Method and device for selecting a communication interface
OwnerArnaud KAISER, Alexandru PETRESCU +1inventors
InventorsArnaud KAISER, Alexandru PETRESCU, Christophe JANNETEAU
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Abstract
A method and a device for selecting a communication interface of a source host so as to transmit data to a destination host in an optimal manner. The method allows the source host to calculate the total route cost to the destination host from each of its interfaces, as a function of the routing metrics, and to select the interface corresponding to the lowest value of total route cost.
Claims14
In a communication network consisting of a plurality of routers connected by communication links and comprising at least one source host equipped with several communication interfaces for sending and receiving data, each interface being connected to a router of the communication network via a communication link having a link cost, a method for selecting an interface of the source host for transmitting data to a destination host connected to the communication network, the method comprising the steps of:
- sending from each interface of the source host a solicitation message to the router to which said interface is connected, to request the route cost to the destination host;
- receiving on the corresponding interface of the source host an advertisement message of the router to which said interface is connected giving a value of the route cost from said router to the destination host;
- calculating on the basis of the values received and of the link cost value of the corresponding link, the value of the total route cost to the destination host from the source host for each interface;
- comparing the total route cost values obtained;
- and
- selecting the interface corresponding to the lowest value of total route cost.
Dependencies are inferred from the claim text.