CN105281936B - A kind of network structure for realizing loop network link backup based on more ethernet ring networks - Google Patents

A kind of network structure for realizing loop network link backup based on more ethernet ring networks Download PDF

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CN105281936B
CN105281936B CN201410322771.2A CN201410322771A CN105281936B CN 105281936 B CN105281936 B CN 105281936B CN 201410322771 A CN201410322771 A CN 201410322771A CN 105281936 B CN105281936 B CN 105281936B
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node
port
edge
network
link
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CN105281936A (en
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汪革
苟利平
童文星
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SHANGHAI BAUD DATA COMMUNICATION CO Ltd
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SHANGHAI BAUD DATA COMMUNICATION CO Ltd
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Abstract

The invention discloses a kind of network structures that loop network link backup is realized based on more ethernet ring networks; the network structure is supplemented with a kind of Single-ring network and the insurmountable network topology protection scheme of multi-ring network; by being configured to main ring chain road interdependent node and/or port, and so as to form corresponding backup link.The technology of present invention MEAPS, to complete to back up EAPS loop network link, to provide a kind of more safely and effectively network environment.

Description

A kind of network structure for realizing loop network link backup based on more ethernet ring networks
Technical field
The present invention relates to a kind of network communication technologies, and in particular to the control technology of broadcast storm in a kind of network communication.
Background technique
It is the link layer protocol for being specifically applied to Ethernet ring that Ethernet Circle, which protects agreement (EAPS),.In Ethernet Ring should prevent broadcast storm caused by data loopback when complete, and when a link disconnects on Ethernet ring, it should enable rapidly Backup link is to restore the communication path on looped network between each node.The role of interchanger is specified by configuring by user.
More Ethernet Circle protections agreement (MEAPS) support common monocycle or second level multi-ring network on the basis of EAPS Network framework: centre is convergence layer, is mainly constructed between convergence device by ethernet ring network, realization is switched fast;Outside is Access layer is mainly used between access device.Looped network not at the same level is mainly connected using tangent or intersection mode.
One simple MEAPS structure as shown in Figure 1, by obstruction main ring host node and subring host node secondary port, To prevent caused broadcast storm in looped network.Subring by fringe node (Edge) and assistant edge node (Assistant) come It is linked into main ring, fringe node sends edge-hello message by main ring chain road direction assistant edge node, to monitor edge The connectivity of link between node and assistant edge node, when link is obstructed between Edge node and assistant edge node, at this time Block the edge port (port for being connected to subring) of assistant edge node, to prevent network structure (such as Fig. 2 of dual-homed ring It is shown).
As described above, the control of MEAPS subring broadcast storm, at least needs 1 node to be configured to subring in subring Host node;It is the generation that can not prevent broadcast storm according to the mechanism of MEAPS if there is no node in subring.
In response to this, a solution is provided to prevent this kind of network topology from generating broadcast storm, is ability The problem of field technique personnel's urgent need to resolve.
Summary of the invention
The present invention, which is directed in the existing network communication technology, can not prevent subring from generating broadcast storm without the network topology of node The problem of, it is intended that a kind of network structure solution that loop network link backup is realized based on more ethernet ring networks is provided, To supplement safety management and control to various network topology structure, thus, it is possible to prevent network topology generation of the subring without node Broadcast storm, to provide a kind of more safely and effectively network environment.
In order to achieve the above object, the present invention adopts the following technical scheme that:
A kind of network structure for realizing loop network link backup based on more ethernet ring networks, by main ring chain road in the network structure 2 nodes without node subring are connected, Edge node and assistant edge node is configured to based on MEAPS, and by the end of connection Mouth is configured to edge port, thus no node subring is configured to a backup link of main ring chain road;
And under normal circumstances, block the edge port of assistant edge node;When Edge node and assistant edge node it Between 2 links all break down, at this time restore backup link obstruction port, carry out looped network switch, to guarantee network just Often operation.
In the preferred embodiment of this programme, the fringe node of main ring chain road is sent out by main ring port to assistant edge node Edge-hello probe messages are sent, to monitor the integrality of main ring;Assistant edge node receives edge-hello message, then blocks Its edge port;If can not receive edge-hello message within a certain period of time, then it is assumed that Edge node and assistant edge node Between 2 links all break down, restore its edge port.
For the above-mentioned network structure for realizing loop network link backup based on more ethernet ring networks, the present invention also provides other one Kind of alternative, in the network structure of the alternative, direct-connected 2 looped network nodes, respectively to their looped network port configuration one A backup port is that 2 direct-connected looped network nodes configure to form backup link by backup port;When normal port is link In the case where up, backup port is obstruction;When normal port becomes link down the case where, restore backup port, carries out ring Net is switched, to guarantee the normal operation of network.
It can prevent subring from generating broadcast storm without the network topology of node using above scheme, that is, giving common list Ring looped network has carried out link backup, is supplemented to be capable of providing the ring network structure of protection, to provide a kind of safer Effective network environment.
Detailed description of the invention
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Fig. 1 is simple MEAPS looped network protection structure;
The case where Fig. 2 is MEAPS looped network dual-homed generation broadcast storm;
Fig. 3 is the network structure example topology of solution in present example 1;
Fig. 4 is that network topological change example after failure occurs at 2 shown in Fig. 3 in example on main ring;
Fig. 5 is the network structure example topology of solution in present example 2;
Fig. 6 is network topological change example after breaking down in example shown in Fig. 5.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below Conjunction is specifically illustrating, and the present invention is further explained.
Example 1
The scheme that the example provides can effectively supplement in MEAPS network structure, and subnet does not have the case where node, makes subnet Becoming a backup link of main ring chain road, major programme is to connect 2 nodes of the subring without node on main ring, It to be configured to Edge node and assistant edge node as MEAPS, the port of connection is configured to edge port, thus will Subnet is configured to a backup link of main ring chain road;And under normal circumstances, block the edge port of assistant edge node; When 2 links between Edge node and assistant edge node all break down, restore the port of backup link obstruction at this time, into Row looped network is switched, to guarantee the normal operation of network.
Referring to Fig. 3 which shows what is formed based on the above principles is used to prevent subring from generating extensively without the network topology of node Broadcast the network structure example topology figure of storm solution.As seen from the figure, in the network structure topology of the solution, 6 sections Point is all the node on main ring, and interior joint 4 is configured to host node, and 2 looped network ports are each configured to master port and time end Mouthful, remaining node is configured to transmission node, and looped network port is each configured to transmission port.For backup link 1, node 1 and 3 adds Enter into subring 1, configuration node 1 is the fringe node of subring 1, and configuration node 3 is the assistant edge node of subring 1;Similar, For backup link 2, node 5 and 6 is added in subring 1, and configuration node 5 is the fringe node of subring 2, and configuration node 6 is son The assistant edge node of ring 2.
Under normal circumstances, the master port of host node sends hello packet on main ring, by each node on main ring, The secondary port for eventually passing back to host node, after secondary port receives hello packet, it is believed that looped network is completely, to hinder secondary port Plug prevents main ring from generating broadcast storm;Assistant edge node in subring (backup link) can receive fringe node and pass through master The edge-hello message that central link is sent blocks the edge port of assistant edge node, prevents subring (backup link) from occurring Broadcast storm.
When link failure occurs for subring (backup link), for main link without influence, network topology does not also change.Work as master When failure at one occurs for central link, main ring host node detects the event, then restores the obstruction of host node time port, carries out main ring Looped network switch, to maintain the normal operation of network;In that case, then failure at one has occurred in main ring, as shown in figure 4, It is sent out at this point, the assistant edge node (node 3) being connected with subring 1 (backup link 1) is not received from fringe node (node 1) The edge-hello message sent restores the obstruction of assistant edge node edge port, and the looped network for carrying out subring 1 is switched, to maintain The normal operation of network.
When failure (failure at one) on main ring is restored, assistant edge node (node 3) can be received again from edge section The edge-hello message that point (node 1) is sent blocks the edge port of assistant edge node to prevent broadcast storm; When failure is also restored at other one, the host node on main ring detects that looped network restores normal, blocks the secondary port of host node, to prevent Broadcast storm only occurs.
Example 2
The scheme that the example provides is by configuring one to their looped network port respectively to 2 direct-connected looped network nodes Backup port, then configured by backup port for 2 direct-connected looped network nodes and form backup link;
And in the case that normal port is link up, backup port is obstruction;When normal port becomes link The case where down, restores backup port, carries out looped network and switches, to guarantee the normal operation of network.
The arrangements that this example provides operate simpler in direct-connected node.
Referring to Fig. 5 which shows what is formed based on the above principles is used to prevent subring from generating extensively without the network topology of node Broadcast the network structure example topology figure of storm solution.As seen from the figure, in the network structure topology of the solution, 6 sections Point is all in looped network, and interior joint 4 is configured to host node, and 2 looped network ports are each configured to master port and time port;Its Remaining to be configured to transmission node, looped network port is each configured to transmission port.Node 2 and node 3 be it is direct-connected, give their ring respectively It nets port and configures a backup port, be 3 configuration backup link 1 of direct node 2 and node by backup port;Similarly, again It is configured with backup link 2 for node 5 and node 6, connects backup port of the port as generic link of backup link.
Under normal circumstances, the master port of host node sends hello packet on main ring, by each node on main ring, The secondary port for eventually passing back to host node, after secondary port receives hello packet, it is believed that looped network is completely, to hinder secondary port Plug prevents main ring from generating broadcast storm;The backup port of connection backup link is blocked, is prevented when common port is normal Broadcast storm occurs for subring (backup link).
As shown in fig. 6, restoring the obstruction to backup port, when the opposite normal link of backup link 1 breaks down It changes on loop network link to backup link, to maintain the normal operation of network;And working as on looped network does not have the link of backup link When failure, host node restores the obstruction of time port, carries out looped network and switches, to maintain the normal operation of network, and to other standby Part link does not have any association.
When the opposite normal link of backup link 1 carries out fault recovery, blocks backup port, switch loop network link to just Normal chain road;And when the link for not having backup link on looped network carries out fault recovery, the host node on main ring detects looped network Restore normal, blocks the secondary port of host node, to prevent broadcast storm.
In above-mentioned two example, the network instruction plan for the loop network link backup that example 2 provides be can be realized to direct-connected phase 2 adjacent nodes carry out link backup, and the network instruction plan for the loop network link backup that example 1 provides can be carried out with cross-node Link backup.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its Equivalent thereof.

Claims (2)

1. a kind of network structure for realizing loop network link backup based on more ethernet ring networks, which is characterized in that in the network structure By 2 nodes of the main ring chain road connection without node subring, Edge node and assistant edge node is configured to based on MEAPS, with And the port of connection is configured to edge port, thus no node subring is configured to a backup link of main ring chain road;
And under normal circumstances, block the edge port of assistant edge node;When 2 between Edge node and assistant edge node Link all breaks down, and restores the port of backup link obstruction at this time, carries out looped network and switches, to guarantee the normal fortune of network Row;
Under normal circumstances, the master port of host node sends hello packet on main ring, by each node on main ring, finally The secondary port for returning to host node, after secondary port receives hello packet, it is believed that looped network is completely, to block to secondary port, is prevented Only main ring generates broadcast storm;Assistant edge node in subring can receive what fringe node was sent by main ring link Edge-hello message blocks the edge port of assistant edge node, prevents subring from broadcast storm occurs.
2. described a kind of network structure for realizing loop network link backup based on more ethernet ring networks according to claim 1, feature It is, the fringe node of main ring chain road sends edge-hello probe messages to assistant edge node by main ring port, with Monitor the integrality of main ring;Assistant edge node receives edge-hello message, then blocks its edge port;If in a timing It is interior to can not receive edge-hello message, then it is assumed that 2 links between Edge node and assistant edge node all break down, Restore its edge port.
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CN101075935A (en) * 2007-06-27 2007-11-21 华为技术有限公司 Method, system and apparatus for realizing loop protection
CN101247306A (en) * 2008-03-13 2008-08-20 华为技术有限公司 Method for edge port block in ethernet ring, ethernet ring system and device
CN101631060A (en) * 2009-08-18 2010-01-20 杭州华三通信技术有限公司 Method and device for managing edge port
CN101656650A (en) * 2009-09-17 2010-02-24 杭州华三通信技术有限公司 Method and main link device for realizing automatic configuration of Ethernet ring
CN101771592A (en) * 2009-01-05 2010-07-07 迈普通信技术股份有限公司 Method for automatically configuring EAPS transmission nodes
CN103746912A (en) * 2014-01-03 2014-04-23 杭州华三通信技术有限公司 Data message transmission method and equipment based on subring link

Family Cites Families (1)

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Publication number Priority date Publication date Assignee Title
CN101640622B (en) * 2009-09-07 2012-05-23 中兴通讯股份有限公司 Ethernet ring net protection method and transit node

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1960310A (en) * 2006-11-01 2007-05-09 华为技术有限公司 Method and system of realizing rig network protection
CN101075935A (en) * 2007-06-27 2007-11-21 华为技术有限公司 Method, system and apparatus for realizing loop protection
CN101247306A (en) * 2008-03-13 2008-08-20 华为技术有限公司 Method for edge port block in ethernet ring, ethernet ring system and device
CN101771592A (en) * 2009-01-05 2010-07-07 迈普通信技术股份有限公司 Method for automatically configuring EAPS transmission nodes
CN101631060A (en) * 2009-08-18 2010-01-20 杭州华三通信技术有限公司 Method and device for managing edge port
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