CN105591908B - A kind of route issuing method and device - Google Patents
A kind of route issuing method and device Download PDFInfo
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- CN105591908B CN105591908B CN201510591115.7A CN201510591115A CN105591908B CN 105591908 B CN105591908 B CN 105591908B CN 201510591115 A CN201510591115 A CN 201510591115A CN 105591908 B CN105591908 B CN 105591908B
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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
- H04L45/14—Routing performance; Theoretical aspects
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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
- H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
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Abstract
This application provides a kind of route issuing methods, this method comprises: routing device is directed to the routing that need to be distributed to other routing devices, configure routing policy, the routing policy includes: that matching condition is first state, movement is that the default cost cost value of the routing is increased preset value, when issuing the routing, if the state that this routing device accesses network is currently first state, then determination is matched with the routing policy, the routing policy is executed, the default cost value of the routing is increased into preset value as the cost value for issuing the routing.Based on same inventive concept, the application also proposes a kind of routing distributing device, can guarantee the normal transmission of flow.
Description
Technical field
The present invention relates to field of communication technology, in particular to a kind of route issuing method and device.
Background technique
In the application of existing net, in order to improve network reliability, Virtual Router Redundancy Protocol (Virtual is usually used
Router Redundancy Protocol, VRRP) backup group is as user, including the access such as ordinary user, base station network
Gateway.The uplink traffic of user-to-network will pass through VRRP host apparatus, but network to user downlink traffic path lead to
It is often dependant on the routing result of dynamic routing protocol.This may cause different by the uplink and downlink flow path of VRRP backup group
It causes.
When needing that firewall is arranged to improve safety on VRRP backup group, uplink and downlink path is inconsistent to will lead to stream
Amount is prevented by firewall；In addition, such case also will increase the difficulty and cost of the management works such as traffic monitoring, traffic statistics.
In order to realize load balancing, equative route can be configured in now net application, but when an equative route failure, far
End equipment is not aware that the path failure, and also corresponding flow can be introduced on the path, will result in the loss of flow.
Therefore it cannot be guaranteed flow for the flow of backup path and equative route flow in existing realization
It is normal to send.
Summary of the invention
In view of this, the application provides a kind of route issuing method and device, asked with solve that flow cannot normally send
Topic.
In order to solve the above technical problems, the technical solution of the application is achieved in that
A kind of route issuing method, this method comprises:
Routing device is directed to the routing that need to be distributed to other routing devices, configures routing policy, and the routing policy includes:
Matching condition is first state, is acted as the default cost cost value of the routing is increased preset value, the preset value is greater than 0
Integer；
When issuing the routing, if this routing device access network state be currently first state, it is determined that with it is described
Routing policy matching, executes the routing policy, and the default cost value of the routing is increased preset value as the publication routing
Cost value；
If it is determined that the state of this routing device access network is currently the second state, then the default cost value of the routing is made
For the cost value for issuing the routing.
A kind of routing distributing device is applied on routing device, which includes: configuration unit and processing unit；
The configuration unit, for configuring routing policy, the routing for the routing that need to be distributed to other routing devices
Strategy includes: that matching condition is first state, is acted as the default cost cost value of the routing is increased preset value, described default
Value is the integer greater than 0；
The processing unit is used for when issuing the routing, if the state of this routing device access network is currently first
State, it is determined that matched with the routing policy of the configuration of described dispensing unit, execute the routing policy, by the default of the routing
Cost value increases preset value as the cost value for issuing the routing；If it is determined that the state of this routing device access network is currently the
Two-state, then using the default cost value of the routing as the cost value for issuing the routing.
As can be seen from the above technical solution, in the application when issuing routing, the state of network is accessed according to routing device
The cost value for issuing the routing is determined, so that the routing device for receiving the routing calculates reasonable road according to the cost value
Diameter, so as to guarantee the normal transmission of flow.
Detailed description of the invention
Fig. 1 is routing publication flow diagram in the embodiment of the present application；
Fig. 2 be the embodiment of the present application in routing, strategy and state between incidence relation schematic diagram；
Fig. 3 is to pass through TRACK associated external event schematic diagram in the embodiment of the present application；
Fig. 4 is VRRP networking schematic diagram in the embodiment of the present application；
Fig. 5 is BFD networking schematic diagram in the embodiment of the present application；
Fig. 6 is the apparatus structure schematic diagram for being applied to above-mentioned technology in the embodiment of the present application.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and examples,
Technical solution of the present invention is described in detail.
A kind of route issuing method is provided in the embodiment of the present application, when issuing routing, network is accessed according to routing device
State determine cost (cost) value for issuing the routing, calculated so as to receive the routing device of the routing according to the cost value
Reasonable path out, so as to guarantee the normal transmission of flow.
With reference to the accompanying drawing, it is described in detail in the embodiment of the present application and routes issuing process.
It is routing publication flow diagram in the embodiment of the present application referring to Fig. 1, Fig. 1.Specific steps are as follows:
Step 101, routing device is directed to the routing that need to be distributed to other routing devices, configures routing policy, the routing
Strategy includes: that matching condition is first state, is acted as the default cost value of the routing is increased preset value.
The preset value is the integer greater than 0；In specific implementation, after default cost value being increased preset value, it is no more than tool
Corresponding maximum cost value is routed in body agreement.
Such as Intermediate System-to-Intermediate System (Intermediate System-to-Intermediate System, IS-
IS) in agreement, cost maximum value is 16777214；When the path cost Value Types that ISIS is specified are narrow, narrow-
When compatible or compatible, maximum value 63；When specified path cost Value Types are wide or wide-
When compatible, value range 16777215.
Cost maximum value is in agreement that Open Shortest Path First (Open Shortest Path First, OSPF)
16777215。
Step 102, the routing device is when issuing the routing, if the state of this routing device access network is currently first
State, it is determined that matched with the routing policy, execute the routing policy, the default cost value of the routing is increased into preset value
As the cost value for issuing the routing.
The routing device is when issuing the routing, however, it is determined that the state that this routing device accesses network is currently the second shape
State, then using the default cost value of the routing as the cost value for issuing the routing.
Wherein, the state of routing device access network is summarised as first state and the second state, in concrete application scene
First state and the second state can be assigned according to practical application with real state.If in some application scenarios including three kinds
When the above state, one of three kinds or more states state is first state, other states in three kinds or more states are referred to as
Second state.
In specific application environment, the state that routing device accesses network can be the state of routing device, role；It can also
Think the state (up or down) of port；It can also be for the presence or absence of the routing etc. to specified destination address.
When such as the routing device is VRRP equipment, the state which accesses network is VRRP Status of Backups and VRRP
Major state, wherein first state is VRRP Status of Backups, and the second state is VRRP major state.
There is the routing to specified destination address in such as routing device, then the state of routing access network is the first shape
State；There is no the routing to specified destination address in the routing device, then the state of routing access network is the second state.
Here no longer illustrate one by one, in specific implementation, the first state is, it is desirable to reach the flow of the routing without
Where crossing this routing device when path, which accesses the state of network；It is also possible to the equipment as Status of Backups, no
Participate in the forwarding of network uplink and downlink traffic.
Above scheme realize when, the cost value due to issuing the routing becomes larger, remote equipment for the routing into
When row router-level topology, will preferentially it calculate on the small path of cost value, it is big without being switched to publication routing cost value
On path where routing device.
Referring to fig. 2, Fig. 2 be the embodiment of the present application in routing, strategy and state between incidence relation schematic diagram.In Fig. 2
The attribute (cost value) of routing reference routing policy change routing publication, introduces routing device access network in routing policy
State is arranged routing property；When the state of routing device access network is first state, the execution of routing policy is triggered, more
Send the attribute of cloth routing elsewhere；By routing policy, realization routing is associated with the state of routing device access network.
When the application implements, the generation of some external events can trigger the variation of routing device access network state.
No matter how the state of routing device access network changes, and when needing to issue routing, accesses net according to this current routing device
The state of network determines the cost value of routing publication.
When the external event that the routing device determination need to switch the state of this routing device access network occurs, according to outer
Portion's event switches the state of routing device access network.
It is in the embodiment of the present application by linkage (TRACK) associated external event schematic diagram referring to Fig. 3, Fig. 3.It, can in Fig. 3
To quote TRACK by routing policy, it is accomplished that tracking, linkage function.Road is arranged by the same response external event of TRACK
By the routing property in strategy.The state and routing plan of the routing device access network that each external event influences are configured in TRACK
Mapping relations slightly；The state of one routing device access network can correspond to a routing policy, can also correspond to multiple roads
By strategy；It can be matched with the corresponding routing policy of state that multiple equipment accesses network, when specific implementation according to practical application
Set, the embodiment of the present application to this with no restriction.
Routing device caused by a variety of external events can be accessed cutting for the state of network by the example that the schematic diagram provides
It changes and same is mapped to corresponding routing policy by TRACK.
Occur in any external event, after carrying out state switching, passes through the corresponding mapping relations of TRACK, it is determined whether deposit
In corresponding routing policy, if traversing each routing policy in corresponding routing policy；It is true again for each routing policy
Surely it whether there is corresponding routing, if it does, traversing each routing, in the corresponding routing of publication, execute relative strategy, modification hair
The cost value of cloth routing.
Below with reference to specific networking, routing issuing process is described in detail.
Embodiment one
By taking VRRP networking as an example, for the routing device as VRRP equipment, the first state is VRRP for state, that is, is wished
When VRRP is for state, when remote equipment calculates routing, flow is not introduced to path where the routing device；Second state is
VRRP major state.
When it is main that external event, which is VRRP equipment by standby switching, which accesses the state of network by first state
It is switched to the second state；
When external event is that VRRP equipment is switched to standby by master, which accesses the state of network by the second state
It is switched to first state.
Referring to fig. 4, Fig. 4 is VRRP networking schematic diagram in the embodiment of the present application.Routing device 1 and 2 groups of routing device in Fig. 4
At VRRP backup group, the VRRP state of routing device 1 is main state, and the VRRP state of routing device 2 is Status of Backups, user network
The IP network section of network is 10.1.1.0/.24.
It is so that the routing of other routing devices (equipment in routing device 3, routing device 4 and core network) need to be distributed to
10.1.1.0/.24 for, then routing device 1 and routing device 2 are directed to the routing configuration routing policy respectively.Routing policy packet
Include: matching condition first state (routing device accesses the state of network, i.e. VRRP state is Status of Backups) acts as by the road
Preset value is increased by corresponding cost value, preset value here is configured to 1.
For routing device 1, when original state, routing device 1 accesses the state of network, i.e. VRRP state is main state,
It is mismatched with corresponding routing policy, then when publication routes 10.1.1.0/.24, issues the routing using default cost value (0).
When external event occurs, i.e., routing device 1 is switched to standby equipment by main equipment, routing device 1 accesses network
State is switched to first state (VRRP Status of Backups), matches with corresponding routing policy, then routes 10.1.1.0/ in publication
When .24, the routing policy is executed, by the default cost value (0) of the routing plus 1, issues the routing using cost value (1).
For routing device 2, when original state, the state that routing device 2 accesses network is that (VRRP is for shape for first state
State), it is matched with corresponding routing policy, then when publication routes 10.1.1.0/.24, the routing policy is executed, by the routing
Default cost value (0) plus 1, issue the routing using cost value (1).
When external event occurs, and routing device 2 is switched to main equipment by standby equipment, routing device 2 accesses the shape of network
State is the second state (VRRP major state), is mismatched with corresponding routing policy, then when publication routes 10.1.1.0/.24, uses
Default cost value (0) issues the routing.
Assuming that when running ospf protocol between routing device 1, routing device 2, routing device 3 and routing device 4, publication
When routing, LSA publication is generated, the routing in the LSA is 10.1.1.0/.24, and the corresponding cost value for issuing the routing is according to working as
Whether the state of preceding routing device access network matches determination with routing policy.
By above-mentioned technical proposal provided by the present application, when VRRP issues same routing for equipment and VRRP main equipment,
VRRP increases the value of corresponding cost value for equipment, in this way when core equipment in network carries out router-level topology, calculates
When the routing of 10.l.1.0/24, the preferably small routing of cost value.
When routing device 1 is VRRP main equipment, to the routing of 10.1.1.0/24, next-hop is Router3；Work as routing
When equipment 2 is VRRP main equipment, to the routing of 10.1.1.0/24, next-hop is Router4.
Thereby it is ensured that the upper every trade flow path between user network and core network is consistent, flow not will lead to
Loss.
Embodiment two
The routing device is to run two-way converting detection (Bidirectional Forwarding Detection, BFD)
When for agreement, the first state is when determining the path failure for arriving the routing by BFD detection, which accesses net
The state of network；Second state is to be detected by BFD, and when determining normal to the path of the routing, which accesses net
The state of network；
When external event is to be detected by BFD, determines the path failure for arriving the routing, which accesses network
State first state is switched to by the second state；
When external event is to be detected by BFD, determines that the path failure to the routing restores, routing device access
The state of network is switched to the second state by first state.
It is BFD networking schematic diagram in the embodiment of the present application referring to Fig. 5, Fig. 5.Routing device 1 arrives routing device 2 in Fig. 5, with
It is equative route between routing device 4 that routing device 1, which arrives,.Routing device 1 arrives routing device 2, and routing device 1 arrives routing device 4
Between establish BFD.
It is directed on routing device 2 and routing device 4 and needs to be distributed to routing device 3, routing device 5 and routing device 6
Routing policy is respectively configured in routing (the network segment routing on routing device 1).The routing policy includes: that matching condition is the first shape
State；The cost value of the routing is is increased preset value by movement, and such as 2.
For routing device 2, when original state, the path of routing device 2 to routing device 1 is normal, then is issuing the road
By when, routing device 2 access network state be the second state, i.e., with routing policy mismatch, then use the routing default
Cost value carries out routing publication.
When carrying out BFD detection, the path failure (external event generation) of R2 to R1 is detected, then according to the external event
The state that routing device 2 accesses network is switched to first state by the second state；When issuing routing, routing device 2 is accessed
The state (first state) of network is matched with routing policy, then the default cost value of the routing is increased by 2 as the publication routing
Cost value.
It is similar with the realization of routing device 2 for routing device 4, it no longer describes one by one here.
As the port down of routing device 1 to routing device 2, and routing device 2 arrives the port up of routing device 1, then road
By there are also the network segments to routing device 1 to route in equipment 2, therefore, see from routing device 6 or routing device 2 to road
Still flow may be drawn when carrying out router-level topology by the equivalent route between equipment 1, with routing device 4 to routing device 1
Enter onto the path where routing device 2, will result in the loss of flow；
By technical solution provided by the present application, the cost value for the routing issued on routing device 2 is increased, then carries out road
When by calculating, flow will be guided on routing device 4 rather than on routing device 2, to avoid routing device 2 to routing device
The loss of flow on 1.
The implementation of port failure, it is similar with the realization process of the present embodiment, it is not further described herein.
Embodiment three
For the present embodiment whether there is to for the routing of specified destination address on routing device, routing device accesses network
State determine that the first state is to exist on the routing device according to whether there is the routing to specified destination address
To the routing of specified destination address；Second state is there is no the routing to specified destination address on the routing device.
Such as: when routing device (equipment A) needs to issue default route, needing to meet the item that this equipment has default route
Part, at this point, the definition to the routing of specified destination address is exactly that there are the default routes that destination address is 0.0.0.0/0 for this equipment
When；
When routing device (equipment A) needs to issue default route, needs to meet this equipment and there is routing to B device,
At this point, the definition to the routing of specified destination address is exactly the routing existed on equipment A to equipment B.
When external event is to obtain the routing for arriving specified destination address, which accesses the state of network by second
State is switched to first state；Wherein, the mode of the routing for arriving specified destination address is obtained, can be dynamic learning, configuration
It obtains.
When external event is that the routing to specified destination address that will be present is deleted, which accesses the state of network
Second state is switched to by first state.
For routing (routing 2) to be released on any routing device, routing policy is configured, which includes:
It is first state with condition；Movement is using the default cost value increase preset value of the routing as the cost value of routing publication.
When needing to issue the routing, the state of routing device access network is determined, if existing on the routing device
The routing to specified destination address determines that the state of routing device access network is first state；Otherwise, it determines the road
State by equipment access network is not first state.
When the state for determining routing device access network is first state, is matched with the routing policy, execute institute
Routing policy is stated, the default cost value of the routing is increased into the cost value that preset value is issued as the routing.
When the state for determining routing device access network is the second state, mismatches, then make with the routing policy
Routing publication is carried out with the default cost value of the routing.
Based on same inventive concept, the application also proposes a kind of routing distributing device, is applied on routing device.Referring to
Fig. 6, Fig. 6 are the apparatus structure schematic diagram for being applied to above-mentioned technology in the embodiment of the present application.The device includes: configuration unit 601
With processing unit 602；
Configuration unit 601, for configuring routing policy, the routing for the routing that need to be distributed to other routing devices
Strategy includes: that matching condition is first state, is acted as the default cost cost value of the routing is increased preset value, described default
Value is the integer greater than 0；
Processing unit 602 is used for when issuing the routing, if the state of this routing device access network is currently the first shape
State, it is determined that the routing policy configured with configuration unit 601 matches, and the routing policy is executed, by the default cost of the routing
Value increases preset value as the cost value for issuing the routing；If it is determined that the state of this routing device access network is currently the second shape
State, then using the default cost value of the routing as the cost value for issuing the routing.
Preferably,
Processing unit 602 is further used for that the external event of the state of this routing device access network need to be switched when determination
When generation, switch the state of routing device access network according to external event.
Preferably
Processing unit 602 is specifically used for the routing device as Virtual Router Redundancy Protocol VRRP equipment, when external thing
When part is by being main for switching, the state of routing device access network is switched to the second state by first state；When external thing
Part is when being switched to standby by master, and the state of routing device access network is switched to first state by the second state；Described first
State is VRRP for state；Second state is VRRP major state.
Preferably,
Processing unit 602 is specifically used for routing device operation two-way converting and detects BFD agreement, and external event is to pass through
BFD detection, when determining the path failure for arriving the routing, the state of routing device access network is switched to the by the second state
One state；When external event is to be detected by BFD, determines that the path failure to the routing restores, routing device access
The state of network is switched to the second state by first state；The first state is that the road for arriving the routing is determined by BFD detection
When diameter failure, which accesses the state of network；Second state is to be detected by BFD, determines the road for arriving the routing
When diameter is normal, which accesses the state of network.
Preferably,
Processing unit 602, specifically for being to obtain the routing for arriving specified destination address, the routing device when external event
The state of access network is switched to first state by the second state；When external event is the road to specified destination address that will be present
By deleting, the state of routing device access network is switched to the second state by first state；The first state is the routing
There is the routing to specified destination address in equipment；Second state is that the routing device does not exist to the road of specified destination address
By.
The unit of above-described embodiment can integrate in one, can also be deployed separately；It can be merged into a unit, it can also
To be further split into multiple subelements.
In conclusion the application is by determining that publication should according to the state that routing device accesses network when issuing routing
The cost value of routing, so that the routing device for receiving the routing calculates reasonable path according to the cost value, so as to
Guarantee the normal transmission of flow.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (10)
1. a kind of route issuing method, which is characterized in that this method comprises:
Routing device is directed to the routing that need to be distributed to other routing devices, configures routing policy, and the routing policy includes: matching
Condition is first state, is acted as the default cost cost value of the routing is increased preset value, the preset value is whole greater than 0
Number；
When issuing the routing, if the state of this routing device access network is currently first state, it is determined that with the routing
Strategy matching executes the routing policy, and the default cost value of the routing is increased preset value as the cost for issuing the routing
Value；
If it is determined that the state of this routing device access network is currently the second state, then using the default cost value of the routing as hair
The cost value of the cloth routing.
2. the method according to claim 1, wherein
When the external event that the routing device determination need to switch the state of this routing device access network occurs, according to external thing
Part switches the state of routing device access network.
3. according to the method described in claim 2, it is characterized in that,
For the routing device as Virtual Router Redundancy Protocol VRRP equipment, the first state is VRRP for state；Described
Two-state is VRRP major state；
When it is main that external event, which is by standby switching, the state of routing device access network is switched to the second shape by first state
State；
When external event is to be switched to standby by master, the state of routing device access network is switched to the first shape by the second state
State.
4. according to the method described in claim 2, it is characterized in that,
When the routing device runs two-way converting detection BFD agreement, the first state is to determine to arrive the routing by BFD detection
Path failure when, the routing device access network state；Second state is to be detected by BFD, determines and arrives the routing
Path it is normal when, the routing device access network state；
When external event is to be detected by BFD, determines the path failure for arriving the routing, which accesses the shape of network
State is switched to first state by the second state；
When external event is to be detected by BFD, determines that the path failure to the routing restores, which accesses network
State the second state is switched to by first state.
5. according to the method described in claim 2, it is characterized in that,
The first state is that the routing device has the routing to specified destination address；Second state is the routing device
There is no the routing to specified destination address；
When external event is to obtain the routing for arriving specified destination address, which accesses the state of network by the second state
It is switched to first state；
When external event is that the routing to specified destination address that will be present is deleted, which accesses the state of network by the
One state is switched to the second state.
6. a kind of routing distributing device is applied on routing device, which is characterized in that the device includes: configuration unit and processing
Unit；
The configuration unit, for configuring routing policy, the routing policy for the routing that need to be distributed to other routing devices
Include: matching condition it is first state, acts as the default cost cost value of the routing is increased preset value, the preset value is
Integer greater than 0；
The processing unit is used for when issuing the routing, if the state of this routing device access network is currently first state,
Then determination is matched with the routing policy of the configuration of described dispensing unit, the routing policy is executed, by the default cost value of the routing
Increase preset value as the cost value for issuing the routing；If it is determined that the state of this routing device access network is currently the second shape
State, then using the default cost value of the routing as the cost value for issuing the routing.
7. device according to claim 6, which is characterized in that
The processing unit, the external event for being further used for switch when determination the state of this routing device access network occur
When, switch the state of routing device access network according to external event.
8. device according to claim 7, which is characterized in that
The processing unit is specifically used for the routing device as Virtual Router Redundancy Protocol VRRP equipment, works as external event
When to be main by standby switching, the state of routing device access network is switched to the second state by first state；Work as external event
When to be switched to standby by master, the state of routing device access network is switched to first state by the second state；First shape
State is VRRP for state；Second state is VRRP major state.
9. device according to claim 7, which is characterized in that
The processing unit is specifically used for routing device operation two-way converting and detects BFD agreement, and external event is to pass through BFD
Detection, when determining the path failure for arriving the routing, the state of routing device access network is switched to first by the second state
State；When external event is to be detected by BFD, determines that the path failure to the routing restores, which accesses net
The state of network is switched to the second state by first state；The first state is that the path for arriving the routing is determined by BFD detection
When failure, which accesses the state of network；Second state is to be detected by BFD, determines the path for arriving the routing
When normal, which accesses the state of network.
10. device according to claim 7, which is characterized in that
The processing unit, specifically for being the routing for getting specified destination address, routing device access when external event
The state of network is switched to first state by the second state；When external event is that the routing to specified destination address that will be present is deleted
It removes, the state of routing device access network is switched to the second state by first state；The first state is the routing device
In the presence of the routing to specified destination address；Second state is that the routing device does not have the routing to specified destination address.
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|---|---|---|---|---|
| CN108259343B (en) * | 2017-06-14 | 2020-08-04 | 新华三技术有限公司 | Routing strategy matching method and device |
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