Method and system for establishing label switched path and network node
A label switching path and label technology, applied in the field of communication, can solve the problem of increasing network processing data packet processing requirements, and achieve the effect of avoiding data packet disorder and satisfying management and maintenance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0137] This embodiment illustrates the process of establishing an LSP by LDP in DoD mode. In the DoD mode, since the upstream LSR needs to request label mapping from the downstream LSR first, the downstream LSR sends the label mapping packet to the upstream LSR only after receiving the label request packet from the upstream LSR. Therefore, in the DoD mode, the initiation of the ECMP command or request is mainly completed by the ingress edge LSR (ingress) node, and the initiation method can be realized by configuring the ingress node through the network management.
[0138] figure 2 In the DoD mode provided in this embodiment, the establishment of the ECMP path topology diagram is avoided. like figure 2 As shown, assume that FEC5.5.5.5 is a specific FEC that does not need to establish ECMP. Configure the NO-ECMP (that is, do not establish ECMP) command about FEC5.5.5.5 on the ingress node, then the ingress node queries the routing table to determine the route that the FEC ...
Embodiment 2
[0157] In this embodiment, the process of establishing an LSP by LDP is described in DU mode. In the DU mode, the upstream node does not need to request a label from the downstream. After the LDP session is successfully established, the downstream LSR actively sends a label mapping message to the upstream. Therefore, in the DU mode, the command or request of whether to establish ECMP is initiated by the egress node, and the initiation method can be configured on the egress node through the network management.
[0158] For the DU mode, when the independent (independent) mode or the ordered (order) mode is adopted, the two differ in when the downstream LSR feeds back the label mapping message to the upstream LSR. In the DU order mode, the intermediate node receives After receiving the label mapping message sent by the downstream node, the label mapping message is sent to the upstream node; in the DU independent mode, the intermediate node may send the label mapping message to th...
Embodiment 3
[0175] This embodiment illustrates the process of establishing an LSP by LDP in an independent manner in the DU mode. In the DU mode, the upstream node does not need to request a label from the downstream. After the LDP session is successfully established, the downstream LSR actively sends a label mapping message to the upstream.
[0176] Image 6 In the DU independent mode provided for this embodiment, the establishment of the ECMP path topology diagram is avoided. like Image 6 As shown, let FEC5.5.5.9 be a specific FEC that does not need to establish ECMP. R1, R2, R3, R4, and R5 are used to identify five routers respectively; 1, 2, 3, and 4 are used to indicate the sending order of label mapping packets; 1024, 1025, 1026, and 1027 are used to indicate that label mapping packets are up The label value sent by the traveler; 5.5.5.9 identifies the egress router for FEC5.5.5.9, and can also indicate the destination address prefix of FEC5.5.5.9.
[0177] In this embodiment, ...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com