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Entropy Label Capability Sending and Receiving Method and Label Switching Router

A label switching and router technology, applied in the field of communication, can solve the problems of MPLS packet load balancing, uncertainty of whether it has entropy label capability, SR network does not support EL technology, etc.

Active Publication Date: 2021-03-23
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the SR network, the Ingress LSR of the MPLS tunnel cannot determine whether the egress LSR of the MPLS tunnel has the entropy label capability (Entropy Label Capability, ELC). Load balancing for MPLS packet forwarding

Method used

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  • Entropy Label Capability Sending and Receiving Method and Label Switching Router
  • Entropy Label Capability Sending and Receiving Method and Label Switching Router
  • Entropy Label Capability Sending and Receiving Method and Label Switching Router

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Embodiment Construction

[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0048] see figure 1 , the embodiment of the present invention provides a method for message processing, the method is applicable to SR network, the method includes:

[0049] 101. The Ingress LSR receives the IGP-based first notification message sent by the first Egress LSR, the first notification message is generated by the first Egress LSR, the first notification mess...

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Abstract

This application discloses a message processing method and an LSR. The method includes: the Ingress LSR of the first MPLS tunnel receives the IGP-based first notification message generated by the first Egress LSR of the first MPLS tunnel, the first notification message includes an ELC mark, and the ELC mark uses Indicating that the first Egress LSR has an ELC; after the Ingress LSR learns that the first Egress LSR has an ELC through the first notification message, inserting a label into the first message entering the first MPLS tunnel Generate a second message, the label forms an MPLS label stack, and the MPLS label stack includes from bottom to top: the first EL, the first ELI and the first TL, along the first MPLS tunnel to the first The egress LSR sends the second packet. Through the technical solution of the embodiment of the present invention, the Transit LSR of the first MPLS tunnel can perform load-balanced forwarding of the second message according to the first EL, which is beneficial to realize EL technology in the SR network.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of communication, and in particular to a message processing method and a router. Background technique [0002] In the segment routing (Segment Routing, SR) technology, the control plane adopts the interior gateway protocol (Interior Gateway Protocol, IGP) based on the link state, such as: Intermediate System to Intermediate System (Intermediate System to Intermediate System, IS-IS) protocol, open The shortest path first (Open Shortest Path First, OSPF) protocol to transfer the tunnel label (Tunnel Label, TL) of the multi-protocol label switching (Multi Protocol Label Switching, MPLS) of the Label Switching Router (Label Switching Router, LSR) with global significance , the data plane forwards MPLS packets based on the global TL sent by the control plane. Compared with the existing MPLS technology system, it simplifies the operation and maintenance management of the MPLS network, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/723H04L12/803H04L12/911H04L45/50H04L45/58H04L45/74
CPCH04L12/4633H04L12/6418H04L45/50H04L45/32H04L45/583H04L45/74H04L47/825
Inventor 徐小虎
Owner HUAWEI TECH CO LTD
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