NETWORK SYSTEM, CONTROL DEVICES, CONTROL METHOD, AND PROGRAM
First Claim
1. A network system comprising:
- a switch;
a link connecting switches;
a plurality of first control apparatuses that are provided to a plurality of first domains respectively when the network system is divided into the plurality of first domains and control the switch included in the plurality of first domains respectively,eachinclude a database holding an address of a terminal and an identifier of a switch port accommodating the terminal associated with each other, the address of the terminal including an identifier of the first domain to which the switch accommodating the terminal to which the address is provided belongs,upon reception of a frame for which a path is not set from the switch included in an own domain of the first control apparatus, determine whether a destination address of the frame belongs to the own domain of the first control apparatus or not, andwhen the destination address does not belongs to the own domain of the first control apparatus, forward the frame to a second control apparatus; and
the 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.
1 Assignment
0 Petitions
Accused Products
Abstract
A load applied to a forwarding system such as a switch or a link is reduced by restricting a range of broadcasting of an unset frame. A network system including a switch and a link connecting switches includes a plurality of first control apparatuses that are provided to a plurality of first domains respectively when the network system is divided into the plurality of first domains and control the switch included in the plurality of first domains respectively, 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. The plurality of first control apparatuses each include a database holding an address of a terminal and an identifier of a switch port accommodating the terminal associated with each other, the address of the terminal including an identifier of the first domain to which the switch accommodating the terminal to which the address is provided belongs, upon reception of a frame for which a path is not set from the switch included in an own domain of the first control apparatus, determine whether a destination address of the frame belongs to the own domain of the first control apparatus or not, and when the destination address does not belongs to the own domain of the first control apparatus, forward the frame to the second control apparatus.
5 Citations
13 Claims
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1. A network system comprising:
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a switch; a link connecting switches; a plurality of first control apparatuses that are provided to a plurality of first domains respectively when the network system is divided into the plurality of first domains and control the switch included in the plurality of first domains respectively, each include a database holding an address of a terminal and an identifier of a switch port accommodating the terminal associated with each other, the address of the terminal including an identifier of the first domain to which the switch accommodating the terminal to which the address is provided belongs, upon reception of a frame for which a path is not set from the switch included in an own domain of the first control apparatus, determine whether a destination address of the frame belongs to the own domain of the first control apparatus or not, and when the destination address does not belongs to the own domain of the first control apparatus, forward the frame to a second control apparatus; and the 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. - View Dependent Claims (2, 3, 4, 5)
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6-9. -9. (canceled)
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10. A control method for a first control apparatus that is provided to one of a plurality of first domains when a network system including a switch and a link connecting switches is divided into the plurality of first domains and controls the switch included in the first domain, the method comprising:
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holding an address of a terminal and an identifier of a switch port accommodating the terminal associated with each other, the address of the terminal including an identifier of the first domain to which the switch accommodating the terminal to which the address is provided belongs; determining, upon reception of a frame for which a path is not set from the switch included in an own domain of the first control apparatus, whether a destination address of the frame belongs to the own domain of the first control apparatus or not; and forwarding, when the destination address does not belongs to the own domain of the first control apparatus, the frame to 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. - View Dependent Claims (11)
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12. A non-transitory computer readable medium recording thereon a program, causing a computer for a first control apparatus that is provided to one of a plurality of first domains when a network system including a switch and a link connecting switches is divided into the plurality of first domains and controls the switch included in the first domain to perform a method comprising:
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holding an address of a terminal and an identifier of a switch port accommodating the terminal associated with each other; determining, upon reception of a frame for which a path is not set from the switch included in an own domain of the first control apparatus, whether a destination address of the frame belongs to the own domain of the first control apparatus or not; and forwarding, when the destination address does not belongs to the own domain of the first control apparatus, the frame to 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, wherein the address of the terminal including an identifier of the first domain to which the switch accommodating the terminal to which the address is provided belongs. - View Dependent Claims (13)
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Specification