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Gateway redundancy method and system

A gateway and redundant technology, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve problems such as poor management, complicated VRRP deployment methods, waste of idle equipment, etc.

Inactive Publication Date: 2020-10-20
GUANGDONG EFLYCLOUD COMPUTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the industry generally implements the active / standby redundancy of gateways through VRRP. This method has three obvious disadvantages: First, the VRRP deployment method is complicated and difficult to manage, and only the main device is working in VRRP, so that the idle devices are wasted Second, VRRP performs state communication between devices through multicast synchronization, which has certain requirements on the network; third, if state synchronization fails and multiple gateways are enabled at the same time, it will have a certain impact on the user network

Method used

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Examples

Experimental program
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Embodiment 1

[0034] Generally, in the LACP convergence technology, there are many gateway devices, and a message from the gateway of the external network is randomly transmitted to the switch through the port of one of the gateway devices, or the message is sent from the vm virtual machine The external network gateway is also randomly transmitted to the external network gateway through the port of one of the gateway devices; therefore, for the local ARP table in each gateway device, the recorded information (such as source IP and source mac) should be consistent, so , Two gateway devices should keep mutual learning messages and transmit relevant message information and save the information. In this embodiment, two gateway devices are used for illustration, and it is not limited to these two gateway devices, but two gateway devices in all gateway devices have this method.

[0035] Such as figure 1 As shown, this embodiment discloses a gateway redundancy method, and the specific steps are:

[00...

Embodiment 2

[0059] Such as figure 2 As shown, this embodiment discloses a gateway redundancy system, including a computing virtualization resource pool, a switch, an LACP aggregation module, a first gateway device, a second gateway device, a BFD detection module, and a public network gateway module. The first The gateway device includes a first ARP table module and a virtual gateway module, the second gateway device includes a second ARP table module, the first ARP table module includes a first local ARP table, and the second ARP table module includes a second ARP table module. Local ARP table; the computing virtualization resources include several VM virtual machines;

[0060] The computing virtualization resource pool, the switch, the LACP aggregation module, the first gateway device, and the public network gateway module are sequentially connected; the computing virtualization resource pool, the switch, the LACP aggregation module, the second gateway device, and the public network gatewa...

Embodiment 3

[0072] The present invention will be described with a specific example scheme on the basis of Examples 1 and 2.

[0073] Example: Suppose there is a virtual network 192.168.1.0 / 24 at this time

[0074] Gateway: 192.168.1.1

[0075] vm1: 192.168.1.2

[0076] 1. The default gateway of vm1 is set to 192.168.1.1;

[0077] 2. When vm1 needs to access the external network, it needs to pass the data packet to the gateway. At this time, it needs to know the mac address of the gateway;

[0078] 3. vm1 sends an arp request to learn the gateway address;

[0079] 4. The Arp request is allocated to the first gateway device by the switch;

[0080] 5. After receiving the arp request, the first gateway device records the ip and mac of vm1 to the local arp table, and replies arp to vm1;

[0081] 6. Send the newly learned ip and mac to the device on the right;

[0082] 7. The device on the right receives the arp synchronization and records the ip and mac to the local arp table.

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Abstract

The invention discloses a gateway redundancy method and a system. The method comprises the steps that first gateway equipment receives and extracts a source IP and a source mac of an ARP message; searching whether the source IP of the ARP message exists in all arp records in the first local ARP table or not; if the ARP message does not exist, adding an arp record into the first local ARP table, and adding the source IP and the source mac of the ARP message into the arp record; if the ARP message source mac exists in the ARP record, checking whether a mac address the same as the ARP message source mac exists in the ARP record or not, and if not, replacing the mac address of the ARP record with the ARP message source mac; and if the BFD state between the first gateway equipment and the second gateway equipment is an active state, sending the newly added arp record or the arp record with the mac address replaced to the second gateway equipment. According to the invention, the ARP messageinformation is synchronized in real time, and the ARP tables between the equipment are kept the same.

Description

Technical field [0001] The invention relates to the technical field of gateway redundancy, in particular to a gateway redundancy method and system. Background technique [0002] The popularity of the Internet and the wave of cloud computing make us more and more inseparable from the network environment. With the rapid development of mobile Internet, various applications and services emerge in an endless stream. Application developers and service providers need to implement their projects or products quickly. In traditional IDC data centers, they generally need to deploy their own server equipment or rent others Server equipment, and you also need to build a complex network by yourself, which must take a lot of time and the process is very error-prone, and it is not easy to expand and implement disaster recovery. [0003] In a classic network, users actually lack network management capabilities on the cloud. The user has a virtual server on the classic network, and the user only ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12H04L12/24
CPCH04L41/0663H04L41/0846H04L61/103
Inventor 梁润强史伟闵宇
Owner GUANGDONG EFLYCLOUD COMPUTING CO LTD
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