CN101697525B - Looped network based configuration and data transmission method and system of address forwarding table - Google Patents
Looped network based configuration and data transmission method and system of address forwarding table Download PDFInfo
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Abstract
The invention discloses a looped network based configuration and data transmission method of an address forwarding table, comprising the following steps: searching whether a looped upper node of the looped network is connected with a subnetwork or not; only configuring an address forwarding table for the looped upper node connected with the subnetwork, wherein the configuring address forwarding table configuration comprises the following forwarding items: a subnetwork destination address of message transmission, a backbone network destination address of the message transmission, a backbone network virtual local area network identity passed by the message transmission and a forwarding port of the looped upper node; when data are transmitted and the looped upper node of the looped network receives a message from one looped upper port, reading the backbone network destination address of the message; and when the read backbone network destination address is different from a self address of the looped upper node, directly forwarding the message from another looped upper port of the looped upper node. The invention well solves the problem that the task of the address forwarding table configuration on the looped network is too heavy and also greatly increases the forwarding speed of the message and enhances the network property.
Description
Technical field
The present invention relates to network communications technology field, relate in particular to a kind of addresses forwarding table collocation method and data transmission method and system based on looped network.
Background technology
Along with the proposition of CE (Carrier Ethemet, carrier class Ethernet) notion, satisfy communication network demand and connection-oriented ethernet technology-PBT (Provider Backbone Transport, operator backbone transmits) and also emerge in October, 2005.After this, all there is operator to adopt the networking of PBT technology both at home and abroad, for the development of PBT technology in metropolitan area network provides the good beginning.
The basis of PBT technology is PBB (the Provider Backbone Bridge of IEEE 802.1ah definition; The operator backbone bridge joint) technology; IEEE calls PBB-TE (Provider Backbone Bridge Traffic Engineering, the operator backbone bridging technology of support traffic engineering) to the PBT technology.The PBB-TE technology is based on the PBB technology; Its core is that the PBB technology is improved; The source device of CE generally inserts B-DA (Backbone Destination MAC Address, backbone network target MAC (Media Access Control) address), B-SA (Backbone Source MAC Address, the source MAC of backbone network), B-VLAN (Backbone VLAN at the head of message; The backbone network VLAN) and I-TAG (Service Instance TAG, Service Instance mark).The backbone network VLAN that disposes in the above-mentioned message has determined source device to forward-path that destination device experienced.
In order to make Ethernet reach telecommunications rank standard, adopt resist technology during the PBB-TE transmission usually.Shown in Figure 1 is the sketch map of the end-to-end linear protection in Ethernet tunnel in the prior art; Wherein, The main end to end tunnel of certain traffic engineering Service Instance be TN1:PE1 ← → P1 ← → P2 ← → P3 ← → PE2; Wherein PE1 and PE2 are the end of this tunnel example, and P1～P3 is the intermediate node of this tunnel example.TN2:PE1 ← → P5 ← → P6 ← → PE2 is the end-to-end backup tunnel of this traffic engineering Service Instance.In order to distinguish above-mentioned main tunnel TN1 and backup tunnel TN2, be that main tunnel TN1 specifies backbone network VLAN B-VLAN1 when pre-configured, over run tunnel TN2 specifies another backbone network VLAN B-VLAN2.When main tunnel TN1 breaks down end to end, can data flow be switched on the backup tunnel TN2.The attribute in tunnel is to indicate through < DA, SA, VID>3 tuples, and wherein DA is the target MAC (Media Access Control) address of message, and SA is the source MAC of message, and VID is ID number of message place backbone network VLAN B-VLAN.More detailed content is referring to IEEE 802.1Qay standard.Above resist technology makes the ethernet ring network that ubiquity transmits based on PBB-TE in the Ethernet.
In ethernet ring network based on the PBB-TE transmission; Some ring is gone up node and is being connected a large amount of subnets; Therefore the target MAC (Media Access Control) address in the message comprises two layer address; Its ectomesoderm destination address is B-DA (Backbone Destination MAC Address, a backbone network target MAC (Media Access Control) address), and the internal layer destination address is the subnet target MAC (Media Access Control) address that node connected on the ring.The source device of CE is a static configuration in advance to forward-path between the various objectives equipment; Each ring is gone up node and all is provided with addresses forwarding table in advance, and institute's configured address is transmitted and comprised: the forwarding port of the subnet target MAC (Media Access Control) address of message transmissions, the backbone network VLAN ID that message transmissions experienced and message node on ring.After ring is gone up node and is received message, search addresses forwarding table and obtain the forwarding port that MAC Address, B-VLAN mated with message neutron mesh, message is transmitted the forward efficiency height from this forwardings port.
Therefore, for realize data in the tunnel transmission need be on the ring of all ethernet ring networks a large amount of static forwarding table of node configuration.Particularly many during to the shared ethernet ring network of user, the mode that this traditional static configuration is transmitted makes efficiency of transmission very low.In ethernet ring network; Node is being safeguarded a huge addresses forwarding table owing to connecting a large amount of subnets on the ring on each looped network; If transmit according to the conventional method static configuration; To directly bring two serious consequences, promptly heavy static configuration addresses forwarding table task and very long tabling look-up the time consuming time.As shown in Figure 2, each ring on the looped network is gone up node and has been connected 10000 sub-net.If all passing through a tunnel, each subnet gets into looped network; Each switching node will have been safeguarded a huge addresses forwarding table FDB (Forwarding Database) (as shown in table 1) so; This addresses forwarding table comprises a plurality of forwarding entrys, and each forwarding entry comprises: the forwarding port of the subnet target MAC (Media Access Control) address of message transmissions, the backbone network VLAN ID B-VID that message transmissions experienced and message node on ring.Because node configured in advance addresses forwarding table all makes that the quantity of the address forwarding entry in whole ethernet ring network is very big on all rings, can reach 10
10Individual magnitude quantity is individual.Each ring is gone up all needs inquire address to transmit after node receives message, makes efficiency of transmission very low.Therefore to make the configuration that static address transmits and rely on inquire address to transmit to transmit the ring message will be a very thing of difficulty to traditional addresses forwarding table collocation method.
Table 1 ring is gone up the addresses forwarding table of node D
Can find out that from top analysis it is very inappropriate that the addresses forwarding table collocation method in the ethernet ring network of traditional P BB-TE transmission applies on the looped network.Therefore, it is very significant proposing that a kind of new addresses forwarding table collocation method and corresponding Ethernet data transmission method dispose on ethernet ring network the PBB-TE technology fast.
Summary of the invention
The present invention provides a kind of addresses forwarding table collocation method and data transmission method and system based on looped network, exists addresses forwarding table configuration, inquiry to cause the low problem of efficiency of transmission in the prior art in order to solve.
The invention provides a kind of addresses forwarding table collocation method, comprising based on looped network:
Search whether node is connected with subnet on the ring of looped network;
Be merely node configuration addresses forwarding table on the ring that is connected with subnet, comprise the forwarding entry of following content during configuration address is transmitted: the subnet destination address of message transmissions, the backbone network destination address of message transmissions, backbone network VLAN ID that message transmissions experienced and the forwarding port of message node on this ring.
The present invention also provides a kind of data transmission method based on looped network, comprising:
When node on the ring of looped network when an one of which ring port receives message, read the backbone network destination address in the said message;
The address of node self directly forwards said message not simultaneously from another ring port of the last node of this ring on the backbone network destination address that is read and this ring;
When the address of node self is identical on the backbone network destination address that is read and this ring, carry out message ring operation down;
For node on the ring that is connected with subnet, execution message ring operation down comprises step:
During transmit the address of node on this ring, search with message in the forwarding port that mated of subnet destination address, backbone network destination address, backbone network VLAN ID;
From the forwarding port that inquires message is encircled the subnet that is forwarded to correspondence down;
Wherein, the addresses forwarding table of said looped network disposes according to following method:
Search whether node is connected with subnet on the ring of looped network;
Be merely node configuration addresses forwarding table on the ring that is connected with subnet, comprise the forwarding entry of following content during configuration address is transmitted: the subnet destination address of message transmissions, the backbone network destination address of message transmissions, backbone network VLAN ID that message transmissions experienced and the forwarding port of message node on this ring.
The present invention also provides a kind of addresses forwarding table configuration-system based on looped network, comprising:
Search the unit, be used to search whether node is connected with subnet on the ring of looped network;
Dispensing unit; Be used to be merely node configuration addresses forwarding table on the ring that is connected with subnet, comprise the forwarding entry of following content during configuration address is transmitted: the subnet destination address of message transmissions, the backbone network destination address of message transmissions, backbone network VLAN ID that message transmissions experienced and the forwarding port of message node on this ring.
The present invention also provides a kind of data transmission system based on looped network, comprising:
Outer destination address reading unit is used at node on the ring of looped network reading the backbone network destination address in the said message when one of which encircles a port and receives message;
Retransmission unit on the ring, the address that is used for node self on backbone network destination address that said outer destination address reading unit is read and this ring directly forward said message not simultaneously from another ring port that this ring is gone up node;
Under encircle performance element, be used for the address of node self on backbone network destination address that said outer destination address reading unit is read and this ring when identical, carry out message ring operation down;
The said performance element of ring down specifically comprises:
First lookup unit; The address that is used for node self on backbone network destination address that said outer destination address reading unit is read and this ring is identical; And when the last node of this ring is connected with subnet; During transmit the address of node on this ring, search with message in the forwarding port that mated of subnet destination address, backbone network destination address, backbone network VLAN ID;
Under encircle retransmission unit, from the forwarding port that inquires with message down ring be forwarded to corresponding subnet;
Wherein, the addresses forwarding table of said looped network is configured by the addresses forwarding table configuration-system based on looped network, and said addresses forwarding table configuration-system based on looped network comprises:
Search the unit, be used to search whether node is connected with subnet on the ring of looped network;
Dispensing unit; Be used to be merely node configuration addresses forwarding table on the ring that is connected with subnet, comprise the forwarding entry of following content during configuration address is transmitted: the subnet destination address of message transmissions, the backbone network destination address of message transmissions, backbone network VLAN ID that message transmissions experienced and the forwarding port of message node on this ring.
Utilize addresses forwarding table collocation method and data transmission method and the system based on looped network provided by the invention; Has following beneficial effect: solved PBB-TE technology configuration address on looped network well and transmitted the too heavy problem of task; Simultaneously also greatly improve packet forwarding speed, greatly improved network performance.
Description of drawings
Fig. 1 is the schematic diagram of protecting tunnel end to end of available technology adopting PBB-TE transmission;
Fig. 2 is the sketch map that a plurality of subnets insert looped network in the prior art;
Fig. 3 is based on the addresses forwarding table collocation method flow chart of looped network in the embodiment of the invention;
Fig. 4 is based on the data transmission method flow chart of looped network in the embodiment of the invention;
Fig. 5 is the looped network connection layout of example shown in the embodiment of the invention;
Fig. 6 is based on the data transmission system structure chart of looped network in the embodiment of the invention.
Embodiment
The present invention is in order to solve the drawback that conventional solution exists; Further set forth addresses forwarding table collocation method and data transmission method and system based on looped network of the present invention through following specific embodiment; Below embodiment is described in detail, but not as to qualification of the present invention.
According to embodiments of the invention one, a kind of addresses forwarding table collocation method based on looped network is provided, as shown in Figure 3, comprise step: S301, take out on the looped network node on the pre-configured ring; S302 searches whether node is connected with subnet on this pre-configured ring, is connected with subnet, execution in step S303, otherwise execution in step S304 if this ring is gone up node; S303; For this ring is gone up the node configuration addresses forwarding table; The forwarding entry that comprises following content during configuration address is transmitted: the subnet destination address of message transmissions, the backbone network destination address of message transmissions, backbone network VLAN ID that message transmissions experienced and the forwarding port of message node on this ring; Identify this looped network node for accomplishing the looped network node of configuration; Take out node on the ring next pre-configured on the looped network, return step S302 and carry out the addresses forwarding table configuration for node on the next pre-configured ring; S304 does not go up node to this ring and carries out the addresses forwarding table configuration, takes out node on the ring next pre-configured on the looped network, returns step S302 and carries out the addresses forwarding table configuration for node on next pre-configured ring.Therefore; Be merely node configuration addresses forwarding table on the ring that is connected with subnet in the looped network in the present embodiment; For node on the ring that is not connected with subnet, do not carry out the addresses forwarding table configuration, like this; Can significantly reduce the quantity of addresses forwarding table, tabling look-up the time in the time of can reducing setup time and transfer of data.
On transfer of data; The principle of carrying out the addresses forwarding table configuration for node on the ring of looped network is: 1) message such as the PBB-TE data flow on ring, transmitted are not carried out the static configuration forwarding entry; As do not connect that node only utilizes the ring port to carry out data forwarding on the ring of subnet; Therefore, the present invention utilizes looped network transfer of data characteristics no longer to be its configuration forwarding entry; 2) only the message such as the PBB-TE data flow of last ring is configured forwarding entry.Node is when being connected with on the ring of subnet node on ring, also needs be configured forwarding entry to the message of ring down, just has ring and ring message transmissions down owing to be connected with on the ring of subnet node, therefore encircles upward node configuration forwarding entry for this type of.Above-mentioned each forwarding entry comprises the subnet target MAC (Media Access Control) address of message transmissions, the backbone network target MAC (Media Access Control) address B-DA of message transmissions, backbone network VLAN ID B-VID and the corresponding forwarding port that message transmissions experienced.Present embodiment has increased backbone network MAC Address B-DA at forwarding entry, directly transmits when being convenient to subsequent data transmission and uses, and is different from only to configure the corresponding forwarding entry of subnet destination address in the prior art in the addresses forwarding table.For node on the ring that is connected with subnet, the subnet destination address in the forwarding entry comprises the upward first subnet destination address of going up the ring message transmissions of node of ring, reaches the upward second subnet destination address of the following ring message transmissions of node of ring.
The addresses forwarding table configuration-system based on looped network that is provided in the present embodiment comprises: search the unit, be used to search whether node is connected with subnet on the ring of looped network; Dispensing unit; Be used to be merely node configuration addresses forwarding table on the ring that is connected with subnet, comprise the forwarding entry of following content during configuration address is transmitted: the subnet destination address of message transmissions, the backbone network destination address of message transmissions, backbone network VLAN ID that message transmissions experienced and the forwarding port of message node on this ring.
According to embodiments of the invention two, a kind of data transmission method based on looped network is provided, as shown in Figure 4, the method comprising the steps of:
S401, when node on the ring of looped network when an one of which ring port receives message such as PBB-TE data message, read the backbone network target MAC (Media Access Control) address B-DA in the said message;
S402, whether the B-DA in the message that judgement is read is identical with the MAC Address that this ring is gone up node self, if different, execution in step S403, otherwise change step S404 over to;
S403 directly forwards said message from another ring port of the last node of this ring.
S404, this ring go up node and carry out message ring operation down.
The data transmission method that is provided in the present embodiment based on looped network; Through message ectomesoderm destination address is backbone network target MAC (Media Access Control) address B-DA; Judge that ring goes up whether the message that node receives was that ring E-Packets,, also no longer carry out the addresses forwarding table inquiry for the message data of the crossing ring internal layer destination address in the query message no longer; And the message data that directly will cross ring forwards; And be different from the prior art all messages two-layer destination address in the query message and all need inquire address to transmit all, saved the time of tabling look-up, improve message transferring speed.In conjunction with the addresses forwarding table collocation method that is provided in the embodiment of the invention, behind pre-configured addresses forwarding table, when ring is operated under carrying out,, transmit down the ring operation through inquire address for node on the ring that is connected with subnet.Concrete steps comprise: during transmit the address of node on this ring, search with message in the forwarding port that mated of subnet target MAC (Media Access Control) address, backbone network target MAC (Media Access Control) address B-DA, backbone network VLAN ID B-VID; From the forwarding port that inquires message is encircled the subnet that is forwarded to correspondence down.
In order to realize the ring message transmissions; Method in the embodiment of the invention also comprises: when node on the ring that is connected with subnet from its ring lower port when receiving message; During transmit the address of node on this ring, search with message in the forwarding port that mated of subnet target MAC (Media Access Control) address, backbone network target MAC (Media Access Control) address B-DA, backbone network VLAN ID B-VID; From the forwarding port that inquires the message ring being forwarded to looped network transmits.
Be that the example explanation utilizes the data transmission procedure in the embodiment of the invention with a simple looped network below, as shown in Figure 5, node has A, B, C, D, E and F on the ring that looped network comprises, and the link that comprises in the looped network has < A; B >, < B, C >, < C, D >, < D; E >, < E, F>and < E, A>link.Node A, B and D have been connected node on the ring of 10000 sub-net respectively on the ring, and node C, E and F are not connected with subnet on the ring.Therefore only carry out the addresses forwarding table configuration according to method of the present invention to encircling node A, B and D; Forwarding entry reached the second subnet destination address of ring message down according to the first subnet destination address of last ring message during institute's configured address was transmitted; Only comprise the ring forwarding entry and encircle forwarding entry down, each forwarding entry comprises: the forwarding port that the subnet target MAC (Media Access Control) address of message transmissions, the backbone network target MAC (Media Access Control) address B-DA of message transmissions and the backbone network VLAN ID B-VID that message transmissions is experienced are mated.Be respectively the addresses forwarding table that ring is gone up node A, B and D like table 2, table 3 and table 4.Concerning encircling node A, its ring port is a1 and a2, and the ring lower port is a3; Concerning encircling Node B, its ring port is b1 and b2, and the ring lower port is b3; Concerning encircling node D, its ring port is d1 and d2, and the ring lower port is d3.Above-mentioned ring port is used to encircle the transmission of message, and the ring lower port is used to encircle ring message transmissions or following ring message transmissions on the node.Node F, E and C on the ring only contain the ring port owing to be not connected with subnet, according to method of the present invention, need not carry out the addresses forwarding table configuration to it, so their addresses forwarding table do not include any forwarding entry for sky.
Table 2 ring is gone up the addresses forwarding table of node A
Table 3 ring is gone up the addresses forwarding table of Node B
Table 4 ring is gone up the addresses forwarding table of node D
On virtual LAN VLAN 6, be that example is explained practical implementation process of the present invention with subnet B0 below to the subnet D0 literary composition that sends datagram.
After Node B is received the message P of subnet B0 transmission on the ring; Utilize < VLAN6; D>message P is encapsulated; Then according to the subnet target MAC (Media Access Control) address in the message, backbone network target MAC (Media Access Control) address B-DA, backbone network VLAN ID B-VID, on ring in the addresses forwarding table 3 of Node B, search with message in the forwarding port b1 that mated of subnet target MAC (Media Access Control) address, backbone network target MAC (Media Access Control) address B-DA, backbone network VLAN ID B-VID; From the forwarding port b1 that inquires message is forwarded; After node C receives data message P from its ring port c2, read the outer destination address of message P, promptly backbone network target MAC (Media Access Control) address D in the message finds that it is different with the MAC Address of self, and node C forwards data message P from another ring port c1; After node D receives data message P from its ring port d2, read the outer destination address of message P, i.e. backbone network target MAC (Media Access Control) address D in the message; Find that it is identical with the MAC Address of self; Node D carries out ring operation down with data message P, promptly peels off outer destination address, reads the internal layer destination address-subnet target MAC (Media Access Control) address D0 in the message; And obtain backbone network VLAN ID 6 in the message; Utilize it to look into addresses forwarding table 4 then, behind the forwarding port d3 that obtains being mated, descend ring to be forwarded to corresponding subnet D0 from this port d3 data message P.
Therefore, subnet B0 on VLAN6 to the send datagram path of civilian P of subnet D0 is: B0 → B → C → D → D0.Through top analysis, the present invention has solved PBB-TE technology too heavy problem of configuration address task on looped network well, has also greatly improved packet forwarding speed simultaneously, has greatly improved network performance.
The data transmission system that is provided in the present embodiment based on looped network; As shown in Figure 6; This system comprises: outer destination address reading unit is used at node on the ring of looped network reading the backbone network destination address in the said message when an one of which ring port receives message; Retransmission unit on the ring, the address that is used for node self on backbone network destination address that said outer destination address reading unit is read and this ring directly forward said message not simultaneously from another ring port that this ring is gone up node.Preferably, this system also comprises: following ring performance element, be used for the address of node self on backbone network destination address that said outer destination address reading unit is read and this ring when identical, and carry out message and encircle down and operate.Node is when being connected with on the ring of subnet node on ring; The said performance element of ring down comprises: first lookup unit; The address that is used for node self on backbone network destination address that said outer destination address reading unit is read and this ring is identical; And when this ring is gone up node and is connected with subnet, during transmit the address of node on this ring, search with message in the forwarding port that mated of subnet destination address, backbone network destination address, backbone network VLAN ID; Under encircle retransmission unit, from the forwarding port that inquires with message down ring be forwarded to corresponding subnet.
In order to realize the transmission of ring message data; This system also comprises: second lookup unit; Be used for being connected with on the ring of subnet node when its ring lower port is received message; During transmit the address of node on this ring, search with message in the forwarding port that mated of subnet destination address, backbone network destination address, backbone network VLAN ID; Last ring retransmission unit is used for from the forwarding port that inquires the message ring being forwarded to looped network and transmits.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (7)
1. the addresses forwarding table collocation method based on looped network is characterized in that, comprising:
Search whether node is connected with subnet on the ring of looped network;
Be merely node configuration addresses forwarding table on the ring that is connected with subnet, comprise the forwarding entry of following content during configuration address is transmitted: the subnet destination address of message transmissions, the backbone network destination address of message transmissions, backbone network VLAN ID that message transmissions experienced and the forwarding port of message node on this ring.
2. the method for claim 1 is characterized in that,
Said subnet destination address comprises the upward first subnet destination address of going up the ring message transmissions of node of ring, reaches the upward second subnet destination address of the following ring message transmissions of node of ring.
3. the data transmission method based on looped network is characterized in that, comprising:
When node on the ring of looped network when an one of which ring port receives message, read the backbone network destination address in the said message;
The address of node self directly forwards said message not simultaneously from another ring port of the last node of this ring on the backbone network destination address that is read and this ring;
When the address of node self is identical on the backbone network destination address that is read and this ring, carry out message ring operation down;
For node on the ring that is connected with subnet, execution message ring operation down comprises step:
During transmit the address of node on this ring, search with message in the forwarding port that mated of subnet destination address, backbone network destination address, backbone network VLAN ID;
From the forwarding port that inquires message is encircled the subnet that is forwarded to correspondence down;
Wherein, the addresses forwarding table of said looped network disposes according to following method:
Search whether node is connected with subnet on the ring of looped network;
Be merely node configuration addresses forwarding table on the ring that is connected with subnet, comprise the forwarding entry of following content during configuration address is transmitted: the subnet destination address of message transmissions, the backbone network destination address of message transmissions, backbone network VLAN ID that message transmissions experienced and the forwarding port of message node on this ring.
4. method as claimed in claim 3 is characterized in that, also comprises:
When node on the ring that is connected with subnet from its ring lower port when receiving message, during transmit the address of node on this ring, search with message in the forwarding port that mated of subnet destination address, backbone network destination address, backbone network VLAN ID;
From the forwarding port that inquires the message ring being forwarded to looped network transmits.
5. the addresses forwarding table configuration-system based on looped network is characterized in that, comprising:
Search the unit, be used to search whether node is connected with subnet on the ring of looped network;
Dispensing unit; Be used to be merely node configuration addresses forwarding table on the ring that is connected with subnet, comprise the forwarding entry of following content during configuration address is transmitted: the subnet destination address of message transmissions, the backbone network destination address of message transmissions, backbone network VLAN ID that message transmissions experienced and the forwarding port of message node on this ring.
6. the data transmission system based on looped network is characterized in that, comprising:
Outer destination address reading unit is used at node on the ring of looped network reading the backbone network destination address in the said message when one of which encircles a port and receives message;
Retransmission unit on the ring, the address that is used for node self on backbone network destination address that said outer destination address reading unit is read and this ring directly forward said message not simultaneously from another ring port that this ring is gone up node;
Under encircle performance element, be used for the address of node self on backbone network destination address that said outer destination address reading unit is read and this ring when identical, carry out message ring operation down;
The said performance element of ring down specifically comprises:
First lookup unit; The address that is used for node self on backbone network destination address that said outer destination address reading unit is read and this ring is identical; And when the last node of this ring is connected with subnet; During transmit the address of node on this ring, search with message in the forwarding port that mated of subnet destination address, backbone network destination address, backbone network VLAN ID;
Under encircle retransmission unit, from the forwarding port that inquires with message down ring be forwarded to corresponding subnet;
Wherein, the addresses forwarding table of said looped network is configured by the addresses forwarding table configuration-system based on looped network, and said addresses forwarding table configuration-system based on looped network comprises:
Search the unit, be used to search whether node is connected with subnet on the ring of looped network;
Dispensing unit; Be used to be merely node configuration addresses forwarding table on the ring that is connected with subnet, comprise the forwarding entry of following content during configuration address is transmitted: the subnet destination address of message transmissions, the backbone network destination address of message transmissions, backbone network VLAN ID that message transmissions experienced and the forwarding port of message node on this ring.
7. system as claimed in claim 6 is characterized in that, this system also comprises:
Second lookup unit; Be used for being connected with on the ring of subnet node when its ring lower port is received message; During transmit the address of node on this ring, search with message in the forwarding port that mated of subnet destination address, backbone network destination address, backbone network VLAN ID;
Last ring retransmission unit is used for from the forwarding port that inquires the message ring being forwarded to looped network and transmits.
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| CN103152343B (en) * | 2013-03-04 | 2015-09-16 | 北京神州绿盟信息安全科技股份有限公司 | Set up method and the network equipment in internet security Protocol virtual private network tunnel |
| CN105959216B (en) * | 2016-06-22 | 2019-02-26 | 重庆世纪之光科技实业有限公司 | A kind of communication means, the apparatus and system of unidirectional serial bus network |
| CN107800581B (en) * | 2016-09-01 | 2022-03-18 | 中兴通讯股份有限公司 | Two-layer network and loopback detection method thereof |
| CN108462594B (en) * | 2017-02-21 | 2022-03-04 | 阿里巴巴集团控股有限公司 | Virtual private network and rule table generation method, device and routing method |
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| CN101155136A (en) * | 2006-09-29 | 2008-04-02 | 华为技术有限公司 | Method and system for implementing virtual gateway and virtual subnet |
| CN101425953A (en) * | 2008-12-09 | 2009-05-06 | 中兴通讯股份有限公司 | Address updating method for Ether ring network and network node |
| CN101425979A (en) * | 2008-12-10 | 2009-05-06 | 中兴通讯股份有限公司 | Data packet forwarding method for Ether ring network |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101155136A (en) * | 2006-09-29 | 2008-04-02 | 华为技术有限公司 | Method and system for implementing virtual gateway and virtual subnet |
| CN101425953A (en) * | 2008-12-09 | 2009-05-06 | 中兴通讯股份有限公司 | Address updating method for Ether ring network and network node |
| CN101425979A (en) * | 2008-12-10 | 2009-05-06 | 中兴通讯股份有限公司 | Data packet forwarding method for Ether ring network |
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| CN101697525A (en) | 2010-04-21 |
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