CN105429814B - Method and equipment for protecting BFD (bidirectional forwarding detection) by using multiple board cards - Google Patents
Method and equipment for protecting BFD (bidirectional forwarding detection) by using multiple board cards Download PDFInfo
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- CN105429814B CN105429814B CN201410476530.3A CN201410476530A CN105429814B CN 105429814 B CN105429814 B CN 105429814B CN 201410476530 A CN201410476530 A CN 201410476530A CN 105429814 B CN105429814 B CN 105429814B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
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- H04L45/247—Multipath using M:N active or standby paths
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Abstract
The invention provides a method for protecting BFD by using a plurality of board cards, which is applied to BFD equipment and comprises the steps of setting a main service processing board card and at least one standby service processing board card; detecting whether the main service processing board card is offline, if so, switching one standby service processing board card into a new main service processing board card; receiving a BFD message and a non-BFD ordinary IP forwarding message from an interface card; and simultaneously sending the BFD message to a new main service processing board card and other standby service processing board cards, and delivering the non-BFD ordinary IP forwarding message to the new main service processing board card. The invention also provides equipment for protecting BFD by using the multi-board card. The method for protecting BFD by using multiple board cards has the advantages of quickly, efficiently and stably protecting BFD between boards, thereby ensuring that services are not interrupted.
Description
Technical Field
The present invention relates to the field of Bidirectional transmission Detection, and in particular, to a method and an apparatus for Bidirectional Forwarding Detection (BFD) protection using multiple boards.
Background
With the development of science and technology and times, the ethernet technology gradually becomes an important technical means for social production and office. Particularly, as the holding amount of the smart terminal rapidly increases, the mobile internet industry is becoming mature. The wireless network is developed to All-IP (All-IP) network, and more demands are made that convergence layer equipment has large capacity and a fast service reply mechanism, so that the service is ensured to be uninterrupted and highly reliable. The traditional ethernet convergence layer device is usually equipped with a service processing board card and a plurality of service interface cards, so that certain security problems exist. When a service board card of convergence layer equipment fails, all services hung down by the service board card are interrupted. Meanwhile, a single service processing board card may cause service interruption when upgrading convergence layer equipment.
Therefore, some inter-board protection technologies, such as L AG (L ink Aggregation Group), have appeared, but such protection technologies have some bottlenecks and defects, which can only protect the related traffic on the device, and cannot handle the detection traffic and alarms of BFD well.
Disclosure of Invention
The invention mainly aims to provide a method and equipment for protecting BFD (bidirectional forwarding detection) by using multiple board cards, aiming at quickly, efficiently and stably protecting the BFD among boards.
In order to achieve the above object, the method for protecting BFD using multiple board cards provided by the present invention is applied to BFD equipment, and comprises the following steps:
setting a main service processing board card and at least one standby service processing board card;
detecting whether the main service processing board card is offline, if so, switching one standby service processing board card into a new main service processing board card;
receiving a BFD message and a non-BFD ordinary IP forwarding message from an interface card;
and simultaneously sending the BFD message to a new main service processing board card and other standby service processing board cards, and delivering the non-BFD ordinary IP forwarding message to the new main service processing board card.
Preferably, the step of sending the BFD packet to a new active service processing board and other standby service processing boards simultaneously, and delivering the non-BFD normal IP forwarding packet to the new active service processing board specifically includes:
receiving BFD messages on a new main service processing board card for keeping alive; and receiving the BFD message on the standby service processing board card without keeping alive.
Preferably, the step of sending the BFD packet to a new active service processing board and other standby service processing boards simultaneously, and delivering the non-BFD normal IP forwarding packet to the new active service processing board further includes:
and if the new main service processing board card does not receive the keep-alive packet in the detection period, reporting an alarm, triggering switching, cutting the standby service processing board card into the new main service processing board card, and sending a BFD message to the remote equipment to keep-alive the remote equipment BFD.
Preferably, the step of sending the BFD packet to a new active service processing board and other standby service processing boards simultaneously, and delivering the non-BFD normal IP forwarding packet to the new active service processing board further includes:
if the standby service processing board card does not receive the keep-alive packet in the detection period, no alarm is reported, no switching is triggered, and no BFD message is actively sent.
Preferably, the step of detecting the operating condition of the current board card, and if it is detected that the current board card is offline and is the active service processing board card, switching the standby service processing board card to the active service processing board card further includes:
and if the offline service processing board card is detected to be on-line again, setting the service processing board card on-line again as a new standby service processing board card, and simultaneously sending the BFD message to the new standby service processing board card.
In order to solve the above technical problem, the present invention further provides an apparatus for protecting BFD using multiple boards, where the apparatus for protecting BFD using multiple boards includes:
the setting module is used for setting a main service processing board card and at least one standby service processing board card;
the switching module is used for detecting whether the main service processing board card is offline, and if so, switching one standby service processing board card into a new main service processing board card;
the receiving module is used for receiving the BFD message and the non-BFD ordinary IP forwarding message from the interface card;
and the transmission module is used for simultaneously sending the BFD message to a new main service processing board card and other standby service processing board cards and delivering the non-BFD ordinary IP forwarding message to the new main service processing board card.
Preferably, the transmission module is specifically configured to receive a BFD packet for keep-alive on the new active service processing board; and receiving the BFD message on the standby service processing board card without keeping alive.
Preferably, the switching module is further configured to report an alarm when the main service processing board does not receive the keep-alive packet in the detection period, trigger switching, cut off the standby service processing board as a new main service processing board, and send a BFD packet to the remote device to keep-alive the remote device BFD.
Preferably, the switching module is further configured to not report an alarm, not trigger switching, and not actively send a BFD packet if the standby service processing board does not receive the keep-alive packet in the detection period.
Preferably, the setting module is further configured to, if it is detected that the offline service processing board card is brought online again, set the service processing board card brought online again as a new standby service processing board card, and send the BFD packet to the new standby service processing board card at the same time.
The invention provides a method for protecting BFD by using a plurality of board cards, which is applied to BFD equipment and comprises the steps of setting a main service processing board card and at least one standby service processing board card; detecting whether the main service processing board card is offline, if so, switching one standby service processing board card into a new main service processing board card; receiving a BFD message and a non-BFD ordinary IP forwarding message from an interface card; and simultaneously sending the BFD message to a new main service processing board card and other standby service processing board cards, and delivering the non-BFD common IP forwarding message to the new main service processing board card. The method for protecting BFD by using multiple board cards has the advantages of quickly, efficiently and stably protecting BFD between boards and ensuring no interruption of service.
Drawings
Fig. 1 is a schematic flow chart illustrating a first embodiment of a method for protecting BFD using multiple board cards according to the present invention;
fig. 2 is a detailed flow diagram of the step of sending the BFD packet to a new main service processing board card and other standby service processing board cards simultaneously and delivering the non-BFD normal IP forwarding packet to the new main service processing board card in the method for protecting BFD by using multiple board cards according to the present invention;
FIG. 3 is a flowchart illustrating a second embodiment of a BFD protection method using multiple boards according to the present invention;
FIG. 4 is a flowchart illustrating a third embodiment of a BFD protection method using multiple boards according to the present invention;
FIG. 5 is a flowchart illustrating a fourth embodiment of a BFD protection method using multiple boards according to the present invention;
fig. 6 is a functional block diagram of a device for protecting BFD using multiple board cards according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The present invention provides a method for protecting BFD using multiple board cards, as shown in fig. 1, in a first embodiment, the method for protecting BFD using multiple board cards includes:
step S100, setting a main service processing board card and at least one standby service processing board card.
The interface card of the BFD equipment is provided with a plurality of board cards, wherein a selector of the BFD equipment sets one of the board cards as a main service processing board card, other board cards are set as standby service processing board cards, the main service processing board card is used for realizing the bidirectional transmission of services of the main BFD equipment and the far-end BFD equipment, and the standby service processing board cards are mainly used as service storage board cards of the main service processing board cards.
Step S200, detecting whether the active service processing board card is offline, and if so, switching one of the standby service processing board cards to a new active service processing board card.
The BFD equipment detects the working condition of the current board card, if the main service processing board card is off-line due to blockage and the like, when the BFD equipment detects that the current board card is the main service processing board card and works in an off-line state, one board card of the standby service processing board cards on line is directly switched to a new main service processing board card.
And step S300, receiving the BFD message, the non-BFD ordinary IP forwarding message and the non-BFD ordinary IP forwarding message from the interface card.
The BFD equipment receives messages from an interface card, wherein the messages comprise BFD messages and non-BFD ordinary IP forwarding messages. The BFD packet refers to various transmission protocol packets carrying contents related to the BFD protocol, or the payload part in these protocol packets carries contents related to the BFD protocol. The non-BFD normal IP forwarding packet referred to herein refers to a normal IP forwarding packet other than the BFD packet.
Step S400, the BFD message is sent to a new main service processing board card and other standby service processing board cards simultaneously, and the non-BFD ordinary IP forwarding message is delivered to the new main service processing board card.
If the BFD equipment detects that the current board card is on-line, the BFD equipment receives the BFD message and the non-BFD ordinary IP forwarding message sent by the selector, simultaneously sends the BFD message to a new main service processing board card and other standby service processing board cards, and delivers the non-BFD ordinary IP forwarding message to the new main service processing board card. Therefore, the non-BFD common IP forwarding message is quickly transmitted between the main service processing board card and the far-end BFD equipment, and the service processing is completed.
In the method for protecting BFD by using multiple board cards provided in this embodiment, a main service processing board card and at least one standby service processing board card are set; detecting whether the main service processing board card is offline, if so, switching one standby service processing board card into a new main service processing board card; receiving a BFD message and a non-BFD ordinary IP forwarding message from an interface card; and simultaneously sending the BFD message to a new main service processing board card and other standby service processing board cards, and delivering the non-BFD ordinary IP forwarding message to the new main service processing board card, thereby realizing the beneficial effects of quickly, efficiently and stably protecting the BFD between the boards and ensuring that the service is not interrupted.
As shown in fig. 2, step S200 specifically includes:
step S200A, receiving BFD message to keep alive on the new main service processing board card; and receiving the BFD message on the standby service processing board card without keeping alive.
If the BFD equipment detects that the current board card is on-line and is the main service processing board card, the BFD message sent by the receiving selector ensures that the local BFD is in a keep-alive state, and if the BFD equipment detects that the current board card is on-line and is the standby service processing board card, the BFD message is received but is not kept alive, so that when the current board card fails, the BFD equipment is switched in time, and the local BFD message is sent to the remote BFD equipment in time. Keep-alive refers to sending a self-defined structure body (for example, keep-alive packet or heartbeat packet) at regular time, and letting the remote device know that it is still alive, so as to ensure the validity of connection.
As shown in fig. 3, in the second embodiment, on the basis of the first embodiment shown in fig. 1, after the step S400, the method further includes:
step S500, if the new main service processing board card does not receive the keep-alive packet in the detection period, reporting an alarm, triggering switching, cutting the standby service processing board card into the new main service processing board card, and sending a BFD message to the remote equipment to keep-alive the remote equipment BFD.
And the BFD equipment presets a detection period, if the main service processing board card does not receive the keep-alive packet in the detection period, the BFD equipment reports an alarm, switches the on-line standby service processing board card to a current new main service processing board card and sends a BFD message to the remote equipment to keep-alive the remote equipment BFD. The BFD equipment provides a consistent timing detection period of overtime protection, thereby accelerating the network convergence speed, reducing the application relay time and improving the network reliability.
As shown in fig. 4, on the basis of the first embodiment shown in fig. 1, in the third embodiment, after the step S400, the method further includes:
step S600, if the standby service processing board card does not receive the keep-alive packet in the detection period, no alarm is reported, no switching is triggered, and no BFD message is actively sent.
And presetting a detection period by the BFD equipment, if the standby service processing board card does not receive the keep-alive packet in the detection period, not reporting an alarm, not triggering switching, and not actively sending a BFD message to the remote equipment to keep the remote equipment BFD alive. The standby service processing board card is used as the storage of the main service processing board card, is normally inactive, does not perform service transmission, and is switched in time once the current main service processing board card fails, so that the local-end BFD message is sent to the remote BFD equipment in time to keep alive, thereby ensuring that the service is not interrupted.
As shown in fig. 5, in the fourth embodiment, on the basis of the first embodiment shown in fig. 1, after the step S400, the method further includes:
step S700, if it is detected that the offline service processing board card is on-line again, setting the service processing board card on-line again as a new standby service processing board card, and sending the BFD message to the new standby service processing board card at the same time.
And if the BFD equipment detects that the offline board card is on-line again, setting the off-line board card as a new standby service processing board card, simultaneously sending BFD messages to the standby service processing board card but not keeping alive, waiting at any time when the current board card has a fault, switching timely, and sending the local BFD messages to remote BFD equipment timely to realize the purpose of quickly stabilizing the network.
In the method for protecting BFD by using multiple boards provided by this embodiment, when the main service processing board fails, the local BFD device can be switched quickly without sensing by the remote BFD device, so as to avoid BFD abnormality and reconstruction problems caused by the failure of BFD protection, thereby ensuring the stability of BFD detection and further avoiding the change of network state, and ensuring the stability of network flow.
Further referring to fig. 6, this embodiment further provides an apparatus for protecting BFD using multiple boards, where the apparatus for protecting BFD using multiple boards includes:
a setting module 10, configured to set a main service processing board card and at least one standby service processing board card;
a switching module 20, configured to detect whether the main service processing board card is offline, and if so, switch one of the standby service processing board cards to a new main service processing board card;
a receiving module 30, configured to receive a BFD packet and a non-BFD normal IP forwarding packet from an interface card;
and a transmission module 40, configured to send the BFD packet to a new primary service processing board and other standby service processing boards simultaneously, and deliver the non-BFD normal IP forwarding packet to the new primary service processing board.
The interface card of the BFD device is provided with a plurality of board cards, wherein the setting module 10 of the selector of the BFD device sets one of the board cards as a main service processing board card, and the other board cards as standby service processing board cards, the main service processing board card is used for realizing bidirectional transmission of services of the main BFD device and the remote BFD device, and the standby service processing board card is mainly used as a service storage board card of the main service processing board card.
The switching module 20 of the BFD device detects the working condition of the current board card, and if the main service processing board card is off-line due to blockage or the like, when the BFD device detects that the current board card is the main service processing board card and works in an off-line state, the BFD device directly switches one of the other on-line standby service processing board cards to a new main service BFD device to receive a message from the interface card, where the message includes a BFD message and a non-BFD normal IP forwarding message. The BFD packet refers to various transmission protocol packets carrying contents related to the BFD protocol, or the payload part in these protocol packets carries contents related to the BFD protocol. The non-BFD normal IP forwarding packet referred to herein refers to a normal IP forwarding packet other than the BFD packet.
The receiving module 30 of the BFD device receives messages from the interface card, where the messages include BFD messages and non-BFD normal IP forwarding messages. The BFD packet refers to various transmission protocol packets carrying contents related to the BFD protocol, or the payload part in these protocol packets carries contents related to the BFD protocol. The non-BFD normal IP forwarding packet referred to herein refers to a normal IP forwarding packet other than the BFD packet.
If the BFD device detects that the current board card is on-line, the receiving module 30 receives the BFD packet and the non-BFD normal IP forwarding packet sent by the selector, and the transmitting module 40 sends the BFD packet to the new active service processing board card and other standby service processing board cards at the same time, and delivers the non-BFD normal IP forwarding packet to the new active service processing board card. Therefore, the non-BFD common IP forwarding message is quickly transmitted between the main service processing board card and the far-end BFD equipment, and the service processing is completed.
The device for protecting BFD by using multiple board cards provided by the embodiment has the beneficial effects that the BFD is protected between boards quickly, efficiently and stably, and the service is ensured not to be interrupted.
Referring to fig. 6, the transmission module 40 in this embodiment is specifically configured to receive a BFD packet for keep-alive on a new active service processing board; and receiving the BFD message on the standby service processing board card but not keeping alive.
If the transmission module 40 of the BFD device detects that the current board card is on-line and is the main service processing board card, the receiving selector sends the BFD message to ensure that the local BFD is in a keep-alive state, and if the BFD device detects that the current board card is on-line and is the standby service processing board card, the BFD device receives the BFD message but does not keep-alive, so that when the current board card fails, the BFD device is switched in time, and the local BFD message is sent to the remote BFD device in time. Keep-alive means that a self-defined structure body (for example, keep-alive packet or heartbeat packet) is sent regularly, and the remote device is made to know that the remote device is still alive, so as to ensure the validity of connection.
Referring to fig. 6, the switching module 30 in this embodiment is further configured to report an alarm if the new active service processing board does not receive the keep-alive packet in the detection period, trigger switching, cut the standby service processing board into the new active service processing board, and send a BFD packet to the remote device to keep-alive the remote device BFD.
The switching module 30 of the BFD device presets a detection period, and if the active service processing board card does not receive the keep-alive packet in the detection period, reports an alarm and switches the standby service processing board card on line to the current new active service processing board card, and sends a BFD packet to the remote device to keep-alive the remote device BFD. The BFD equipment provides a consistent timing detection period of overtime protection, thereby accelerating the network convergence speed, reducing the application relay time and improving the network reliability.
Referring to fig. 6, the switching module 30 in this embodiment is further configured to not report an alarm, not trigger switching, and not actively send a BFD packet if the standby service processing board does not receive the keep-alive packet in the detection period.
The switching module 30 of the BFD device presets a detection period, and if the standby service processing board card does not receive the keep-alive packet in the detection period, it does not report an alarm, does not trigger switching, and does not actively send a BFD message to the remote device to keep-alive the remote device BFD. The standby service processing board card is used as the storage of the main service processing board card, is normally inactive, does not perform service transmission, and is switched in time once the current main service processing board card fails, so that the local-end BFD message is sent to the remote BFD equipment in time to keep alive, thereby ensuring that the service is not interrupted.
Referring to fig. 6, the setting module 10 in this embodiment is further configured to, if it is detected that the offline service processing board card is online again, set the service processing board card online again as a new standby service processing board card, and send the BFD packet to the new standby service processing board card at the same time.
If the setting module 10 of the BFD equipment detects that the offline board card is on-line again, the off-line board card is set as a new standby service processing board card, and the BFD messages are simultaneously sent to the standby service processing board card but are not kept alive, so that standby and timely switching are performed at any time when the current board card fails, and the local BFD messages are timely sent to the remote BFD equipment, so as to achieve the purpose of quickly stabilizing the network.
In the device for protecting BFD by using multiple board cards provided by this embodiment, when the main service processing board card fails, the local BFD device can be switched quickly without sensing the remote BFD device, so as to avoid BFD abnormality and reconstruction problems caused by failure of BFD protection, thereby ensuring stability of BFD detection and further avoiding change of network state, and ensuring stability of network flow.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A method for protecting Bidirectional Forwarding Detection (BFD) by using multiple board cards is applied to BFD equipment, and is characterized in that the method for protecting the BFD by using the multiple board cards comprises the following steps:
setting a main service processing board card and at least one standby service processing board card;
detecting whether the main service processing board card is offline, if so, switching one standby service processing board card into a new main service processing board card;
receiving a BFD message and a non-BFD ordinary IP forwarding message from an interface card;
and simultaneously sending the BFD message to a new main service processing board card and other standby service processing board cards, and sending the non-BFD ordinary IP forwarding message to the new main service processing board card.
2. The method for protecting BFD using multiple boards as claimed in claim 1, wherein said sending the BFD packet to a new active service processing board and other standby service processing boards simultaneously, and said step of sending the non-BFD normal IP forwarding packet to the new active service processing board specifically comprises:
receiving BFD messages on a new main service processing board card for keeping alive; and receiving the BFD message on the standby service processing board card without keeping alive.
3. The method according to claim 1 or 2, wherein the step of sending the BFD packet to the new active service processing board and other standby service processing boards simultaneously, and the step of sending the non-BFD normal IP forwarding packet to the new active service processing board further includes:
and if the new main service processing board card does not receive the keep-alive packet in the detection period, reporting an alarm, triggering switching, switching the standby service processing board card to the new main service processing board card, and sending a BFD message to the remote equipment to keep-alive the remote equipment BFD.
4. The method according to claim 3, wherein the step of sending the BFD packet to the new active service processing board and other standby service processing boards simultaneously, and the step of sending the non-BFD normal IP forwarding packet to the new active service processing board further includes:
if the standby service processing board card does not receive the keep-alive packet in the detection period, no alarm is reported, no switching is triggered, and no BFD message is actively sent.
5. The method for protecting BFD using multiple boards as claimed in claim 1, wherein the step of switching one of said standby service processing boards to a new active service processing board further comprises, after said step of switching one of said standby service processing boards to a new active service processing board:
and if the offline service processing board card is detected to be on-line again, setting the service processing board card on-line again as a new standby service processing board card, and simultaneously sending the BFD message to the new standby service processing board card.
6. The utility model provides an utilize many integrated circuit boards to protect equipment that bidirectional forwarding detected BFD, its characterized in that, utilize many integrated circuit boards to protect equipment that BFD includes:
the setting module is used for setting a main service processing board card and at least one standby service processing board card;
the switching module is used for detecting whether the main service processing board card is offline, and if so, switching one standby service processing board card into a new main service processing board card;
the receiving module is used for receiving the BFD message and the non-BFD ordinary IP forwarding message from the interface card;
and the transmission module is used for simultaneously transmitting the BFD message to a new main service processing board card and other standby service processing board cards and transmitting the non-BFD ordinary IP forwarding message to the new main service processing board card.
7. The device for protecting BFD using a multi-board card according to claim 6, wherein the transmission module is specifically configured to receive a BFD packet and keep alive on the new active service processing board card; and receiving the BFD message on the standby service processing board card without keeping alive.
8. The device for protecting BFD using multiple boards as claimed in claim 6 or 7, wherein the switching module is further configured to report an alarm if the new active service processing board does not receive the keep-alive packet in the detection period, trigger switching, switch the standby service processing board to the new active service processing board, and send a BFD packet to the remote device to keep-alive the remote device BFD.
9. The device for protecting BFD using multiple boards as claimed in claim 8, wherein the switching module is further configured to not report an alarm, not trigger switching, and not actively send a BFD message if the standby service processing board does not receive the keep-alive packet in the detection period.
10. The apparatus for protecting BFD using multiple boards of claim 6, wherein the setting module is further configured to set the offline service processing board as a new standby service processing board if it is detected that the offline service processing board is online again, and send the BFD message to the new standby service processing board at the same time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410476530.3A CN105429814B (en) | 2014-09-17 | 2014-09-17 | Method and equipment for protecting BFD (bidirectional forwarding detection) by using multiple board cards |
| PCT/CN2014/091168 WO2015131548A1 (en) | 2014-09-17 | 2014-11-14 | Method for protecting bfd, and device |
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| CN201410476530.3A CN105429814B (en) | 2014-09-17 | 2014-09-17 | Method and equipment for protecting BFD (bidirectional forwarding detection) by using multiple board cards |
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| CN105429814B true CN105429814B (en) | 2020-08-04 |
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| CN107612754B (en) * | 2017-10-30 | 2021-07-06 | 新华三技术有限公司 | Bidirectional forwarding link fault detection method and device and network node equipment |
| CN109039520B (en) * | 2018-06-15 | 2020-09-04 | 上海欣诺通信技术股份有限公司 | Cross-board card communication method, optical communication system and computer storage medium |
| CN110875880B (en) * | 2018-08-29 | 2022-03-25 | 北京华为数字技术有限公司 | Data transmission method, related equipment, system and computer storage medium |
| CN109547274A (en) * | 2019-01-28 | 2019-03-29 | 新华三技术有限公司 | A kind of enclosure board switching method, device and first network equipment |
| CN111669280B (en) * | 2019-03-06 | 2023-05-16 | 中兴通讯股份有限公司 | Message transmission method, device and storage medium |
| CN109981407B (en) * | 2019-03-25 | 2021-02-09 | 新华三技术有限公司 | Anti-attack message method and device |
| CN114710332B (en) * | 2022-03-23 | 2023-09-15 | 新华三技术有限公司 | License anti-cloning method and device |
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| CN101465859A (en) * | 2009-01-13 | 2009-06-24 | 中兴通讯股份有限公司 | Method and device for triggering main and standby interface board inverse switch |
| US7990852B1 (en) * | 2008-08-14 | 2011-08-02 | Tellabs San Jose, Inc. | Methods and apparatus for improving network communication using BFD and VRRP tracking system |
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| CN105471610B (en) * | 2014-09-05 | 2020-03-17 | 中兴通讯股份有限公司 | Method and device for protecting HQoS (high-quality QoS) by using multiple board cards |
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| CN101035057A (en) * | 2007-03-30 | 2007-09-12 | 华为技术有限公司 | Method for establishing the multicast share tree and data transfer method and communication network |
| US7990852B1 (en) * | 2008-08-14 | 2011-08-02 | Tellabs San Jose, Inc. | Methods and apparatus for improving network communication using BFD and VRRP tracking system |
| CN101442485A (en) * | 2008-12-18 | 2009-05-27 | 华为技术有限公司 | Method, apparatus and system for forwarding multicast |
| CN101465859A (en) * | 2009-01-13 | 2009-06-24 | 中兴通讯股份有限公司 | Method and device for triggering main and standby interface board inverse switch |
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