External layer label coding method, traffic congestion control method and device

Abstract

The invention discloses an external layer label coding method, a traffic congestion control method and a traffic congestion control device. The external layer label coding method comprises the steps that a PE head node codes an EXP field of an external layer label of a message according to a service type of an incoming node PHB and message color information of the message, wherein the EXP field comprises a first field for identifying the service type of the message and a second field for identifying whether the message entering a virtual link of the PE head node is a virtual private network service message in a committed bandwidth, so that a P node can map PHB according to the EXP field, conducts congestion management control of each tunnel and each queue and conducts second-level QOS dispatching management conditionally, thereby solving the problem in the related technology that end-to-end QoS control cannot be achieved since the P node cannot analyze VPN information under the condition of multi-VPN service multiplexing tunnels in an E-LSP-based MPLS network.

Description

technical field [0001] The present invention relates to the communication field, in particular to an outer label coding method, a flow congestion control method and a device. Background technique [0002] In a Multi-Protocol Label Switching (MPLS) network using an EXP-based Label Switching Path (EXP-LabelSwitchPath, referred to as E-LSP), if there are multiple Virtual Private Networks (Virtual Private Network, referred to as VPN) In the case of using a tunnel, the existing model cannot guarantee the end-to-end bandwidth requirements of the VPN. [0003] such as in figure 1 In the shown networking, it is assumed that actual physical links are Gigabit Ethernet (Gigabit Ethernet, GE for short) ports. At the head node of the carrier's edge router (PE), after Quality of Service (QoS for short) scheduling processing, the actual traffic of lsp1 is the best-effort (Best- effort, referred to as BE) business flow cir=600M, eir=200M (among them, agreed information rate, committed ba...

AI Technical Summary

Problems solved by technology

It can be seen that in the case of multi-VPN business multiplexing tunnels, the end-to-end QoS cannot be realized because the VPN information is not transmitted to the P node.

[0005] In the E-LSP-based MPLS network of the related technology, in the case of multiple VPN service multiplexing tunnels, the end-to-end QoS control cannot be realized because the P node cannot resolve the VPN information, and no effective solution has been proposed so far.

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