CN102215165A - Message processing method for tangent ring networks and Ethernet switch - Google Patents
Message processing method for tangent ring networks and Ethernet switch Download PDFInfo
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- CN102215165A CN102215165A CN2011101396055A CN201110139605A CN102215165A CN 102215165 A CN102215165 A CN 102215165A CN 2011101396055 A CN2011101396055 A CN 2011101396055A CN 201110139605 A CN201110139605 A CN 201110139605A CN 102215165 A CN102215165 A CN 102215165A
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Abstract
The invention provides a data processing method for tangent ring networks, which is applied to tangent nodes of the tangent ring networks. The same service virtual local area network (VLAN) and the same control VLAN are configured to more than two Ethernet ring networks. The tangent nodes comprise first and second groups of on-ring ports positioned on the first and second Ethernet ring networks. The method comprises the following steps of: when a control message transmitted by a certain ring network is received from a certain on-ring port of a certain group of on-ring ports, transmitting the control message from another on-ring port of the group of on-ring ports; and when a known unicast Ethernet service message is received from any one on-ring port, searching for a media access control (MAC) address forwarding table entry in the tangent nodes to forward the service message. By the method, the tangent ring networks can support layer 2 networking application, and more flexible networking choices can be provided for a user.
Description
Technical field
The present invention relates to ethernet technology, relate in particular to a kind of ethernet ring network technology.
Background technology
Ethernet is popular double layer network technology, and it is widely used among the network of enterprise network and operator.The mechanism that Ethernet adopts source address learning guide message to transmit is handled for the mode that the message of destination address the unknown is broadcasted in broadcast domain.The technology of VLAN (VLAN) can be dwindled broadcast domain.Yet nonetheless, in a broadcast domain, still need to prevent the generation of broadcast storm.Spanning-Tree Protocol (STP) is a kind of common technology that prevents the Ethernet broadcast storm, however the convergence time of Spanning-Tree Protocol and its limitation part is still arranged for protection professional on the network.For this reason, industry develops and various ethernet ring network technology.The ethernet ring network technology by normally/malfunction under the port of some node of obstruction/opening reach the protection that broadcast storm suppresses and provide simultaneously forward-path on the network.
FRRP (Fast Ring Recovery Protocol, fast looped network recovers agreement) be the link layer protocol that is specifically applied to Ethernet ring, it can prevent the network storm that data loopback causes when Ethernet ring is complete, can start backup link again fast to guarantee the largest connected property of Ethernet ring when link failure.FRRP provides the convergence rate faster than STP again when realizing link load sharing.Ethernet ring network can be divided into as shown in Figure 1 three types according to topology.Other Ethernet articulating topologys can be considered as being made up of above three kinds of basic topologys.
Please refer to Fig. 2, tangent rings refers to has only a common node between two rings, need be at each different FRRP territory of ring configuration in the prior art.Four equipment among Fig. 2 on the ring 1 all are configured to belong to territory 1, have identical control VLAN and protection VLAN in territory 1.Device A is configured to encircle 1 host node, and other are transmission node; And three equipment that encircle on 2 are configured to belong to territory 2, have identical control VLAN and protection VLAN in territory 2, and Device E is a host node, and other are transmission node.So, can realize that to the ring in ring in the territory 1 and the territory 2 loop of looped network stops and the fast quick-recovery of link failure respectively.Yet still have certain weak point in the above-mentioned networking plan: the intercommunication of the appliance services in two territories must be provided with VLAN Interface by the equipment on the ring joining, could realize intercommunication at three layers, that is to say between two rings and can't directly carry out double layer intercommunication.Owing to can't directly carry out double layer intercommunication, the network plannings such as user's VLAN will be subjected to bigger restriction.
Summary of the invention
Can't provide the tangent looped network defective that two layers of networking are used in order to solve prior art, the invention provides a kind of message processing method of tangent looped network, it is applied on the tangent node of tangent looped network, wherein said tangent looped network comprises two first and second tangent ethernet ring networks, dispose identical service VLAN and control VLAN on two ethernet ring networks, described tangent node comprises that first and second groups of ring upper port that lay respectively on first and second ethernet ring network are positioned at; Wherein, this comprises:
A when receiving from control message that first looped network sends over from certain ring upper port of first group of ring upper port, encircles upper port with this control message another from first group of ring upper port and sends;
B when receiving from control message that second looped network sends over from certain ring upper port of second group of ring upper port, encircles upper port with this control message another from second group of ring upper port and sends;
C, searches the mac address forwarding table item of tangent intranodal this service message is transmitted when receiving known unicast Ethernet service message from any one ring upper port.
Preferably, also comprise:
D, when any one ring upper port received unknown unicast or broadcasting Ethernet service message, all ring upper port were broadcasted away this Ethernet service message by other.
Preferably, also comprise: detect certain ring upper port UP or Down incident, report this incident with the host node of form in affiliated ethernet ring network of control message by another ring upper port in the ring upper port group.
Preferably, also comprise: be used to receive the user and send the switching command that switches to crossing characteristic, and respective enable intersects the processing capacity module of characteristic to this node.
The present invention also provides a kind of Ethernet switch, it is applied in the tangent looped network as tangent node, wherein said tangent looped network comprises two first and second tangent ethernet ring networks, dispose identical service VLAN and control VLAN on two ethernet ring networks, described tangent node comprises that first and second groups of ring upper port that lay respectively on first and second ethernet ring network are positioned at; It is characterized in that this Ethernet switch comprises:
The control message process unit when being used for receiving from control message that first looped network sends over from certain ring upper port of first group of ring upper port, being encircled upper port with this control message another from first group of ring upper port and is sent; When perhaps receiving from control message that second looped network sends over, this control message another from second group of ring upper port encircled upper port send from certain ring upper port of second group of ring upper port; And
The service message processing unit is used for, searching the mac address forwarding table item of tangent intranodal this service message being transmitted when receiving known unicast Ethernet service message from any one ring upper port.
Preferably, described service message processing unit is further used for when any one ring upper port receives unknown unicast or broadcasting Ethernet service message, and all ring upper port are broadcasted away this Ethernet service message by other.
Preferably, the control message process unit is further used for when detecting certain ring upper port UP or Down incident, reports this incident by another ring upper port in the ring upper port group with the host node of form in affiliated ethernet ring network of control message.
Preferably, also comprise: the management auxiliary unit, is used to receive the user and sends the switching command that switches to crossing characteristic to this node, and respective enable intersects the processing capacity module of characteristic.
Description of drawings
Fig. 1 is the various typical networking diagram of existing Ethernet looped network.
Fig. 2 is the networking diagram of the tangent looped network of existing a kind of typical ether.
Fig. 3 is the networking diagram of the tangent looped network of the present invention.
Fig. 4 is the message process chart of the tangent node of the present invention.
Fig. 5 is the building-block of logic of the present invention as the Ethernet switch of tangent node.
Fig. 6 is the networking diagram of typical many ring intersecting ring network.
Embodiment
Considering to provide more two layers of networking of tangent rings to use in the application of present tangent looped network, the present invention sets about addressing the above problem from the Ethernet switch characteristic, and considers compatible existing intersecting ring network devices needed characteristic on the basis of dealing with problems.
Please refer to the networking diagram of a kind of typical tangent looped network of the present invention of Fig. 3, each node is Ethernet switch.Node ABCD constitutes first ethernet ring network, and Node B EF constitutes second ethernet ring network, and wherein Node B is the tangent node of two looped networks.In application scenarios of the present invention, dispose identical service VLAN (being also referred to as protection VLAN) and control VLAN on two ethernet ring networks.Node D comprises first and second groups of ring upper port that lay respectively on first and second ethernet ring network as tangent node.
Need to prove in the application of looped network, the notion in territory is all arranged at present as stated in the Background Art, different territory correspondences different service VLAN and different control VLAN.That is to say that different territories means different logical cyclic ring networks, looped network can be divided into a plurality of territories and form looped network on a plurality of logical meanings, just looks like that LAN is the same with VLAN, and it is self-explantory to those skilled in the art.Therefore the present invention all is suitable for the looped network on logical meaning and the physical significance, and unless otherwise noted, ethernet ring network of the present invention is not limited to the looped network of physical significance.
Please refer to the flow chart of Fig. 3 and the building-block of logic of Fig. 4 switch.In the application scenarios of Fig. 2.Node D is the key of all processing, does not need other node correspondences to make any change.The processing of node D mainly may further comprise the steps:
More than two steps be responsible for processing by the control message process unit among Fig. 3 11.Specifically, the control message can be divided into many types according to event type, goes up link disconnection/recovery (Link Up/Down) incident of other node reports such as ring; Perhaps come the various list items of autonomous node incident such as to empty, delete or refresh; Perhaps typical ring go up each host node (such as the Node B of first ring or the node E of second ring) send be used for switching fast hello packet.The most important effect of control message is to prevent to broadcast the generation of loop and maximum service message forward-path integrality is provided.Because the VLAN of the control message of two looped networks is identical, so message may transmit by the transannular net, may cause the host node of next door looped network to make fault processing like this.Such as, if first certain node Down of ring falls, this can cause the secondary port of host node can't receive the hello packet that the host node master port sends from ring, in this case, host node should be done opening action on secondary port, allow the interior message of service VLAN by (be to block service VLAN under the initial situation, allow the message in the control VLAN to pass through).If come up but the hello packet of the second ring host node is passed to first ring, the secondary port of the host node of first ring can be received hello packet, the secondary port error ground of the host node that encircle this moment first thinks that any fault does not take place first ring, can not do opening action, the forfeiture of forward-path integrality, therefore the forwarding of service message will be interrupted.
Just because of this, the present invention need be that unit handles especially to the control message according to ring upper port group.A kind of preferred mode can will be controlled message up sending by the mode of ACL and handle to CPU, and the transmission that will control message by the software processes on the CPU strictly is controlled in the port group.Receive the control message that first looped network is come such as node D from a ring upper port, will transmit by another looped network upper port of first looped network.So the control message of each looped network will be constrained within this looped network.Though situation shown in Figure 1 is that two rings are tangent, it is evident that the present invention can support that more rings are tangent, transmits because tangent node of the present invention can be controlled at the control message of each looped network in this ring.
Furthermore, please refer to the tangent node of step 104 self also may need to produce the control message, and such as the some ring upper port UP/Down in the ring upper port group, such incident need be reported to host node by the control message.After host node is received this incident, need open the secondary port of self, could guarantee professional forward-path complete of looped network like this, prevent professional interruption.In general, host node may also can send the last node of other rings of control message requirement at this moment and refresh list item, because the UP/Down of port has changed forward-path, so each node control message that need send according to host node is done corresponding refresh activity to self forwarding-table item.
Please further with reference to figure 4, a kind of typical intersecting ring network, under this application scenarios, the switch of crossed node is supported the edge port characteristic, this characteristic mainly is in order to stop the formation of 8 word loops.For the application of this intersecting ring network of compatibility, on Ethernet switch of the present invention, also can implant this edge port characteristic, support complicated intersecting ring network to use.The management auxiliary unit that provides Ethernet switch of the present invention realizes the compatibility to this characteristic.Please refer to the step 101 among Fig. 2, receive the switching command that the user sends, if the user wishes that this switch applied scene is two layers a tangent looped network, then it sends the switching command that switches to tangent characteristic to switch, behind the switching command that management auxiliary unit reception user sends, the tangent characteristic functions module that corresponding unlatching the present invention is above-mentioned, the handling process that enters step 102-106.On the contrary, if the user wishes that this switch applied scene is that intersecting ring network is used, then need to send to switch and switch to the switching command that intersects characteristic, the management auxiliary unit receives switching command that the user sends has respective enable then to intersect the processing capacity module of characteristic.Crossing characteristic is meant in a plurality of intersecting ring network networking scenarios, enables the function of typical fringe node as the switch of crossed node, to prevent the generation of 8 word forward-path loops.
Please refer to Fig. 4, if the link between device A and the equipment B disconnects, link between equipment C and the equipment D also disconnects, subring CDE and subring CDF can detect ring simultaneously so fault, in this case, the host node equipment F of the host node equipment E of subring CDE and subring CDF can decontrol their secondary port, and they are placed forwarding state.Like this, will form 8 word loops as red line mark among the figure.
In order to solve the problem of 8 word loops under this dual-homed subring, require two ports regularly the transmission Edgehello message of fringe node C in main ring.If assistant edge node D has received this Edgehello message in the given time, illustrated that it is intact so that subring is in good working condition that main ring ABDC has a link at least; If assistant edge node D does not receive this Edgehello message in the given time, link that the main ring both sides have been described is fault all, subring this moment has not been a good working condition, assistant edge node D can send the Majorfail message to two edge ports (port one and port 2), if fringe node C has received this Majorfail message, will block its edge port (being positioned at port one and port 2 on the ring).Then, the host node E of subring CDE and the host node F of subring CDF can each oneself hello packet can be changed to forwarding state with their secondary port because can not receive them in the time of appointment, but can not form 8 word loops because the edge port of fringe node C blocks this moment.About intersecting the more detailed description of characteristic, those of ordinary skills can be with reference to the realization of prior art.
The present invention has realized two layers of networking form of the tangent looped network of Ethernet by the processing to the control message; Provide network construction form more flexibly to the user.By the management aid in treatment, realized compatible processing simultaneously to existing characteristic.Described above only is the preferable implementation of the present invention, and in order to limit protection scope of the present invention, any variation that is equal to and modification all should not be encompassed within protection scope of the present invention.
Claims (8)
1. the message processing method of a tangent looped network, it is applied on the tangent node of tangent looped network, wherein said tangent looped network comprises two first and second tangent ethernet ring networks, dispose identical service VLAN and control VLAN on two ethernet ring networks, described tangent node comprises that first and second groups of ring upper port that lay respectively on first and second ethernet ring network are positioned at; It is characterized in that this comprises:
A when receiving from control message that first looped network sends over from certain ring upper port of first group of ring upper port, encircles upper port with this control message another from first group of ring upper port and sends;
B when receiving from control message that second looped network sends over from certain ring upper port of second group of ring upper port, encircles upper port with this control message another from second group of ring upper port and sends;
C, searches the mac address forwarding table item of tangent intranodal this service message is transmitted when receiving known unicast Ethernet service message from any one ring upper port.
2. method according to claim 1 is characterized in that, also comprises:
D, when any one ring upper port received unknown unicast or broadcasting Ethernet service message, all ring upper port were broadcasted away this Ethernet service message by other.
3. method according to claim 1 is characterized in that, also comprises:
E detects certain ring upper port UP or Down incident, reports this incident by another ring upper port in the ring upper port group with the host node of form in affiliated ethernet ring network of control message.
4. method according to claim 1 is characterized in that, also comprises:
F is used to receive the user and sends the switching command that switches to crossing characteristic to this node, and respective enable intersects the processing capacity module of characteristic.
5. Ethernet switch, it is applied in the tangent looped network as tangent node, wherein said tangent looped network comprises two first and second tangent ethernet ring networks, dispose identical service VLAN and control VLAN on two ethernet ring networks, described tangent node comprises that first and second groups of ring upper port that lay respectively on first and second ethernet ring network are positioned at; It is characterized in that this Ethernet switch comprises:
The control message process unit when being used for receiving from control message that first looped network sends over from certain ring upper port of first group of ring upper port, being encircled upper port with this control message another from first group of ring upper port and is sent; When perhaps receiving from control message that second looped network sends over, this control message another from second group of ring upper port encircled upper port send from certain ring upper port of second group of ring upper port; And
The service message processing unit is used for, searching the mac address forwarding table item of tangent intranodal this service message being transmitted when receiving known unicast Ethernet service message from any one ring upper port.
6. Ethernet switch according to claim 5, it is characterized in that, described service message processing unit is further used for when any one ring upper port receives unknown unicast or broadcasting Ethernet service message, and all ring upper port are broadcasted away this Ethernet service message by other.
7. Ethernet switch according to claim 5, the control message process unit, be further used for when detecting certain ring upper port UP or Down incident, report this incident with the host node of form in affiliated ethernet ring network of control message by another ring upper port in the ring upper port group.
8. Ethernet switch according to claim 5 is characterized in that, also comprises: the management auxiliary unit, is used to receive the user and sends the switching command that switches to crossing characteristic to switch, and respective enable intersects the processing capacity module of characteristic.
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| CN103684967B (en) * | 2013-12-13 | 2017-02-15 | 杭州华三通信技术有限公司 | Method and device for achieving tangent ring user data message intercommunication |
| CN108574648A (en) * | 2018-02-27 | 2018-09-25 | 上海兆越通讯技术有限公司 | A kind of industrial ethernet switch |
| CN111555916A (en) * | 2020-04-26 | 2020-08-18 | 杭州迪普科技股份有限公司 | Method, device, storage medium and equipment for deploying looped network |
| CN113055260A (en) * | 2021-02-20 | 2021-06-29 | 北京航天自动控制研究所 | Method and device for mixed communication of ring topology and switch |
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Address after: 310000 Binjiang District, Hangzhou, Binjiang Avenue, No. Huarong Times Building, room 1601, room 3880 Patentee after: Hangzhou Dipu Polytron Technologies Inc Address before: 310000 Binjiang District, Hangzhou, Binjiang Avenue, No. Huarong Times Building, room 1601, room 3880 Patentee before: Hangzhou Dipu Technology Co., Ltd. |
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