CN107547397A - Entry management method and device - Google Patents
Entry management method and device Download PDFInfo
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- CN107547397A CN107547397A CN201710357776.2A CN201710357776A CN107547397A CN 107547397 A CN107547397 A CN 107547397A CN 201710357776 A CN201710357776 A CN 201710357776A CN 107547397 A CN107547397 A CN 107547397A
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Abstract
The invention provides entry management method and device.In the present invention, the resource ID that master control borad passes through the carrying first order ENCAP resources in the associated second level NHLFE list items of next-hop, it can realize and the index of second level ENCAP list items is added in first order ENCAP list items corresponding to the resource ID, realize associating for first order ENCAP list items and second level ENCAP list items, next-hop content in this each ECMP issued compared to existing interface plate to master control borad, which is ranked up, can greatly save the time, improve efficiency and realize very simple, it is easy to manage as a whole, is also not in wrong bag, random situations such as wrapping.
Description
Technical field
The present invention relates to the network communications technology, more particularly to a kind of entry management method and device.
Background technology
The master control borad of interchanger distributes a segment identification (ID) and is continuously used for encapsulation (ENCAP) resource that forwarding of equal value uses
And it is synchronized to each interface board.Here resource ID is substantially the address mark of resource.Such as master control borad distribution resource ID scope
Totally 128 ENCAP resources and each interface board is synchronized to 127 since 0, each interface board uses this 128 ENCAP resources.
ENCAP resources are used to deposit ENCAP list items, and ENCAP list items are by the ID of its residing ENCAP resource as index.
In order to support across chip forwarding, therefore, to assure that different veneers is found identical according to identical ENCAP table item indexes
ENCAP contents in table.A kind of conventional method is：Each interface board is according to the unified each equivalence issued to master control borad of principle of ordering
Next-hop content in multipath (ECMP) is ranked up, by sorted next-hop content such as private network tags, tunnel label
Deng generating ENCAP list items respectively in order and be issued to ENCAP resources.Due to the next-hop content of the ECMP on each interface board
It is consistent, and each interface board is the same to the principle of next-hop content ordering, so the row of final each interface board
Sequence result is also consistent, can so ensure that the ENCAP contents of distinct interface plate difference chip are consistent.
But sequence is very time-consuming, also, interface board newly learns to new a next-hop or needs to delete every time
During except a next-hop, each interface board needs to resequence, and can take a substantial amount of time.
The content of the invention
The invention provides entry management method and device, to avoid interface board from sorting caused the problems such as expending the time.
Technical scheme provided by the invention includes：
A kind of entry management method, this method include：
The second level NHLFE list items that the next-hop generation that master control borad is forwarding equivalence class FEC is associated, from specified first
A resource ID is chosen in level ENCAP resource ID scopes, the resource ID of selection is carried and is issued in the NHLFE list items of the second level
Each interface board；
Interface board parses resource ID from the second level NHLFE list items of reception, and is based on the second level NHLFE
List item generates second level ENCAP list items, the second level ENCAP list items is deposited to second level ENCAP resources, by described second
The index of level ENCAP list items is added to first order ENCAP list items corresponding to the resource ID, the second level ENCAP list items
Index the resource ID in second level ENCAP resource occupation for second level ENCAP list items.
A kind of list item managing device, the device are applied to the network equipment, including：NHLFE list item lists applied to master control borad
Member, the ENCAP list item units applied to interface board；
The NHLFE list items unit, the second level NHLFE associated for the next-hop generation for forwarding equivalence class FEC
List item, an and resource ID is chosen from specified first order ENCAP resource ID scopes, the resource ID of selection is carried the
Each interface board is issued in two level NHLFE list items；
ENCAP list item units, for parsing resource ID from the second level NHLFE list items of reception, and it is based on institute
Second level NHLFE list items generation second level ENCAP list items are stated, the second level ENCAP list items are deposited to second level ENCAP and provided
Source, the index of the second level ENCAP list items is added to first order ENCAP list items corresponding to the resource ID, described second
The index of level ENCAP list items is resource ID of the second level ENCAP list items in second level ENCAP resource occupation.
In the present invention it can be seen from above scheme, master control borad passes through in the associated second level NHLFE list items of next-hop
The middle resource ID for carrying first order ENCAP resources, can realize the index of second level ENCAP list items being added to the resource ID pair
In the first order ENCAP list items answered, by the way that the index of second level ENCAP list items is added into corresponding first order ENCAP list items,
Realize associating for first order ENCAP list items and second level ENCAP list items, it is ensured that different veneers is according to identical ENCAP tables
Entry index finds identical ENCAP contents in table, the next-hop in this each ECMP issued compared to existing interface plate to master control borad
Content, which is ranked up, can greatly save the time, improve efficiency；
Further, in the present invention, because the resource ID issued by master control borad is used as object of reference by second level ENCAP tables
The index of item is added in first order ENCAP list items corresponding to the resource ID, and its realization is very simple, is easy to manage as a whole,
Situations such as being not in wrong bag, random bag.
Brief description of the drawings
Accompanying drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the disclosure
Example, and be used to together with specification to explain the principle of the disclosure.
Fig. 1 is forwarding structural representation provided by the invention；
Fig. 2 is flow chart provided by the invention；
Fig. 3 is embodiment schematic diagram provided by the invention；
Fig. 4 is resource structures schematic diagram provided in an embodiment of the present invention；
Fig. 5 is ENCAP resources schematic diagram provided in an embodiment of the present invention；
Fig. 6 is another ENCAP resources schematic diagram provided in an embodiment of the present invention；
Fig. 7 is structure drawing of device provided by the invention.
Embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with the accompanying drawings with specific embodiment pair
The present invention is described in detail.
In MPLS L3VPN, after PE equipment receives message by interface, chip such as ARAD chips where the interface are held
Row forwarding as shown in Figure 1.The chip of interface board is designated as chip 1_1 where interface.As shown in figure 1, chip 1_1 is first according to message
Destination address find the ECMP list items of matching, include two forwarding equivalence class (FEC) of equal value, chip 1_ in ECMP list items
1 calculates a cryptographic Hash according to message content, and a FEC is selected from two FEC according to cryptographic Hash, it is assumed that selection FEC1.
The local interface of interface board, the then first order that chip 1_1 points to according to FEC1 where outgoing interface in FEC1 is assumed to be chip 1_1
ENCAP entry lookups are that message encapsulates private network tags based on ENCAP1 list items, and referred to according to ENCAP1 list items to ENCAP1 list items
To second level ENCAP entry lookups to ENCAP3 list items, be that the message for encapsulating private network tags seals again based on ENCAP3 list items
Tunnel label is filled, and the ARP table entry index in ENCAP3 list items finds corresponding ARP, to encapsulate private network tags
Message encapsulation is finally completed with the message encapsulation MAC related contents of tunnel label；The message for completing encapsulation is sent to this by chip 1_1
Outgoing interface corresponding to ground forwards.
And if the outgoing interface in FEC1 is not the local interface of chip 1_1 places interface board, this relates to turn across chip
Hair, for such a situation, the FEC1 first order ENCAP list items pointed to can be that the index of ENCAP1 list items is sent to by chip 1_1
Chip (being designated as chip 1_2), is entered according to said chip 1_1 by chip 1_2 to the encapsulation operation of message to message where outgoing interface
Row encapsulation.And this is just necessary to ensure that the ENCAP list items of distinct interface plate want Complete Synchronization, to accomplish according to identical ENCAP tables
Entry index finds identical ENCAP contents in table.
In order to ensure different chips or the ENCAP list item Complete Synchronizations of distinct interface plate, to accomplish each interface board according to phase
Same ENCAP table item indexes find identical ENCAP contents in table, and the invention provides the flow shown in Fig. 2.
Referring to Fig. 2, Fig. 2 is method flow diagram provided by the invention.As shown in Fig. 2 the flow may include following steps：
Step 201, the second level next-hop label forwarding access that the next-hop generation that master control borad is FEC is associated
(NHLFE：Next Hop Label Forwarding Entry) list item, is selected from specified first order ENCAP resource ID scopes
A resource ID is taken, the resource ID of selection is carried and is issued to each interface board in the NHLFE list items of the second level.
As one embodiment of the present of invention, in the present invention, second level NHLFE list items are corresponding this carry next-hop
Tunnel label.
As one embodiment of the present of invention, in the present invention, the first order ENCAP resource ID scopes specified are master control borads
The ID for being used to deposit the ENCAP resources (being designated as first order ENCAP resources) of first order ENCAP list items of pre- first to file, such as, it is main
The first order ENCAP resources of the control pre- first to file of plate be from ID 1000 to ID be 1127 totally 128 resources.
Step 202, interface board parses resource ID from the second level NHLFE list items of reception, based on second level NHLFE tables
Item generation second level ENCAP list items, second level ENCAP list items are deposited to second level ENCAP resources, by second level ENCAP tables
The index of item is added to first order ENCAP list items corresponding to resource ID.
As one embodiment of the present of invention, the indexes of second level ENCAP list items is second level ENCAP list items in the second level
The resource ID of ENCAP resource occupation.
As one embodiment of the present of invention, in step 202, master control borad adds by the index of second level ENCAP list items
Add to before first order ENCAP list items corresponding to the resource ID, can further comprise：
Step a1, master control borad are the associated first order NHLFE list items of next-hop generation and are issued to each equipment.
Here first order NHLFE list items carry private network tags.
Step a2, interface board is according to the first order NHLFE list items generation first order ENCAP list items received, by the first order
ENCAP list items are deposited to the resource ID parsed；The resource ID parsed belongs to first order ENCAP resources.
After execution of step a1 and step a2, so that it may continue executing with above-mentioned master control borad by second level ENCAP list items
Index is added to first order ENCAP list items corresponding to the resource ID.
As one embodiment of the present of invention, the index of second level ENCAP list items to be added to preventing subsequent error
First order ENCAP list items, in above-mentioned steps 201, the resource ID that master control borad is chosen is current not by the associated of other next-hops
Second level NHLFE list items take.
So far, flow shown in Fig. 2 is completed.
As can be seen that in the present invention, master control borad in the associated second level NHLFE list items of next-hop by carrying first
The resource ID of level ENCAP resources, can realize the index of second level ENCAP list items being added to the first order corresponding to the resource ID
In ENCAP list items, by the way that the index of second level ENCAP list items is added into corresponding first order ENCAP list items, first is realized
Level ENCAP list items are associated with second level ENCAP list items, it is ensured that different veneers is found according to identical ENCAP table item indexes
Identical ENCAP contents in table, this next-hop content compared in each ECMP that existing interface plate issues to master control borad are arranged
Sequence can greatly save the time, improve efficiency；
Further, in the present invention, because the resource ID issued by master control borad is used as object of reference by second level ENCAP tables
The index of item is added in first order ENCAP list items corresponding to the resource ID, and its realization is very simple, is easy to manage as a whole,
Situations such as being not in wrong bag, random bag.
Flow shown in Fig. 2 is described below by a specific embodiment：
Referring to Fig. 3, Fig. 3 is embodiment schematic diagram provided by the invention.In figure 3, if the first order of master control borad application
ENCAP resource IDs scope is 0~127, and second level ENCAP resource IDs scope is 1000~1127.The exemplified each interfaces of Fig. 4
First order ENCAP resources, the structure of second level ENCAP resources on plate.
In figure 3, if the ECMP for reaching a certain destination is corresponding with two FEC, respectively FEC1, FEC2.
For FEC1,
The second level NHLFE list items (being designated as NHLFE list item 2_1) that the next-hop generation that master control borad is FEC1 is associated, from
A resource ID not taken by other second level NHLFE list items is chosen in first order ENCAP resource IDs scope (0~127), it is false
Resource ID such as selection is 3.The resource ID of selection is that 3 carryings are sent to each interface board in NHLFE list items 2_1 by master control borad.
The first order NHLFE list items (being designated as NHLFE list item 1_1) that the next-hop generation that master control borad is FEC1 is associated, will
NHLFE list items 1_1 is sent to each interface board.
Described by taking interface board 1 as an example, other interface boards are similar.
Interface board 1 receives NHLFE list item 2_1, and resource ID i.e. 3 are parsed from NHLFE list items 2_1.
Interface board 1 receives NHLFE list item 1_1, and (ENCAP is designated as based on NHLFE list items 1_1 generation first order ENCAP list items
List item 1_1), ENCAP list items 1_1 is deposited to the above-mentioned resource ID parsed i.e. 3.Fig. 5 shows that interface board 1 deposits ENCAP
List item 1_1 structure.
Interface board 1 is based on NHLFE list items 2_1 generation second level ENCAP list items (being designated as ENCAP list item 2_1), by ENCAP
List item 2_1 is deposited to second level ENCAP resources (ID scopes are 1000~1127).If ENCAP list items 2_1 is in the second level
The resource ID of ENCAP resource occupation is 1010.Fig. 5 shows that interface board 1 deposits ENCAP list items 2_1 structure.
ENCAP list items 2_1 is 1010 as ENCAP list items in the resource ID of second level ENCAP resource occupation by interface board 1
2_1 index is added to ENCAP list items 1_1.
So far, the description for the ENCAP list items that FEC1 is pointed to is completed.
For FEC2,
The second level NHLFE list items (being designated as NHLFE list item 2_2) that the next-hop generation that master control borad is FEC2 is associated, from
A resource ID not taken by other second level NHLFE list items is chosen in first order ENCAP resource IDs scope (0~127), it is false
Resource ID such as selection is 4.The resource ID of selection is that 4 carryings are sent to each interface board in NHLFE list items 2_2 by master control borad.
The first order NHLFE list items (being designated as NHLFE list item 1_2) that the next-hop generation that master control borad is FEC2 is associated, will
NHLFE list items 1_2 is sent to each interface board.
Still described by taking interface board 1 as an example, other interface boards are similar.
Interface board 1 receives NHLFE list item 2_2, and resource ID i.e. 4 are parsed from NHLFE list items 2_2.
Interface board 1 receives NHLFE list item 1_2, and (ENCAP is designated as based on NHLFE list items 1_2 generation first order ENCAP list items
List item 1_2), ENCAP list items 1_2 is deposited to the above-mentioned resource ID parsed i.e. 4.Fig. 6 shows interface board on the basis of Fig. 5
1 storage ENCAP list items 1_2 structure.
Interface board 1 is based on NHLFE list items 2_2 generation second level ENCAP list items (being designated as ENCAP list item 2_2), by ENCAP
List item 2_2 is deposited to second level ENCAP resources (ID scopes are 1000~1127).If ENCAP list items 2_2 is in the second level
The resource ID of ENCAP resource occupation is 1020.Fig. 6 shows that interface board 1 deposits ENCAP list items 2_2 knot on the basis of Fig. 5
Structure.
ENCAP list items 2_2 is 1020 as ENCAP list items in the resource ID of second level ENCAP resource occupation by interface board 1
2_2 index is added to ENCAP list items 1_2.
So far, the description for the ENCAP list items that FEC2 is pointed to is completed.
The embodiment shown in Fig. 3 is described above, it can be seen that in the present embodiment, by by the second level
The index of ENCAP list items is added to first order ENCAP list items, and each interface board can be completely secured according to identical ENCAP list items
Index finds identical ENCAP contents in table.
It should be noted that in the present invention, when above-mentioned next-hop is deleted, master control borad can reclaim before at this
Entrained resource ID in the associated second level NHLFE list items of next-hop, also imply that now the resource ID being recovered is worked as
It is preceding not taken by the associated second level NHLFE list items of other next-hops；Master control borad further sends deletion notice to respectively connecing
Oralia.
Interface board, which receives, deletes notice, deletes the associated second level ENCAP list items of the next-hop, and from the next-hop phase
The index of second level NHLFE list items is deleted in the first order ENCAP list items of association.The renewal of ENCAP list items is realized in time.
Similarly, then can be according to flow shown in above-mentioned Fig. 2 when FEC newly increases next-hop.Repeat no more.
It should also be noted that, in the present invention, when FEC next-hop is disabled black hole next-hop, master control borad according to
So performed according to flow shown in above-mentioned Fig. 2, accordingly even when some interface boards are black holes, some interface boards are not black holes, because under
The sequence number that the associated second level NHLFE list items of one jump carry is identical, and resource will not use mistake, is not in the report of false enclosures
Text.
Method provided by the invention is described above, device provided by the invention is described below：
Referring to Fig. 7, Fig. 7 is structure drawing of device provided by the invention.The device is applied to the network equipment, as shown in fig. 7, should
Device includes：NHLFE list items unit applied to master control borad, the ENCAP list item units applied to interface board.
Wherein, NHLFE list items unit, the second level NHLFE associated for the next-hop generation for forwarding equivalence class FEC
List item, an and resource ID is chosen from specified first order ENCAP resource ID scopes, the resource ID of selection is carried the
Each interface board is issued in two level NHLFE list items；
ENCAP list item units, for parsing resource ID from the second level NHLFE list items of reception, and it is based on institute
Second level NHLFE list items generation second level ENCAP list items are stated, the second level ENCAP list items are deposited to second level ENCAP and provided
Source, the index of the second level ENCAP list items is added to first order ENCAP list items corresponding to the resource ID, described second
The index of level ENCAP list items is resource ID of the second level ENCAP list items in second level ENCAP resource occupation.
Preferably, NHLFE list items unit be additionally operable to for the associated first order NHLFE list items of next-hop generation and under
It is sent to each interface board；
Preferably, the ENCAP list items unit is further used for being added to by the index of the second level ENCAP list items
Before first order ENCAP list items corresponding to the resource ID, according to the first order NHLFE list items generation first order received
ENCAP list items, the first order ENCAP list items are deposited to the resource ID parsed；The resource ID parsed belongs to
One-level ENCAP resources.
Preferably, the resource ID that the NHLFE list items unit is chosen from specified first order ENCAP resource ID scopes is worked as
It is preceding not taken by the associated second level NHLFE list items of other next-hops.
Preferably, the NHLFE list items unit reclaims the resource of selection further when the next-hop is deleted
ID, and deletion notice is sent to each interface board；
The ENCAP list items unit further receives described delete and notified, deletes the associated second level of the next-hop
ENCAP list items, and delete from the first order ENCAP list items index of the second level NHLFE list items.
Preferably, the next-hop is disabled black hole next-hop, or is the next-hop in upstate.
So far, the structure description of Fig. 7 shown devices is completed.
The upper only presently preferred embodiments of the present invention, is not intended to limit the invention, all spirit in the present invention
Within principle, any modification, equivalent substitution and improvements done etc., it all should be included within the scope of protection of the invention.
Claims (10)
1. a kind of entry management method, is characterised by, this method includes：
The second level NHLFE list items that the next-hop generation that master control borad is forwarding equivalence class FEC is associated, from the specified first order
A resource ID is chosen in ENCAP resource ID scopes, the resource ID of selection is carried and is issued to respectively in the NHLFE list items of the second level
Interface board；
Interface board parses resource ID from the second level NHLFE list items of reception, and is based on the second level NHLFE list items
Second level ENCAP list items are generated, the second level ENCAP list items are deposited to second level ENCAP resources, by the second level
The index of ENCAP list items is added to first order ENCAP list items corresponding to the resource ID, the rope of the second level ENCAP list items
It is cited as resource ID of the second level ENCAP list items in second level ENCAP resource occupation.
2. according to the method for claim 1, it is characterised in that be added to by the index of the second level ENCAP list items
Before first order ENCAP list items corresponding to the resource ID, this method further comprises：
Master control borad is the associated first order NHLFE list items of next-hop generation and is issued to each interface board；
Interface board is according to the first order NHLFE list items generation first order ENCAP list items received, by the first order ENCAP
List item is deposited to the resource ID parsed；The resource ID parsed belongs to first order ENCAP resources.
3. according to the method for claim 1, it is characterised in that master control borad is from specified first order ENCAP resource ID scopes
The resource ID of middle selection is current not to be taken by the associated second level NHLFE list items of other next-hops.
4. method according to any one of claims 1 to 3, it is characterised in that this method further comprises：
When the next-hop is deleted, the resource ID of master control borad recovery selection, and deletion notice is sent to each interface board；
Interface board receive it is described delete notice, delete the associated second level ENCAP list items of the next-hop, and from described first
The index of the second level NHLFE list items is deleted in level ENCAP list items.
5. method according to any one of claims 1 to 3, it is characterised in that the next-hop is that disabled black hole is next
Jump, or be the next-hop in upstate.
6. a kind of list item managing device, is characterised by, the device is applied to the network equipment, and the device includes：Applied to master control borad
NHLFE list items unit, the ENCAP list item units applied to interface board；
The NHLFE list items unit, the second level NHLFE list item associated for the next-hop generation for forwarding equivalence class FEC,
And a resource ID is chosen from specified first order ENCAP resource ID scopes, the resource ID of selection is carried in the second level
Each interface board is issued in NHLFE list items；
ENCAP list item units, for parsing resource ID from the second level NHLFE list items of reception, and based on described the
Two level NHLFE list items generate second level ENCAP list items, and the second level ENCAP list items are deposited to second level ENCAP resources,
The index of the second level ENCAP list items is added to first order ENCAP list items corresponding to the resource ID, the second level
The index of ENCAP list items is resource ID of the second level ENCAP list items in second level ENCAP resource occupation.
7. device according to claim 6, it is characterised in that the NHLFE list items unit is additionally operable to as the next-hop
The associated first order NHLFE list items of generation are simultaneously issued to each interface board；
The ENCAP list items unit is further used for the index of the second level ENCAP list items being added to the resource ID
, will according to the first order NHLFE list items generation first order ENCAP list items received before corresponding first order ENCAP list items
The first order ENCAP list items are deposited to the resource ID parsed；The resource ID parsed belongs to first order ENCAP moneys
Source.
8. device according to claim 6, it is characterised in that the NHLFE list items unit is from specified first order ENCAP
The resource ID chosen in resource ID scope is current not by the associated second level NHLFE list items occupancy of other next-hops.
9. according to any described device of claim 6 to 9, it is characterised in that the NHLFE list items unit is further described
When next-hop is deleted, the resource ID of selection is reclaimed, and sends deletion notice to each interface board；
The ENCAP list items unit further receives described delete and notified, deletes the associated second level ENCAP of the next-hop
List item, and delete from the first order ENCAP list items index of the second level NHLFE list items.
10. according to any described device of claim 6 to 9, it is characterised in that the next-hop is that disabled black hole is next
Jump, or be the next-hop in upstate.
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| CN110661713A (en) * | 2019-10-22 | 2020-01-07 | 新华三信息安全技术有限公司 | Message forwarding method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110661713A (en) * | 2019-10-22 | 2020-01-07 | 新华三信息安全技术有限公司 | Message forwarding method and device |
| CN110661713B (en) * | 2019-10-22 | 2021-09-21 | 新华三信息安全技术有限公司 | Message forwarding method and device |
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