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Message forwarding method, device, storage medium and electronic equipment based on SRV6 network

A packet forwarding and device technology, applied in the IP network field, can solve problems such as forwarding interruptions

Active Publication Date: 2020-12-29
PURPLE MOUNTAIN LAB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Technical purpose: In order to solve the above technical problems, the present invention provides a message forwarding method, device and storage medium based on SRv6 network, by adding SRv6 operation instructions and increasing NAT detection function, the situation of NAT in SRv6 domain is solved The following problems lead to the interruption of forwarding

Method used

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  • Message forwarding method, device, storage medium and electronic equipment based on SRV6 network
  • Message forwarding method, device, storage medium and electronic equipment based on SRV6 network
  • Message forwarding method, device, storage medium and electronic equipment based on SRV6 network

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Embodiment

[0061] Such as image 3 As shown, the private network IP address of the End2 node is B1::1, and the public network address converted by the NAT device is C1::1. There is an SRv6 policy between A->B, and the packet arrives through the nodes in the above figure. B-device. Including the following steps:

[0062] 1) The operation of configuring the SID of End1 is END.N, and the End2 node sends a NAT detection message, the format is as follows Figure 4 As shown, the source address is the SID of End2 (B1::1), the destination address is the SID of End1 (A2::1), and the NAT-detect SID is: the SID of End1 (A2::1).

[0063] 2) The End1 node receives the SR NAT detection message. According to the address A2::1, it knows that this is a NAT processing operation, and the Next Header in the message is 134, and obtains the source IP and NAT-detect SID of the message. When the source IP of the packet is the public network address after NAT conversion, the corresponding relationship between...

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Abstract

The invention discloses a message forwarding method and device based on an SRv6 network, a storage medium and an electronic device, an original message is sent by a device A to reach a device B through a plurality of End nodes and at least one NAT device, and the NAT device is located between the two End nodes. The SRH structure is different from a traditional SRH structure, the NAT detection message based on the SR strategy is sent through the End node and is used for public network address learning, meanwhile, an NAT-det type is added into a Next Header of an SRH message extension header, sothat an End operation type End.N of an SRv6 is newly added in an End node; and NAT public network address learning and message packaging during forwarding can be carried out according to different Next Header types, and the problem that in an existing SRv6 communication system, a message cannot be forwarded due to existence of equipment of a private network IP is solved.

Description

technical field [0001] The present invention relates to the technical field of IP networks, in particular to a message forwarding method, device, storage medium and electronic equipment based on an SRv6 network. Background technique [0002] The SR (Segment Routing) protocol is an evolutionary extension based on the existing network, providing network programmability. SR is a source routing protocol that supports inserting forwarding operation instructions into packets at the starting point of the path to guide the forwarding of packets in the network, thereby supporting network programmability. Currently, SR supports two data planes, MPLS and IPv6. The SR based on IPv6 data plane is called SRv6. [0003] SRv6 adds SRH extensions to IPv6 packets to replace the label forwarding function under traditional MPLS, and uses 128-bit IPv6 addresses as network cable node identification SIDs. When transmitting data, SRv6 is combined with the SID of each node on the transmission path...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/721H04L12/46H04L29/12
CPCH04L12/4633H04L45/34H04L45/70H04L61/2503
Inventor 王兵邢业平张晨汪硕黄韬
Owner PURPLE MOUNTAIN LAB
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