US 2011/0211587 A1 · Packet Relaying Device, Packet Relaying Method And Program

Abstract

A packet relaying device, wherein a reception processing unit judges an interface used to receive an IP packet from a network, and records a reception interface identifier (RID) which is information for identifying the interface, in a packet transmission/reception management table, a route control unit records, in the packet transmission/reception management table, a transmission interface identifier (SID) which is information for identifying the transmission interface obtained by selection of a transmission path and the above described reception interface identifier (RID), in such a manner that the identifies are associated with each other. A transmission processing unit makes a comparison between the reception interface identifier (RID) and the transmission interface identifier (SID) recorded in the packet transmission/reception management table, and when the both identifiers are the interface identifier of the same virtual network interface, the transmission processing unit discards the IP packet to invalidate the transmission process.

Claims13

Dependent claims

A packet relaying device, comprising:

a plurality of interfaces including a virtual network interface;
a reception processing unit configured to receive a packet through one of the plurality of interfaces;
a route control unit configured to execute a route selection to determine, from among the plurality of interfaces, an interface used to transmit the received packet;
and
a transmission processing unit configured to discard the received packet when the interface which was used to receive the packet in the reception processing unit and the interface determined by the route control unit are identical with each other, and are the virtual network interface.

2 more elements

A packet relaying method, comprising the steps of:

receiving a packet through one of a plurality of interfaces including a virtual network interface;
executing a route selection to determine, from among the plurality of interfaces, an interface used to transmit the received packet;
and
discarding the received packet when the interface which was used to receive the packet and the interface determined by the route selection are identical with each other, and are the virtual network interface.

1 more element

A computer readable medium having computer readable instruction stored thereon, which, when executed by a processor of a computer, configures the processor to perform the steps of:

receiving a packet through one of a plurality of interfaces including a virtual network interface;
executing a route selection to determine, from among the plurality of interfaces, an interface used to transmit the received packet;
and
discarding the received packet when the interface which was used to receive the packet and the interface determined by the route selection are identical with each other, and are the virtual network interface.

1 more element

Dependencies are inferred from the claim text.

Packet Relaying Device, Packet Relaying Method And Program

Life of this patent

Packet Relaying Device, Packet Relaying Method And Program

Life of this patent

Abstract

Claims13