CN102142982A - Forwarding plane fault repair method and device - Google Patents
Forwarding plane fault repair method and device Download PDFInfo
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- CN102142982A CN102142982A CN2010105575454A CN201010557545A CN102142982A CN 102142982 A CN102142982 A CN 102142982A CN 2010105575454 A CN2010105575454 A CN 2010105575454A CN 201010557545 A CN201010557545 A CN 201010557545A CN 102142982 A CN102142982 A CN 102142982A
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Abstract
The embodiment of the invention aims to provide a forwarding plane fault repair method and a forwarding plane fault repair device. The method comprises the following steps of: when a forwarding plane fails to search a forwarding table, reporting abnormal information to a control plane, wherein the abnormal information at least comprises a forwarding table entry which fails to be searched; and when the control plane has the table entry which fails to be searched, retransmitting the table entry which fails to be searched. By adopting the technical scheme provided by the embodiment of the invention, because the table entry is retransmitted when the forwarding plane fails to search the forwarding table but the control plane has the corresponding table entry, a damaged forwarding table entry of the forwarding plane can be repaired in time, and problems of discarding a large number of messages and interrupting a service for a long time are solved when the forwarding table entry searched by network equipment is invalid.
Description
Technical field
The present invention relates to network communication field, relate in particular to a kind of fault of forwarding plane restorative procedure and device.
Background technology
The general process that message is transmitted has comprised the reception storage of message, and dissection process is searched and transmitted, encapsulation, several stages such as transmission.Under some situation, it is invalid that the Forwarding plane of the network equipment is searched forwarding-table item, causes a large amount of messages to be dropped, and causes professional interruption for a long time.For example, (Multi-Protocol Label Switch when MPLS) transmitting, uses label lookup MPLS to transmit, and the data of returning are invalid, cause network unusual, treat that message is dropped in multiprotocol label switching.And for example, (Internet Protocol, when IP) transmitting, (Forwarding information base, FIB) list item does not exist or can't hit the fib table item forwarding information base Internet protocol, causes network unusual, treats that message is dropped.Above-mentioned Forwarding plane is searched the invalid reason that has software or hardware of forwarding-table item, and software reason such as protocol processes are improper, and issuing message is lost, and data are by mistake rewriting etc., hardware reason such as bit saltus step, external memory fault etc.
A kind of timing update mechanism is arranged usually, such as usually for example upgrading fib table in 24 hours again on the router in the network equipment according to some cycles.Because the common update time that is provided with is all long, the time of utilizing this mechanism to recover fault is oversize, and service outage duration is long.
Summary of the invention
The purpose of the embodiment of the invention provides fault of forwarding plane restorative procedure and device, searches forwarding-table item when invalid in order to solve the network equipment, and a large amount of messages are dropped, the problem that the professional chief time interrupts.
The purpose of the embodiment of the invention is achieved through the following technical solutions:
A kind of fault of forwarding plane restorative procedure comprises:
Search when Forwarding plane and to transmit when failure,, comprise the forwarding-table item of searching failure in the described abnormal information at least to control plane report abnormal information;
When control plane exists describedly when searching the list item of failure, issue the described list item of searching failure again.
A kind of fault of forwarding plane prosthetic device comprises:
The report unit is used for searching when Forwarding plane and transmits when failure, reports abnormal information to control plane, comprises the forwarding-table item of searching failure in the described abnormal information at least;
Issue the unit, be used for existing describedly when searching the list item of failure, issue the described list item of searching failure again when control plane.
The technical scheme that adopts the embodiment of the invention to provide, because when Forwarding plane is searched when transmitting failure still there is corresponding list item in control plane, again issue this list item, can in time repair the forwarding-table item that Forwarding plane damages, solve the network equipment and searched forwarding-table item when invalid, a large amount of messages are dropped, the problem that the professional chief time interrupts.
Description of drawings
Fig. 1 is a Forwarding plane fault restoration method flow diagram in the one embodiment of the invention;
Fig. 2 is a Forwarding plane fault restoration device block diagram in the one embodiment of the invention.
Embodiment
Below in conjunction with Fig. 1 one embodiment of the invention is described:
Fig. 1 is a Forwarding plane fault restoration method flow diagram in the one embodiment of the invention.This method comprises:
102, search when Forwarding plane and transmit when failure,, comprise the forwarding-table item of searching failure in the described abnormal information at least to control plane report abnormal information.
Whether Forwarding plane is searched to transmit and is failed, and multiple judgment principle can be arranged.For example, can search, report abnormal information when perhaps list item is invalid immediately, also can repeatedly search less than list item less than list item, perhaps list item invalid after, report abnormal information again.For instance, in MPLS transmits, from the interface I message that to receive a label be L, Forwarding plane is searched the MPLS Label Forwarding Information Base with the label L of message, when searching less than list item, when perhaps list item is invalid, do the invalid counting of list item, after the invalid number of times of this label is accumulated to the numerical value that sets in advance, to control plane report abnormal information, this unexpected message comprises that this searches the forwarding-table item of failure, for example label L.This unexpected message can also comprise the list item classification, the purpose IP address of message, information such as message incoming interface.And for example, in IP transmits, from the interface I message that to receive a purpose IP be the D address, Forwarding plane is searched fib table with the purpose IP address D of message, when searching, when perhaps list item is invalid, report abnormal information to control plane less than list item, this unexpected message comprises that this searches the forwarding-table item of failure, for example purpose IP address D.This this unexpected message can also comprise the list item classification, information such as message incoming interface.
104, exist describedly when searching the list item of failure when control plane, issue the described list item of searching failure again.
When control plane does not exist describedly when searching the list item of failure, can also recomputate and describedly search the list item of failure and issue the described list item that obtains that recomputates.
For example, in MPLS transmits, after control plane is received abnormal information, the MPLS label list item of query software, if there is the list item of the label L correspondence in the abnormal information, then with this entry updating to Forwarding plane, if there is no this list item, then according to destination address, adopt multiprotocol label switching (Multi-Protocol Label Switch, MPLS), notified tag distribution module multiprotocol label switching (Multi-Protocol Label Switch is called for short MPLS), RSVP (Resource Reservation Protocol, RSVP), Border Gateway Protocol (Border Gateway Protocol, BGP) or other can carry out the agreement of label distribution, the notice upstream network device is upgraded the label mapping relations.If upgrade failure, then produce alarm and remind the user.
And for example, in IP transmits, after control plane is received abnormal information, the fib table item of query software, if there is the list item of the purpose IP address D correspondence in the abnormal information, then with this entry updating to Forwarding plane, if there is no this list item, then according to purpose IP address D, information such as incoming interface, adopt BGP, ospf (Open Shortest Path First, OSPF), Intermediate System-to-Intermediate System (Intermediate system to intermediate system, IS-IS) or other routing protocol updates or synchronization of routing information.If upgrade or synchronization failure, then produce alarm and remind the user.
For searching of related list item, (the A table is related with the B table, the A table is found in expression earlier, obtains the index of B table, looks into the B table again, obtain the content of B table), when contingency table is searched failure,, then issue this list item to Forwarding plane if there is the described list item of searching failure in control plane, if control plane does not have the described list item of searching failure, then produce alarm and remind the user.
Below in conjunction with Fig. 2 another embodiment of the present invention is described:
Fig. 2 is a Forwarding plane fault restoration device block diagram in the one embodiment of the invention.This device comprises report unit 202 and issues unit 204.Wherein,
Whether Forwarding plane is searched to transmit and is failed, and multiple judgment principle can be arranged.For example, can search, report abnormal information when perhaps list item is invalid immediately, also can repeatedly search less than list item less than list item, perhaps list item invalid after, report abnormal information again.For instance, in MPLS transmits, from the interface I message that to receive a label be L, Forwarding plane is searched the MPLS Label Forwarding Information Base with the label L of message, when searching less than list item, when perhaps list item is invalid, do the invalid counting of list item, after the invalid number of times of this label was accumulated to the numerical value that sets in advance, report unit 202 was to control plane report abnormal information, this unexpected message comprises that this searches the forwarding-table item of failure, for example label L.This unexpected message can also comprise the list item classification, the purpose IP address of message, information such as message incoming interface.And for example, in IP transmits, from the interface I message that to receive a purpose IP be the D address, Forwarding plane is searched fib table with the purpose IP address D of message, when searching less than list item, when perhaps list item was invalid, report unit 202 was to control plane report abnormal information, this unexpected message comprises that this searches the forwarding-table item of failure, for example purpose IP address D.This this unexpected message can also comprise the list item classification, information such as message incoming interface.
Described device can also comprise computing module, is used for not existing describedly when searching the list item of failure when control plane, can also recomputate and describedly search the list item of failure and issue the described list item that obtains that recomputates.
Described device can also comprise Alarm Unit, is used for producing alarm.
For example, in MPLS transmits, after control plane is received abnormal information, the MPLS label list item of query software, if there is the list item of the label L correspondence in the abnormal information, then issue unit 204 with this entry updating to Forwarding plane, if there is no this list item, then computing module is according to destination address, adopt multiprotocol label switching (Multi-Protocol Label Switch, MPLS), notified tag distribution module multiprotocol label switching (Multi-Protocol Label Switch is called for short MPLS), RSVP (Resource Reservation Protocol, RSVP), Border Gateway Protocol (Border Gateway Protocol, BGP) or other can carry out the agreement of label distribution, the notice upstream network device is upgraded the label mapping relations.If upgrade failure, then Alarm Unit produces alarm and reminds the user.
And for example, in IP transmits, after control plane is received abnormal information, the fib table item of query software, if there is the list item of the purpose IP address D correspondence in the abnormal information, then issue unit 204 with this entry updating to Forwarding plane, if there is no this list item, then computing module is according to purpose IP address D, information such as incoming interface, adopt BGP, ospf (Open Shortest Path First, OSPF), Intermediate System-to-Intermediate System (Intermediate system to intermediate system, IS-IS) or other routing protocol updates or synchronization of routing information.If upgrade or synchronization failure, then Alarm Unit produces alarm and reminds the user.
For searching of related list item, (the A table is related with the B table, the A table is found in expression earlier, obtains the index of B table, looks into the B table again, obtain the content of B table), when contingency table is searched failure,, then issue unit 204 and issue this list item to Forwarding plane if there is the described list item of searching failure in control plane, if control plane does not have the described list item of searching failure, then Alarm Unit produces alarm and reminds the user.
The technical scheme that adopts the embodiment of the invention to provide, because when Forwarding plane is searched when transmitting failure still there is corresponding list item in control plane, again issue this list item, when there is not corresponding list item in control plane, recomputate this list item and issue this list item, can in time repair the forwarding-table item that Forwarding plane damages, solved the network equipment and searched forwarding-table item when invalid, a large amount of messages are dropped, the problem that the professional chief time interrupts.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in the computer-readable recording medium, described storage medium can be ROM/RAM, disk or CD etc.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (4)
1. a fault of forwarding plane restorative procedure is characterized in that, comprising:
Search when Forwarding plane and to transmit when failure,, comprise the forwarding-table item of searching failure in the described abnormal information at least to control plane report abnormal information;
When control plane exists describedly when searching the list item of failure, issue the described list item of searching failure again.
2. method according to claim 1 is characterized in that, described method also comprises, when control plane does not exist describedly when searching the list item of failure, recomputates and describedly searches the list item of failure and issue the described list item that obtains that recomputates.
3. a fault of forwarding plane prosthetic device is characterized in that, comprising:
The report unit is used for searching when Forwarding plane and transmits when failure, reports abnormal information to control plane, comprises the forwarding-table item of searching failure in the described abnormal information at least;
Issue the unit, be used for existing describedly when searching the list item of failure, issue the described list item of searching failure again when control plane.
4. method according to claim 3 is characterized in that described device also comprises, computing module is used for not existing describedly when searching the list item of failure when control plane, recomputates and describedly searches the list item of failure and issue the described list item that obtains that recomputates.
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| CN2010105575454A CN102142982A (en) | 2010-11-23 | 2010-11-23 | Forwarding plane fault repair method and device |
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| CN2010105575454A CN102142982A (en) | 2010-11-23 | 2010-11-23 | Forwarding plane fault repair method and device |
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| CN107026790A (en) * | 2016-01-30 | 2017-08-08 | 华为技术有限公司 | A kind of transmission control method and equipment |
| CN107786450A (en) * | 2017-10-17 | 2018-03-09 | 新华三技术有限公司 | A kind of data message transmission method, device and machinable medium |
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Application publication date: 20110803 |