each transmission device port, the coupling information being information on the transmission device port; and

transmit the coupling information which is generated, and

the information processing apparatus is configured to:

receive the coupling information which is transmitted;

stores, as normal coupling information, the coupling information which is received when the network system is normal;

when the transmission device under operation fails and is repaired or replaced, determine whether or not the coupling information which is transmitted from the transmission device after the repair or replacement matches with the normal coupling information; and

control communications with the transmission device after the repair or replacement based on the determination result.

7. The network system according to claim 6 , wherein the coupling information includes information on transmission device ports which constitute a VLAN to which the transmission device port belongs.

8. The network system according to claim 6 , wherein

the information processing apparatus is configured to:

receive the coupling information and stores the coupling information as current coupling information in a memory; and

store the current coupling information as the normal coupling information in the memory based on an instruction to store a normal state.

9. A non-transitory computer-readable recording medium having stored therein a teaming program that is executed by an information processing apparatus and causes the information processing apparatus to execute a process, the information processing apparatus being configured to construct a network system together with transmission devices in a redundant configuration and being configured to perform switching to the transmission device in a standby status when the transmission device under operation fails, the process comprising:

storing, as normal coupling information in a memory, coupling information at a time when the network system is normal, the coupling information being information on a transmission device port to which a communication control device included in the information processing apparatus is coupled;

determining, when the transmission device to which the communication control device is coupled is repaired or replaced, whether or not the coupling information transmitted from the transmission device after the repair or replacement matches with the normal coupling information; and

controlling communications between the communication control device and the transmission device port to which the communication control device is coupled based on a result obtained in the determining.

10. The non-transitory computer-readable recording medium according to claim 9 , wherein the coupling information includes information on transmission device ports which constitute a VLAN to which the transmission device port belongs.

11. The non-transitory computer-readable recording medium according to claim 9 , the process further comprising:

receiving the coupling information from the transmission device powered on and storing the coupling information as current coupling information in the memory; and

storing the current coupling information as the normal coupling information in the memory based on an instruction to store a normal state.