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Cross-SR MPLS and SRV6 domain interoperation communication method and system

An interoperable and unified technology, applied in the field of communication, can solve problems such as complex message format conversion, reduce the complexity of business deployment and the difficulty of operation and maintenance, reduce the amount of configuration information and state information maintenance, and reduce the burden of encapsulation

Pending Publication Date: 2022-05-06
FENGHUO COMM SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention solves the problem that the message format needs to be complexly converted when the message is transmitted between the existing MPLS and SRV6 domains

Method used

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  • Cross-SR MPLS and SRV6 domain interoperation communication method and system
  • Cross-SR MPLS and SRV6 domain interoperation communication method and system
  • Cross-SR MPLS and SRV6 domain interoperation communication method and system

Examples

Experimental program
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Effect test

Embodiment 1

[0043] In the existing message transmission process, when the message propagates in the MPLS domain, it relies on the MPLS label to record the forwarding information. When it propagates in the SRV6 domain, it needs to record the forwarding information according to the SID stack information in the SRH. The SRV6 message does not contain MPLS. information.

[0044] like Figure 1 to Figure 5 As shown, it is the encapsulation and forwarding structure of SRV6 packets in the existing end-to-end SRV6 OVER MPLS scenario, and the packet encapsulation is performed based on END BM. The message to be sent is encapsulated on the first source node in the SRV6 domain. At this time, the message structure does not contain the label information of the MPLS domain, and is directly forwarded according to the normal SRV6 message, where SID3 is the END BMSID, bound to a SR on the MPLS label stack. When the packet is transmitted to the border node of the MPLS domain according to the SRV6 packet fo...

Embodiment 2

[0087] Based on the method for interoperable communication across SR MPLS and SRV6 domains provided in Embodiment 1, specific implementation methods can be selected according to requirements in different specific application scenarios. In some specific implementation manners, the cross-SR MPLS and SRV6 domain interoperable communication method provided in Embodiment 1 may be realized through the specific implementation manners in this embodiment.

[0088] like Figure 12 In the forwarding path shown, R1-R10 is a forwarder device, and an end-to-end L3VPN service between R1-R10 is established, and the link adjacency label (Ri-Rj) is denoted as ij. R1, R2, R3, R8, R9, and R10 support SRV6 forwarding, and the SID information assigned to the corresponding nodes is SIDi. R3, R4, R5, R6, R7, and R8 support MPLS forwarding, and the corresponding nodes will assign the adjacency label of Rij. The R10 device will allocate the service DT4 SID and forward it by looking up the VRF routing...

Embodiment 3

[0098] On the basis of the method for interoperable communication across SR MPLS and SRV6 domains provided by the above-mentioned embodiment 1 to embodiment 2, the present invention also provides a system for interoperable communication between SR MPLS and SRV6 domains that can be used to implement the above method .

[0099] like Figure 19 As shown, it includes a centralized management device 1 and at least one forwarding device 2 , and there is a communication connection between the centralized management device 1 and each forwarding device 2 . In actual implementation, the centralized management device 1 can be a separate device, or can use a certain forwarding device 2 as an agent, or can use the upper-layer centralized controller of the previous existing forwarding device. In the example of Embodiment 2, R1-R10 are all forwarding devices 2, and the centralized management device 1 can be an additional device capable of communicating with R1-R10, or any device in R1-R10, ...

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Abstract

The invention relates to the field of communication, in particular to a cross-SR MPLS and SRV6 domain interoperation communication method and a cross-SR MPLS and SRV6 domain interoperation communication system. Comprising the following steps: acquiring complete path information in a message forwarding path, and uniformly packaging SID information of each node in the path information into an IPV6 message; when entering the boundary of the SRV6 domain, writing the forwarded label information into an IPV6DA field of the IPV6 message; and analyzing the label information in the IPV6DA fields one by one, and forwarding according to the label information. According to the invention, end-to-end message transmission without intermediate conversion is realized, the amount of configuration information and state information maintenance on equipment are greatly reduced, the complexity of service deployment and the difficulty of operation and maintenance are reduced, only once message format conversion needs to be carried out at a sending end, additional format conversion does not need to be carried out during cross-domain forwarding, the chip message packaging burden is relieved, and the service efficiency is improved. And the chip forwarding efficiency is improved.

Description

【Technical field】 [0001] The invention relates to the communication field, in particular to a method and system for interoperable communication across SR MPLS and SRV6 domains. 【Background technique】 [0002] At present, the programmability of Segment Routing V6 (SRV6 for short) based on the IPV6 forwarding plane has been more and more recognized, and operator customers are also actively deploying SRV6, but from the perspective of network compatibility, it is impossible Upgrade all network devices to support SRV6 at one time. In the current network for a long time, SR Multi-Protocol Label Switching (Multi-Protocol Label Switching, abbreviated as MPLS) and SRV6 will still coexist. Operational scenario issues. [0003] In the live network, since the packet formats in the MPLS and SRV6 domains are different, packet format conversion needs to be performed at domain boundary nodes. On the boundary nodes between SR MPLS and SRV6 domains, a new set of SR MPLS-related tunnel confi...

Claims

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Application Information

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IPC IPC(8): H04L45/50H04L45/00H04L69/22
CPCH04L45/50H04L45/34H04L69/22
Inventor 董卫东张继鹏张玉婷
Owner FENGHUO COMM SCI & TECH CO LTD
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