NETWORK SYSTEM, CONTROL DEVICES, CONTROL METHOD, AND MEDIUM
First Claim
1. A network system including comprising:
- a switch;
a link connecting switches;
a plurality of first control apparatuses each of that is provided to each first domain when the network system is divided, and controls the switch included in each first domain;
a second control apparatus that is provided to a second domain that is an aggregation of the plurality of first domains and controls the plurality of first control apparatuses,each of the first control apparatuses including a database holding an address of a terminal and an identifier of a switch port accommodating the terminal associated with each other,upon reception of a frame in that a path is not set from a switch included in its own domain, each of the first control apparatuses determining whether a switch port of a forwarding destination of the frame can be resolved based on the database or not, and,each of the first control apparatuses forwarding the unset frame information including an identifier of own domain as a departure domain identifier and including the frame, to the second control apparatus when the switch port cannot be resolved.
1 Assignment
0 Petitions
Accused Products
Abstract
A network system according to the present invention includes switches; a link connecting switches; first control apparatuses provided to first domain; and a second control apparatus that is provided to a second domain that is an aggregation of the plurality of first domains and controls the plurality of first control apparatuses, each of the first control apparatus controlling the switch included in the first domain, including a database holding an address of a terminal and an identifier of a switch port of the terminal, determining whether a switch port of a forwarding destination of the frame can be resolved based on the database upon reception of a frame in that a path is not set from a switch included in its own domain, and forwarding the unset frame information including an identifier of own domain and the frame to the second control apparatus when the switch port is not resolved.
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Citations
17 Claims
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1. A network system including comprising:
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a switch; a link connecting switches; a plurality of first control apparatuses each of that is provided to each first domain when the network system is divided, and controls the switch included in each first domain; a second control apparatus that is provided to a second domain that is an aggregation of the plurality of first domains and controls the plurality of first control apparatuses, each of the first control apparatuses including a database holding an address of a terminal and an identifier of a switch port accommodating the terminal associated with each other, upon reception of a frame in that a path is not set from a switch included in its own domain, each of the first control apparatuses determining whether a switch port of a forwarding destination of the frame can be resolved based on the database or not, and, each of the first control apparatuses forwarding the unset frame information including an identifier of own domain as a departure domain identifier and including the frame, to the second control apparatus when the switch port cannot be resolved. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9-13. -13. (canceled)
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14. A control method for a network system including a switch, a link connecting switches, a first control apparatus that is provided to a first domain when the network system is divided into a plurality of first domains and controls the switch included in the first domain, and a second control apparatus that is provided to a second domain that is an aggregation of the plurality of first domains and controls the plurality of the first control apparatuses, the method comprising:
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by the first control apparatus, holding an address of a terminal and an identifier of a switch port accommodating the terminal associated with each other in a database; upon reception of a frame in that a path is not set from a switch included in its own domain, determining whether a switch port of a forwarding destination of the frame can be resolved based on the database or not; and when the switch port cannot be resolved, forwarding unset frame information including an identifier of own domain as a departure domain identifier and including the frame, to the second control apparatus. - View Dependent Claims (15, 16)
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17. A computer readable non-transitory medium embodying a program, the program causing a network system including a switch, a link connecting switches, a first control apparatus that is provided to a first domain when the network system is divided into a plurality of first domains and controls a switch included in the first domain, and a second control apparatus that is provided to a second domain that is an aggregation of the plurality of first domains and controls the plurality of the first control apparatuses to perform a method, the method causing the first control apparatus to perform:
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holding an address of a terminal and an identifier of a switch port accommodating the terminal associated with each other in a database; upon reception of a frame in that a path is not set from a switch included in its own domain, determining whether a switch port of a forwarding destination of the frame can be resolved based on the database or not; and when the switch port cannot be resolved, forwarding unset frame information including an identifier of own domain as a departure domain identifier and including the frame, to the second control apparatus.
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Specification