CN101159696A - PBT network flow control method and apparatus - Google Patents
PBT network flow control method and apparatus Download PDFInfo
- Publication number
- CN101159696A CN101159696A CNA2007101875072A CN200710187507A CN101159696A CN 101159696 A CN101159696 A CN 101159696A CN A2007101875072 A CNA2007101875072 A CN A2007101875072A CN 200710187507 A CN200710187507 A CN 200710187507A CN 101159696 A CN101159696 A CN 101159696A
- Authority
- CN
- China
- Prior art keywords
- link
- pbt
- equipment
- protection
- flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention relates to a PBT network flow control method. The PBT network comprises a source PBT equipment and at least two destination PBT equipments, which are respectively backups of the other one. The method comprises configuring the link between the source PBT equipment and one destination PBT equipment as the working link; and configuring the link between the source PBT equipment and the rest of PBT equipment as the protection link. When the working link and the destination PBT equipment connected with the working link are normal, the flow is transmitted through the working link. When the working link or/and the destination equipment connected with the working link fails/fail, the flow is switched to the normal protection link. The invention adopting a PBT network structure with the same source and hetero-sink can ensure the network safety. Corresponding to the method, the invention also provides a PBT network flow control device.
Description
Technical field
The present invention relates to the ethernet technology field, relate in particular to a kind of PBT (Provider BackboneTrunk, provider backbone transmission) method for controlling network flow and device.
Background technology
Along with developing rapidly of metropolitan area network, aspects such as multi-service support, extensibility and reliability to Ethernet have proposed more and more higher requirement, various Ethernet expansion techniques occurred, one of representative of these Ethernet expansion techniques is MiM (MAC in MAC) technology.MiM adopts double-deck MAC Address head to come message is encapsulated, provide higher business support ability by increasing outer MAC head and professional extension tag, utilize two-layer MAC header, MiM can realize distributing different tunnels according to type of service, finish professional isolation and differentiation, improved QoS (Quality of Service).
The PBT technology is to the extension of MiM and expansion, and it is to use the MiM frame format, revises controlled function, closes agreements such as ethernet mac address study and generation tree, adopts a kind of technology of tunnel style forwarding and planning flow.Existing PBT technology is after the Ethernet nucleus is closed Spanning-Tree Protocol, and nucleus equipment is by management system static configuration tunnel path, and generation is transmitted, and determines next jumping according to outside VLAN ID and target MAC (Media Access Control) address.The PBT technology has advantages such as favorable expandability, QoS height, service flexibility height and security performance be good.
Referring to Fig. 1, be PBT networking schematic diagram, it is to adopt protection in 1: 1 to switch model.Device A and PBT edge device, be also referred to as PBB (Provider Backbone Bridge, the operator backbone network bridge)-and the TE edge device, connect user terminal M and N by user network respectively, interconnect by PBT intermediate equipment c, d or e, f between device A and the B.Wherein, slave unit A process c and d are to equipment B configuration link 10, slave unit B process d and c are to equipment B configuration link 11, link 10 and 11 all is unidirectional, in like manner, slave unit A process e and f are to equipment B configuration link 20, and slave unit B process f and e are to equipment B configuration link 21, and link 20 and 21 all is unidirectional.Above-mentioned link 10,11,20 and 21 is called as ESP (Ethernet Switch Path) in PBT, ESP is meant the point-to-point unidirectional tunnel of Data transmission between the PE among the PBT (edge device), article one, ESP can carry a plurality of MiM Service Instances, along on each node (for example c) of ESP forward-path, message is to transmit in the VLAN of PBT special use, that is to say that different ESP belong to different VLAN.In the PBT network, employing＜B-VID, B-DA〉discern ESP, wherein, B-VID is meant backbone VLAN ID, B-DA is meant the backbone network target MAC (Media Access Control) address.Still with Fig. 1 explanation, PBT adopts protection in 1: 1 to switch model and is meant link 10,11 switching to link 20,21.Configuration link 10; 11 is active link (working trunk); configuration link 20; 21 are protection link (protection trunk); transmit data by active link under the normal condition; promptly; device A sends message by link 10 to equipment B; by the message of link 11 receptions from equipment B; and; device A regularly sends CC (Connection check to equipment B; communication with detection) message; and the answer of monitoring the CCM message, with the connectedness of testing link, in case there are three CCM messages not receive answer; system will start the protection link; also promptly, device A sends message by link 20 to equipment B, by the message of link 21 receptions from equipment B.Thus, in the PBT network, when active link went wrong, flow can switch to the protection link in 50ms, improved reliability.
Be not difficult to find out that from last surface analysis the PBT networking mode is " homology chummage " pattern at present, perhaps is called " the same purpose of homology " pattern, with Fig. 1 is example, when device A when equipment B sends message, device A promptly is a source device, equipment B promptly is destination device (a place equipment).Can effectively avoid the caused flow interrupt of link failure though adopt the protection switchover mode; yet; when the destination device fault; present protection switchover mode is then of no avail; with Fig. 1 is example; when the equipment B fault; even flow is switched on the protection link; this moment is because the equipment B fault; can't handle and normally E-Packet, if equipment B is a very crucial transmission node in the whole PBT network, so; the flow of whole PBT network is transmitted and will be had a strong impact on, even causes whole PBT network paralysis.
Summary of the invention
In view of this, the invention provides a kind of PBT method for controlling network flow and device, to solve the insecure problem of network that present homology chummage causes.
For this reason, the embodiment of the invention adopts following technical scheme:
A kind of PBT method for controlling network flow, described PBT network comprise source PBT equipment and purpose PBT equipment, and described purpose PBT equipment is at least two and backup each other; Described method comprises: the link between source of configuration PBT equipment and the purpose PBT equipment is an active link, and the link that disposes between described source PBT equipment and all the other the purpose PBT equipment is the protection link; When active link and the purpose of connecting PBT of active link institute equipment all just often, by the active link converting flow, when the active link fault or/and during the purpose of connecting PBT of active link institute equipment fault, flow is switched on the normal protection link.
Determine link or/and the purpose of connecting PBT of link institute equipment is normal or fault by following steps: each purpose PBT equipment regularly sends detection messages to source PBT equipment; When described source PBT equipment receives the detection messages of certain purpose PBT equipment in during cycle, determine that this purpose PBT equipment and link thereof are normal; When described source PBT equipment is not received certain purpose PBT Equipment Inspection message in during cycle, determine that this purpose PBT equipment is or/and link failure.
After on flow being switched to the protection link, also comprise: when determining this protection link failure, flow is switched to other protect on links, perhaps switch on the active link that fault recovered.
Described active link comprises main with active link and standby active link; Described active link fault is meant the main all faults of active link and standby active link of using.
Described protection link comprises main with protection link and stand-by protection link, described flow is switched on the protection link, is at first flow to be switched to mainly with on the protection link,, flow is switched on the stand-by protection link during with protection link also fault when main again.
At source PBT equipment side, realize that by following steps flow switches: be respectively each link-attached purpose PBT equipment and set up the encapsulation list item, and these a plurality of encapsulation list items foundation are had related protection group; In a protection group, for each encapsulation list item is provided with flag bit, wherein, except that the flag bit set with the encapsulation list item of active link, flag bits of all the other encapsulation list items all are default value; When the active link fault or/and the purpose of connecting PBT of active link institute equipment when breaking down; the flag bit of active link is used as default; then from described protection group selection another one encapsulation list item; and, at last flow is switched on the encapsulation list item link corresponding of this new set its flag bit set.
Described encapsulation list item is by the ESP information of determining link and determine that the I-TAG information of transmitting the territory constitutes.
A kind of PBT network traffics control device, this device is connected with at least two mutually redundant purpose PBT equipment, described device comprises: the link configuration unit, being used to dispose described device is active link with the link that a purpose PBT equipment is connected, and disposes the link that described device is connected with all the other purpose PBT equipment and is the protection link; The Link State judging unit is used to judge whether each link and purpose of connecting PBT equipment thereof is normal; Flow controlling unit, when active link and the purpose of connecting PBT of active link institute equipment all just often, control described device by the active link converting flow, otherwise, flow is switched on the normal protection link.
Described Link State judging unit further comprises: timing unit is used to be provided with the cycle that receives detection messages; Receiving element is used to receive the detection messages that purpose PBT equipment sends; Judging unit is used to judge whether described receiving element normally receives detection messages in the cycle that described timing unit presets, if, determine that this purpose PBT equipment and link thereof are normal, otherwise, determine purpose PBT equipment or/and link failure.
Described active link comprises main with active link and standby active link; Described protection link comprises main with protection link and stand-by protection link.
As seen, at the existing scheme defective of no avail to the situation of destination device fault, method of the present invention adopts the PBT networking structure of the different place of homology, not only can realize the switching of ESP fault, can carry out flow too for the destination device fault and switch, thus the fail safe of assurance PBT network.Particularly when destination device is the forwarding unit of comparison key, can guarantee that network can not paralyse because of the fault of certain equipment.
Description of drawings
Fig. 1 is a prior art PBT networking schematic diagram;
Fig. 2 is the inventive method flow chart;
Fig. 3 is the embodiment of the invention one schematic diagram;
Fig. 4 is the embodiment of the invention one a source PBT operation of equipment flow chart;
Fig. 5 is the embodiment of the invention one link/purpose PBT Equipment Inspection flow chart;
Fig. 6 is the embodiment of the invention two schematic diagrames;
Fig. 7 is apparatus of the present invention structural representation.
Embodiment
Core of the present invention is, makes up the PBT network architecture of the different place of homology, like this, when a destination device fault, utilizes other destination devices to transmit data, can not influence the normal operation of network, improves network reliability.
Referring to Fig. 2, be the inventive method flow chart, may further comprise the steps:
Step 201: purpose PBT equipment is set backups each other, wherein, purpose PBT equipment is at least two;
Step 202: the link between source of configuration PBT equipment and the purpose PBT equipment is an active link, and the link that disposes between described source PBT equipment and all the other the purpose PBT equipment is the protection link;
Step 203: when active link and the purpose of connecting PBT of active link institute equipment all just often, by the active link converting flow, when the active link fault or/and during the purpose of connecting PBT of active link institute equipment fault, flow is switched on the protection link.
Wherein, determine whether normal mode is for purpose PBT equipment and link thereof, each purpose PBT equipment regularly sends detection messages to source PBT equipment, if source PBT equipment normally receives the detection messages of certain purpose PBT equipment in during cycle, think that then this purpose PBT equipment and link thereof are all normal, otherwise, think that then this purpose PBT equipment is or/and fault has appearred in link.Herein, though similar with prior art all is to adopt detection messages to determine whether link/purpose PBT equipment is normal,, existing scheme is to adopt source device to send detection messages to destination device, by destination device whether normally feedback judge, be a kind of forward detection mode.And in the present invention, owing to there are at least two purpose PBT equipment, therefore, adopt each purpose PBT equipment to send the mode of detection messages to source PBT equipment, it is the mode of inverse detection, as long as source PBT equipment and each purpose PBT equipment agreement send period/interval, thereby can alleviate the burden of source PBT equipment to a certain extent.Certainly, realize angle, also can adopt the mode of the forward detection of existing scheme from invention.
Below in conjunction with accompanying drawing the inventive method embodiment is described in detail.
At first introduce embodiment one.
Referring to Fig. 3, be embodiment one schematic diagram.Wherein, device A is represented source PBT equipment, and it connects data receiver s by user network, and equipment B and equipment C represent purpose PBT equipment, they connect data receiver r by user network, and equipment B and equipment C backup each other, and also are, for data receiver s and recipient r, equipment B is identical with the setting of equipment C inside, no matter adopt equipment B or equipment C, all can realize data forwarding equally.
As can be seen from Figure 3, set up link between device A and equipment B, wherein, device A is called ESP1 to the link of equipment B, device A is called ESP2 to the link of equipment C, does not all indicate in the link of device A and PBT intermediate equipment figure for slave unit B, equipment C.As source BBT equipment, device A can send to equipment B by ESP1 with the data from data receiver s, also can send to equipment C by ESP2, finally sends to recipient r.
Wherein, the configuration of ESP1 and ESP2 is respectively:
ESP1＝<B-VID(AB)，B-DA(MAC-B)>
ESP2＝<B-VID(AC)，B-DA(MAC-C)>
In practical operation, can on the PBT equipment of source each purpose PBT equipment disposition encapsulation list item, the encapsulation list item can also comprise I-TAG (task identifier) information in expression forwarding territory except the ESP information that comprises above-mentioned expression link.The encapsulation list item of each purpose PBT equipment is formed a protection group; it is interrelated by a guard bit respectively to encapsulate list item in the protection group; wherein; flag bit set (for example 1) with an encapsulation list item; flag bits of all the other encapsulation list items use as default (for example 0); determine to adopt which link to transmit data by the distinguishing mark position; promptly; transmit data by set flag bit link corresponding; when the link of this set or/and when connecting purpose PBT equipment fault; this flag bit promptly becomes default value, at this moment, need select the flag bit set of another encapsulation list item from the protection group; transmit data by this new set list item link corresponding; certainly, the new link of selecting must be normal, promptly determines that by the mode of detection messages link and purpose PBT equipment thereof are all normal.
Be not difficult to find out from foregoing description; so-called active link is relative with the protection link; under default situation, from a plurality of links, select a link as active link, its corresponding flag bit is set to 1; when this link or its purpose of connecting PBT equipment fault; its flag bit promptly can become 0, and this initial active link in fact becomes " protection link ", at this moment; again the what is called of set protection link is responsible for data forwarding, becomes " active link ".
Be example still below, describe the performing step of embodiment one in detail,, be embodiment one flow chart, comprising referring to Fig. 4 with Fig. 3 networking structure:
Step 401: device A is that equipment B and equipment C set up the encapsulation list item respectively, and to encapsulate list item interrelated by flag bit with two be a protection group;
The setting of this protection group is referring to table 1.
Table 1
| Purpose PBT equipment | The encapsulation list item | Flag bit |
| B | {ESP1，I-TAG1} | 1 (set) |
| C | {ESP1，I-TAG2} | 0 (default value) |
Step 402: device A receives from data receiver s, mails to the data of recipient r;
Step 403: behind the device A resolution data, determine next jumping, promptly determine and to give recipient r by equipment B or C with data forwarding;
Step 404: look-up table 1, selection marker position are that 1 equipment B is a purpose PBT equipment;
Step 405: device A sends the data to equipment B by ESP1;
Step 406: equipment B sends the data to data receiver r.
Determine whether normal flow process comprises referring to Fig. 5 for purpose PBT equipment and link thereof:
Step 501: equipment B and equipment C regularly send detection messages to device A respectively;
Step 502: device A judges whether normally to receive the detection messages of equipment B/equipment C in during cycle, if reception is all normal, repeated execution of steps 502 is not if normally receive the detection messages of equipment B, execution in step 503;
Step 503: equipment B is encapsulated the list item flag bit be set to 0 from 1;
Step 504: judge whether normally to receive the detection messages of equipment C, if, execution in step 505, otherwise, illustrating that ESP1 and ESP2 are unavailable, execution in step 506 reports an error;
Step 505: equipment C encapsulation list item flag bit is set to 1 from 0, and flow is switched to ESP2;
Step 506: report an error.
After step 505; after also soon flow will switch on the protection link; also this link is constantly detected; when finding its fault, switch to again on the normal link, the normal link here is meant other protection links; or the active link that recovered of fault; as seen, it is dynamic process that flow switches, as long as current link failure promptly needs to switch on the normal link.
Existing scheme only backs up ESP, can only guarantee when an ESP fault, flow can not be affected, yet, in the real work, the situation of destination device fault can appear unavoidably, adopt method of the present invention, not only can realize the switching of ESP fault, can switch by flow too, further guarantee the fail safe of PBT network for the destination device fault.
With Fig. 3 is example, if the ESP1 fault can switch to ESP2, when the equipment B fault, can switch to ESP2 equally, thereby strengthen network reliability, particularly when equipment B was the forwarding unit of comparison key, the assurance network can not paralysed because of the fault of equipment B.
Introduce embodiment two below.
In embodiment one, can think and to distribute to two destination devices respectively at mutually redundant two ESP of destination device in the existing scheme, and in the present embodiment, still adopt the mode of mutually redundant two ESP in the existing scheme between each destination device and the source device, thereby on the mutually redundant basis of destination device, the ESP of each destination device also backups each other, and improves internet security more.
Referring to Fig. 6, be embodiment two schematic diagrames, it is on the basis of Fig. 3, and to the further backup of ESP1/ESP2, wherein, ESP11 is main standby active link with active link ESP1, and ESP22 is main stand-by protection link with protection link ESP2.
That is to say that in the present embodiment, described active link comprises main with active link and standby active link; Described active link fault is meant the main all faults of active link and standby active link of using.
Described protection link comprises main with protection link and stand-by protection link, described flow is switched on the protection link, is at first flow to be switched to mainly with on the protection link,, flow is switched on the stand-by protection link during with protection link also fault when main again.
Corresponding with said method, the present invention also provides a kind of PBT network traffics control device, be source PBT equipment, an or functional entity in the PBT equipment of source, it is connected with two mutually redundant purpose PBT equipment at least, referring to Fig. 7, described device comprises link configuration unit 701, Link State judging unit 702 and flow controlling unit 703.
Link configuration unit 701, being used to dispose described device is active link with the link that a purpose PBT equipment is connected, and disposes the link that described device is connected with all the other purpose PBT equipment and is the protection link;
Link State judging unit 702 is used to judge whether each link and purpose of connecting PBT equipment thereof is normal;
Flow controlling unit 703, when active link fault and the purpose of connecting PBT of active link institute equipment just often, control described device by the active link converting flow, otherwise, flow is switched on the normal protection link.
Wherein, described Link State judges that Unit 702 further comprise: timing unit 7021 is used to be provided with the cycle that receives detection messages; Receiving element 7022 is used to receive the detection messages that purpose PBT equipment sends; Judging unit 7023, be used to judge whether described receiving element 7022 normally receives detection messages in the cycle that described timing unit 7021 presets, if determine that this purpose PBT equipment and link thereof are normal, otherwise, determine purpose PBT equipment or/and link failure.
In addition, preferably, described active link comprises main with active link and standby active link; Described protection link comprises main with protection link and stand-by protection link.Thereby can realize the backup of ESP at each purpose PBT equipment, the fail safe that further improves network.
Specific implementation details about device can not repeat to give unnecessary details at this referring to method embodiment.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. PBT method for controlling network flow, described PBT network comprises source PBT equipment and purpose PBT equipment, it is characterized in that, described purpose PBT equipment is at least two and backup each other; Described method comprises:
Link between source of configuration PBT equipment and the purpose PBT equipment is an active link, and the link that disposes between described source PBT equipment and all the other the purpose PBT equipment is the protection link;
When active link and the purpose of connecting PBT of active link institute equipment all just often, by the active link converting flow, when the active link fault or/and during the purpose of connecting PBT of active link institute equipment fault, flow is switched on the normal protection link.
2. according to the described method of claim 1, it is characterized in that, determine link or/and the purpose of connecting PBT of link institute equipment is normal or fault by following steps:
Each purpose PBT equipment regularly sends detection messages to source PBT equipment;
When described source PBT equipment receives the detection messages of certain purpose PBT equipment in during cycle, determine that this purpose PBT equipment and link thereof are normal;
When described source PBT equipment is not received certain purpose PBT Equipment Inspection message in during cycle, determine that this purpose PBT equipment is or/and link failure.
3. according to the described method of claim 1, it is characterized in that, flow is switched to the protection link on after, also comprise:
When determining this protection link failure, flow is switched on other protection links, perhaps switch on the active link that fault recovered.
4. according to the described method of claim 1, it is characterized in that described active link comprises main with active link and standby active link; Described active link fault is meant the main all faults of active link and standby active link of using.
5. according to the described method of claim 4; it is characterized in that; described protection link comprises main with protection link and stand-by protection link; described flow is switched to protected on the link; be at first flow to be switched to main using on the protection link; when leading, again flow is switched on the stand-by protection link with protection link also fault.
6. according to claim 1,2,3,4 or 5 described methods, it is characterized in that,, realize that by following steps flow switches at source PBT equipment side:
Be respectively each link-attached purpose PBT equipment and set up the encapsulation list item, and these a plurality of encapsulation list items are set up the protection group with association;
In a protection group, for each encapsulation list item is provided with flag bit, wherein, except that the flag bit set with the encapsulation list item of active link, flag bits of all the other encapsulation list items all are default value;
When the active link fault or/and the purpose of connecting PBT of active link institute equipment when breaking down; the flag bit of active link is used as default; then from described protection group selection another one encapsulation list item; and, at last flow is switched on the encapsulation list item link corresponding of this new set its flag bit set.
7. according to the described method of claim 6, it is characterized in that described encapsulation list item is by the ESP information of determining link and determine that the I-TAG information of transmitting the territory constitutes.
8. a PBT network traffics control device is characterized in that, this device is connected with at least two mutually redundant purpose PBT equipment, and described device comprises:
The link configuration unit, being used to dispose described device is active link with the link that a purpose PBT equipment is connected, and disposes the link that described device is connected with all the other purpose PBT equipment and is the protection link;
The Link State judging unit is used to judge whether each link and purpose of connecting PBT equipment thereof is normal;
Flow controlling unit, when active link and the purpose of connecting PBT of active link institute equipment all just often, control described device by the active link converting flow, otherwise, flow is switched on the normal protection link.
9. described according to Claim 8 device is characterized in that, described Link State judging unit further comprises:
Timing unit is used to be provided with the cycle that receives detection messages;
Receiving element is used to receive the detection messages that purpose PBT equipment sends;
Judging unit is used to judge whether described receiving element normally receives detection messages in the cycle that described timing unit presets, if, determine that this purpose PBT equipment and link thereof are normal, otherwise, determine purpose PBT equipment or/and link failure.
10. according to Claim 8 or 9 described devices, it is characterized in that described active link comprises main with active link and standby active link; Described protection link comprises main with protection link and stand-by protection link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101875072A CN101159696A (en) | 2007-11-21 | 2007-11-21 | PBT network flow control method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101875072A CN101159696A (en) | 2007-11-21 | 2007-11-21 | PBT network flow control method and apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101159696A true CN101159696A (en) | 2008-04-09 |
Family
ID=39307621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101875072A Pending CN101159696A (en) | 2007-11-21 | 2007-11-21 | PBT network flow control method and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101159696A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103200107A (en) * | 2013-04-15 | 2013-07-10 | 杭州华三通信技术有限公司 | Message transmitting method and message transmitting equipment |
| CN103701701A (en) * | 2013-12-31 | 2014-04-02 | 杭州华三通信技术有限公司 | Method and device for ECT (Equal Cost Tree) migration management |
| WO2014059931A1 (en) * | 2012-10-16 | 2014-04-24 | Hangzhou H3C Technologies Co., Ltd. | Forwarding packets |
| CN106803803A (en) * | 2015-11-26 | 2017-06-06 | 财团法人工业技术研究院 | Virtual local area network restoration method, system and device |
| WO2017206785A1 (en) * | 2016-06-02 | 2017-12-07 | 中兴通讯股份有限公司 | Network element, protection switching method and system, and storage medium |
| CN109714325A (en) * | 2018-12-19 | 2019-05-03 | 北京奇安信科技有限公司 | A kind of one-way optical gate data transmission method, system, electronic equipment and medium |
-
2007
- 2007-11-21 CN CNA2007101875072A patent/CN101159696A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014059931A1 (en) * | 2012-10-16 | 2014-04-24 | Hangzhou H3C Technologies Co., Ltd. | Forwarding packets |
| US9521068B2 (en) | 2012-10-16 | 2016-12-13 | Hewlett Packard Enterprise Development Lp | Forwarding packets |
| CN103200107A (en) * | 2013-04-15 | 2013-07-10 | 杭州华三通信技术有限公司 | Message transmitting method and message transmitting equipment |
| CN103200107B (en) * | 2013-04-15 | 2017-04-12 | 杭州华三通信技术有限公司 | Message transmitting method and message transmitting equipment |
| CN103701701A (en) * | 2013-12-31 | 2014-04-02 | 杭州华三通信技术有限公司 | Method and device for ECT (Equal Cost Tree) migration management |
| CN103701701B (en) * | 2013-12-31 | 2017-04-12 | 杭州华三通信技术有限公司 | Method and device for ECT (Equal Cost Tree) migration management |
| CN106803803A (en) * | 2015-11-26 | 2017-06-06 | 财团法人工业技术研究院 | Virtual local area network restoration method, system and device |
| CN106803803B (en) * | 2015-11-26 | 2019-11-15 | 财团法人工业技术研究院 | Virtual local area network restoration method, system and device |
| WO2017206785A1 (en) * | 2016-06-02 | 2017-12-07 | 中兴通讯股份有限公司 | Network element, protection switching method and system, and storage medium |
| CN107465527A (en) * | 2016-06-02 | 2017-12-12 | 中兴通讯股份有限公司 | A kind of network element, pretection switch method and its system |
| CN109714325A (en) * | 2018-12-19 | 2019-05-03 | 北京奇安信科技有限公司 | A kind of one-way optical gate data transmission method, system, electronic equipment and medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8085670B2 (en) | Method and system for originating connectivity fault management (CFM) frames on non-CFM aware switches | |
| CN101051995B (en) | Protection switching method based on no connection network | |
| CN100454853C (en) | Method for service channel detection and system for providing the same | |
| US7697440B2 (en) | Scalable selective alarm suppression for data communication network | |
| EP0452466B1 (en) | Automatic fault recovery in a packet network | |
| CN101505246B (en) | Fault detection and recovery method for network tunnel sectional protection mode | |
| CN101652963B (en) | Method for reconfiguring a communications network | |
| US20120127855A1 (en) | Method and device for conveying traffic | |
| US20120106321A1 (en) | Method and device for conveying traffic in a network | |
| CN104956628A (en) | Using Ethernet ring protection switching with computer networks | |
| CN101364926A (en) | Method and apparatus for network protection | |
| CN101227399B (en) | Message transmission method, system and forwarding node | |
| CN101159696A (en) | PBT network flow control method and apparatus | |
| CN102104486A (en) | Switching hub, line card and frame relay method | |
| CN101193052A (en) | Method and system for sub-network connection protection in multi-protocol label switching | |
| CN102349277A (en) | Intrusion detection for virtual layer-2 services | |
| CN101924654A (en) | Point-to-multipoint service-based path switching method and system | |
| EP2521275B1 (en) | Method and device for tunnel protection | |
| US8400910B1 (en) | Associated tunnels terminating on different packet switches and relaying packets via different tunnel combinations | |
| CN101908983A (en) | Joint detection method and system for Ethernet local segment protection | |
| CN101686167A (en) | Method for controlling recovery of faults of Ethernet | |
| CN105634848A (en) | Virtual router monitoring method and apparatus | |
| US8724478B2 (en) | Network device and network system | |
| CN108462637A (en) | One kind being routed back to blanking method, controller and system | |
| US20110116384A1 (en) | Network connectivity management |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20080409 |