CN105939203A - Table entry synchronization method and device - Google Patents
Table entry synchronization method and device Download PDFInfo
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- CN105939203A CN105939203A CN201510486677.5A CN201510486677A CN105939203A CN 105939203 A CN105939203 A CN 105939203A CN 201510486677 A CN201510486677 A CN 201510486677A CN 105939203 A CN105939203 A CN 105939203A
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- mapping table
- arp
- control board
- main control
- information index
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0668—Management of faults, events, alarms or notifications using network fault recovery by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure
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- 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
- H04L45/74—Address processing for routing
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention provides a table entry synchronization method and a table entry synchronization device. The method comprises the steps of after a primary main control panel starts, acquiring a first APP information index mapping table pre-stored on a forwarding chip; checking that whether the first APP information index mapping table pre-stored on the forwarding chip is consistent with a second APP information index mapping table stored on the primary main control panel; and if not consistent, deleting correspondence information between inconsistent APP table entries and resource indexes in the first APP information index mapping table on a forwarding chip or the second APP information index mapping table stored on the primary main control panel. The method ensures the normal forwarding of data, and improves the whole forwarding performance.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of list item synchronous method and device.
Background technology
When the main control board of the network equipment with dual master control is properly functioning, slave control board is in mourns in silence
State, not with business module and external network communication.When main control board break down or user force switching
Time, slave control board will take over main control board, it is ensured that the unremitting forwarding of system.
In the network equipment with dual master control as shown in Figure 1, main control board for safeguard and under be transported to
Put data to forwarding chip, simultaneously by collocation data backup to slave control board.When the network equipment learns to arrive
Article one, there is the ARP table of ARP (Address Resolution Protocol, address resolution protocol) information
Xiang Shi, this ARP can be issued to forwarding chip by main control board, and forwarding chip Resources allocation is protected
Deposit this ARP, and the location index of the resource distributed for this ARP is returned to primary master control
Plate, afterwards main control board by study to ARP and forwarding chip be this ARP distribution
Location index, it may be assumed that ARP information index mapping table, backups to slave control board.
After main control board deletes self and the ARP of forwarding chip preservation, (release forwards core
Sheet resource), main control board is notified that in the ARP information index mapping table that slave control board deletes backup
The ARP corresponding with this ARP and the correspondence relationship information of resource index.If in backup
During main control board abnormal restarting, then slave control board may not receive deletion this corresponding relation
The instruction of information, thus cause slave control board when switching to new main control board and forwarding chip dimension
The ARP information index mapping table protected is inconsistent, and then it is abnormal to cause data to forward.
Summary of the invention
For the defect of prior art, the invention provides a kind of list item synchronous method and device.
The present invention provides a kind of list item synchronous method, is applied to the main control board of the network equipment, described network
Equipment also includes forwarding chip and slave control board, when described main control board fault, by described standby
Master control borad switches to new main control board, and wherein the method includes:
After described main control board starts, obtain the first ARP information index prestored on described forwarding chip
Mapping table；
Check on the first ARP information index mapping table and described main control board prestored on described forwarding chip
The second ARP information preserved indexes the most consistent of mapping table；
If inconsistent, that will preserve on the first ARP information index mapping table on forwarding chip or master control borad the
In two ARP information index mapping tables, the correspondence relationship information of inconsistent ARP and resource index is deleted.
The present invention also provides for a kind of list item synchronizer, is applied to the main control board of the network equipment, described net
Network equipment also includes forwarding chip and slave control board, when described main control board fault, by described standby
Switching to new main control board with master control borad, this device includes:
Acquiring unit, after starting when described main control board, obtains the prestored on described forwarding chip
One ARP information index mapping table；
Inspection unit, for checking the first ARP information index mapping table and the institute prestored on described forwarding chip
State the second ARP information preserved on main control board and index the most consistent of mapping table；
Delete unit, for when described first ARP information index mapping table and described second ARP information index
When mapping table is inconsistent, by preserve on the first ARP information index mapping table on forwarding chip or master control borad
In second ARP information index mapping table, inconsistent ARP is deleted with the correspondence relationship information of resource index
Remove.
The list item synchronous method of present invention offer and device, after main control board starts, if checking described
The the first ARP information index mapping table prestored on forwarding chip is with on described main control board the second of preservation
ARP information indexes the inconsistent of mapping table, by the first ARP information index mapping table or master on forwarding chip
ARP inconsistent in the second ARP information index mapping table preserved on control plate is corresponding with resource index
Relation information is deleted.The present invention can make the main control board after switching map with forwarding chip ARP information index
The ARP of table is completely the same with the correspondence relationship information of resource index, and then ensure that the normal of data turns
Send out, improve the forwarding performance of entirety.
Accompanying drawing explanation
Fig. 1 is network equipment environment schematic in embodiment of the present invention prior art；
Fig. 2 is a kind of list item synchronous method schematic flow sheet in the embodiment of the present invention；
Fig. 3 is the logical structure schematic diagram of a kind of list item synchronizer in the embodiment of the present invention；
Fig. 4 is the hardware structure schematic diagram of the list item synchronizer place network equipment in the embodiment of the present invention.
Detailed description of the invention
For making the purpose of the application, technical scheme and advantage clearer, referring to the drawings to this Shen
Please scheme be described in further detail.
In order to solve problems of the prior art, the invention provides a kind of list item synchronous method and dress
Put.
Refer to Fig. 2, for the handling process schematic diagram of the list item synchronous method that the present invention provides, this list item synchronizes
Method can be applicable to the main control board in the network equipment, and the described network equipment also includes forwarding chip and standby
With master control borad, when described main control board fault, described slave control board switch to new primary master control
Plate.Wherein, this list item synchronous method comprises the following steps:
Step 201, after described main control board starts, obtains the ARP prestored on described forwarding chip
Information index mapping table；
When former main control board the faults such as the machine of delaying occurs or artificially switches, former slave control board switch to newly
Main control board, the main control board started in the present invention can be then to be carried out by former slave control board
Main control board after switching.
The network equipment monitor slave control board switch to main control board time, can read and currently forward core
The the first ARP information index mapping table preserved on sheet.
Afterwards, the second ARP information index backed up by former main control board before reading main control board switching
Mapping table.
Wherein, this first ARP information index mapping table and the second ARP information index mapping table all include net
Network learning equipment to the ARP with ARP information and forwarding chip be this ARP distribution money
The location index information in source, it may be assumed that ARP and the correspondence relationship information of resource index.
Step 202, checks the first ARP information index mapping table and described master prestored on described forwarding chip
The the most consistent of mapping table is indexed by the second ARP information preserved on master control borad；
Afterwards, the first ARP information index mapping table on the forwarding chip that will read is protected on main control board
The the second ARP information index mapping table deposited carries out comparison one by one, and then checks that the first ARP information index maps
In table with the correspondence relationship information of ARP and resource index in the second ARP information index mapping table whether
Unanimously.
That is: check be stored in forwarding chip first ARP information index mapping table on whether be stored in primary
Non-existent ARP and the corresponding relation of resource index in second ARP information index mapping table of master control borad
Information；Or, check and be stored in the second ARP information index mapping table of main control board whether have storage
On the first ARP information index mapping table of forwarding chip, non-existent ARP is corresponding with resource index
Relation information.
If, it is determined that the first ARP information index mapping table and the second ARP information index differing of mapping table
Cause, and perform step 203；
Otherwise, it determines the first ARP information index mapping table and the second ARP information index the consistent of mapping table,
Can be with process ends.
| ARP | Resource index |
| ARP information-1 | 01 |
| ARP information-2 | 02 |
| ARP information-3 | 03 |
Table 1
| ARP | Resource index |
| ARP information-1 | 01 |
| ARP information-2 | 02 |
| ARP information-3 | 03 |
| ARP information-4 | 04 |
Table 2
Table 1 shows the first ARP information index mapping table, and table 2 shows that the second ARP information index maps
Table, is only the example for being further appreciated by the present invention, is not limited to an ARP in the embodiment of the present invention
Information index mapping table and the particular content of the second ARP information index mapping table.
According to table 1 and table 2 it can be seen that preserve the first ARP information index mapping table to forwarding chip
With preserve to the second ARP information index content of mapping table of main control board not quite identical, first
ARP information index mapping table does not exist " ARP information-4 " in the second ARP information index mapping table
ARP and the correspondence relationship information of resource index.Hence, it can be determined that the first ARP information index maps
The content of table and the second ARP information index mapping table is inconsistent.
Step 203, when described first ARP information index mapping table maps with described second ARP information index
When table is inconsistent, second will preserved on the first ARP information index mapping table on forwarding chip or master control borad
In ARP information index mapping table, the correspondence relationship information of inconsistent ARP and resource index is deleted.
Inconsistent in the content determining the first ARP information index mapping table and the second ARP information index mapping table
Time, then may determine that when the ARP of the network equipment has renewal, former main control board the most in time will not more
New synchronizing information is to former slave control board, and former main control board i.e. occurs in that the situations such as fault.
It is possible to the first ARP information on deletion forwarding chip indexes preservation on mapping table or master control borad
Inconsistent ARP and the correspondence relationship information of resource index in second ARP information index mapping table.
That is: after table 1 and table 2 are compared, delete second ARP information index mapping table in have,
And the first ARP information indexes ARP and the resource index of non-existent " ARP information-4 " in mapping table
Correspondence relationship information.After deleting second ARP information index mapping table then with the first ARP information rope
Draw the ARP in mapping table completely the same with the correspondence relationship information of resource index.
Correspondingly, it is assumed that by checking that the first ARP information index mapping table prestored on forwarding chip is with primary
The the second ARP information index mapping table preserved on master control borad, determines in the first ARP information index mapping table
There is non-existent ARP and the corresponding relation letter of resource index in the second ARP information index mapping table
Breath, it may be determined that before former main control board breaks down, learnt new ARP, at forwarding chip
After being assigned with resource for this new ARP, main control board is not the most in time by this newly added ARP
The correspondence relationship information of list item and resource index backs up to slave control board and i.e. occurs in that fault.
So, have in the second ARP information index mapping table in determining the first ARP information index mapping table
During the correspondence relationship information of non-existent ARP and resource index, still to delete the first ARP information rope
Draw non-existent ARP in the second ARP information index mapping table in mapping table corresponding with resource index
Relation information, so that the second ARP information index mapping table then indexes in mapping table with the first ARP information
ARP is completely the same with the correspondence relationship information of resource index.And can be continued logical by main control board
The method study crossing ARP study is not backed up the ARP to slave control board.
So, i.e. can ensure that after slave control board switches to main control board, even if in switching
Before in time former main control board is not updated after ARP carry out standby with the correspondence relationship information of resource index
Part, still can be operated by follow-up comparison, deletion etc. so that an ARP of the main control board after switching
The ARP of the second ARP information index mapping table that information index mapping table and forwarding chip prestore and resource
The correspondence relationship information of index is completely the same, and then ensure that the normal forwarding of data.
Further, the inventive method can also be by being stored in the first ARP information index mapping table respectively
The bitmap of forwarding chip, the second ARP information index mapping table is stored in the mode of the bitmap of main control board,
Accelerate the flow process of step 202.
This bitmap is to carry out, by binary system flip operation, a kind of mode of storing.
Specifically, when the network equipment detects former main control board fault, slave control board switch to primary
During master control borad, the second ARP information index mapping table that can be backed up in advance by main control board is stored in described
In the bitmap of new main control board；The the first ARP information index mapping table storage that will prestore on forwarding chip
In the bitmap of described forwarding chip.
Afterwards, the first ARP information rope of the bitmap of forwarding chip it is stored in by method inspections such as XOR algorithms
Draw whether to have on mapping table in the second ARP information index mapping table of the bitmap being stored in main control board and do not deposit
The correspondence relationship information of ARP and resource index；Or, check the position being stored in main control board
Whether the second ARP information index mapping table of figure has the first ARP information of the bitmap being stored in forwarding chip
Non-existent ARP and the correspondence relationship information of resource index on index mapping table；
If so, determine that the first ARP information index mapping table differs with described second ARP information index mapping table
Cause.
At this point it is possible to the first ARP information on forwarding chip is indexed mapping table according to the flow process of step 203
Or the second ARP information preserved on master control borad indexes ARP inconsistent in mapping table and resource index
Correspondence relationship information is deleted.With ensure switching after main control board first ARP information index mapping table with
The ARP of the second ARP information index mapping table that forwarding chip prestores and the corresponding relation letter of resource index
Cease completely the same.
In actual application, when slave control board switches to main control board, by by the second ARP information rope
Draw in the bitmap that mapping table is stored in described new main control board, the first ARP information index mapping table is deposited
The mode being stored in the bitmap of forwarding chip, follow-up to the first ARP information index mapping table and the 2nd ARP
When information index mapping table is compared, the advantage of available bitmap significantly accelerates comparison flow process, is effectively improved
First ARP information index mapping table and the synchronous efficiency of the second ARP information index mapping table.
In sum, the list item synchronous method that the present invention provides, after main control board starts, if checking institute
State the first ARP information index mapping table prestored on forwarding chip with on described main control board the second of preservation
ARP information indexes the inconsistent of mapping table, by the first ARP information index mapping table or master on forwarding chip
ARP inconsistent in the second ARP information index mapping table preserved on control plate is corresponding with resource index
Relation information is deleted.As can be seen here, the main control board after the present invention can make switching is believed with forwarding chip ARP
The ARP of breath index mapping table is completely the same with the correspondence relationship information of resource index, and then ensure that number
According to normal forwarding, improve the forwarding performance of entirety.
The present invention also provides for a kind of list item synchronizer, and Fig. 3 is the structural representation of this list item synchronizer,
This device can apply to the main control board in the network equipment, the described network equipment also include forwarding chip with
And slave control board, when described main control board fault, described slave control board switch to new primary
Master control borad, this list item synchronizer can include acquiring unit 301, inspection unit 302 and delete unit
303, wherein:
Acquiring unit 301, after starting when described main control board, obtains and prestores on described forwarding chip
First ARP information index mapping table；
Inspection unit 302, for checking the first ARP information index mapping table prestored on described forwarding chip
The most consistent with the second ARP information index mapping table preserved on described main control board；
Delete unit 303, for when described first ARP information index mapping table and described second ARP information
When index mapping table is inconsistent, will protect on the first ARP information index mapping table on forwarding chip or master control borad
Inconsistent ARP and the correspondence relationship information of resource index in the second ARP information index mapping table deposited
Delete.
Further, described first ARP information index mapping table is that described main control board is as standby master
Control plate is stored in the first bitmap when switching to main control board；Described second ARP information index mapping table is
Described main control board is stored in the second bitmap when starting.
Further, described inspection unit 302 is specifically checked for being stored in the bitmap of forwarding chip
The second ARP information rope of the bitmap being stored in main control board whether is had on first ARP information index mapping table
Draw non-existent ARP and the correspondence relationship information of resource index in mapping table；Or, inspection is stored in
Whether the second ARP information index mapping table of the bitmap of main control board there is the bitmap being stored in forwarding chip
The first ARP information index mapping table on the correspondence relationship information of non-existent ARP and resource index；
If so, determine that the first ARP information index mapping table is inconsistent with described second ARP information index mapping table.
The list item synchronizer of the main control board that the present invention is applied in the network equipment is at concrete process stream
Can be consistent with the handling process of above-mentioned list item synchronous method in journey, do not repeat them here.
Said apparatus can be realized by software, it is also possible to is realized by hardware, list item synchronizer of the present invention
The hardware structure schematic diagram of the place network equipment all refers to shown in Fig. 4, and its basic hardware environment includes central authorities
Processor CPU, forwarding chip, memorizer and other hardware, wherein memory device includes machine readable
Instruction, CPU reads and performs machine readable instructions and performs the function of each unit in Fig. 3.
From the embodiment of any of the above method and apparatus it can be seen that the embodiment of the present invention provide table
Synchronous method and device, after main control board starts, if checking the prestored on described forwarding chip
One ARP information index mapping table and the second ARP information index mapping table of preservation on described main control board
The 2nd ARP that is inconsistent, that will preserve on the first ARP information index mapping table on forwarding chip or master control borad
The correspondence relationship information of ARP inconsistent in information index mapping table and resource index is deleted.Thus may be used
Seeing, the present invention can make the ARP of the main control board after switching and forwarding chip ARP information index mapping table
List item is completely the same with the correspondence relationship information of resource index, and then ensure that the normal forwarding of data, improves
Overall forwarding performance.Further, the present invention also utilizes the advantage of bitmap the most significantly to accelerate to compare convection current
Journey, is effectively improved main control board and the synchronous efficiency of ARP information index mapping table on forwarding chip.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Within the spirit of invention and principle, any modification, equivalent substitution and improvement etc. done, should be included in
Within the scope of protection of the invention.
Claims (6)
1. a list item synchronous method, is applied to the main control board of the network equipment, it is characterised in that described net
Network equipment also includes forwarding chip and slave control board, when described main control board fault, by described standby
New main control board, described method is switched to include with master control borad:
After described main control board starts, obtain the first address resolution protocol prestored on described forwarding chip
ARP information index mapping table；
Check on the first ARP information index mapping table and described main control board prestored on described forwarding chip
The second ARP information preserved indexes the most consistent of mapping table；
If inconsistent, that will preserve on the first ARP information index mapping table on forwarding chip or master control borad the
In two ARP information index mapping tables, the correspondence relationship information of inconsistent ARP and resource index is deleted.
2. the method for claim 1, it is characterised in that described first ARP information index mapping table
The first bitmap it is stored in when switching to main control board as slave control board for described main control board；
Described second ARP information index mapping table is to be stored in the second bitmap during the startup of described main control board
's.
3. method as claimed in claim 2, it is characterised in that it is characterized in that, turn described in described inspection
Send out the first ARP information index mapping table and the 2nd ARP of preservation on described main control board prestored on chip
The most unanimously specifically including of information index mapping table:
Check and whether be stored in master on the first ARP information index mapping table of the bitmap being stored in forwarding chip
With non-existent ARP and resource index in the second ARP information index mapping table of the bitmap of master control borad
Correspondence relationship information；Or,
Check in the second ARP information index mapping table of the bitmap being stored in main control board and whether be stored in
Non-existent ARP and resource index on first ARP information index mapping table of the bitmap of forwarding chip
Correspondence relationship information；
If so, determine that the first ARP information index mapping table differs with described second ARP information index mapping table
Cause.
4. a list item synchronizer, is applied to the main control board of the network equipment, it is characterised in that described net
Network equipment also includes forwarding chip and slave control board, when described main control board fault, by described standby
New main control board, described device is switched to include with master control borad:
Acquiring unit, after starting when described main control board, obtains the prestored on described forwarding chip
One ARP information index mapping table；
Inspection unit, for checking the first ARP information index mapping table and the institute prestored on described forwarding chip
State the second ARP information preserved on main control board and index the most consistent of mapping table；
Delete unit, for when described first ARP information index mapping table and described second ARP information index
When mapping table is inconsistent, by preserve on the first ARP information index mapping table on forwarding chip or master control borad
In second ARP information index mapping table, inconsistent ARP is deleted with the correspondence relationship information of resource index
Remove.
5. device as claimed in claim 4, it is characterised in that described first ARP information index mapping table
The first bitmap it is stored in when switching to main control board as slave control board for described main control board；
Described second ARP information index mapping table is to be stored in the second bitmap during the startup of described main control board
's.
6. device as claimed in claim 5, it is characterised in that it is characterized in that, described inspection unit has
Body is used for:
Check and whether be stored in master on the first ARP information index mapping table of the bitmap being stored in forwarding chip
With non-existent ARP and resource index in the second ARP information index mapping table of the bitmap of master control borad
Correspondence relationship information；Or,
Check in the second ARP information index mapping table of the bitmap being stored in main control board and whether be stored in
Non-existent ARP and resource index on first ARP information index mapping table of the bitmap of forwarding chip
Correspondence relationship information；
If so, determine that the first ARP information index mapping table differs with described second ARP information index mapping table
Cause.
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|---|---|---|---|
| CN201510486677.5A CN105939203B (en) | 2015-08-10 | 2015-08-10 | List item synchronous method and device |
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|---|---|---|---|
| CN201510486677.5A CN105939203B (en) | 2015-08-10 | 2015-08-10 | List item synchronous method and device |
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| CN109361621A (en) * | 2018-11-15 | 2019-02-19 | 新华三技术有限公司 | Shared resource processing method and the network equipment under multi-tenant environment |
| CN110034973A (en) * | 2018-12-19 | 2019-07-19 | 锐捷网络股份有限公司 | Forwarding mapping listing maintenance and device based on the network equipment |
| CN113949658A (en) * | 2021-10-25 | 2022-01-18 | 迈普通信技术股份有限公司 | Table item processing method, system, device, electronic equipment and storage medium |
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| CN110034973A (en) * | 2018-12-19 | 2019-07-19 | 锐捷网络股份有限公司 | Forwarding mapping listing maintenance and device based on the network equipment |
| CN113949658A (en) * | 2021-10-25 | 2022-01-18 | 迈普通信技术股份有限公司 | Table item processing method, system, device, electronic equipment and storage medium |
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| Publication number | Publication date |
|---|---|
| CN105939203B (en) | 2019-04-05 |
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