CN113709273B - Address migration method, communication equipment and dual-activity system - Google Patents

Address migration method, communication equipment and dual-activity system Download PDF

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Publication number
CN113709273B
CN113709273B CN202111011605.7A CN202111011605A CN113709273B CN 113709273 B CN113709273 B CN 113709273B CN 202111011605 A CN202111011605 A CN 202111011605A CN 113709273 B CN113709273 B CN 113709273B
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card
service
mac address
time
cards
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CN113709273A (en
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胡祖松
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Maipu Communication Technology Co Ltd
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Maipu Communication Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5084—Providing for device mobility
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
    • H04J3/0658—Clock or time synchronisation among packet nodes
    • H04J3/0661—Clock or time synchronisation among packet nodes using timestamps
    • 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
    • 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
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0803—Configuration setting
    • H04L41/0823—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2101/00—Indexing scheme associated with group H04L61/00
    • H04L2101/60—Types of network addresses
    • H04L2101/618—Details of network addresses
    • H04L2101/622—Layer-2 addresses, e.g. medium access control [MAC] addresses

Abstract

The application provides an address migration method, communication equipment and a dual-activity system. The dual-active system includes a primary communication device and a backup communication device. The method comprises the following steps: determining M service cards in the main communication equipment, and correcting time between respective operation time lengths of the M service cards and a second main control card and N service cards in the backup communication equipment and operation time lengths of a first main control card in the main communication equipment; when any port of any one of the M service cards and the N service cards learns the MAC address, determining a synchronous time stamp when the MAC address is learned by any service card according to the correction time corresponding to the service card; and when the migration condition is met, the target service card migrates the MAC address according to the synchronous time stamp. Therefore, the MAC address migration of each service card in the dual-activity system can be realized without deploying a time server, the system frame is simplified, and the maintenance cost is reduced.

Description

Address migration method, communication equipment and dual-activity system
Technical Field
The present application relates to the field of data communications, and in particular, to an address migration method, a communication device, and a dual-activity system.
Background
In the field of data communication, communication devices are the foundation and bridge for data forwarding, and the communication devices forward data through MAC (Media Access Control ) addresses. The MAC address table in the communication device records the correspondence between the MAC addresses of other devices and interfaces learned by the switch, and information such as the VLAN (Virtual Local Area Network ) to which the interfaces belong. When the communication equipment forwards the message, inquiring an MAC address table according to the destination MAC address of the message, and if the MAC address table contains a table entry corresponding to the destination MAC address of the message, forwarding the message directly through an outgoing interface in the table entry; if the MAC address table does not contain the table item corresponding to the message destination MAC address, the communication equipment forwards the message by adopting a broadcasting mode in the VLAN except all interfaces except the receiving interface. The MAC address migration refers to a phenomenon that two ports in one VLAN on a communication device learn the same MAC address, and then the learned MAC address entry covers the original MAC address entry.
Currently, in the address migration process, a time server is usually required to be deployed, and by relying on a time protocol of a third party, the time of each board card in the communication device is synchronized, which increases the complexity and maintenance cost of network maintenance.
Disclosure of Invention
The embodiment of the application aims to provide an address migration method, communication equipment and dual-activity system, which can avoid the need of deploying a time server in the address migration process, and are beneficial to simplifying the architecture of the system and reducing the maintenance cost.
In order to achieve the above object, an embodiment of the present application is achieved by:
in a first aspect, an embodiment of the present application provides an address migration method, which is applied to a dual-activity system, where the dual-activity system includes a primary communication device and a backup communication device, and the method includes: determining M service cards in the main communication equipment and correction time between respective operation time lengths of the M service cards and the second main control card and N service cards in the backup communication equipment and operation time lengths of the first main control card in the main communication equipment according to a preset period, wherein M, N is an integer greater than 0; when any port of any one of the M service cards and the N service cards learns the MAC address, determining a synchronous time stamp when the MAC address is learned by the any service card according to the correction time corresponding to the service card; based on the port which learns the MAC address, any service card judges whether the MAC address meets the migration condition or not according to a preset migration arbitration rule; and when the migration condition is met, the target service card migrates the MAC address according to the synchronous time stamp, wherein the target service card is the service card meeting the migration condition of the MAC address in the M service cards and the N service cards.
In the embodiment, the operation time length of the first main control card is used as the basis of time synchronization between the boards, so that time synchronization processing among the first main control card, the second main control card, M service cards and N service cards can be realized without deploying a time server, the system frame is simplified, and the maintenance cost is reduced. When the address migration is carried out, the dual-activity system can synchronize the time stamp when each service card learns the MAC address, so that the MAC address migration can be accurately and effectively carried out, and the problem that the accurate migration of the MAC address cannot be carried out due to the fact that the time between the boards is not synchronous is avoided.
With reference to the first aspect, in some optional embodiments, determining, with a preset period, M service cards in the primary communication device, and correction times between respective operation durations of the M service cards and the second master card in the backup communication device and the operation duration of the first master card in the primary communication device, includes:
the first master control card in the main communication equipment sends the operation duration of the first master control card to the M service cards and the second master control card according to a preset period;
each service card in the M service cards determines a first correction time according to the operation time of the service card and the operation time of the first master control card received by each preset period;
Each service card in the N service cards determines own second correction time according to own operation time length and own operation time length of the second main control card;
the second main control card determines the correction time of the dual-activity system according to the operation time of the second main control card and the operation time of the first main control card received by each preset period; the correction time includes the first correction time, the second correction time, and the dual-active system correction time.
In the above embodiment, the first correction time is used as the correction time of the service card in the master communication device, the second correction time is used as the correction time of the service card in the slave communication device, and the dual-active system correction time is used as the correction time between the master communication device and the slave communication device, so that the synchronization processing of the time stamp is advantageously performed by using the first correction time, the second correction time and the dual-active system correction time without depending on the time server.
With reference to the first aspect, in some optional embodiments, when any port in any one of the M service cards and the N service cards learns a MAC address, determining, by the any service card itself, a synchronization timestamp when learning the MAC address according to a correction time corresponding to the any service card itself includes:
When any port in any one of the M service cards learns an MAC address, determining the synchronous timestamp when the MAC address is learned at the latest time by the any service card according to the current starting time length and the corresponding first correction time when the MAC address is learned by the any service card;
when any port in any one of the N service cards learns the MAC address, determining the synchronous timestamp when the MAC address is learned in the latest time by the any service card according to the current starting time length when the MAC address is learned, the corresponding second correction time and the dual-active system correction time.
In the above embodiment, the calculated synchronization time stamps are time stamps after synchronization processing, and are based on the operation time length of the first main control card, so that the actual sequence when the MAC address is learned by analyzing and comparing the synchronization time stamps is convenient.
With reference to the first aspect, in some optional implementations, the determining, by the any service card according to a preset migration arbitration rule, whether the MAC address meets a migration condition based on the port that learns the MAC address includes:
When the MAC addresses recorded by different port learning exist in the main communication equipment or the backup communication equipment, the service card determines that the MAC addresses meet the migration condition.
With reference to the first aspect, in some optional implementations, when the migration condition is met, migrating, by the target service card, the MAC address includes:
when the migration condition is met, the target service card migrates the MAC address to a port which learns the MAC address and has the largest synchronous timestamp in the target service card;
or when the migration condition is met and the synchronous time stamps of the ports which learn the MAC address are the same, the target service card migrates the MAC address to the port with the minimum port identifier in the target service card and learns the MAC address;
or when the migration condition is met, the port identifiers of the learned MAC addresses are the same and are respectively positioned in the main communication equipment and the backup communication equipment, and the synchronous time stamps are the same, migrating the MAC addresses to the port of the target service card, which is used for learning the MAC addresses, by the target service card, wherein the target service card is the service card of the main communication equipment, and the port of the target service card meets the migration condition.
In a second aspect, an embodiment of the present application further provides another address migration method, applied to a communication device, where the method includes:
determining correction time between respective operation time lengths of M service cards in the communication equipment and operation time lengths of a first main control card in the communication equipment in a preset period, wherein M is an integer greater than 0;
when any port in any one of the M service cards learns the MAC address, determining a synchronous time stamp when the MAC address is learned by the any service card according to the correction time corresponding to the service card;
based on the port which learns the MAC address, any service card judges whether the MAC address meets the migration condition or not according to a preset migration arbitration rule;
and when the migration condition is met, the target service card migrates the MAC address according to the synchronous time stamp, wherein the target service card is one of the M service cards meeting the migration condition of the MAC address.
With reference to the second aspect, in some optional embodiments, determining, at a preset period, a correction time between each operation duration of M service cards in the communication device and an operation duration of a first master card in the communication device includes:
The first master control card in the main communication equipment sends the operation duration of the first master control card to the M service cards according to a preset period;
and each service card in the M service cards determines the first correction time according to the operation time of the service card and the operation time of the first master control card received by each preset period.
With reference to the second aspect, in some optional embodiments, when any port in any of the M service cards learns a MAC address, determining, by the any service card itself, a synchronization timestamp when learning the MAC address according to a correction time corresponding to the service card itself includes:
when any port in any one of the M service cards learns the MAC address, determining the synchronous timestamp when the MAC address is learned at the latest time by the any service card according to the current starting time length when the MAC address is learned and the corresponding first correction time.
With reference to the second aspect, in some optional embodiments, the determining, by the service card according to a preset migration arbitration rule, whether the MAC address meets a migration condition based on the port that learns the MAC address includes:
When the MAC address is recorded in the M service cards through different port learning, any service card determines that the MAC address meets the migration condition.
With reference to the second aspect, in some optional embodiments, when the migration condition is met, migrating, by the target service card, the MAC address includes:
when the migration condition is met, the target service card migrates the MAC address to a port which learns the MAC address and has the largest synchronous timestamp in the target service card;
or when the migration condition is met and the synchronous time stamps of the ports which learn the MAC address are the same, the target service card migrates the MAC address to the port with the minimum port identification in the target service card and learns the port with the MAC address.
In a third aspect, an embodiment of the present application further provides a communication device, where the communication device includes a main control card, a backup main control card, and M service cards, where M is an integer greater than 0, and computer programs are stored in the main control card, the backup main control card, and the M service cards, and when the computer programs are executed, the computer programs enable the communication device to execute the method described above.
In a fourth aspect, the embodiment of the present application further provides a dual-active system, where the dual-active system includes a primary communication device and a backup communication device;
the first master control card in the main communication device is used for determining M service cards in the main communication device and correction time between respective operation time lengths of the M service cards and the second master control card and the N service cards in the backup communication device and the operation time length of the first master control card in the main communication device in a preset period, wherein M, N is an integer larger than 0;
when any port of any one of the M service cards and the N service cards learns the MAC address, the any service card is also used for determining a synchronous time stamp when the MAC address is learned according to the correction time corresponding to the service card;
the service card is further used for judging whether the MAC address meets the migration condition or not according to a preset migration arbitration rule based on the port of the MAC address and the synchronous time stamp;
and when the migration condition is met, the target service card is used for migrating the MAC address, and the target service card is one of the M service cards and the N service cards which meets the migration condition of the MAC address.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a communication device according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a dual-active system according to an embodiment of the present application.
Fig. 3 is a schematic flow chart of an address migration method according to an embodiment of the present application.
FIG. 4 is a second flowchart of an address migration method according to an embodiment of the present application.
Icon: 10-a communication device; 11-a master control card; 12-backing up a main control card; 20-a dual living system; 30-a primary communication device; 31-a first master card; 32-a first backup master card; 40-backing up the communication device; 41-a second master card; 42-a second backup master card.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. It should be noted that the terms "first," "second," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. The following embodiments and features of the embodiments may be combined with each other without conflict.
First embodiment
Referring to fig. 1, an embodiment of the present application provides a communication device 10 that can implement migration of MAC addresses without deploying a time server. The communication device 10 may be a switch, or other device having switch functionality. The communication device 10 shown in fig. 1 may be used as a component device in the dual-active system 20 as described in fig. 2.
Communication device 10 may include a master card 11, a backup master card 12, and M service cards. Wherein M is an integer greater than 0, and computer programs are stored in the main control card 11, the backup main control card 12, and the M service cards, and when the computer programs are executed, the communication device 10 is enabled to execute the steps in the address migration method in the first embodiment.
In the communication device 10, the identities and functions of the main control card 11 and the backup main control card 12 can be replaced with each other. In general, when the communication device 10 is operating, the main control card 11 is in an operating state; the backup main control card 12 can be in a standby state without executing a service.
During operation of the master card 11, the master card 11 may synchronize control data with the backup master card 12 so that the backup master card 12 may take over all traffic of the master card 11 when the backup master card 12 needs to replace the master card 11. The control data may be flexibly determined according to practical situations, for example, the control data includes, but is not limited to, a start duration of the host card 11 itself.
The service card can be used for learning of MAC addresses and data forwarding.
Both the master card 11 and the backup master card 12 may be used to manage and control M service cards, for example, the master card 11 may synchronize the time between the M service cards.
Referring to fig. 2, the present application also provides a dual-activity system 20 that can be used to perform or implement the steps of the address migration method described in the second embodiment. It will be appreciated that in dual-activity system 20, two communication devices may be included, one of which acts as a primary communication device 30 and the other as a backup communication device 40. Both communication devices may operate independently at the same time. For example, two communication devices may operate cooperatively based on an MLAG (Multi-Chassis Link Aggregation Group, cross-device link aggregation group) protocol. In addition, the two communication devices can independently operate a two-layer network protocol and a three-layer network protocol, and independently perform MAC address learning, data message forwarding and the like.
In both communication devices of the dual-activity system 20, there is a case of association of partial traffic. For example, for MAC addresses, the MAC addresses learned by the two communication devices may be automatically synchronized, so as to ensure that the two independent communication devices can cooperate, and externally present a cooperative dual-activity system 20.
Illustratively, when the dual-activity system 20 works cooperatively based on the MLAG protocol, the associated configuration of ports may be performed in the created MLAG group. For example, the ID (Identity Document, identification number) of the port 1 of the service card 1 in the primary communication device 30 and the ID of the port 1 of the service card 1 in the backup communication device 40 are associated to the same ID of the MLAG group. Based on this, the dual-activity system 20 can then interact with the port ID of the MLAG group during the external communication.
Wherein, in a single communication device, different ports have different port identifications (the port identifications are port IDs). In both communication devices, ports with the same port identification may be present. For example, the service card 1 of the primary communication device 30 may have a port with a port ID of "001", and the service card 1 of the backup communication device 40 may have a port with a port ID of "001". The port ID and the ID of the MLAG group may be flexibly determined according to practical situations, which are not particularly limited herein.
Referring to fig. 2 again, in the dual-active system 20, the primary communication device 30 may include a first main control card 31, a first backup main control card 32, and M service cards. The backup communication device 40 may include a second main control card 41, a second backup main control card 42, and N service cards. Wherein M, N are integers, M and N can be the same or different, and can be flexibly determined according to actual conditions.
Referring to fig. 3, the present application provides an address migration method, which can be applied to the communication device 10, and each step in the method is executed or implemented by the communication device 10. The method may comprise the steps of:
step S110, determining correction time between respective operation time lengths of M service cards in the communication equipment and operation time length of a first main control card 31 in the communication equipment according to a preset period, wherein M is an integer greater than 0;
step S120, when any port in any service card in the M service cards learns the MAC address, determining a synchronous time stamp when the MAC address is learned by the any service card according to the correction time corresponding to the service card;
step S130, based on the port of the MAC address learned, any service card judges whether the MAC address meets the migration condition according to a preset migration arbitration rule;
and step S140, when the migration condition is met, the target service card migrates the MAC address according to the synchronous time stamp, wherein the target service card is the service card meeting the migration condition of the MAC address in the M service cards.
In the above embodiment, the operation duration of the first main control card 31 is used as the basis of time synchronization between boards, so that time synchronization processing between the first main control card 31 and M service cards can be realized without redeploying a time server, system frame is simplified, and maintenance cost is reduced. When the address migration is carried out, the communication equipment can synchronize the time stamp when each service card learns the MAC address, so that the MAC address migration can be accurately and effectively carried out, and the problem that the accurate migration of the MAC address cannot be carried out due to the fact that the time between the boards is not synchronous is avoided.
The steps of the method will be described in detail below, as follows:
in step S110, in each board card such as the first main control card 31 and the M service cards of the communication device, a timer with a timing function is provided, so that the running duration of each board card can be independently recorded. The operation time period can be understood as follows: and taking the starting of the board card as zero time, and continuously recording time data obtained by the accumulated time length of the board card in the two states of the running state and the standby state. And after the board card is turned off and restarted, timing is performed again at zero time. The timer may be, but is not limited to, a crystal oscillator or other timing module.
In the starting operation process of the communication device, starting time points of the first main control card 31 and the boards such as the M service cards may be different, and the starting time of the first main control card 31 is usually earlier than the starting time of the service cards.
The timers of the respective boards count independently, and there are cases where the recorded times are not synchronized. When the time synchronization is performed in step S110, the operation duration of the first main control card 31 may be used as a reference time, and then, at the same time point in the real world, a duration difference between the operation durations of the M boards and the operation duration of the first main control card 31 is calculated, where the duration difference may be used as a correction time. The respective correction time of the M boards can convert the running time of the boards into time data under the reference time.
As an alternative embodiment, step S110 may include:
the first master control card 31 in the master communication device sends the operation duration of the first master control card 31 to the M service cards according to a preset period;
and each service card in the M service cards determines a first correction time according to the operation time of the service card and the operation time of the first master control card 31 received by each preset period.
As can be appreciated, in the dual-active system 20, the first main control card 31 may periodically send the current operation duration of the first main control card 31 to M service cards, and each time the service card receives the operation duration of the first main control card 31, the service card may calculate and obtain a correction time, and then each service card may perform its own time synchronization processing by using its own correction time. Thus, the dual-active system 20 can periodically synchronize the time between the first main control card 31 and the M service cards, so as to avoid the situation that the time between the service cards is not synchronized after the time synchronization interval is longer. The preset period may be flexibly determined according to practical situations, which is not specifically limited herein.
Illustratively, the communication device includes a first host card 31, a service card 1, and a service card 2. At the time of 2021, 1, 13, 0 minutes, 0 seconds, the operation duration of the first main control card 31 is 60 seconds, the operation duration of the service card 1 is 30 seconds, and the operation duration of the service card 2 is 31 seconds. Meanwhile, the control data of "the operation duration of the first main control card 31 is 60 seconds" is issued to the service card 1 and the service card 2 by the first main control card 31, and then the service card 1 can automatically calculate the own correction time to be 30 seconds, and the service card 2 can automatically calculate the own correction time to be 29 seconds.
In step S120, the manner in which the port in the service card learns the MAC address is well known to those skilled in the art, and will not be described here again. When any port learns the MAC address, the service card where the port is located can determine the synchronous timestamp when learning the MAC address based on the current running time of the service card and the correction time of the service card.
Wherein, step S120 may include:
when any port in any one of the M service cards learns the MAC address, determining the synchronous timestamp when the MAC address is learned at the latest time by the any service card according to the current starting time length when the MAC address is learned and the corresponding first correction time.
It can be appreciated that, in general, the start time of the master service card is earlier than the start time of the service card, and at this time, the synchronization time stamp of each service card can be calculated by the following formula:
T 1 ＝T 0 +S 1 (1)
in formula (1), T 1 The synchronous time stamp of the service card when the service card learns the MAC address is pointed out; t (T) 0 The operation time of the service card when the service card learns the MAC address is indicated; s is S 1 Refers to the correction time of the service card itself when the MAC address is learned.
Illustratively, when the above correction is employedIn the example of the inter-determination method, assuming that the MAC address is referred to as "MAC1", when the port 1 of the service card 1 of the communication device learns "MAC1", the current correction time of the service card 1 is 30 seconds. Wherein the original timestamp (uncorrected time) of "MAC1" is learned to be the current running duration of the service card 1, and the current running duration is assumed to be 10 minutes, and at this time, the synchronization timestamp can be calculated by the above formula (1), i.e., T 1 For 10 minutes 30 seconds.
In step S130, the preset migration arbitration rule may be flexibly determined according to the actual situation. For example, when the same MAC address is learned by a different port in the dual-living system 20, it is determined that the migration condition is satisfied.
For example, step S130 may include:
when the MAC address is recorded in the M service cards through different port learning, any service card determines that the MAC address meets the migration condition.
In a single communication device, ports between the respective service cards have different port IDs, and thus, different ports can be distinguished by the port IDs that the ports have.
For example, assuming that, among the M service cards, after learning "MAC1", port "001" of service card 1 also learns "MAC1", port "002" of service card 2, at this time, service card 2 may acquire information that "service card 1 has learned" MAC1 "based on the inter-board communication between service card 1 and service card 1, and further may determine that service card 2 satisfies the migration condition, and the migration target is port" 002 "of service card 2.
In step S140, the migration manner may be flexibly determined according to the actual situation, and the port with the latest time learned to the same MAC address may be used as the migration object, or the port with the smaller port ID may be used as the migration object when the time learned to the two ports with the same MAC address is the same. And then, migrating the MAC address to the port pointed by the migration object.
For example, step S140 may include:
when the migration condition is met, the target service card migrates the MAC address to a port which learns the MAC address and has the largest synchronous timestamp in the target service card;
or when the migration condition is met and the synchronous time stamps of the ports which learn the MAC address are the same, the target service card migrates the MAC address to the port with the minimum port identification in the target service card and learns the port with the MAC address.
The target service card is understandably the service card where the port characterizing the migration object is located in the M service cards. The port may be determined by learning information such as a synchronization time stamp of the MAC address, port ID, etc.
Illustratively, in each service card of the communication device, when the port "001" has learned "MAC1", the port "002" also learns "MAC1", and at this time, the migration target is determined by comparing the synchronization time stamps when "MAC1" was learned.
If the synchronization time stamp of the port "002" is larger than the synchronization time stamp of the port "001", it means that the port "002" learns that the time of the "MAC1" is latest, and at this time, "MAC1" is migrated from the port "001" to the port "002". The migration object is port 002, and the final learned outlet port of MAC1 is port 002.
If the synchronization time stamp of the port "002" is the same as the synchronization time stamp of the port "001", the port of the smaller port identification "001" is set as the migration target, and at this time, "MAC1" is migrated from the port "002" to the port "001". The output port of the final learning of the MAC1 is the port 001.
Second embodiment
The address migration method provided in the second embodiment may be applied to the dual-activity system 20 shown in fig. 2, where the devices in the dual-activity system 20 cooperate with each other to implement the steps of the method, and in the second embodiment, the method may include the following steps:
step S210, determining M service cards in the main communication device 30 and correction time between respective operation durations of the service cards and the second main control card 41 and the N service cards in the backup communication device 40 and the operation duration of the first main control card 31 in the main communication device 30 in a preset period, wherein M, N is an integer greater than 0;
step S220, when any port in any one of the M service cards and the N service cards learns the MAC address, determining a synchronous time stamp when learning the MAC address by the any service card according to the correction time corresponding to the service card;
Step S230, the arbitrary business card judges whether the MAC address meets the migration condition or not according to the preset migration arbitration rule based on the port of the learned MAC address;
and step S240, when the migration condition is met, the target service card migrates the MAC address according to the synchronous time stamp, wherein the target service card is the service card meeting the migration condition of the MAC address in the M service cards and the N service cards.
In the above embodiment, the operation duration of the first main control card 31 is used as the basis of time synchronization between boards, so that time synchronization processing among the first main control card 31, the second main control card 41, the M service cards and the N service cards can be realized without redeploying a time server, the system frame is simplified, and the maintenance cost is reduced. When the address migration is performed, the dual-activity system 20 can synchronize the time stamp when each service card learns the MAC address, so that the MAC address migration can be accurately and effectively performed, and the problem that the accurate migration of the MAC address cannot be performed due to the fact that the time between the boards is not synchronous is avoided.
Understandably, the address migration method in the second embodiment is similar to the implementation flow of the address migration method in the first embodiment. The operational steps performed by the individual communication devices (primary communication device 30, backup communication device 40) in the second embodiment can be regarded approximately as the operational steps performed by the communication device in the first embodiment.
In comparison with the first embodiment, in the second embodiment, synergy and interaction between the primary communication device 30 and the backup communication device 40 are newly added. That is, in the dual-activity system 20, it is necessary to ensure synchronization of time and MAC addresses of all boards in the dual-activity system 20 in addition to time synchronization and synchronization of MAC addresses within a single communication device.
The implementation procedure, which is different from the first implementation, in each step in the second embodiment will be described in detail as follows:
in step S210, unlike step S110 in the first embodiment, the first master card 31 may further perform synchronization processing on the respective operation durations of the second master card 41 and the N service cards in the backup communication device 40 in a preset period.
In step S210, it may include:
the first master control card 31 in the master communication device 30 sends the operation duration of the first master control card 31 to the M service cards and the second master control card 41 according to a preset period;
each service card of the M service cards determines a first correction time thereof according to an operation time thereof and an operation time of the first master control card 31 received by each preset period;
Each service card in the N service cards determines a second correction time according to the operation time of the service card and the operation time of the second master control card 41;
the second main control card 41 determines the correction time of the dual-active system 20 according to the running time of the second main control card 41 and the running time of the first main control card 31 received by each preset period; the correction time includes the first correction time, the second correction time, and the dual activity system 20 correction time.
Understandably, the first main control card 31 can send its own operation time to the second main control card 41 through inter-board communication, and then the second main control card 41 calculates to obtain the difference between the own operation time of the second main control card 41 and the operation time of the first main control card 31, where the difference is the correction time of the dual-activity system 20.
Illustratively, the example of the correction time determination method described above is taken as an example, assuming that the operation time of the first main control card 31 is 60 seconds and the operation time of the second main control card 41 is 30 seconds at a time of 2021, 1, 13, 0 minutes and 0 seconds. Meanwhile, the control data of "the operation duration of the first main control card 31 is 60 seconds" is issued to the second main control card 41 by the first main control card 31, and then the second main control card 41 can automatically calculate the correction time of the own dual-activity system 20 to be 30 seconds.
In step S220, unlike step S120, in the second embodiment, the dual-activity system 20 may convert the operation durations or time stamps of the second main control card 41 and the N service cards in the backup communication device 40 into time data based on the first main control card 31 of the main communication device 30 based on the correction time of the dual-activity system 20 and the second correction time in the backup communication device 40, so as to implement the time synchronization process.
For example, step S220 may include:
when any port in any one of the M service cards learns an MAC address, determining the synchronous timestamp when the MAC address is learned at the latest time by the any service card according to the current starting time length and the corresponding first correction time when the MAC address is learned by the any service card;
when any port in any one of the N service cards learns the MAC address, determining, by the any service card, the synchronization timestamp when the MAC address is learned at the latest time according to the current start duration and the corresponding second correction time when the service card learns the MAC address, and the correction time of the dual-active system 20.
Illustratively, assume that when port 1 of service card 1 in backup communication device 40 learns "MAC1", service card 1 has a current correction time of 30 seconds and a current dual-active system correction time of 30 seconds. The original timestamp (uncorrected time) of the port 1 learned to "MAC1" is the current running duration of the service card 1, and the current running duration is assumed to be 10 minutes. At this time, the synchronization time stamp can be calculated by the following formula (2) to be 11 minutes. The formula (2) is as follows:
T 2 ＝T’ 0 +S 0 +S 2 (2)
In formula (2), T 2 Finger deviceA synchronizing time stamp of the service card in the communication device 40 at the learned MAC address; t'. 0 Refers to the operation time of the service card in the backup communication device 40 when the service card learns the MAC address; s is S 0 Referring to the dual activity system 20 correction time; s is S 2 Refers to the correction time of the service card itself when the MAC address is learned.
In step S230, unlike step S130, in the second embodiment, the dual-activity system 20 may perform detection analysis on the MAC address learned by the ports of each service card in the primary communication device 30 and the backup communication device 40 to determine whether the MAC address satisfies the migration condition.
For example, step S230 may include:
when there are different ports learning the recorded MAC addresses in the primary communication device 30 or the backup communication device 40, the arbitrary service card determines that the MAC addresses satisfy the migration condition.
In step S240, when performing the MAC address migration, the service card learning the MAC address may analyze and compare the ports, the port IDs and the corresponding synchronization time stamps, which are learned to be the same as the MAC address, in all the service cards in the dual-activity system 20, so as to determine the migration object.
For example, step S240 may include:
when the migration condition is met, the target service card migrates the MAC address to a port which learns the MAC address and has the largest synchronous timestamp in the target service card;
or when the migration condition is met and the synchronous time stamps of the ports which learn the MAC address are the same, the target service card migrates the MAC address to the port with the minimum port identifier in the target service card and learns the MAC address;
or when the migration condition is met, the port identifiers of the ports that learn the MAC address are the same, and the ports are respectively located in the primary communication device 30 and the backup communication device 40, and the synchronization time stamps are the same, the MAC address is migrated to the port that learns the MAC address in the target service card by the target service card, where the target service card is the service card that meets the migration condition in the primary communication device 30.
For example, in each service card of the dual-active system 20, it is assumed that the IDs of the ports that learn the same "MAC1" are different as "001" and "002", and the synchronization time stamps corresponding to the two ports are also different, and at this time, the port with the largest synchronization time stamp can be regarded as the migration target by comparing the synchronization time stamps when the two ports learn "MAC 1".
If the synchronization time stamp of the port "002" is the same as the synchronization time stamp of the port "001", the port of the smaller port identification "001" is set as the migration target, and at this time, "MAC1" is migrated from the port "002" to the port "001". The output port of the final learning of the MAC1 is the port 001.
If the port having learned the same "MAC1" is in the primary communication device 30 and the backup communication device 40, respectively, and the IDs of the ports are the same and the synchronization time stamps are the same, the port having learned the "MAC1" in the primary communication device 30 is set as the migration target.
Based on the design, the time synchronization processing between the boards can be realized by the timing function of the internal of each board in the dual-activity system 20 without depending on a deployed time server, a time synchronization protocol and the like, without being influenced by actual time and the like in the real world of the system, so that the address migration of the dual-activity system 20 can be realized without depending on the time server.
It is understood that the corresponding processor and memory are included in the main control card 11, the backup main control card 12 and the service card of the communication device 10. The processor has signal processing capabilities. For example, the processor may be a central processing unit (Central Processing Unit, CPU), digital signal processor (Digital Signal Processing, DSP), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the application.
The memory may be, but is not limited to, random access memory, read only memory, programmable read only memory, erasable programmable read only memory, electrically erasable programmable read only memory, and the like. In the present embodiment, the memory may be used to store the operation time period, the correction time period, and the like. Of course, the memory may also be used to store a program that the processor executes after receiving the execution instructions.
The main control card 11, the backup main control card 12 and the service card may further include a communication module. The communication module is used for establishing communication between the boards so as to realize data interaction between the boards; or for establishing communication between communication devices for data interaction between the communication devices.
It will be appreciated that the configuration shown in fig. 1 is merely a schematic illustration of one configuration of a communication device, and that the communication device may also include more components than those shown in fig. 1. The components shown in fig. 1 may be implemented in hardware, software, or a combination thereof.
It should be noted that, for convenience and brevity of description, specific working processes of the above-described communication device may refer to corresponding processes of each step in the foregoing method, and will not be described in detail herein.
From the foregoing description of the embodiments, it will be apparent to those skilled in the art that the present application may be implemented in hardware, or by means of software plus a necessary general hardware platform, and based on this understanding, the technical solution of the present application may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disc, a mobile hard disk, etc.), and includes several instructions for causing a computer device (may be a personal computer, a server, or a communication device, etc.) to execute the method described in the respective implementation scenario of the present application.
In summary, in the scheme, the operation duration of the first main control card is used as the basis of time synchronization between boards, so that time synchronization processing among the first main control card, the second main control card, the M service cards and the N service cards can be realized without deploying a time server, the system frame is simplified, and the maintenance cost is reduced. When the address migration is carried out, the dual-activity system can synchronize the time stamp when each service card learns the MAC address, so that the MAC address migration can be accurately and effectively carried out, and the problem that the accurate migration of the MAC address cannot be carried out due to the fact that the time between the boards is not synchronous is avoided.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus, system and method may be implemented in other manners as well. The above-described apparatus, system, and method embodiments are merely illustrative, for example, flow charts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions. In addition, functional modules in the embodiments of the present application may be integrated together to form a single part, or each module may exist alone, or two or more modules may be integrated to form a single part.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (12)

1. An address migration method, which is applied to a dual-activity system, wherein the dual-activity system comprises a main communication device and a backup communication device, and the method comprises the following steps:
determining M service cards in the main communication equipment and correction time between respective operation time lengths of the M service cards and the second main control card and N service cards in the backup communication equipment and operation time lengths of the first main control card in the main communication equipment according to a preset period, wherein M, N is an integer greater than 0; the first correction time between the M business cards and the first master control card is the difference value between the operation time length of the M business cards and the operation time length of the first master control card; the dual-activity system correction time between the second main control card and the first main control card is the difference value between the operation time length of the second main control card and the operation time length of the first main control card; the second correction time between the N service cards and the second master control card is the difference value between the operation time length of the N service cards and the operation time length of the second master control card;
When any port of any one of the M service cards and the N service cards learns the MAC address, determining a synchronous time stamp when the MAC address is learned by the any service card according to the correction time corresponding to the service card;
the synchronous time stamps corresponding to the M business cards when the MAC address is learned are determined according to the following formula: t (T) 1 ＝T 0 +S 1 ；
Wherein T is 1 The synchronous time stamp of the service card when the service card learns the MAC address is pointed out; t (T) 0 The operation time of the service card when the service card learns the MAC address is indicated; s is S 1 The first correction time of the service card when the service card learns the MAC address is indicated;
the synchronous time stamps corresponding to the N service cards when the MAC address is learned are determined according to the following formula: t (T) 2 ＝T’ 0 +S 0 +S 2 ；
Wherein T is 2 A synchronous time stamp of the service card in the backup communication equipment when the service card learns the MAC address; t'. 0 Referring to the service card itself in the backup communication device at the learned MAC addressThe operation time length; s is S 0 The correction time of the double-living system is indicated; s is S 2 The second correction time of the service card when the service card learns the MAC address;
based on the port which learns the MAC address, any service card judges whether the MAC address meets the migration condition or not according to a preset migration arbitration rule;
And when the migration condition is met, the target service card migrates the MAC address according to the synchronous time stamp, wherein the target service card is the service card meeting the migration condition of the MAC address in the M service cards and the N service cards.
2. The method of claim 1, wherein determining M service cards in the primary communication device and a correction time between each of an operation duration of the M service cards and the second master card in the backup communication device and an operation duration of the N service cards and the first master card in the primary communication device at a preset period includes:
the first master control card in the main communication equipment sends the operation duration of the first master control card to the M service cards and the second master control card according to a preset period;
each service card in the M service cards determines a first correction time according to the operation time of the service card and the operation time of the first master control card received by each preset period;
each service card in the N service cards determines own second correction time according to own operation time length and own operation time length of the second main control card;
And the second main control card determines the correction time of the dual-activity system according to the running time of the second main control card and the running time of the first main control card received by each preset period.
3. The method according to claim 2, wherein when any port of any one of the M service cards and the N service cards learns a MAC address, determining, by the any service card itself, a synchronization timestamp when learning the MAC address according to a correction time corresponding to the any service card itself, includes:
when any port in any one of the M service cards learns an MAC address, determining the synchronous timestamp when the MAC address is learned at the latest time by the any service card according to the current starting time length and the corresponding first correction time when the MAC address is learned by the any service card;
when any port in any one of the N service cards learns the MAC address, determining the synchronous timestamp when the MAC address is learned in the latest time by the any service card according to the current starting time length when the MAC address is learned, the corresponding second correction time and the dual-active system correction time.
4. The method according to claim 1, wherein the determining, by the any service card, whether the MAC address satisfies a migration condition according to a preset migration arbitration rule based on the port on which the MAC address is learned, includes:
when the MAC addresses recorded by different port learning exist in the main communication equipment or the backup communication equipment, the service card determines that the MAC addresses meet the migration condition.
5. The method of claim 1, wherein migrating the MAC address via the target service card when the migration condition is satisfied comprises:
when the migration condition is met, the target service card migrates the MAC address to a port which learns the MAC address and has the largest synchronous timestamp in the target service card;
or when the migration condition is met and the synchronous time stamps of the ports which learn the MAC address are the same, the target service card migrates the MAC address to the port with the minimum port identifier in the target service card and learns the MAC address;
or when the migration condition is met, the port identifiers of the learned MAC addresses are the same and are respectively positioned in the main communication equipment and the backup communication equipment, and the synchronous time stamps are the same, migrating the MAC addresses to the port of the target service card, which is used for learning the MAC addresses, by the target service card, wherein the target service card is the service card of the main communication equipment, and the port of the target service card meets the migration condition.
6. An address migration method, applied to a communication device, the method comprising:
determining correction time between respective operation time lengths of M service cards in the communication equipment and operation time lengths of a first main control card in the communication equipment in a preset period, wherein M is an integer greater than 0; the first correction time between the operation time lengths of the M business cards and the first master control card is the difference value between the operation time lengths of the M business cards and the operation time lengths of the first master control card;
when any port in any one of the M service cards learns the MAC address, determining a synchronous time stamp when the MAC address is learned by the any service card according to the correction time corresponding to the service card; the synchronous time stamps corresponding to the M business cards when the MAC address is learned are determined according to the following formula: t (T) 1 ＝T 0 +S 1 ；
Wherein T is 1 The synchronous time stamp of the service card when the service card learns the MAC address is pointed out; t (T) 0 The operation time of the service card when the service card learns the MAC address is indicated; s is S 1 The correction time of the service card when the service card learns the MAC address is indicated;
based on the port which learns the MAC address, any service card judges whether the MAC address meets the migration condition or not according to a preset migration arbitration rule;
And when the migration condition is met, the target service card migrates the MAC address according to the synchronous time stamp, wherein the target service card is one of the M service cards meeting the migration condition of the MAC address.
7. The method of claim 6, wherein determining the correction time between the respective operation durations of the M service cards in the communication device and the operation duration of the first main control card in the communication device at the preset period comprises:
the first master control card in the communication equipment sends the operation time length of the first master control card to the M service cards according to a preset period;
and each service card in the M service cards determines the first correction time according to the operation time of the service card and the operation time of the first master control card received by each preset period.
8. The method of claim 7, wherein when any port in any of the M service cards learns a MAC address, determining, by the any service card itself, a synchronization timestamp when the MAC address is learned according to a correction time corresponding to the any service card itself, comprises:
When any port in any one of the M service cards learns the MAC address, determining the synchronous timestamp when the MAC address is learned at the latest time by the any service card according to the current starting time length when the MAC address is learned and the corresponding first correction time.
9. The method of claim 6, wherein the determining, by the any service card, whether the MAC address satisfies a migration condition according to a preset migration arbitration rule based on the port on which the MAC address is learned, includes:
when the MAC address is recorded in the M service cards through different port learning, any service card determines that the MAC address meets the migration condition.
10. The method of claim 9, wherein migrating the MAC address via the target service card when the migration condition is satisfied comprises:
when the migration condition is met, the target service card migrates the MAC address to a port which learns the MAC address and has the largest synchronous timestamp in the target service card;
or when the migration condition is met and the synchronous time stamps of the ports which learn the MAC address are the same, the target service card migrates the MAC address to the port with the minimum port identification in the target service card and learns the port with the MAC address.
11. A communication device, characterized in that the communication device comprises a master card, a backup master card and M service cards, wherein M is an integer greater than 0, and wherein computer programs are stored in the master card, the backup master card and the M service cards, which when executed enable the communication device to perform the method according to any one of claims 5-10.
12. The dual-activity system is characterized by comprising a main communication device and a backup communication device;
the first master control card in the main communication device is used for determining M service cards in the main communication device and correction time between respective operation time lengths of the M service cards and the second master control card and the N service cards in the backup communication device and the operation time length of the first master control card in the main communication device in a preset period, wherein M, N is an integer larger than 0; the first correction time between the M business cards and the first master control card is the difference value between the operation time length of the M business cards and the operation time length of the first master control card; the dual-activity system correction time between the second main control card and the first main control card is the difference value between the operation time length of the second main control card and the operation time length of the first main control card; the second correction time between the N service cards and the second master control card is the difference value between the operation time length of the N service cards and the operation time length of the second master control card;
When any port of any one of the M service cards and the N service cards learns the MAC address, the any service card is also used for determining a synchronous time stamp when the MAC address is learned according to the correction time corresponding to the service card;
the synchronous time stamps corresponding to the M business cards when the MAC address is learned are determined according to the following formula: t (T) 1 ＝T 0 +S 1 ；
Wherein T is 1 The synchronous time stamp of the service card when the service card learns the MAC address is pointed out; t (T) 0 The operation time of the service card when the service card learns the MAC address is indicated; s is S 1 The first correction time of the service card when the service card learns the MAC address is indicated;
the synchronous time stamps corresponding to the N service cards when the MAC address is learned are determined according to the following formula: t (T) 2 ＝T’ 0 +S 0 +S 2 ；
Wherein T is 2 A synchronous time stamp of the service card in the backup communication equipment when the service card learns the MAC address; t'. 0 The operation time of the service card in the backup communication equipment when the service card learns the MAC address is pointed out; s is S 0 The correction time of the double-living system is indicated; s is S 2 The second correction time of the service card when the service card learns the MAC address;
the service card is further used for judging whether the MAC address meets the migration condition or not according to a preset migration arbitration rule based on the port of the MAC address and the synchronous time stamp;
And when the migration condition is met, the target service card is used for migrating the MAC address, and the target service card is one of the M service cards and the N service cards which meets the migration condition of the MAC address.
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