NETWORK MANAGEMENT APPARATUS, NETWORK MANAGEMENT METHOD, AND NETWORK MANAGEMENT SYSTEM
First Claim
1. A network management apparatus in a network of a multipath configured for communication between servers, between storage apparatuses, or between a server and a storage apparatus, the network management apparatus for controlling a packet transfer path when transferring a packet to a virtual machine operating in the server or a logical volume operating in the storage apparatus by using the multipath,wherein the network management apparatus comprises:
- an acquisition part for acquiring network configuration information to manage a status of use of the network and statistic information to manage statistic information about packets flowing over the network; and
a control part for reassigning an existing address, which is already assigned to the virtual machine or the logical volume, based on the network configuration information and the statistic information acquired by the acquisition part,wherein when reassigning the existing address, the control part extracts a link with the largest link cost from among links comprising the network based on the network configuration information and identifies a flow routed though the extracted link based on the statistic information;
when receiving a path change request and a via link request to request a via link with respect to the specified flow from an external terminal, the control part selects either one of addresses of an address pair of the specified flow as a change target address; and
when changing the selected change target address, the control part changes the change target address to a candidate address to be assigned by selecting an address, which is routed through a link included in the via link request and has not been assigned, as the candidate address to be assigned.
1 Assignment
0 Petitions
Accused Products
Abstract
A network management apparatus is designed so that when reassigning the existing address, the network management apparatus extracts a link with the largest link cost from among links comprising the network based on the network configuration information and specifies a flow routed though the extracted link based on the statistic information; when receiving a path change request and a via link request to request a via link with respect to the specified flow from an external terminal, the network management apparatus selects either one of addresses of an address pair of the specified flow as a change target address; and when changing the selected change target address, the network management apparatus changes the change target address to a candidate address to be assigned by selecting an address, which is routed through a link included in the via link request and has not been assigned, as the candidate address to be assigned.
157 Citations
15 Claims
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1. A network management apparatus in a network of a multipath configured for communication between servers, between storage apparatuses, or between a server and a storage apparatus, the network management apparatus for controlling a packet transfer path when transferring a packet to a virtual machine operating in the server or a logical volume operating in the storage apparatus by using the multipath,
wherein the network management apparatus comprises: -
an acquisition part for acquiring network configuration information to manage a status of use of the network and statistic information to manage statistic information about packets flowing over the network; and a control part for reassigning an existing address, which is already assigned to the virtual machine or the logical volume, based on the network configuration information and the statistic information acquired by the acquisition part, wherein when reassigning the existing address, the control part extracts a link with the largest link cost from among links comprising the network based on the network configuration information and identifies a flow routed though the extracted link based on the statistic information;
when receiving a path change request and a via link request to request a via link with respect to the specified flow from an external terminal, the control part selects either one of addresses of an address pair of the specified flow as a change target address; and
when changing the selected change target address, the control part changes the change target address to a candidate address to be assigned by selecting an address, which is routed through a link included in the via link request and has not been assigned, as the candidate address to be assigned. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A network management method for a network management apparatus in a network of a multipath configured for communication between servers, between storage apparatuses, or between a server and a storage apparatus, the network management apparatus for controlling a packet transfer path when transferring a packet to a virtual machine operating in the server or a logical volume operating in the storage apparatus by using the multipath,
wherein the network management apparatus comprises: -
an acquisition part for acquiring network configuration information to manage a status of use of the network and statistic information to manage statistic information about packets flowing over the network; and a control part for reassigning an existing address, which is already assigned to the virtual machine or the logical volume, based on the network configuration information and the statistic information acquired by the acquisition part, wherein the network management method comprises; a first step executed, when reassigning the existing address, by the control part extracting a link with the largest link cost from among links comprising the network based on the network configuration information; a second step executed by the control part identifying a flow routed though the extracted link based on the statistic information; a third step executed, when receiving a path change request and a via link request to request a via link with respect to the specified flow from an external terminal, by the control part selecting either one of addresses of an address pair of the specified flow as a change target address; a fourth step executed, when changing the selected change target address, by the control part selecting an address, which is routed through a link included in the via link request and has not been assigned, as a candidate address to be assigned; and a fifth step executed by the control part changing the change target address to the candidate address to be assigned. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A network management system in a network of a multipath configured for communication between servers, between storage apparatuses, or between a server and a storage apparatus, the network management system for controlling a packet transfer path when transferring a packet to a virtual machine operating in the server or a logical volume operating in the storage apparatus by using the multipath,
wherein the network management system comprises: -
an acquisition part for acquiring network configuration information to manage a status of use of the network and statistic information to manage statistic information about packets flowing over the network; and a control part for reassigning an existing address, which is already assigned to the virtual machine or the logical volume, based on the network configuration information and the statistic information acquired by the acquisition part, wherein when reassigning the existing address, the control part extracts a link with the largest link cost from among links comprising the network based on the network configuration information and identifies a flow routed though the extracted link based on the statistic information;
when receiving a path change request and a via link request to request a via link with respect to the specified flow from an external terminal, the control part selects either one of addresses of an address pair of the specified flow as a change target address; and
when changing the selected change target address, the control part changes the change target address to a candidate address to be assigned by selecting an address, which is routed through a link included in the via link request and has not been assigned, as the candidate address to be assigned.
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Specification