Routing method and network transmission apparatus
AssigneeFujitsu Limited
InventorsMasahiko Takenaka, Kunikazu Matsumoto, Daisuke Shinomiya, Yutaka Takahashi, Hiroaki Sakai
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Abstract
It is determined whether or not the address of a first type specified in an address resolution query is an address that allows direct routing to a first network. If the direct routing is determined to be allowed, a routing table is configured such that a packet including, as a destination, the address of a second type obtained by the address resolution query is forwarded to the first network. If the direct routing is determined not to be allowed, the routing table is configured such that a packet including the obtained address of the second type as a destination is forwarded to a second network.
Claims9
A routing method for a network transmission apparatus connected to a first and a second network, the routing method comprising:
- determining, upon receiving an address resolution query specifying an address of a first type from a client, whether direct routing to the first network is allowed or not, based on the address of the first type;
- querying the first network for address resolution to resolve the address of the first type when the direct routing to the first network is determined to be allowed, and querying the second network for the address resolution when the direct routing to the first network is determined not to be allowed;
- transmitting, to the client, an address response obtained from the first network or the second network by the querying, the address response including an address of a second type;
- configuring, when having queried the first network for the address resolution, a routing table such that a packet including, as a destination, the address of the second type that is included in the obtained address response is forwarded to the first network;
- and
- configuring, when having queried the second network for the address resolution, the routing table such that a packet including, as a destination, the address of the second type that is included in the obtained address response is forwarded to the second network.
A routing method for a network transmission apparatus connected to a first and a second network, the routing method comprising:
- obtaining an address response to be forwarded to a client that has sent an address resolution query, the address response including an address of a first type specified by the client and an address of a second type that is an answer;
- determining based on the address of the first type included in the address response whether direct routing to the first network is allowed or not;
- configuring, when the direct routing to the first network is determined to be allowed, a routing table such that a packet including, as a destination, the address of the second type that is included in the address response is forwarded to the first network;
- and
- configuring, when the direct routing to the first network is determined not to be allowed, the routing table such that a packet including, as a destination, the address of the second type that is included in the address response is forwarded to the second network.
A network transmission apparatus capable of connecting to a first and a second network, the apparatus comprising:
- a storage device configured to store a routing table;
- and
- a controller configured to perform a procedure including:
- determining, upon receiving an address resolution query specifying an address of a first type from a client, whether direct routing to the first network is allowed or not, based on the address of the first type;
- querying the first network for address resolution to resolve the address of the first type when the direct routing to the first network is determined to be allowed, and querying the second network for the address resolution when the direct routing to the first network is determined not to be allowed;
- obtaining an address response including an address of a second type from the first network or the second network;
- configuring, when having queried the first network for the address resolution, the routing table such that a packet including, as a destination, the address of the second type that is included in the address response is forwarded to the first network;
- and
- configuring, when having queried the second network for the address resolution, the routing table such that a packet including, as a destination, the address of the second type that is included in the address response is forwarded to the second network.
A network transmission apparatus capable of connecting to a first and a second network, the apparatus comprising:
- a storage device configured to store a routing table;
- and
- a controller configured to perform a procedure including:
- obtaining an address response to be forwarded to a client that has sent an address resolution query, the address response including an address of a first type specified by the client and an address of a second type that is an answer;
- determining based on the address of the first type included in the address response whether direct routing to the first network is allowed or not;
- configuring, when the direct routing to the first network is determined to be allowed, the routing table such that a packet including, as a destination, the address of the second type that is included in the address response is forwarded to the first network;
- and
- configuring, when the direct routing to the first network is determined not to be allowed, the routing table such that a packet including, as a destination, the address of the second type that is included in the address response is forwarded to the second network.
Dependencies are inferred from the claim text.