CN102025585A - Method and device for protecting Ethernet tunnel - Google Patents
Method and device for protecting Ethernet tunnel Download PDFInfo
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- CN102025585A CN102025585A CN2009100928601A CN200910092860A CN102025585A CN 102025585 A CN102025585 A CN 102025585A CN 2009100928601 A CN2009100928601 A CN 2009100928601A CN 200910092860 A CN200910092860 A CN 200910092860A CN 102025585 A CN102025585 A CN 102025585A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0668—Management of faults, events, alarms or notifications using network fault recovery by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure
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Abstract
The invention discloses a method for protecting an Ethernet tunnel. More than one protective entity is provided for a working entity in an Ethernet protective domain, and the working entity and the protective entity have the same two endpoint bridges. The method comprises the following steps of: when one endpoint bridge detects the fault of the working entity, switching the protected tunnel on the working entity to the protective entity, namely modifying the output port of a forwarding item of the protected tunnel associated with the port of the working entity into the port of the selected protective entity, and informing the other endpoint bridge of port switching. The invention discloses a device for protecting the Ethernet tunnel at the same time. The method and the device can well realize quick protection of transfer of electrostatic images (TESI), enhance the robustness of a provider backbone bridge-traffic engineering (PBB-TE) network, and improve the performance of the network.
Description
Technical field
The present invention relates to the protection switching technique in the Ethernet, relate in particular to the guard method and the device in a kind of Ethernet tunnel.
Background technology
Along with carrier class Ethernet (CE, Carrier Ethernet) proposition of notion, for satisfying the continuous high data rate demand of communication network, connection-oriented ethernet technology---operator backbone transmits (PBT, Provider Backbone Transport) and also emerges 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 Institute of Electrical and Electric Engineers (IEEE, Institute of Electrical and Electronics Engineer) the operator backbone bridge joint (PBB of 802.1ah definition, Provider Backbone Bridge) technology, IEEE calls the PBT technology operator backbone bridging technology (PBB-TE, Provider Backbone Bridge Traffic Engineering) of supporting traffic engineering.The PBB-TE technology is based on the PBB technology, its core is that the PBB technology is improved, the source device of CE inserts backbone network target MAC (Media Access Control) address (B-DA at the head of message, Backbone Destination MAC Address), the source MAC (B-SA of backbone network, Backbone Source MAC Address), backbone network VLAN (B-VLAN, Backbone Virtual Local Area Network) and Service Instance mark (I-TAG, Service Instance TAG).The source device of CE and the forward-path between the destination device are static configuration in advance, and middle CE equipment can be transmitted the forward efficiency height based on B-DA in transmitting and B-VID to Frame.
In order to make Ethernet reach telecommunications rank standard, PBB-TE adopts resist technology usually.Fig. 1 is the schematic diagram of the end-to-end linear protection in Ethernet tunnel in the prior art, and as shown in Figure 1, solid line is represented work tunnel end to end, and chain-dotted line is represented backup tunnel end to end, and the chain-dotted line of band four-headed arrow is represented VLAN.The end-to-end main tunnel of certain traffic engineering Service Instance (TESI) be TN1:PE1 ← → P1 ← → P2 ← → P3 ← → PE2, PE1 and PE2 are the end of this tunnel example.Backup tunnel 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 B-VLAN1 when pre-configured, over run tunnel TN2 specifies B-VLAN2.When end-to-end main tunnel TN1 breaks down, data flow can be switched on the backup tunnel TN2.
PBB-TE adopts connectivity fault management (CFM, the Connectivity Fault Management) mechanism among the IEEE 802.1ag to come tunnel state in the monitoring network constantly.When leading, can transfer to business automatically on the backup path of setting up in advance, realize the protecting tunnel technology with tunnel failure.
In the prior art, check that by the general character that defines among the IEEE 802.1ag of the company of transmission in the tunnel message (CCM, Continuity Check Message) detects the connectedness in tunnel.Fig. 2 is a protecting tunnel principle schematic end to end among the PBB-TE, and as shown in Figure 2, solid line is represented work tunnel end to end, and chain-dotted line is represented backup tunnel end to end.Send CCM mutually along main tunnel TN1 and backup tunnel TN2 respectively between endpoint of a tunnel PE1 and the PE2, the CCM of main tunnel and backup tunnel encapsulates B-VLAN1 and B-VLAN2 respectively.This method has realized the complete trails protection in tunnel.
For realizing protection, can adopt the method for configuration TESI to two-way communication.The traffic engineering Service Instance TESI of a point-to-point is made up of the ESP of a pair of two-way point-to-point, about the specific descriptions of tlv triple and TESI can be referring to IEEE 802.1Qay standard.
Though the resist technology end to end of PBB-TE can effectively be protected the tunnel, not only protection switch time is longer for this protection scheme end to end, and the node that involves is too many.Therefore, the IEEE tissue has proposed PBB-TE localised protection scheme.Fig. 3 is a PBB-TE stage casing protection philosophy schematic diagram, and as shown in Figure 3, fine line is represented work tunnel end to end; thin dashed line is represented backup tunnel end to end; heavy line is represented active section, and thick chain-dotted line is represented backup segment end to end, and the chain-dotted line of band four-headed arrow is represented VLAN.P1-P2-P3 be carried main end to end tunnel TN1 (PE1 ← → P1 ← → P2 ← → P3 ← → physical link (section of being called) in PE2) part path, can protect with backup P1-P4-P3 physical link.Maximum not being both of protection end to end of the segment protect scheme of PBB-TE and PBB-TE: the segment protect scheme is based on the protection of physical link, and protection scheme is based on the protection in tunnel end to end.
In order to realize the function of the segment protect among the PBB-TE, the CCM message needs simultaneously their integrality of checking on the work entity of protected field and protection entity.Fig. 4 is another schematic diagram of PBB-TE stage casing protection philosophy; as shown in Figure 4; fine line is represented work tunnel end to end; heavy line is represented active section; thick chain-dotted line is represented backup segment end to end; send CCM mutually along work entity (P1-P2-P3) and protection entity (P1-P4-P3) respectively between end points P1 and the P3, the CCM of work entity and protection entity encapsulates corresponding B-VLAN (specifically adopting which kind of B-VLAN mode to encapsulate does not also determine) respectively.This method has realized excellent protection to the local path (physical pathway) in tunnel.
Though the resist technology of TESI end to end of PBB-TE can effectively be protected the tunnel, this protection scheme of TESI end to end protection switch time is very long.And the above-mentioned protection based on section is switched mature technique is not arranged as yet.
Summary of the invention
In view of this, main purpose of the present invention is to provide the guard method and the device in a kind of Ethernet tunnel, can strengthen the robustness of PBB-TE network, improves the network performance of Ethernet.
For achieving the above object, technical scheme of the present invention is achieved in that
The guard method in a kind of Ethernet tunnel is the protection entity that a work entity is provided with one or more in the Ethernet protected field, and described work entity has two identical end points bridges with described protection entity; Described method comprises:
When described end points bridge detects described work entity fault, the shielded tunnel on the work entity is switched on the protection entity.
Preferably, described with the shielded tunnel on the work entity be switched to one the protection entity on, comprising:
To be revised as the port of selected protection entity with the outbound port of the forwarding entry in the shielded tunnel of the port association of described work entity.
Preferably, choose the port of protection entity, comprising:
When described end points bridge is determined to have idle protection entity; the free time protection entity of choosing port label minimum is as switching entity; to be revised as the port of selected protection entity with the outbound port of the forwarding entry in the shielded tunnel of the port association of described work entity, and notify another end points bridge to carry out port switching.
Preferably, choose the port of protection entity, comprising:
When described end points bridge is determined not have idle protection entity; to choose the minimum protection entity of priority as switching entity; to be revised as the port of selected protection entity with the outbound port of the forwarding entry in the shielded tunnel of the port association of described work entity, and notify described another end points bridge to carry out port switching.
Preferably, described method also comprises:
When described end points bridge detects described work entity fault and disappears, the outbound port of the forwarding entry in the shielded tunnel of the port association of the protection entity at current business place is revised as the port of described work entity.
Preferably, notify another end points bridge to carry out port switching, comprising:
The port of the outbound port by being revised as forwarding entry is notified described another end points bridge, the notice that described another end points bridge is switched by the corresponding port receiving port of protection entity in described another end points bridge at described outbound port place.
Preferably, described method also comprises:
After described another end points bridge joint is received the notice of switching, the outbound port of the forwarding entry in the shielded tunnel of the port association of the protection entity at current business place is revised as the described port that receives the notice of switching.
The protective device in a kind of Ethernet tunnel comprises:
The unit is set, and being used at the Ethernet protected field is the protection entity that a work entity is provided with one or more, and wherein, described work entity has two identical end points bridges with described protection entity;
Detecting unit is used to detect whether fault of described work entity, triggers switch unit during fault; And
Switch unit is used for the shielded tunnel on the work entity is switched to a protection entity.
Preferably, described switch unit comprises:
Determining unit is used to determine whether to have idle protection entity, triggers when existing and chooses the unit;
Choose the unit, be used to choose the free time protection entity of port label minimum as switching entity;
Revise the unit, be used for the outbound port with the forwarding entry in the shielded tunnel of the port association of described work entity is revised as the port of selected protection entity; And
Notification unit is used to notify another end points bridge to carry out port switching.
Preferably; when described determining unit is determined not have idle protection entity; trigger the described unit of choosing and to choose the minimum protection entity of priority as switching entity; described modification unit will be revised as the port of selected protection entity with the outbound port of the forwarding entry in the shielded tunnel of the port association of described work entity, notify another end points bridge to carry out port switching by described notification unit.
Preferably, when described detecting unit detects described work entity fault and disappears, trigger the port that described modification unit is revised as the outbound port of the forwarding entry in the shielded tunnel of the port association of the protection entity at current business place described work entity.
Preferably, the port of the outbound port of described notification unit by being revised as forwarding entry is notified another end points bridge, the notice that another end points bridge is switched by the corresponding port receiving port of protection entity in another end points bridge at described outbound port place.
Preferably, described device also comprises:
Receiving element is used to receive the notice of switching, and triggers described modification unit the outbound port of the forwarding entry in the shielded tunnel of the port association of the protection entity at current business place is revised as the described port that receives the notice of switching.
Among the present invention; by the protection entity of one or more is set for work entity; and the Ethernet protected field be work entity and the protection entity end points bridge is set; when the end points bridge detects work entity fault or fault disappearance; the outgoing interface of forwarding entry that will be by revising current business carries out switching services; the present invention can realize protection fast to TESI well, has strengthened the robustness of PBB-TE network, has improved network performance.
Description of drawings
Fig. 1 is the schematic diagram of the end-to-end linear protection in Ethernet tunnel in the prior art;
Fig. 2 is a protecting tunnel principle schematic end to end among the PBB-TE;
Fig. 3 is a PBB-TE stage casing protection philosophy schematic diagram;
Fig. 4 is another schematic diagram of PBB-TE stage casing protection philosophy;
Fig. 5 is the flow chart of the guard method in Ethernet of the present invention tunnel;
Fig. 6 breaks down for work entity and the structural representation when idle protection entity is arranged;
Fig. 7 breaks down for work entity and the protection implementation structure schematic diagram when idle protection entity is arranged;
Fig. 8 breaks down for work entity and the structural representation when not having idle protection entity;
Fig. 9 breaks down for work entity and the protection implementation structure schematic diagram when not having idle protection entity;
Figure 10 is the composition structural representation of the protective device in Ethernet of the present invention tunnel.
Embodiment
Basic thought of the present invention is: by the protection entity of one or more is set for work entity; and the Ethernet protected field be work entity and the protection entity end points bridge is set; when the end points bridge detects work entity fault or fault disappearance; the outgoing interface of forwarding entry that will be by revising current business carries out switching services; the present invention can realize protection fast to TESI well; strengthen the robustness of PBB-TE network, improved network performance.
For making the purpose, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is described in more detail.
Fig. 5 is the flow chart of the guard method in Ethernet of the present invention tunnel, and as shown in Figure 5, the guard method in Ethernet of the present invention tunnel may further comprise the steps:
Step 501: for shielded tunnel disposes " protected field " on the Ethernet zone of appointment, protected field comprises the protection entity of a work entity and N bar correspondence, and wherein, N is a natural number.Work entity has two identical end points bridges with the protection entity.Protected field is used for protecting one group of TESI by protected field.Structural representation between end points bridge, work entity and the protection entity please refer to shown in Fig. 6, Fig. 7, Fig. 8 or Fig. 9.
Step 502: be that shielded tunnel configuration is the protection group on the end points bridge, the set that the protection group comprises 1 port that links to each other with work entity and forms with N backup port protecting entity to link to each other; Be the backup port distribution priority of protection group, the entity (path) that the priority of port links to each other corresponding to described port is gone up the priority of serviced business.
Step 503: whether the end points bridge detects work entity and breaks down.If break down, then execution in step 504, when not breaking down, continue to detect this work entity.
Step 504: detect end points bridge inspection in the protection group that work entity breaks down and whether exist continuous protection entity idle and do not have a backup port of fault.If have execution in step 505, otherwise execution in step 506.After detecting work entity and breaking down; whether continue to detect and be provided with the protection entity for this work entity; and whether the protection entity of testing entity have free time and port trouble-free, can not be switched to the Business Stream on the work entity on the protection entity of this port failure if fault is arranged then mean.
Step 505: described end points bridge is chosen of label minimum in this type of backup port, changes step 507 over to.Among the present invention; the also port switched as protection of the backup port in the free time at random; generally speaking; the port label priority professional with it is complementary; the priority that also means this port loaded service of port label minimum is lower, after the switching services on the work entity is to the minimum port of this priority, if having corresponding business stream to pass through after this port; the Business Stream that influences this port is for the user, and professional influence power also is limited.
Step 506: described end points bridge chooses the minimum and continuous protection entity of priority not have the backup port of fault, changes step 507 over to.If there is no Kong Xian port, then can only in being arranged, the port of Business Stream select a conduct to switch object, at this moment, with the port of selecting the minimum Business Stream of priority to flow through, even professional influential to this port, owing to be the minimum business of service priority, professional influence is also quite limited.
Step 507: described end points bridge will be revised as selected backup port with the outbound port of the forwarding entry in the tunnel of the protected TESI of the port association of work entity, send switching notification message to another end points bridge simultaneously on the protection entity that selected backup port links to each other.The RDI field that the protection switching messages can be carried in the CCM message realizes, but is not limited thereto mode.
Step 508: after described another end points bridge joint is received switching notification message, will be revised as the backup port that receives switching notification message with the outbound port of the forwarding entry in the protected tunnel of the port association of work entity.
Step 509: whether the fault of end points bridge testing entity disappears.If disappear, execution in step 510, otherwise, the malfunction of continuation testing entity.
Step 510: describedly detect end points bridge that work entity recovers the outbound port of the forwarding entry in the shielded tunnel of the described backup port association of choosing is revised as the port that links to each other with work entity.
Fig. 6 breaks down for work entity and the structural representation when idle protection entity is arranged, and as shown in Figure 6, protected field is protected the local bearing link of TESI-1, TESI-2, TESI-3 and TESI-4.Have 1 work entity and 3 protection entities in the protected field, under non-failure conditions, TESI-1, TESI-2, TESI-3 and TESI-4 pass protected field by work entity.End points bridge 1 and end points bridge 2 have all disposed the protection group; 1 working port and 3 backup ports are arranged in the protection group; wherein, both P4 ports all have been endowed the priority of the business of TESI-5, and P2 has disposed lowest priority (reason is the protection entity free time that links to each other with both) with the P3 port.It needs to be noted that TESI-5 passes protected field, but the protection of not protected territory.Wherein, the DA (destination-address) that supposes TESI-1 is that the B-VID of the ESP of X is 1, and oppositely the B-VID of ESP is 2; The DA of TESI-2 is that the B-VID of the ESP of M is 3, and oppositely the B-VID of ESP is 4; The DA of TESI-3 is that the B-VID of the ESP of U is 5, and oppositely the B-VID of ESP is 6; The DA of TESI-4 is that the B-VID of the ESP of J is 7, and oppositely the B-VID of ESP is 8; The DA of TESI-5 is that the B-VID of the ESP of P is 9, and oppositely the B-VID of ESP is 10; TESI-1, TESI-2, TESI-3, TESI-4 and the TESI-5 concrete forwarding entry in end points bridge 1 and end points bridge 2 sees also Fig. 6.
Fig. 7 breaks down for work entity and the protection implementation structure schematic diagram when idle protection entity is arranged; as shown in Figure 7; fault has taken place in work entity; end points bridge 1 detects fault earlier; it checks backup port in the protection group of self; find that backup port P2 and P3 are the free time, end points bridge 1 is chosen the P2 port of label minimum in the idle port.Then, end points bridge 1 is revised transmitting of self, and the outbound port of the forwarding entry of TESI-1 (＜X, 1 〉), TESI-2 (＜M, 3 〉), TESI-3 (＜U, 5 〉) and TESI-4 (＜J, 7 〉) correspondence is revised as P2 by P1.Simultaneously, end points bridge 1 sends switching notification message on protection entity 1, and wherein, switching notification message can adopt the RDI field in the CCM message to carry, but is not limited thereto mode.End points bridge 2 is revised transmitting of self after receiving switching notification message on the protection entity 1; with TESI-1 (＜Y, 2 〉), TESI-2 (＜N, 4 〉), TESI-3 (＜V; 6 〉) and the outbound port of the corresponding forwarding entry of TESI-4 (＜K, 8 〉) be revised as P2 by P1.
Fig. 8 breaks down for work entity and the structural representation when not having idle protection entity; as shown in Figure 8, protected field is only protected TESI-1, has 1 work entity and 3 protection entities in the protected field; under non-failure conditions, TESI-1 passes protected field by work entity.TESI-2, TESI-3 and TESI-4 are not protected the territory protection, and TESI-2, TESI-3 and TESI-4 pass protected field by protection entity 1, protection entity 2 and protection entity 3 respectively.End points bridge 1 and end points bridge 2 have all disposed the protection group, and 1 working port and 3 backup ports are arranged in the protection group, and 3 backup ports have been endowed priority.The priority of the P2 of two end points bridges, P3 and the P4 port priority with the business of TESI-2, TESI-3 and TESI-4 respectively is identical, and the order of priority is P2＞P3＞P4.
Fig. 9 breaks down for work entity and the protection implementation structure schematic diagram when not having idle protection entity, and as shown in Figure 9, fault has taken place work entity, and end points bridge 1 detects fault earlier, and it checks backup port in the protection group of self.Owing to do not find idle backup port, end points bridge 1 is checked the priority of backup port, finds that the priority of P4 backup port is minimum, and end points bridge 1 is chosen the P4 port.End points bridge 1 is revised transmitting of self, and the outbound port of the forwarding entry that TESI-1 (＜X, 1 〉) is corresponding is revised as P4 by P1.Simultaneously; end points bridge 1 sends switching notification message on protection entity 3 (this message can adopt the RDI field in the CCM message to realize; but the method for being not limited thereto); end points bridge 2 is revised transmitting of self after receiving switching notification message on the protection entity 2; the outbound port of the forwarding entry that TESI-1 (＜Y, 2 〉) is corresponding is revised as P4 by P1.
Segment protect scheme of the present invention can realize protection fast to TESI well, strengthens the robustness of PBB-TE network, improves network performance.
Figure 10 is the composition structural representation of the protective device in Ethernet of the present invention tunnel, as shown in figure 10, the protective device in Ethernet of the present invention tunnel comprises unit 1001, detecting unit 1002 and switch unit 1003 is set, wherein, unit 1001 is set, and to be used at the Ethernet protected field be the protection entity that a work entity is provided with one or more, wherein, described work entity has two identical end points bridges with described protection entity; Detecting unit 1002 is used to detect whether fault of described work entity, triggers switch unit 1003 during fault; Switch unit 1003 is used for the shielded tunnel on the work entity is switched to a protection entity.As shown in figure 10, switch unit 1003 of the present invention also comprises determining unit 10030, chooses unit 10031, revises unit 10032 and notification unit 10033, wherein, determining unit 10030 is used to determine whether to have idle protection entity, triggers when existing and chooses unit 10031; Choose unit 10031 and be used to choose the free time protection entity of port label minimum as switching entity; Revise the port that unit 10032 is used for the outbound port with the forwarding entry in the shielded tunnel of the port association of described work entity is revised as selected protection entity; Notification unit 10033 is used to notify another end points bridge to carry out port switching.
Wherein, when determining unit 10030 is determined not have idle protection entity; unit 10031 is chosen in triggering will choose the minimum protection entity of priority as switching entity; revise unit 10032 and will be revised as the port of selected protection entity, notify another end points bridge to carry out port switching by described notification unit with the outbound port of the forwarding entry in the shielded tunnel of the port association of described work entity.
When detecting unit 1002 detects described work entity fault and disappears, trigger and revise the port that unit 10032 is revised as the outbound port of the forwarding entry in the shielded tunnel of the port association of the protection entity at current business place described work entity.
The port of the outbound port of notification unit 10033 by being revised as forwarding entry is notified another end points bridge, the notice that another end points bridge is switched by the corresponding port receiving port of protection entity in another end points bridge at described outbound port place.
As shown in figure 10; the protective device in Ethernet of the present invention tunnel also comprises receiving element 1004; be used to receive the notice of switching, and trigger revise unit 10032 outbound port of the forwarding entry in the shielded tunnel of the port association of the protection entity at current business place is revised as the described port that receives the notice of switching.
Those skilled in the art are to be understood that; the protective device in Ethernet tunnel shown in Figure 10 is to be provided with for the guard method that realizes aforesaid Ethernet tunnel; the function of each processing unit can be with reference to the description of preceding method and understand in the device shown in Figure 10; the function of each processing unit can realize by the program that runs on the processor, also can realize by concrete logical circuit.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (13)
1. the guard method in an Ethernet tunnel is characterized in that, is the protection entity that a work entity is provided with one or more in the Ethernet protected field, and described work entity has two identical end points bridges with described protection entity; Described method comprises:
When described end points bridge detects described work entity fault, the shielded tunnel on the work entity is switched on the protection entity.
2. method according to claim 1 is characterized in that, described with the shielded tunnel on the work entity be switched to one the protection entity on, comprising:
To be revised as the port of selected protection entity with the outbound port of the forwarding entry in the shielded tunnel of the port association of described work entity.
3. method according to claim 2 is characterized in that, chooses the port of protection entity, comprising:
When described end points bridge is determined to have idle protection entity; the free time protection entity of choosing port label minimum is as switching entity; to be revised as the port of selected protection entity with the outbound port of the forwarding entry in the shielded tunnel of the port association of described work entity, and notify another end points bridge to carry out port switching.
4. method according to claim 2 is characterized in that, chooses the port of protection entity, comprising:
When described end points bridge is determined not have idle protection entity; to choose the minimum protection entity of priority as switching entity; to be revised as the port of selected protection entity with the outbound port of the forwarding entry in the shielded tunnel of the port association of described work entity, and notify described another end points bridge to carry out port switching.
5. according to each described method in the claim 1 to 4, it is characterized in that described method also comprises:
When described end points bridge detects described work entity fault and disappears, the outbound port of the forwarding entry in the shielded tunnel of the port association of the protection entity at current business place is revised as the port of described work entity.
6. method according to claim 5 is characterized in that, notifies another end points bridge to carry out port switching, comprising:
The port of the outbound port by being revised as forwarding entry is notified described another end points bridge, the notice that described another end points bridge is switched by the corresponding port receiving port of protection entity in described another end points bridge at described outbound port place.
7. method according to claim 6 is characterized in that, described method also comprises:
After described another end points bridge joint is received the notice of switching, the outbound port of the forwarding entry in the shielded tunnel of the port association of the protection entity at current business place is revised as the described port that receives the notice of switching.
8. the protective device in an Ethernet tunnel is characterized in that, comprising:
The unit is set, and being used at the Ethernet protected field is the protection entity that a work entity is provided with one or more, and wherein, described work entity has two identical end points bridges with described protection entity;
Detecting unit is used to detect whether fault of described work entity, triggers switch unit during fault; And
Switch unit is used for the shielded tunnel on the work entity is switched to a protection entity.
9. device according to claim 8 is characterized in that, described switch unit comprises:
Determining unit is used to determine whether to have idle protection entity, triggers when existing and chooses the unit;
Choose the unit, be used to choose the free time protection entity of port label minimum as switching entity;
Revise the unit, be used for the outbound port with the forwarding entry in the shielded tunnel of the port association of described work entity is revised as the port of selected protection entity; And
Notification unit is used to notify another end points bridge to carry out port switching.
10. device according to claim 9; it is characterized in that; when described determining unit is determined not have idle protection entity; trigger the described unit of choosing and to choose the minimum protection entity of priority as switching entity; described modification unit will be revised as the port of selected protection entity with the outbound port of the forwarding entry in the shielded tunnel of the port association of described work entity, notify another end points bridge to carry out port switching by described notification unit.
11. device according to claim 9; it is characterized in that; when described detecting unit detects described work entity fault and disappears, trigger the port that described modification unit is revised as the outbound port of the forwarding entry in the shielded tunnel of the port association of the protection entity at current business place described work entity.
12. according to claim 10 or 11 described devices; it is characterized in that; the port of the outbound port of described notification unit by being revised as forwarding entry is notified another end points bridge, the notice that another end points bridge is switched by the corresponding port receiving port of protection entity in another end points bridge at described outbound port place.
13. device according to claim 12 is characterized in that, described device also comprises:
Receiving element is used to receive the notice of switching, and triggers described modification unit the outbound port of the forwarding entry in the shielded tunnel of the port association of the protection entity at current business place is revised as the described port that receives the notice of switching.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100928601A CN102025585A (en) | 2009-09-09 | 2009-09-09 | Method and device for protecting Ethernet tunnel |
| PCT/CN2009/075570 WO2011029249A1 (en) | 2009-09-09 | 2009-12-14 | Protection method and device for an ethernet tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100928601A CN102025585A (en) | 2009-09-09 | 2009-09-09 | Method and device for protecting Ethernet tunnel |
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| CN102025585A true CN102025585A (en) | 2011-04-20 |
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| CN2009100928601A Pending CN102025585A (en) | 2009-09-09 | 2009-09-09 | Method and device for protecting Ethernet tunnel |
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| WO (1) | WO2011029249A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| WO2011029249A1 (en) | 2011-03-17 |
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