| 摘要 |
For precluding useless resources of a pseudo wire in a device distributing pseudo wires to lighten the receiving capacity, MPLS (Multi Protocol Label Switching) tunnels are established with an opposing device. From among the established MPLS tunnels, an MPLS tunnel having a remaining resource for a pseudo wire at interfaces having the MPLS tunnels in response to a pseudo wire establishment request is selected and the information of the selected MPLS tunnel associated with a label of the pseudo wire having the remaining resource is distributed to the opposing device. Alternatively after having established the MPLS tunnels with the opposing device, when a distribution request of the pseudo wire information associated with desired MPLS tunnels is received from the opposing device having received the pseudo sire establishment request, a label of the pseudo wire is similarly determined and distributed to the opposing device together with the information of the MPLS tunnel passing the pseudo wire.
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