Method and node for establishing quality of service reservation

Abstract

A method for establishing a quality of service reservation, comprising: a first node obtains a first protocol message, the first protocol message includes a first flow definition field, a first QoS requirement field, and a first forwarding header information field, and the first protocol The message is used to establish QoS reservation for the service flow, and the first forwarding header information field is used to indicate the forwarding path of the service flow; the first node determines the flow according to the first flow definition field; the first node extracts the first QoS requirement field in the first QoS requirement field. QoS requirement information: a binding relationship between the first node generated flow and the first QoS requirement information. The method determines the flow and the QoS requirement information through the protocol message, further generates the binding relationship between the flow and the QoS requirement information, and can establish a QoS reservation for the service flow, and the hop-by-hop forwarding of the protocol message can provide a step-by-step basis for the service flow. The QoS reservation can be established by hopping, so as to ensure the QoS of the service flow, and the reservation can be adapted to various network types.

Description

technical field [0001] The embodiments of the present invention relate to the communication field, and more specifically, relate to a method and node for establishing QoS reservation. Background technique [0002] The switching device in the network forwards based on the header information of the packet. When congestion occurs in the direction of the outbound interface, the switching device will guarantee the high-priority service and discard the packets of other services that cannot be guaranteed. In this way, the switching device cannot guarantee the quality of service (Quality of Service, QoS) of certain services. The Integrated Service (IS) proposed by the Internet Engineering Task Force (IETF) is an end-to-end flow-based QoS technology, which can realize QoS guarantee in the way of resource reservation. Among them, the Resource Reservation Protocol (Resource Reservation Protocol, RSVP) is the core signaling protocol in the IS. [0003] However, RSVP is designed for In...

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Problems solved by technology

[0003] However, RSVP is designed for Internet Protocol (IP) networks. RSVP packets can only complete resource reservation along service paths on devices in IP networks, and cannot be used in Multi-Protocol Label Switching (MPLS) ) for resource reservation in the network

In this way, RSVP packets cannot establish resource reservations for the MPLS network hop by hop

In other words, RSVP can only be applied to IP networks, but not to other types of networks

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