CN105847153A - Message forwarding method and network device - Google Patents
Message forwarding method and network device Download PDFInfo
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- CN105847153A CN105847153A CN201610183664.5A CN201610183664A CN105847153A CN 105847153 A CN105847153 A CN 105847153A CN 201610183664 A CN201610183664 A CN 201610183664A CN 105847153 A CN105847153 A CN 105847153A
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- rule
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- outgoing interface
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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
- H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
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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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- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention provides a message forwarding method and a network device, and relates to the communication field. The defect of configuring every prefix with the static LSP during the message forwarding by using the static LSP can be solved. The message forwarding method is characterized in that the network device is used to receive a message, and whether the message meets a matching rule included by a strategy route forwarding table can be determined; the strategy route forwarding table comprises the matching rule and one forwarding rule corresponding to the matching rule, and the forwarding rule comprises OUT label information, OUT interface information, and next-hop information; when the message meets the matching rule, the next-hop network device can be determined according to the forwarding rule, and multi-protocol label switching MPLS labels can be packaged for the message; and the message can be forwarded to the next-hop network device after the packaging of the multi-protocol label switching MPLS labels.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of message forwarding method and the network equipment.
Background technology
At MPLS (Multi-Protocol Label Switching, multi-protocol exchange) network
In, need to set up LSP (Label-Switch Path, label forwarding path), MPLS
Message forwards along LSP.LSP includes dynamic LSP and static LSP.Wherein, use dynamic
When state LSP E-Packets, the equipment in MPLS network is needed all to support the dynamic road of MPLS
By agreement and safeguard forward table information, equipment performance, personnel ability are required higher, safeguards into
This is higher.Using static LSP to E-Packet, the network equipment need not safeguard that MPLS is dynamic
Routing Protocol, the requirement to equipment and personnel is lower than dynamic LSP.
But, when using static LSP, MPLS network access device needs beforehand through appointment
Message prefix, outgoing label, outgoing interface, the mode of down hop set up LSP, and each report
Literary composition prefix is required for configuring a static LSP, and this results in static LSP and is not suitable for message
The network that prefix is more or message prefix often changes.After receiving message, true according to message prefix
Fixed corresponding outgoing label, outgoing interface, down hop, and then according to these information determined by message
It is transmitted to next-hop network equipment.
Due to the disadvantage mentioned above of static LSP, significantly limit the range of application of static LSP,
Cause operator to have to use dynamic LSP to carry out message forwarding, add network design and
The cost safeguarded.
Summary of the invention
The present invention provides a kind of message forwarding method and the network equipment, does not turns further according to message prefix
Transmit messages literary composition, need for the static LSP of each prefix configuration solving to use static LSP to E-Packet
Shortcoming, alleviate the static LSP configuration load of the network equipment.
For reaching above-mentioned purpose, embodiments of the invention adopt the following technical scheme that
First aspect, discloses a kind of message forwarding method, including:
The network equipment receives message, it is judged that whether described message meets policybased routing forward table includes
Matched rule；Described policybased routing forward table includes described matched rule and mates with described
The forwarding rule that rule is corresponding, described forwarding rule includes that outgoing label information, outgoing interface are believed
Breath and next hop information；
If described message meets described matched rule, the described network equipment then forwards rule according to described
Then determine next-hop network equipment, and be that described message encapsulates multi-protocol exchange MPLS label；
The described network equipment is after described next-hop network device forwards encapsulation MPLS label
Message.
In conjunction with first aspect, in the first possible implementation of first aspect,
Before the described network equipment receives message, described method also includes:
Forward regular and described matched rule described in network equipments configuration, determine that described forwarding is advised
It is then effective；
The described network equipment creates and includes that described forwarding is regular and the described plan of described matched rule
Slightly route forwarding table.
In conjunction with the first possible implementation of first aspect, the second in first aspect can
In the implementation of energy,
Described network equipments configuration forwards rule and matched rule to specifically include:
The described network equipment determines the attribute information E-Packeted, and generates according to described attribute information
Matching strategy, the described matching strategy described network equipment of instruction only forwards and meets described attribute information
Message；Described attribute information includes preset length or pre-set priority or default incoming interface；
The described network equipment according to described attribute information determine label information, outgoing interface information with
And next hop information；
The described network equipment is believed according to the outgoing label information determined, outgoing interface information and down hop
Breath generates described forwarding rule.
In conjunction with the first possible implementation of first aspect, can at the third of first aspect
In the implementation of energy, if the MPLS functional configuration of the outgoing interface of the described network equipment becomes
Changing, after described network equipments configuration forwards rule and matched rule, described method also includes:
The described network equipment judges whether the outgoing interface information that described forwarding rule includes indicates
Described outgoing interface；
If the outgoing interface information that described forwarding rule includes indicates described outgoing interface, then judge institute
State the next-hop network equipment forwarding rule to indicate the most effective；
If the described network equipment judges that the described next-hop network equipment forwarding rule to indicate is effective
And described outgoing interface supports MPLS function, it is determined that described forwarding rule is effective.
In conjunction with in the third possible implementation of first aspect, at the 4th kind of first aspect
In possible implementation, forward the regular next-hop network equipment indicated effectively but institute if described
State outgoing interface and do not support MPLS function,
Then, the described network equipment creates and includes effectively forwarding regular and described effective forwarding rule right
After the policybased routing forward table of the matched rule answered, described method also includes: delete described plan
Slightly route forwarding table.
In conjunction with the first possible implementation of first aspect, can the 5th kind of first aspect
In the implementation of energy, if the route of the described network equipment changes, the described network equipment is joined
After putting forwarding rule and matched rule, described method also includes:
Judge whether the next hop information that described forwarding rule includes indicates route situation of change
Corresponding next-hop network equipment；
If the next hop information that described forwarding rule includes indicates described route situation of change pair
The next-hop network equipment answered, then judge that the described outgoing interface forwarding rule to indicate is the most effective；
If the described outgoing interface forwarding rule instruction is effective and the instruction of described route situation of change adds
Add route, it is determined that described forwarding rule is effective.
In conjunction with the 5th kind of possible implementation of first aspect, can the 6th kind of first aspect
In the implementation of energy, forward the outgoing interface of rule instruction effectively if described, but described routing variable
Route is deleted in the instruction of change situation,
Then, the described network equipment creates and includes effectively forwarding regular and described effective forwarding rule right
After the policybased routing forward table of the matched rule answered, described method also includes: delete described plan
Slightly route forwarding table.
Second aspect, discloses a kind of network equipment, including:
Receive unit, be used for receiving message；
Judging unit, for judge whether described message meet that policybased routing forward table includes
Join rule；Described policybased routing forward table include described matched rule and with described matched rule
A corresponding forwarding rule, described forwarding rule include outgoing label information, outgoing interface information with
And next hop information；
Determine unit, if judging that described message meets described coupling rule for described judging unit
Then, then next-hop network equipment is determined according to described forwarding rule；
Encapsulation unit, for encapsulating MPLS label for described message；
Transmitting element, for after described next-hop network device forwards encapsulation MPLS label
Message.
In conjunction with second aspect, in the first possible implementation of second aspect,
Also include dispensing unit, creating unit,
Described dispensing unit is used for, and before described reception unit receives message, configuration is described to be turned
Send out regular and described matched rule；
Described determine that unit is additionally operable to, determine that described forwarding rule is effective；
Described creating unit is used for, and creates and includes that described forwarding is regular and the institute of described matched rule
State policybased routing forward table.
In conjunction with in the first possible implementation of second aspect, at the second of second aspect
In possible implementation,
Described dispensing unit specifically for, determine the attribute information E-Packeted, according to described genus
Property information generate matching strategy, described matching strategy indicates the described network equipment only to forward and meet institute
State the message of attribute information；Described attribute information includes preset length or pre-set priority or presets
Incoming interface；
Label information, outgoing interface information and down hop letter is determined according to described attribute information
Breath；
Described turning is generated according to the outgoing label information determined, outgoing interface information and next hop information
Send out rule.
In conjunction with the first possible implementation of second aspect, can at the third of second aspect
In the implementation of energy, if the MPLS functional configuration of the outgoing interface of the described network equipment becomes
Changing, described judging unit is additionally operable to, and forwards rule and coupling rule in the configuration of described dispensing unit
After then, whether the outgoing interface information forwarding rule to include indicates described outgoing interface；
If the outgoing interface information that described forwarding rule includes indicates described outgoing interface, then judge institute
State the next-hop network equipment forwarding rule to indicate the most effective；
If judging, the described next-hop network equipment forwarding rule instruction is effective and described outgoing interface
Support MPLS function, it is determined that described forwarding rule is effective.
In conjunction with the third possible implementation of second aspect, can the 4th kind of second aspect
In the implementation of energy, also include deleting unit,
If the described next-hop network equipment forwarding rule instruction is effective but described outgoing interface does not props up
Hold MPLS function,
Then, described deletion unit is used for, and creates in described creating unit and includes effectively forwarding rule
And after described effective policybased routing forward table forwarding matched rule corresponding to rule, delete institute
State policybased routing forward table.
In conjunction with the first possible implementation of second aspect, can the 5th kind of second aspect
In the implementation of energy, if the route of the described network equipment changes, described judging unit is also
For, after the configuration of described dispensing unit forwards rule and matched rule, it is judged that described turn
Send out whether the next hop information that includes of rule indicates down hop net corresponding to route situation of change
Network equipment；
If the next hop information that described forwarding rule includes indicates described route situation of change pair
The next-hop network equipment answered, then judge that the outgoing interface in described forwarding rule is the most effective；
If the outgoing interface in described forwarding rule is effective and the instruction of described route situation of change is added
Route, it is determined that described forwarding rule is effective.
In conjunction with the 5th kind of possible implementation of second aspect, can the 6th kind of second aspect
In the implementation of energy, also include deleting unit, if the described outgoing interface forwarding rule instruction has
Effect, but route is deleted in the instruction of described route situation of change,
Described deletion unit is used for, and creates in described creating unit and includes effectively forwarding rule and institute
After stating the policybased routing forward table of the matched rule effectively forwarding rule corresponding, delete described plan
Slightly route forwarding table.
The message forwarding method of embodiment of the present invention offer and network equipment MAC Address notice side
Method and core node, be pre-created matched rule and forward rule, and the message received meets
Join rule just according to forwarding rule to E-Packet.Wherein, rule is forwarded to include outgoing label, go out to connect
Mouth and the information of next-hop device.It is to say, rely on outgoing label, outgoing interface and down hop to set
Standby information can realize message and forward, and so, it is to avoid E-Packet according to message prefix, solves
The static LSP of use of having determined E-Packets needs to configure the shortcoming of static LSP for each prefix,
Alleviate the static LSP configuration load of the network equipment.Meanwhile, the network equipment need not safeguard
MPLS dynamic routing protocol, still supports static LSP.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below
The accompanying drawing used required in embodiment or description of the prior art will be briefly described, aobvious and
Easily insight, the accompanying drawing in describing below is only some embodiments of the present invention, for this area
From the point of view of those of ordinary skill, on the premise of not paying creative work, it is also possible to according to these
Accompanying drawing obtains other accompanying drawing.
Fig. 1 is the Organization Chart of MPLS network；
The schematic flow sheet of the message forwarding method that Fig. 2 provides for the embodiment of the present invention 1；
The flow process signal confirming to forward the method for rule that Fig. 3 provides for the embodiment of the present invention 1
Figure；
The another kind of flow process confirming to forward the method for rule that Fig. 4 provides for the embodiment of the present invention 1
Schematic diagram；
The structured flowchart of the network equipment that Fig. 5 provides for the embodiment of the present invention 2；
Another structured flowchart of the network equipment that Fig. 6 provides for the embodiment of the present invention 2；
Another structured flowchart of the network equipment that Fig. 7 provides for the embodiment of the present invention 2.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, to the technical side in the embodiment of the present invention
Case is clearly and completely described, it is clear that described embodiment is only the present invention one
Divide embodiment rather than whole embodiments.Based on the embodiment in the present invention, this area is general
All other embodiments that logical technical staff is obtained under not making creative work premise,
Broadly fall into the scope of protection of the invention.
MPLS network utilizes label (label) to carry out data forwarding.When message enters network
Time, for the label of its distribution regular length, and label to be packaged together with message, whole
In individual repeating process, switching node forwards according only to label.As it is shown in figure 1, MPLS
Network includes: CE (Customer Edge) equipment (CE1 and CE2) and MPLS core
Heart net；MPLS core net includes PE (Provider Edge) equipment PE1 and PE2
And P (Provider) equipment P1 and P2.
Wherein, CE is customer edge, can be router, it is also possible to be switch or
Main frame.PE is provider edge, is positioned at the edge of MPLS core net.P is clothes
The P of (i.e. MPLS core net), not direct with CE phase in business provider network
Even.
At present, PE equipment (MPLS network access device) needs for the configuration of each prefix quiet
State LSP, when message prefix is more or message prefix often changes, then can greatly increase PE
The configuration of equipment meets.It addition, PE equipment only supports the message prefix specified so that at present
Configuration underaction.
The principle of the present invention is, PE equipment determines according to existing matched rule and mates rule
Then corresponding forwarding rule, matched rule constitutes policybased routing forward table with forwarding rule.Message
After matching matched rule, E-Packet according to forwarding rule.Forward rule include outgoing label,
Outgoing interface, down hop, no longer rely on message prefix to forward as conventional measures route,
Configure static LSP without for each message prefix, save expense.Make static state simultaneously
The application scenarios of LSP is no longer limited by message prefix, improves the suitability of static LSP.
Embodiment 1:
The embodiment of the present invention provides a kind of message forwarding method, as in figure 2 it is shown, described method bag
Include following steps:
101, the network equipment receives message, it is judged that whether described message meets described policybased routing
The matched rule that forward table includes.
In implementing, i.e. judge the attribute the; whether attribute of this message includes with matched rule
Join.Example, if matched rule be message between X byte～Y byte, then judge this report
Whether the length of literary composition is between X byte～Y byte.Or, matched rule be incoming interface be A,
I.e. judge at this whether this message is received by incoming interface A.
It should be noted that after the network equipment receives message, it can be determined that whether this locality configures
Policybased routing, if be configured with, performs step 101, if being configured without, and can according to former
Path forwards, and i.e. determines forward-path according to message prefix.
If described message does not meets the matched rule that described policybased routing forward table includes, then carry out
Step 102.If whether described message meets the matched rule that described policybased routing forward table includes
Carry out step 103.
102, the network equipment forwards described message according to the message prefix of described message.
103, under the network equipment determines according to the forwarding rule that described policybased routing forward table includes
One jumps the network equipment, and is that described message encapsulates MPLS label；Set to described next-hop network
The standby message forwarded after encapsulating MPLS label.
In implementing, outgoing interface information and next hop information according to forwarding rule to include are true
Determine the down hop network equipment, be that described message encapsulates MPLS label according to outgoing label information.
In a preferred embodiment of the invention, the network equipment also need to be pre-configured with forwarding rule with
And matched rule, determine that described forwarding rule is effective.And then, create and include described forwarding
Regular and the described policybased routing forward table of described matched rule.
Wherein, matched rule is that the network equipment generates previously according to the attribute information E-Packeted
, indicate this network equipment only to forward the message of the attribute information met in matched rule.Attribute
Information can be preset length or pre-set priority or default incoming interface.Here preset length is also
Also it is preset length scope, example, message length message between X byte～Y byte.
Specifically, matched rule can be that message length meets described preset length, or message priority
Meet described pre-set priority, or message is received by described default incoming interface.
In implementing, first determine matched rule, the attribute information included further according to matched rule
Determine label information, outgoing interface information and next hop information, according to the outgoing label letter determined
Breath, outgoing interface information and next hop information generate and forward rule.Of course, it is possible to according to difference
The multiple different forwarding rules of attribute information configuration, the different outgoing label forwarding rule to include
Information, outgoing interface information and next hop information are incomplete same.Example, matched rule is
Message length meets described preset length, and the forwarding rule of its correspondence is A.Matched rule is excellent
First level meets described pre-set priority, and the forwarding rule of its correspondence is B.A with B differs.
Certainly, it is different according to the matched rule that different preset length generates, corresponding forwarding rule
Then can be identical, it is also possible to different, in this no limit.
Needing explanation, described effective forwarding rule is effective, i.e. forwards the letter that rule includes
Breath is all effective.Also just says and is, it is necessary to ensure that forwarding rule is effective, and be configured with right
The matched rule answered, just can generate according to the matched rule that this forwarding is regular and corresponding
Policybased routing forward table.
In implementing, after configuration forwards rule, to confirm that this forwarding rule is the most effective, i.e.
Judge whether it outgoing label information included, outgoing interface information and next hop information are effectively
Information.For outgoing interface information, if the outgoing interface of outgoing interface information instruction enables MPLS merit
Can, i.e. this outgoing interface supports MPLS function, then illustrate that this outgoing interface information is effective.Right
In next hop information, if the routing table of network equipments configuration exists the road of next hop information instruction
By, then illustrate that this next hop information is effective.
It addition, in order to improve forward efficiency, it is to avoid route processing meaningless in forwarding process, only
Have and be configured with forwarding rule and the matched rule of its correspondence simultaneously, just can forward road by construction strategy
By table.
If forwarding rule effectively, but it is not the matched rule forwarding rule configuration corresponding, then
Be unsatisfactory for the condition of construction strategy route forwarding table, so will not construction strategy route forwarding table,
But need to preserve in this locality to forward outgoing interface information, the effectiveness of next hop information in rule.After
Continue for forwarding the good corresponding matched rule of rule configuration, then can be according to this forwarding rule and coupling
Rule creation policybased routing forward table.
In a preferred embodiment of the invention, network equipments configuration forwards rule and matched rule
Afterwards, before construction strategy route forwarding table, when the MPLS function of the outgoing interface of the network equipment
Change or the route of the network equipment changes, then need to confirm to forward according to situation of change
Rule is the most effective.
Example, with reference to Fig. 3, in response to the MPLS changes of function event of outgoing interface, network
Equipment needs to confirm to forward rule the most effective, and the embodiment of the present invention also provides for one and confirms to forward
The method of rule, comprises the following steps:
201, the network equipment monitors the MPLS function of outgoing interface and changes.
It can be that outgoing interface is from enabling MPLS that the MPLS function of outgoing interface here changes
Function becomes closing MPLS function, or becomes enabling MPLS from closing MPLS function
Function.Wherein, enable MPLS function this outgoing interface i.e. and support MPLS function, close MPLS
Function i.e. this outgoing interface no longer supports MPLS function.
In implementing, when the monitoring module monitors of the network equipment is to outgoing interface MPLS function
Configuration changes, then send out the change of interface MPLS functional configuration to policybased routing module and disappear
Breath, this message includes outgoing interface information and configuration variation information, further, configuration variation
Information includes that outgoing interface enables MPLS function or interface closes MPLS function.
202, to judge to forward the outgoing interface information that includes of rule whether to indicate described for the network equipment
Outgoing interface.
The described herein rule that forwards is the forwarding that the network equipment configures in above-mentioned steps 101
Rule.It is to say, the network equipment need to judge outgoing interface that MPLS function changes with
The outgoing interface that the outgoing interface information forwarding rule to include indicates is the most identical.
If the outgoing interface information that described forwarding rule includes indicates described outgoing interface, then walk
Rapid 203；If the outgoing interface information that described forwarding rule includes does not indicates described outgoing interface, i.e.
The outgoing interface that MPLS function changes and the outgoing interface information instruction forwarding rule to include
Outgoing interface differs, then carry out step 204.
203, judge that the described next-hop network equipment forwarding rule to indicate is the most effective.
Wherein, the down hop that the next-hop network equipment of rule instruction i.e. forwards rule to include is forwarded
The network equipment of information instruction.
In implementing, i.e. judge whether the routing table that the network equipment is locally stored exists and institute
State the route that the next-hop network equipment forwarding rule to indicate is identical.If existing, it is determined that described
The next-hop network equipment forwarding rule instruction is effective, otherwise, it is determined that described forwarding is advised
The next-hop network equipment then indicated is invalid.
If the described network equipment judges that the described next-hop network equipment forwarding rule to indicate is effective
And described outgoing interface supports MPLS function, then carry out step 205；If described forwarding rule refers to
The next-hop network equipment shown is effective but described outgoing interface does not support MPLS function, carries out step
206。
In implementing, can determine whether this outgoing interface props up according to MPLS configuration variation message
Hold MPLS function.
If 204 these outgoing interfaces support MPLS function, then record the effectiveness of this outgoing interface.
If this outgoing interface does not support MPLS function, then record this outgoing interface invalid.
205, determine that described forwarding rule is effective.
And then, the network equipment can perform above-mentioned steps 101, according to described forward rule and
Corresponding matched rule construction strategy route forwarding table.
206, deletion strategy route forwarding table.
If it is to say, in outgoing interface MPLS configuration variation message, indicating this outgoing interface to close
MPLS function.If by rule creation in the coupling regular and corresponding according to this forwarding
Policybased routing forward table, then delete described policybased routing forward table.
In implementing, the network equipment is performed a plurality of times step 101 can configure multiple matched rule
Rule is forwarded with multiple.Here, the network equipment needs to travel through each forwards rule, search each
Forward the outgoing interface information that rule includes, it is judged that the outgoing interface of this forwarding rule instruction and outgoing interface
Outgoing interface indicated by MPLS configuration variation message is the most identical.So, it may be determined that go out
Multiple targets forward rule, and (i.e. the outgoing interface of this forwarding rule instruction configures with outgoing interface MPLS
Outgoing interface indicated by change message is identical), forward rule to be required for holding for each target
Row step 201-206.
Example, with reference to Fig. 4, in response to the route change events of the network equipment, the network equipment
Needing to confirm to forward rule the most effective, the embodiment of the present invention also provides for one and confirms to forward rule
Method, comprise the following steps:
301, the network equipment monitors route and changes.
Here the route of the network equipment changes can be that the down hop of the network equipment becomes
Change.
In implementing, when the monitoring module monitors of the network equipment changes to equipment route,
Then sending route change message to policybased routing module, this message includes the down hop after change
Information.
302, the network equipment judges whether the next hop information forwarding rule to include indicates route
The next-hop network equipment that situation of change is corresponding.
The described herein rule that forwards is the forwarding that the network equipment configures in above-mentioned steps 101
Rule.The next-hop network equipment that route situation of change is corresponding, in the most above-mentioned route change message
The network equipment including the next hop information instruction after change.It is to say, the network equipment needs
Under judgement equipment route the next-hop network equipment after changing and forwards rule to include
The network equipment of one hop-information instruction is the most identical.
If corresponding next of next hop information that forwarding rule includes instruction route situation of change
Jump the network equipment, then carry out step 303；If the next hop information that forwarding rule includes does not refers to
Show route next-hop network equipment corresponding to situation of change, after i.e. equipment route changes under
The next-hop network that the one jumping network equipment and the next hop information forwarding rule to include indicate sets
For differing, then carry out ignoring this route change events, strategy route forwarding table is not carried out
Amendment or renewal.
303, judge that the described outgoing interface forwarding rule to indicate is the most effective.
Wherein, the outgoing interface information instruction that the outgoing interface of rule instruction i.e. forwards rule to include is forwarded
Outgoing interface.
In implementing, i.e. judge that the outgoing interface of the outgoing interface information instruction forwarding rule to include is
Enable MPLS function and still close MPLS function.If enabling MPLS function, it is determined that
The outgoing interface that the outgoing interface information forwarding rule to include indicates is effective, if closing MPLS merit
Can, it is determined that the outgoing interface that the outgoing interface information forwarding rule to include indicates is invalid.
If the described network equipment judges that the described outgoing interface forwarding rule instruction is effective and described road
Added route by situation of change instruction, then carry out step 305；If rule is forwarded to indicate described
Outgoing interface is effective but route is deleted in the instruction of described route situation of change, carries out step 306.
In implementing, can determine according to above-mentioned route change message that being to increase route still deletes
Except route.
If judging, the described outgoing interface forwarding rule to indicate is invalid, then carry out step 304.
If route is added in 304 described route situation of change instructions, then record this forwarding rule bag
The effectiveness of the next hop information included.
It is to say, when the next-hop network equipment and the route situation of change pair that forward rule instruction
The next-hop network equipment answered is identical, though what the outgoing interface information that this forwarding rule includes indicated
Outgoing interface is invalid, but still can record the effectiveness of this next hop information, in order to follow-up should
After the outgoing interface that the outgoing interface information forwarding rule to include indicates enables MPLS function, Ke Yigen
According to the matched rule generation strategy route forwarding table that this forwarding is regular and corresponding.
305, determine that described forwarding rule is effective.
And then, the network equipment can perform above-mentioned steps 101, according to described forward rule and
Corresponding matched rule construction strategy route forwarding table.
306, deletion strategy route forwarding table.
If it is to say, in above-mentioned route change message, route is deleted in instruction.If by root
The policybased routing forward table according to rule creation in the coupling that this forwarding is regular and corresponding, then need
Delete described policybased routing forward table.
In implementing, the network equipment is performed a plurality of times step 101 can configure multiple matched rule
Rule is forwarded with multiple.Here, the network equipment needs to travel through each forwards rule, search each
Forward the next hop information that rule includes, it is judged that the next-hop network equipment of this forwarding rule instruction
The most identical with the next-hop network equipment that route change message includes.So, can be true
Make multiple target and forward rule (i.e. the next-hop network equipment of this forwarding rule instruction and route
Next-hop network equipment included by change message is identical), rule is forwarded for each target
It is required for performing step 301-306.
The message forwarding method of support static state LSP that the embodiment of the present invention provides and the network equipment,
Being pre-created matched rule and forward rule, the message received meets matched rule just according to turning
Send out rule to E-Packet.Wherein, rule is forwarded to include outgoing label, outgoing interface and next-hop device
Information.It is to say, the information of dependence outgoing label, outgoing interface and next-hop device can be real
Existing message forwards, and so, it is to avoid E-Packet according to message prefix, solves the static LSP of use
E-Packet the shortcoming needed for the static LSP of each prefix configuration, alleviates the network equipment
Static LSP configuration load.Meanwhile, the network equipment need not safeguard that MPLS dynamic routing is assisted
View, still supports static LSP.
Embodiment 2:
The embodiment of the present invention provides a kind of network equipment, as it is shown in figure 5, described core node bag
Include: receive unit 401, judging unit 402, determine unit 403, encapsulation unit 404 with
And transmitting element 405.
Receive unit 401, be used for receiving message.
Judging unit 402, is used for judging whether described message meets policybased routing forward table and include
Matched rule；Described policybased routing forward table includes described matched rule and mates with described
The forwarding rule that rule is corresponding, described forwarding rule includes that outgoing label information, outgoing interface are believed
Breath and next hop information.
Determine unit 403, if it is described to determine that described message meets for described judging unit 402
Matched rule, then determine next-hop network equipment according to described forwarding rule.
Encapsulation unit 404, for encapsulating MPLS label for described message.
Transmitting element 405, for encapsulating MPLS label to described next-hop network device forwards
After message.
As shown in Figure 6, the described network equipment also includes: dispensing unit 406 and creating unit
407。
Described dispensing unit 406 is used for, and before described reception unit receives message, configures institute
State and forward regular and described matched rule；
Described determine that unit 403 is additionally operable to, determine that described forwarding rule is effective；
Described creating unit 407 is used for, and creates and includes that described forwarding is regular and described matched rule
Described policybased routing forward table.
Described dispensing unit 406 specifically for, determine the attribute information E-Packeted, according to institute
Stating attribute information and generate matching strategy, described matching strategy indicates the described network equipment only to forward symbol
Close the message of described attribute information；Described attribute information include preset length or pre-set priority or
Preset incoming interface；According to described attribute information determine label information, outgoing interface information and under
One hop-information；Generate according to the outgoing label information determined, outgoing interface information and next hop information
Described forwarding rule.
If the MPLS functional configuration of the outgoing interface of the described network equipment changes, described judgement
Unit 402 is additionally operable to, and forwards rule and matched rule in the configuration of described dispensing unit 406
Afterwards, whether the outgoing interface information forwarding rule to include indicates described outgoing interface.
If the outgoing interface information that described forwarding rule includes indicates described outgoing interface, then judge institute
State the next-hop network equipment forwarding rule to indicate the most effective.
If judging, the described next-hop network equipment forwarding rule instruction is effective and described outgoing interface
Support MPLS function, it is determined that described forwarding rule is effective.
As it is shown in fig. 7, the described network equipment also includes deleting unit 408.
If the described next-hop network equipment forwarding rule instruction is effective but described outgoing interface does not props up
Holding MPLS function, the most described deletion unit 408 is used for, and creates in described creating unit 407
Build the tactful road including effectively forwarding regular and described effective matched rule forwarding rule correspondence
After forward table, delete described policybased routing forward table.
If the route of the described network equipment changes, described judging unit 402 is additionally operable to,
After the configuration of described dispensing unit 406 forwards rule and matched rule, it is judged that described forwarding is advised
The next-hop network whether next hop information then included indicates route situation of change corresponding sets
Standby.
If the next hop information that described forwarding rule includes indicates described route situation of change pair
The next-hop network equipment answered, then judge that the outgoing interface in described forwarding rule is the most effective.
If the outgoing interface in described forwarding rule is effective and the instruction of described route situation of change is added
Route, it is determined that described forwarding rule is effective.
Forward the outgoing interface of rule instruction effectively if described, but the instruction of described route situation of change is deleted
Except route, described deletion unit 408 is used for, and creates in described creating unit 407 and includes
Effect forwards the policybased routing forward table of regular and described effective matched rule forwarding rule correspondence
Afterwards, described policybased routing forward table is deleted.
The inherent shortcoming that static LSP exists: each message prefix is required for configuration static state
LSP so that it is be only applicable to message prefix number less and E-Packet what prefix was basically unchanged
Network, or use static LSP just for some prefix.Due to these defects, use static state
LSP builds MPLS network and exists for bigger use and limit, and operator has to use cost
Higher dynamic LSP builds MPLS network.
The network equipment that the present invention provides can be greatly simplified builds joining of static MPLS network
Put so that it is be suitable for increasingly complex, route change network the most frequently, and, except static state
The mode determining MPLS forward-path according to message prefix that LSP is intrinsic, it is also possible to according to entering
Interface, priority determine MPLS forward-path, can increase the application of static LSP network
Scope.
Through the above description of the embodiments, those skilled in the art can be clearly
Solution arrives, and for convenience and simplicity of description, only carries out illustrating with the division of above-mentioned each functional module
Bright, in actual application, can as desired above-mentioned functions be distributed by different functional modules
Complete, the internal structure of device will be divided into different functional modules, to complete above description
All or part of function.The specific works process of the device of foregoing description, before being referred to
State the corresponding process in embodiment of the method, do not repeat them here.
The described unit that illustrates as separating component can be or may not be and physically divide
Opening, the parts shown as unit can be a physical location or multiple physical location, i.e.
May be located at a place, or can also be distributed to multiple different local.Can be according to reality
Need select some or all of unit therein to realize the purpose of the present embodiment scheme.Separately
Outward, each functional unit in each embodiment of the present invention can be integrated in a processing unit
In, it is also possible to it is that unit is individually physically present, it is also possible to two or more unit collection
Become in a unit.Above-mentioned integrated unit both can realize to use the form of hardware, it is possible to
To use the form of SFU software functional unit to realize.
If described integrated unit realizes and as independent using the form of SFU software functional unit
When production marketing or use, can be stored in a read/write memory medium.Based on such
Understand, part that prior art is contributed by technical scheme the most in other words or
Completely or partially can embodying with the form of software product of this technical scheme of person, this software
Product is stored in a storage medium, including some instructions with so that an equipment is (permissible
It is single-chip microcomputer, chip etc.) or processor (processor) execution each embodiment of the present invention
All or part of step of described method.And aforesaid storage medium includes: USB flash disk, mobile hard
Dish, read only memory (ROM, Read-Only Memory), random access memory (RAM,
Random Access Memory), disk or CD etc. are various can store program code
Medium.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is also
Being not limited to this, any those familiar with the art is at the technology model that the invention discloses
In enclosing, change can be readily occurred in or replace, all should contain within protection scope of the present invention.
Therefore, protection scope of the present invention should described be as the criterion with scope of the claims.
Claims (10)
1. a message forwarding method, it is characterised in that including:
The network equipment receives message, it is judged that whether described message meets what policybased routing forward table included
Matched rule；Described policybased routing forward table include described matched rule and with described matched rule
A corresponding forwarding rule, described forwarding rule include outgoing label information, outgoing interface information and
Next hop information；
If described message meets described matched rule, the described network equipment then forwards rule according to described
Determine next-hop network equipment, and be that described message encapsulates multi-protocol exchange MPLS label；
Described network equipment report after described next-hop network device forwards encapsulation MPLS label
Literary composition.
Method the most according to claim 1, it is characterised in that the described network equipment receives
Before message, described method also includes:
Forward regular and described matched rule described in network equipments configuration, determine described forwarding rule
It is effective；
The described network equipment creates and includes that described forwarding is regular and the described strategy of described matched rule
Route forwarding table.
Method the most according to claim 2, it is characterised in that described network equipments configuration
Rule and matched rule is forwarded to specifically include:
The described network equipment determines the attribute information E-Packeted, according to the generation of described attribute information
Joining strategy, described matching strategy indicates the described network equipment only to forward the report meeting described attribute information
Literary composition；Described attribute information includes preset length or pre-set priority or default incoming interface；
The described network equipment according to described attribute information determine label information, outgoing interface information and
Next hop information；
The described network equipment is according to the outgoing label information determined, outgoing interface information and next hop information
Generate described forwarding rule.
Method the most according to claim 2, it is characterised in that if the described network equipment
The MPLS functional configuration of outgoing interface changes, described network equipments configuration forward rule and
After matched rule, described method also includes:
The described network equipment judges whether the outgoing interface information that described forwarding rule includes indicates institute
State outgoing interface；
If the outgoing interface information that described forwarding rule includes indicates described outgoing interface, then judge described
The next-hop network equipment forwarding rule instruction is the most effective；
If the described network equipment judge the described next-hop network equipment forwarding rule instruction effectively and
Described outgoing interface supports MPLS function, it is determined that described forwarding rule is effective.
Method the most according to claim 2, it is characterised in that if the described network equipment
Route changes, after described network equipments configuration forwards rule and matched rule, and described side
Method also includes:
Judge whether the next hop information that described forwarding rule includes indicates route situation of change pair
The next-hop network equipment answered；
If the next hop information that described forwarding rule includes indicates described route situation of change corresponding
Next-hop network equipment, then judge described forward rule instruction outgoing interface the most effective；
If the described outgoing interface forwarding rule instruction is effective and the instruction of described route situation of change is added
Route, it is determined that described forwarding rule is effective.
6. a network equipment, it is characterised in that including:
Receive unit, be used for receiving message；
Judging unit, for judging whether described message meets the coupling that policybased routing forward table includes
Rule；Described policybased routing forward table includes described matched rule and corresponding with described matched rule
One forwarding rule, described forwarding rule include outgoing label information, outgoing interface information and next
Hop-information；
Determine unit, if judging that described message meets described matched rule for described judging unit,
Then determine next-hop network equipment according to described forwarding rule；
Encapsulation unit, for encapsulating multi-protocol exchange MPLS label for described message；
Transmitting element, for after described next-hop network device forwards encapsulation MPLS label
Message.
The network equipment the most according to claim 6, it is characterised in that also include that configuration is single
Unit, creating unit,
Described dispensing unit, before receiving message at described reception unit, configures described forwarding
Regular and described matched rule；
Described determine that unit is additionally operable to, determine that described forwarding rule is effective；
Described creating unit is used for, and creates and includes that described forwarding is regular and described matched rule described
Policybased routing forward table.
The network equipment the most according to claim 7, it is characterised in that described dispensing unit
Specifically for, determine the attribute information E-Packeted, generate matching strategy according to described attribute information,
Described matching strategy indicates the described network equipment only to forward the message meeting described attribute information；Described
Attribute information includes preset length or pre-set priority or default incoming interface；
Label information, outgoing interface information and next hop information is determined according to described attribute information；
Described forwarding is generated according to the outgoing label information determined, outgoing interface information and next hop information
Rule.
The network equipment the most according to claim 7, it is characterised in that if described network sets
The MPLS functional configuration of standby outgoing interface changes, and described judging unit is additionally operable to, in institute
After stating dispensing unit configuration forwarding rule and matched rule, forward the outgoing interface that rule includes
Whether information indicates described outgoing interface；
If the outgoing interface information that described forwarding rule includes indicates described outgoing interface, then judge described
The next-hop network equipment forwarding rule instruction is the most effective；
If judging, the described next-hop network equipment forwarding rule instruction is effective and described outgoing interface props up
Hold MPLS function, it is determined that described forwarding rule is effective.
The network equipment the most according to claim 7, it is characterised in that if described network
The route of equipment changes, and described judging unit is additionally operable to, and forwards in the configuration of described dispensing unit
After rule and matched rule, it is judged that whether the next hop information that described forwarding rule includes refers to
Show the next-hop network equipment that route situation of change is corresponding；
If the next hop information that described forwarding rule includes indicates described route situation of change corresponding
Next-hop network equipment, then judge that the outgoing interface in described forwarding rule is the most effective；
If the outgoing interface in described forwarding rule is effective and road is added in the instruction of described route situation of change
By, it is determined that described forwarding rule is effective.
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| WO2020088683A1 (en) * | 2018-11-02 | 2020-05-07 | 华为技术有限公司 | Method for processing routing event record entry, network device and control device |
| CN111628930A (en) * | 2020-05-25 | 2020-09-04 | 河南群智信息技术有限公司 | Label-based Chinese medicinal material planting monitoring information rerouting method |
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| CN114978993A (en) * | 2022-04-24 | 2022-08-30 | 欧冶云商股份有限公司 | Message routing method based on label expression calculation and electronic equipment |
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