Unlock instant, AI-driven research and patent intelligence for your innovation.

Link backup method and routing forwarding device

A link backup and main link technology, applied in the field of network communication, can solve the problems of inability to switch traffic and traffic loss, and achieve the effect of reducing risks, reducing traffic loss, and speeding up the speed.

Active Publication Date: 2015-03-18
XINHUASAN INFORMATION TECH CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the prior art, because the devices in the site need to wait for the aging of the ARP entries to perceive the failure of the public network link, the traffic cannot be quickly switched to the backup link, resulting in traffic loss

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Link backup method and routing forwarding device
  • Link backup method and routing forwarding device
  • Link backup method and routing forwarding device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] image 3 It is a network structure diagram of the EVI network in this embodiment. Such as image 3 As shown, two EDs, ED1 and ED2, are set up at site 1. Among them, CE1 and CE3 are connected to ED1, and CE2 and CE4 are connected to ED2. The EDs in this embodiment adopt a fully connected architecture, and ED1 and ED2 are respectively connected to remote sites 2 and 3 through tunnels. The edge device at Site 2 is ED3, and Server 3 is connected to it, and its MAC address is MAC3. The edge device at Site 3 is ED4, and Server 4 is connected to it, and its MAC address is MAC4. ED1 and ED2 belong to the same EVI instance. ED1 is the primary ED responsible for forwarding traffic from VLAN1 to VLAN10, and ED2 only monitors VLAN1 to VLAN10. At the same time, ED2 can also serve as the active ED responsible for traffic forwarding of VLAN11-VLAN20, and ED1 only monitors VLAN11-VLAN20. That is to say, the role of an ED as active or standby is determined by whether it undertakes...

Embodiment 2

[0061] Figure 4 It is a network structure diagram of the EVI network in this embodiment. Such as Figure 4 As shown, two EDs, ED1 and ED2, are set up at site 1. Among them, CE1 and CE3 are connected to ED1, and CE2 and CE4 are connected to ED2. The EDs in this embodiment adopt a fully connected architecture, and ED1 and ED2 are respectively connected to remote sites 2 and 3 through tunnels. The edge device at Site 2 is ED3, and Server 3 is connected to it, and its MAC address is MAC3. The edge device at Site 3 is ED4, and Server 4 is connected to it, and its MAC address is MAC4. ED1 and ED2 belong to the same EVI instance, ED1 is responsible for the traffic forwarding of VLAN1~VLAN10 as the primary ED, and ED2 only monitors VLAN1~VLAN10. At the same time, ED2 is responsible for traffic forwarding of VLAN11-VLAN20 as the active ED, and ED1 only monitors VLAN11-VLAN20.

[0062] In this embodiment, it is assumed that CE2 in VLAN11 accesses server 3 in site 2, and the traff...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a link backup method and a routing forwarding device, which are applied to realizing bi-layer intercommunication of networks at different sites based on a virtual link. The link backup method comprises the following steps: a main ED (edge device) informs user equipment (UE) of configured main backup information and is responsible for forwarding a specified virtual local area network (VLAN) flow from a main link; the VLAN flow is monitored by a standby ED; when the occurrence of a fault on a main link is confirmed, the main ED confirms the CE influenced by the fault from the CE under the specified VLAN, and informs the CE of flow switchover; and after monitoring the VLAN flow switched by the CE influenced by the fault, the standby ED forwards the flow from the standby link. With the adoption of the scheme of the invention, the CE does not need to wait for relearning after an ARP (address resolution protocol) item is aged and then trigger the switchover of the VLAN flow according to the relearned ARP information, but the CE is notified actively by the ED to carry out the flow switchover, so that the speed of the flow switchover is accelerated, and the risk of flow loss is reduced.

Description

technical field [0001] The present application relates to the technical field of network communication, in particular to a link backup method and routing and forwarding equipment. Background technique [0002] With the rapid development of the Internet (Internet), the geographical span of the network is getting larger and larger. In order to provide better services, users usually deploy several data centers in different places. Multiple data centers can be connected through Ethernet Virtual Interconnection (EVI) technology, and the Layer 2 interconnection between each site network can be realized based on virtual links. [0003] EVI technology divides the network into two parts: the core network (that is, the public network) and the site network (that is, the private network). The site accesses the public network through an edge device (ED). Tunnel connections can be established between EDs, and media access control (Media Access Control, MAC) learning and data transmissi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/70H04L12/46H04L12/24
Inventor 王伟杜宇王海
Owner XINHUASAN INFORMATION TECH CO LTD