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Method for providing a redundant relay, particularly routing function, system, computer program and computer-readable medium

A repeater, redundant technology, used in transmission systems, digital transmission systems, data exchange networks, etc.

Pending Publication Date: 2021-05-28
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] DHCPv6 is also aware of redundancy mechanisms (see especially RFCs 6853 "DHCPv6 Redundancy Deployment Considerations" and 7031 "DHCPv6 Failover Requirements (FailoverRequirements)"), however, only one is used for DHCPv6 servers because attention is paid to server redundancy Yu Shang

Method used

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  • Method for providing a redundant relay, particularly routing function, system, computer program and computer-readable medium

Examples

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Embodiment Construction

[0063] Shown is an embodiment of a system 1 for providing redundant repeaters, presently routing functions, according to the invention.

[0064] The system 1 comprises two redundant repeaters, which in the shown embodiment are given by two redundant routers 2, 3, which are not otherwise shown in the figures of the automation solution The upstream sub-network 4 of the upper layer of the industrialized network is connected with the downstream sub-network 5 of the lower layer. Furthermore, the upstream and downstream sub-networks 4 , 5 are only represented purely schematically in the figures by arrows 6 pointing upwards or downwards. Each of the two redundant routers 2 , 3 has an upstream interface (not shown in the drawing) connected to the upstream subnetwork 4 and a downstream interface (not shown in the drawing) connected to the downstream subnetwork 5 . interface.

[0065] Each of the two redundant routers 2, 3 also comprises a DHCPv6 client 7', an IP stack 8 and a router ...

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PUM

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Abstract

The invention relates to a method for providing a redundant relay, particularly routing function in a network, wherein a superordinate subnetwork (4) is connected to a subordinate subnetwork (5) via redundant relays, particularly routers (2, 3), a maximum of one of the redundant relays (2, 3) being operated in an active mode at any one time, while the remaining relay(s) (2, 3) are in standby mode, each redundant relay (2, 3) comprising a relay redundancy module (10) for controlling the relay mode and a DHCPv6 client (7) for processing a prefix delegation, particularly according to RFC 3633, and the redundant relays (2, 3) each having a relay control module (13), to which the relay redundancy module (10) of the particular relay (2, 3) signals the current relay mode, and the relay control module (13) of the active relay (2, 3) synchronizing a virtual DUID of its DHCPv6 client (7) and / or a prefix delegated to the active relay (2, 3) to the (or each) relay (2, 3) in standby mode. The invention furthermore relates to a system, a computer program and a computer-readable medium.

Description

technical field [0001] The invention relates to a method for providing redundant repeaters, in particular routing functions, in industrial networks in which an upper-level subnetwork is routed via two or more redundant repeaters, in particular are routers connected to the underlying subnetwork, wherein at most one of the redundant repeaters is always operating in active mode, while one or more remaining repeaters are in standby mode, wherein each redundant The repeaters each have a repeater redundancy module for controlling the repeater mode, and for the case of failure of the currently active repeater, one or more of the remaining redundant repeaters are activated. [0002] Furthermore, the invention relates to a system for providing redundant repeaters, in particular routing functions, which system comprises two or more redundant repeaters, in particular routers, which enable sub-networks of the upper layer to communicate with the sub-networks of the lower layer A sub-netwo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/14H04L29/12H04L12/713H04L69/40H04L45/586
CPCH04L45/586H04L69/40H04L2101/659H04L61/5014
Inventor 哈拉尔德·阿尔布雷希特亨德里克·格拉赫斯特凡·赫默马丁·梅恩
Owner SIEMENS AG