Classification processing method and network equipment for multi-protocol label switching service

Abstract

The invention discloses one MPLS business sort process method, wherein, the device divides the MPLS label into several sections through all sort of all transfer business to form each label range the equal polymer relationship; MPLS network device determines received label range through the relation between label range and transfer to determine transfer polymer and to execute relative process. The invention also discloses one multi-agreement label exchange business network device.

Description

technical field [0001] The invention relates to the technical field of MPLS (Multi Protocol Label Switch, multi-protocol label switching), in particular to a multi-protocol label switching service classification processing method and network equipment. Background technique [0002] Multi-protocol label switching uses short and fixed-length labels to encapsulate layer-3 packets and layer-2 data frames, and forwards them only based on labels on the MPLS network, without the need for complex routing lookups like IP. The MPLS packet header is 32 bits, as shown in Figure 1, where 0 to 20 bits are the label value, 21 to 22 bits are CoS (Class of Service), and 23 bits are S (stack indication, indicating whether the label is the lowest layer label) , 24 to 32 bits are TTL (Time to Live, time to live). [0003] VPN (Virtual Private Network, Virtual Private Network) service is one of the most important applications of MPLS. MPLS VPN can be divided into two categories: L3VPN (Layer 3 ...

AI Technical Summary

Problems solved by technology

[0010] In the prior art, when an MPLS network device processes an MPLS message, it is impossible to predict the service type of the label before querying the label mapping table, so it is also impossible to determine which processing flow the MPLS message enters, that is, it cannot be guided by the label itself. One-step business process diversion requires further query label mapping table to determine

Assume that an MPLS network device needs to perform ACL (Access Control List, Access Control List) on VPLS packets and L3VPN packets into different engines for processing, because each label will consume an ACL rule, and the system cannot provide such a rule at all. Great ACL resource

[0011] In addition, the existing global label space block model shared by all services also leads to a large number of entries in the service label mapping table, and when it is necessary to classify related services and processing processes, the contents of the entries are complex, which affects forwarding efficiency

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