CN110365578A - Network interface control and link switching method, device, network equipment and medium - Google Patents
Network interface control and link switching method, device, network equipment and medium Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
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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
- H04L45/02—Topology update or discovery
- H04L45/04—Interdomain routing, e.g. hierarchical routing
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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
- H04L45/02—Topology update or discovery
- H04L45/08—Learning-based routing, e.g. using neural networks or artificial intelligence
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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
- H04L45/22—Alternate routing
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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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- 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
- H04L45/54—Organization of routing tables
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Abstract
The invention discloses a network interface control and link switching method, a network interface control and link switching device, network equipment and a medium, which are used for reducing packet loss of aggregated network equipment and improving the reliability of data forwarding. The network interface control method comprises the following steps: a three-layer forwarding interface of the aggregation network equipment receives a data message from a two-layer network interface of the aggregation network equipment; if the aggregation network device detects that the next hop route of the data message forwarded by the three-layer forwarding interface is unreachable, searching the two-layer forwarding interface identifier corresponding to the next hop route information from the established corresponding relationship between the route information and the two-layer forwarding interface identifier, and closing the corresponding two-layer forwarding interface according to the searched two-layer forwarding interface identifier.
Description
Technical field
The present invention relates to network communication technology field more particularly to a kind of control of network interface and link switch-over methods, dress
It sets and medium.
Background technique
MPLS (Multi-Protocol Label Switching, multiprotocol label switching) L2VPN (Link 2
Virtual Private Network, two-layer virtual private network) it can be used as access net user be linked into MPLS L3VPN
Or IP backbone.The MPLS L2VPN technology for providing point-to-point connection is supported with the VPLS technology that multi-point connects is provided
L2VPN accesses the function of L3VPN or IP backbone.
L2VPN accesses L3VPN or IP backbone networking mode as shown in Figure 1, MPLS L2VPN and MPLS L3VPN (or IP
Backbone network) junction dispose an equipment, realize MPLS L2VPN termination and MPLS L3VPN access function.As shown in Figure 1,
Connect equipment PE-agg (the PE Aggregation, polymerization VPN access of MPLS L2VPN and MPLS L3VPN (or IP backbone)
Router), it can both be used to the MPLS L2VPN that terminates, can also be used to access MPLS L3VPN or IP backbone.PE-agg
Above-mentioned function is realized by the following method:
VE (Virtual Ethernet, the virtual ether for the MPLS L2VPN message that terminates is created on PE-agg
Net) interface, i.e. VE-L2VPN (abbreviation L2VE) interface.One is created on PE-agg for meeting the VE of message access backbone network
Mouth, i.e. VE-L3VPN (abbreviation L3VE) interface.The IP address of the interface needs to exist with the IP address of CE (Customer Edge router) 1
The same network segment.When MPLS L3VPN is as backbone network, need to bind VPN (Virtual Private on L3VE interface
Network, Virtual Private Network), will pass through VPN route forwarding user's message.In data message transmission, L2VE interface
The original two layer message of reduction is directly handed to the L3VE interface of same-interface number, wherein the L2VE of same-interface number
Just looking like with L3VE interface is connected directly by physical circuit.There are the feelings of multiple vlan sub-interfaces for the CE of L2VPN access
Corresponding L2VE sub-interface is arranged on VE mouthfuls in condition, and L3VE sub-interface, the interface index of L2VE and the interface index of L3VE are consistent,
L3VE mouthfuls of corresponding VPN can finally be entered and carry out forwarding of tabling look-up.
As shown in Fig. 2, it is under active and standby scene, L2VPN accesses networking schematic diagram when L3VPN or backbone network.NE41
It is separately connected NE31 and NE32, is the side L2 of L2VPN access L3VPN networking, by virtual between NE41 and NE31 and NE32
Special line (PW) connection, wherein based on NE31, NE32 be it is standby, NE31 and NE32 are PE-AGG, be each equipped with L2VE interface and
It is relevant that L3VE interface, L3VE interface binding VPN (Virtual Private Network), NE31 and NE32 establish L3VPN with NE11 respectively
Neighborhood, subsequent NE31 and NE32 look into VPN route forwarding table and are forwarded message to NE11.
L3VPN networking is accessed for L2VPN shown in Fig. 2, if link failure occurs for L5+L9, according to the prior art,
The side L3VPN of NE31 can perceive failure, but since the side of NE41 access is L2VPN, can not perceive link event
Barrier, therefore, the L2VPN of NE41 thinks that NE31 is still available, and such message still can be forwarded to NE31, and NE31
The side L3VPN causes message to be dropped since failure can not forward the message to NE11, reduces the reliable of data message forwarding
Property.
Summary of the invention
The embodiment of the present invention provides a kind of control of network interface and link switch-over method, device, the network equipment and medium, uses
To reduce converging network equipment packet loss, the reliability of data forwarding is improved.
In a first aspect, providing a kind of network interface control method, comprising:
Double layer network interface datagram of the three layers of forwarding interface of converging network equipment from the converging network equipment
Text；
If the converging network equipment detects that the three-layer network interface forwards the next-hop road of the data message
By unreachable, then in the corresponding relationship between routing iinformation and two layers of forwarding interface mark, next-hop routing iinformation pair is searched
The two layers of forwarding interface mark answered；
The converging network equipment is identified according to the two layers of forwarding interface found, closes the two layers of forwarding interface found
Mark.
In a kind of possible embodiment, the corresponding relationship between the routing iinformation and two layers of forwarding interface mark is
It obtains in accordance with the following methods:
Obtain the corresponding forwarding table of three layers of forwarding interface, include three layers of forwarding interface mark in the forwarding table with
The corresponding relationship of next-hop routing iinformation；
Corresponding two layers of forwarding interface mark is identified according to preconfigured three layers of forwarding interface, establishes next-hop road
Corresponding relationship between corresponding two layers of forwarding interface mark is identified by information and three layers of forwarding interface.
In a kind of possible embodiment, network interface control method provided in an embodiment of the present invention, further includes:
If detecting the next-hop route recovery, the corresponding two layers of forwarding of two layers of forwarding interface mark is opened
Interface.
In a kind of possible embodiment, two layers of forwarding interface includes two-layer virtual Ethernet interface；Described three
Layer forwarding interface includes L 3 virtual Ethernet interface.
In a kind of possible embodiment, the converging network equipment is for connecting two-layer virtual private network L2VPN
With three-layer virtual special network L3VPN or backbone network.
Second aspect, the embodiment of the present invention provide a kind of link switch-over method, comprising:
Detect whether two layers of forwarding interface of main converging network equipment close, wherein two layers of forwarding interface is the master
Converging network equipment is closed according to method described in any of the above-described network interface control method；
If detecting that two layers of forwarding interface of main converging network equipment are closed, connection two layers of forwarding interface is triggered
Conversion link switching.
In a kind of possible embodiment, triggering connects the conversion link switching of two layers of forwarding interface, specific to wrap
It includes:
For the conversion link of connection two layers of forwarding interface, while starting routing hard handover and setting main converging network
The main conversion link of standby upper connection two layers of forwarding interface switches to the main forwarding chain of backup aggregation network equipments configuration
The backup conversion link on road；
If routing hard handover is completed prior to main conversion link is switched to backup conversion link, according to routing hard handover
Newly-built conversion link forwarding data packets afterwards；
If main conversion link is switched to backup conversion link to complete prior to routing hard handover, backup forwarding is switched to
Link forwarding data packets.
In a kind of possible embodiment party, link switch-over method provided in an embodiment of the present invention, further includes:
If detecting that two layers of forwarding interface is opened, the conversion link for connecting two layers of forwarding interface is switched back into
Forwarding data packets.
The third aspect provides a kind of network interface control device, comprising:
Receiving unit, for receiving the data message that two layers of forwarding interface forwards from three layers of forwarding interface；
Searching unit, if for detecting that the three-layer network interface forwards the next-hop of the data message to route not
It is reachable, then in the corresponding relationship between routing iinformation and two layers of forwarding interface mark, it is corresponding to search next-hop routing iinformation
Two layers of forwarding interface mark；
Network interface control unit, for closing corresponding two layers of forwarding according to the two layers of forwarding interface mark found
Interface.
In a kind of possible embodiment, network interface control device provided in an embodiment of the present invention, further includes:
Acquiring unit turns in the forwarding table comprising three layers for obtaining three layers of forwarding interface corresponding forwarding table
Send out the corresponding relationship of interface identifier and next-hop routing iinformation；
Map unit, for identifying corresponding two layers of forwarding interface mark according to preconfigured three layers of forwarding interface
Know, that establishes that next-hop routing iinformation and three layers of forwarding interface identify between corresponding two layers of forwarding interface mark corresponding closes
System.
In a kind of possible embodiment, the network interface control unit, if being also used to detect described next
Route recovery is jumped, then opens two layers of forwarding interface and identifies corresponding two layers of forwarding interface.
In a kind of possible embodiment, two layers of forwarding interface includes two-layer virtual Ethernet interface；Described three
Layer forwarding interface includes L 3 virtual Ethernet interface.
Fourth aspect provides a kind of link switching device, comprising:
Detection unit, for detecting whether two layers of forwarding interface of main converging network equipment close, wherein two layers of forwarding
Interface is what the main converging network equipment was closed according to method described in any of the above-described network interface control method；
Link switching unit, if for detecting that two layers of forwarding interface of main converging network equipment are closed, trigger link
Switching.
In a kind of possible embodiment, the link switching unit is specifically used for for connection two layers of forwarding
The conversion link of interface, while starting routing hard handover and the master of two layers of forwarding interface will be connected in main converging network equipment
Conversion link switches to the backup conversion link of the main conversion link of backup aggregation network equipments configuration；If routing cut
It changes and is completed prior to main conversion link is switched to backup conversion link, then forwarded according to the newly-built conversion link after routing hard handover
Data message；If main conversion link is switched to backup conversion link to complete prior to routing hard handover, switches to backup and turn
Send out link forwarding data packets.
In a kind of possible embodiment, the link switching unit, if being also used to detect two layers of forwarding
Interface is opened, then switches back into the conversion link forwarding data packets for connecting two layers of forwarding interface.
5th aspect, provides a kind of network equipment, including at least one processor and at least one processor, wherein
The memory is stored with computer program, when described program is executed by the processor, so that the processor executes
State either step described in network interface control method or link switch-over method.
6th aspect provides a kind of possible medium of computer, is stored with the computer program that can be executed by the network equipment,
When described program is run on network devices, so that the network equipment executes above-mentioned network interface control method or link
Either step described in switching method.
Network interface control provided in an embodiment of the present invention and link switch-over method, device, the network equipment and medium,
In, network interface control method provided in an embodiment of the present invention, by establishing between routing iinformation and two layers of forwarding interface mark
Corresponding relationship, in this way, detect next-hop routing it is unreachable when, it is corresponding its can be closed according to next routing iinformation
Two layers of forwarding interface, to trigger the conversion link switching for being connected to two layers of forwarding interface.Correspondingly, the embodiment of the present invention provides
Link switch-over method, when detecting that two layers of forwarding interface are closed, the conversion link that triggering is connected to two layers of forwarding interface is cut
It changes to continue forwarding data packets, solves the problems, such as that data message is dropped since next routing is unreachable, to improve
The reliability of data transmission.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by written explanation
Specifically noted structure is achieved and obtained in book, claims and attached drawing.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes a part of the invention, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is that in the prior art, L2VPN accesses L3VPN or IP backbone networking mode schematic diagram；
Fig. 2 is that in the prior art, L2VPN accesses L3VPN or networking schematic diagram when backbone network under active and standby scene；
Fig. 3 is the reality for establishing the corresponding relationship between routing iinformation and two layers of forwarding interface according to embodiment of the present invention
Apply flow diagram；
Fig. 4 is the implementation process diagram according to the network interface control method of embodiment of the present invention；
Fig. 5 is the flow diagram according to the converging network device forwards data message of embodiment of the present invention；
Fig. 6 is the implementation process diagram according to the link switch-over method of embodiment of the present invention；
Fig. 7 is that networking when accessing L3VPN or backbone network according to L2VPN under the active and standby scene of embodiment of the present invention is shown
It is intended to；
Fig. 8 is the structural schematic diagram according to the network interface control device of embodiment of the present invention；
Fig. 9 is the structural schematic diagram according to the link switching device of embodiment of the present invention；
Figure 10 is the structural schematic diagram according to the network equipment of mode of the embodiment of the present invention.
Specific embodiment
In order to improve under active and standby scene, the reliability of data message forwarding when L2VPN accesses L3VPN or backbone network, this
Inventive embodiments provide a kind of control of network interface and link switch-over method, device, the network equipment and storage medium.
Specification and claims in the embodiment of the present invention and the term " first " in above-mentioned attached drawing, " second " etc. are
It is used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that the data used in this way
It is interchangeable under appropriate circumstances, so that the embodiments described herein can be other than the content for illustrating or describing herein
Sequence implement.
Referenced herein " multiple or several " refer to two or more."and/or" describes affiliated partner
Incidence relation, indicate may exist three kinds of relationships, for example, A and/or B, can indicate: individualism A exists simultaneously A and B,
These three situations of individualism B.Character "/" typicallys represent the relationship that forward-backward correlation object is a kind of "or".
Below in conjunction with Figure of description, preferred embodiment of the present invention will be described, it should be understood that described herein
Preferred embodiment only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention, and in the absence of conflict, this hair
The feature in embodiment and embodiment in bright can be combined with each other.
For under active and standby scene, in the side converging network equipment L3VPN link failure, the progress of the side L2VPN can not be triggered
The problem of link switching causes data message to abandon, and reduces data message forwarding reliability, in the embodiment of the present invention, according to
Corresponding relationship between three layers of forwarding interface mark and routing iinformation and two layers of forwarding interfaces mark, it is established that routing iinformation with
Corresponding relationship between two layers of forwarding interface mark, in this way, when judging that next routing is unreachable in L3VPN network, root
Its corresponding two layers of forwarding interface is searched according to corresponding routing iinformation to identify and close, and thus triggers two layers of forwarding interfaces mark
The data message of forwarding is switched in standby converging network equipment and is forwarded, and is avoided since two layers of forwarding interface mark can not be felt
Packet loss caused by primary data transmission link failure, to improve the reliability of data forwarding.
It should be noted that converging network equipment involved in the embodiment of the present invention refers to while including that two layers of forwarding connect
The network equipment of mouth and three layers of forwarding interface is respectively used to realize the function that MPLS L2VPN termination and MPLS L3VPN access
Energy.
When it is implemented, it is directed to converging network equipment, it can be for three layers of forwarding interface connection of the converging network equipment
Data forwarding network generate routing table during, that establishes between routing iinformation and two layers of forwarding interface mark corresponding closes
System.Specifically, it the corresponding relationship that can be established according to following below scheme between routing iinformation and two layers of forwarding interface mark: obtains
Take the corresponding forwarding table of three layers of forwarding interface, wherein include three layers of forwarding interface mark and next-hop routing iinformation in forwarding table
Corresponding relationship；Corresponding two layers of forwarding interface mark is identified according to preconfigured three layers of forwarding interface, establishes next-hop road
The corresponding relationship between corresponding two layers of forwarding interface mark is identified by information and three layers of forwarding interface.
In a kind of possible embodiment, routing iinformation can be established according to process shown in Fig. 3 and is connect with two layers of forwarding
Corresponding relationship between mouthful:
S31, the data forwarding network connected for three layers of forwarding interface of converging network equipment generate routing table.
When it is implemented, two routing devices are upon connection, it can be by running BGP (Border Gateway
Protocol, Border Gateway Protocol) configure neighborhood, generate routing table.Wherein, BGP includes EBGP (external BGP agreement)
With IBGP (Interior Border Gateway Protocol), EBGP operates in the neighborhood of the foundation of the bgp router between different AS (autonomous system),
IBGP operates in the neighborhood that bgp router is established between identical AS.
Three layers of forwarding interface of converging network equipment can be by running bgp protocol, routing of the study to next routing
Information, the routing iinformation learnt can be IP (Internet protocol) address of next-hop routing.
S32, forwarding table is generated according to routing table, includes three layers of forwarding interface mark for reaching next-hop routing in forwarding table
Know.
Forwarding table is generated to routing according to step S31 study, includes three layers for reaching study to routing in forwarding table
Forwarding interface mark.
S33, corresponding two layers of forwarding interface mark is identified according to preconfigured three layers of forwarding interface, establishes next-hop road
Corresponding relationship between corresponding two layers of forwarding interface mark is identified by information and three layers of forwarding interface.
In specific implementation, in the process configured to two layers of forwarding interface of converging network equipment and three layers of forwarding interface
In, the identical two layers of forwarding interface of mark is corresponding with three layers of forwarding interface, and data message enters polymerization from two layers of forwarding interface
After the network equipment, it is forwarded from identical three layers of forwarding interface is identified.
By the above process, the next-hop routing iinformation and two layers of forwarding interface that can establish three layers of forwarding interface identify it
Between corresponding relationship, as shown in table 1, corresponding relationship between the routing iinformation established and two layers of forwarding interface mark shows
Meaning structure:
Table 1
| Routing iinformation | Three layers of forwarding interface | Two layers of forwarding interface |
| 1.1.1.11 | L3VE1 | L2VE1 |
| 1.1.1.10 | L3VE2 | L2VE2 |
| …… | …… | …… |
Corresponding relationship between routing iinformation and two layers of forwarding interface mark based on foundation, the embodiment of the invention provides
A kind of network interface control method, as shown in figure 4, may comprise steps of:
S41, converging network equipment three layers of forwarding interface from the double layer network interface datagram of converging network equipment
Text.
When it is implemented, after data message enters converging network equipment from two layers of forwarding interface, from converging network equipment
Three layers of forwarding interface are forwarded.
If S42, converging network equipment detect that the next-hop routing of forwarding data packets is unreachable, from the road of foundation
By searching the corresponding two layers of forwarding interface of next-hop routing iinformation in the corresponding relationship between information and two layers of forwarding interface mark
Mark.
Below in conjunction with networking mode shown in FIG. 1, the data message that converging network equipment interconnection receives is handled
Process is illustrated, and user is linked into MPLS L2VPN by PE1, and PE-1 passes through two layers of forwarding interface and converging network equipment
(being PE-agg in Fig. 1) establishes PW connection, transmits the two layer message of user to converging network device transparency by the PW, polymerize
The network equipment can be forwarded, as shown in figure 5, including after the data message for receiving PE1 transmission according to following below scheme
Following steps:
Two layers of forwarding interface termination MPLS L2VPN message of S51, converging network equipment.
Wherein, two layers of forwarding interface enter the incoming interface of PE-agg as message, are two layer message (in MPLS L2VPN
The message of transmitting) destination node, terminate MPLS L2VPN message, i.e., deletion two layer message in MPLS label, restore original
Two layer message.
Original two layer message is sent to three layers of forwarding interface by S52, two layers of forwarding interface.
When it is implemented, three layers of forwarding interface as MPLS L2NPN network CE (Customer Edge router) equipment and
The access point of MPLS L3VPN or IP backbone are the outgoing interface of message.Three layers of forwarding interface are receiving two layers of forwarding
After the original two layer message of interface forwarding, next-hop routing is searched in the routing table, passes through MPLS L3VPN or IP backbone
Net is transmitted to purpose user.
In the above process, three layers of forwarding interface are during forwarding data packets, if detecting next routing not
It is reachable, then in the corresponding relationship according to next-hop routing iinformation between the routing iinformation of foundation and two layers of forwarding interface mark,
Search its corresponding two layers of forwarding interface.
S43, converging network equipment are identified according to the two layers of forwarding interface found, close corresponding two layers of forwarding interface.
In this way, if opposite equip. detect converging network equipment two layers of forwarding interface close when, can the company of triggering
It is connected to the link switching of two layers of forwarding interface, to guarantee the normal forwarding of data message.
As shown in fig. 6, it is the implementation process diagram of conversion link switching method, may comprise steps of:
Whether S61, the main two layers of forwarding interface of converging network equipment of detection close.
When it is implemented, the opposite equip. connecting with converging network equipment detects main two layers of forwarding interface of converging network equipment
Whether close.
If S62, detecting that two layers of forwarding interface of main converging network equipment are closed, triggers and connect two layers of forwarding interface
Conversion link switching.
, can be for the conversion link of two layers of forwarding interface of connection in the embodiment of the present invention, while starting routing hard handover
Match with the main conversion link for connecting two layers of forwarding interface in main converging network equipment is switched on the backup aggregation network equipment
The backup conversion link for the main conversion link set, when it is implemented, if routing hard handover is prior to switching main conversion link
It is completed to backup conversion link, then according to the newly-built conversion link forwarding data packets after routing hard handover；If by main forwarding
Link switching is completed to backup conversion link prior to routing hard handover, then switches to backup conversion link forwarding data packets.
When it is implemented, corresponding two layers can be opened if main converging network equipment detects next route recovery
Forwarding interface identifies corresponding two layers of forwarding interface.Correspondingly, if the peer network device of main converging network equipment detects
Two layers of forwarding interface are opened, then conversion link can be switched back into the conversion link forwarding number of Layer 2 data forwarding interface connection
According to message.
In a kind of possible embodiment, converging network equipment can be used for connecting L2VPN and L3VPN or backbone
Net.Correspondingly, two layers of forwarding interface include two-layer virtual Ethernet interface (L2VE)；Three layers of forwarding interface include L 3 virtual with
Too network interface (L3VE).The data forwarding network of L3VE binding can be VPN or IP backbone.
Embodiment for a better understanding of the present invention, below by taking converging network equipment is PE-agg as an example, as shown in connection with fig. 7
Networking mode the specific implementation process of the embodiment of the present invention is illustrated.
As shown in fig. 7, NE31 as PE-agg, is established with NE11 and NE10 configuration bgp neighbor respectively, wherein and NE11
The address PEER (interface IP address that the address PEER is followed by opposite end neighbours) for establishing neighborhood is 1.1.1.11, the private learnt
Network is 1.1.1.10 by the address PEER for establishing neighborhood for 11.1.1.1/32 and NE10, and the VPN route learnt is
10.1.1.1/32。
Wherein, there are two L2VPN business configurations on NE11 and NE10 by NE41, and main PW is NE31, and standby PW is NE32.
On NE31 or NE32, VE mouthfuls are configured for it on PE-agg respectively for above-mentioned two L2VPN, two are directed on PE-agg
Two VE mouthfuls of L2VPN business configuration, VE mouth 1 and VE mouth 2 respectively include L2VE mouthfuls and L3VE mouthfuls, L3VE mouthfuls of bindings are corresponding
VPN, the L2VE mouthfuls of access ports as L2VPN, L2VE mouthfuls and L3VE mouthfuls is associated together.L3VE mouth 1 binds VPN1, for NE11
VPN learn routing, L3VE mouth 2 bind VPN2, for NE10 VPN study route.
NE31 establishes bgp neighbor relationship with NE11 and NE10 simultaneously, learns VPN route, specifically, 11.1.1.1/32 hair
The route next jump come is 1.1.1.11, and is generated in the forwarding table of VPN1 according to the routing learnt, 10.1.1.1/32 hair
The route next jump come is 1.1.1.10, and the forwarding table of VPN2 is generated also according to the routing learnt.
The method provided according to embodiments of the present invention, converging network equipment establish 1.1.1.11 L3VE corresponding with VPN1 is arrived
Corresponding relationship between mouth 1, and then corresponding L2VE mouthfuls of number is found according to L3VE mouthfuls of number, thus directed towards { next-hop road
By -> { L2VE mouthfuls } foundation have corresponded to relationship, when L5+L9 failure occurs, if being detected in route forwarding table on NE31
1.1.1.11 next-hop is unreachable, then L2VE mouthfuls associated before can finding at once, is turned off (DOWN).With Fig. 7
For middle L5+L9 failure, if converging network equipment detects that next routing is unreachable, established before VPN1,
1.1.1.11 } -> { L2VE1 } incidence relation, and the incidence relation of { VPN2,1.1.1.10 } -> { L2VE2 }, by L2VE1 and
L2VE2 is closed, and PW on such NE41 will switch to the PW established between NE32 and forward data because the L2VE mouth of opposite end is closed
Packet.
It should be noted that if the next-hop 1.1.1.11 for only reaching NE11 is unreachable, still according to networking mode
1.1.1.10 reachable, then when it is implemented, L2VE1 mouthfuls and need to only be closed according to 1.1.1.11 finder is corresponding, will be sent to
The data message of VPN1 switches to NE32 forwarding, and the data message for being sent to VPN2 still can be by between N41 and N31
PW is normally forwarded.
In the above process, by the corresponding relationship established between routing iinformation and two layers of forwarding interface, in this way, turning when three layers
When hair interface detects that next routing is unreachable, its corresponding two layers of forwarding can be closed according to next routing iinformation and is connect
Mouthful, the conversion link that thus triggering connects two layers of forwarding interface switches over, and avoids since two layers of forwarding interface can not be felt
Packet loss phenomenon caused by three layers of conversion link failure is known, to improve the reliability of data message forwarding.Moreover, the above process
In, it need to only switch the conversion link for the corresponding two layers of forwarding interface of link that connection is broken down, be set without closing converging network
Standby other links between opposite equip., do not influence the normal forwarding of other chain road data messages.
Based on the same inventive concept, a kind of control of network interface and link switching dress are additionally provided in the embodiment of the present invention
It sets, since the principle that above-mentioned apparatus solves the problems, such as is similar to network interface control and link switch-over method, above-mentioned apparatus
Implementation may refer to the implementation of method, and overlaps will not be repeated.
As shown in figure 8, it is the structural schematic diagram of network interface control device provided in an embodiment of the present invention, comprising:
Receiving unit 81, for receiving the data message that two layers of forwarding interface forwards from three layers of forwarding interface；
Searching unit 82, if for detecting that it is unreachable that the next-hop of three-layer network interface forwarding data packets routes,
Then in the corresponding relationship between routing iinformation and two layers of forwarding interface mark, searches corresponding two layers of next-hop routing iinformation and turn
Send out interface identifier；
Network interface control unit 83, for closing corresponding two layers and turning according to the two layers of forwarding interface mark found
Send out interface.
In a kind of possible embodiment, network interface control device provided in an embodiment of the present invention, further includes:
Acquiring unit turns in the forwarding table comprising three layers for obtaining three layers of forwarding interface corresponding forwarding table
Send out the corresponding relationship of interface identifier and next-hop routing iinformation；
Map unit, for identifying corresponding two layers of forwarding interface mark according to preconfigured three layers of forwarding interface
Know, that establishes that next-hop routing iinformation and three layers of forwarding interface identify between corresponding two layers of forwarding interface mark corresponding closes
System.
In a kind of possible embodiment, the network interface control unit, if being also used to detect described next
Route recovery is jumped, then opens two layers of forwarding interface and identifies corresponding two layers of forwarding interface.
In a kind of possible embodiment, two layers of forwarding interface includes two-layer virtual Ethernet interface；Described three
Layer forwarding interface includes L 3 virtual Ethernet interface.
In a kind of possible embodiment, the converging network equipment is for connecting two-layer virtual private network L2VPN
With three-layer virtual special network L3VPN or backbone network.
As shown in figure 9, it is the structural schematic diagram of link switching device provided in an embodiment of the present invention, comprising:
Detection unit 91, for detecting whether two layers of forwarding interface of main converging network equipment close, wherein described two layers turn
Hair interface is what the main converging network equipment was closed according to method described in any of the above-described network interface control method；
Link switching unit 92, if triggering chain for detecting that two layers of forwarding interface of main converging network equipment are closed
Road switching.
In a kind of possible embodiment, the link switching unit is specifically used for for connection two layers of forwarding
The conversion link of interface, while starting routing hard handover and the master of two layers of forwarding interface will be connected in main converging network equipment
Conversion link switches to the backup conversion link of the main conversion link of backup aggregation network equipments configuration；If routing cut
It changes and is completed prior to main conversion link is switched to backup conversion link, then forwarded according to the newly-built conversion link after routing hard handover
Data message；If main conversion link is switched to backup conversion link to complete prior to routing hard handover, switches to backup and turn
Send out link forwarding data packets.
In a kind of possible embodiment, the link switching unit, if being also used to detect two layers of forwarding
Interface is opened, then switches back into the conversion link forwarding data packets for connecting two layers of forwarding interface.
For convenience of description, above each section is divided by function describes respectively for each module (or unit).Certainly, exist
Implement to realize the function of each module (or unit) in same or multiple softwares or hardware when the present invention.
After the network interface control for describing exemplary embodiment of the invention and link switch-over method and device, connect
Get off, introduces the network equipment of another exemplary embodiment according to the present invention.
Person of ordinary skill in the field it is understood that various aspects of the invention can be implemented as system, method or
Program product.Therefore, various aspects of the invention can be embodied in the following forms, it may be assumed that complete hardware embodiment, complete
The embodiment combined in terms of full Software Implementation (including firmware, microcode etc.) or hardware and software, can unite here
Referred to as circuit, " module " or " system ".
In some possible embodiments, the network according to the invention equipment can include at least at least one processing
Device and at least one processor.Wherein, the memory is stored with program code, when said program code is by the processing
When device executes, so that the processor executes the net of the illustrative embodiments various according to the present invention of this specification foregoing description
Step in network Interface Controller and link switch-over method.For example, the processor can execute step S41 as shown in Figure 4,
Double layer network interface data message of the three layers of forwarding interface of converging network equipment from converging network equipment；Step S42, such as
Fruit converging network equipment detects that the next-hop routing of three layers of forwarding interface forwarding data packets is unreachable, then from the routing of foundation
In corresponding relationship between information and two layers of forwarding interface mark, the corresponding two layers of forwarding interface mark of next-hop routing iinformation is searched
Knowledge and step S43, it is identified according to the two layers of forwarding interface found, closes corresponding two layers of forwarding interface；Or it executes as schemed
Whether step S61 shown in 6, the main two layers of forwarding interface of converging network equipment of detection close；And if step S62, detection
It is closed to two layers of forwarding interface of main converging network equipment, then triggers the conversion link switching for connecting two layers of forwarding interface.
The network equipment 100 of this embodiment according to the present invention is described referring to Figure 10.The net that Figure 10 is shown
Network equipment 100 is only an example, should not function to the embodiment of the present invention and use scope bring any restrictions.
As shown in Figure 10, the network equipment 100 is showed in the form of universal computing device.The component of the network equipment 100 can be with
Including but not limited to: at least one above-mentioned processor 101, above-mentioned at least one processor 102, connection different system components (packet
Include memory 102 and processor 101) bus 103.
Bus 103 indicates one of a few class bus structures or a variety of, including memory bus or Memory Controller,
Peripheral bus, processor or the local bus using any bus structures in a variety of bus structures.
Memory 102 may include the readable medium of form of volatile memory, such as random access memory (RAM)
1021 and/or cache memory 1022, it can further include read-only memory (ROM) 1023.
Memory 102 can also include program/utility 1025 with one group of (at least one) program module 1024,
Such program module 1024 includes but is not limited to: operating system, one or more application program, other program modules and
It may include the realization of network environment in program data, each of these examples or certain combination.
The network equipment 100 can also be communicated with one or more external equipments 104 (such as keyboard, sensing equipment etc.), also
Can be enabled a user to one or more equipment interacted with the network equipment 100 communication, and/or with make the network equipment
The 100 any equipment (such as router, modem etc.) that can be communicated with one or more of the other calculating equipment are led to
Letter.This communication can be carried out by input/output (I/O) interface 105.Also, the network equipment 100 can also be suitable by network
Orchestration 106 and one or more network (such as local area network (LAN), wide area network (WAN) and/or public network, such as because of spy
Net) communication.As shown, network adapter 106 is communicated by bus 103 with other modules for the network equipment 100.It should
Understand, although not shown in the drawings, other hardware and/or software module can be used in conjunction with the network equipment 100, including but unlimited
In: microcode, device driver, redundant processor, external disk drive array, RAID system, tape drive and data
Backup storage system etc..
In some possible embodiments, each side of network interface control provided by the invention and link switch-over method
Face is also implemented as a kind of form of program product comprising program code, when described program product on a computing device
When operation, said program code is shown for making the computer equipment execute the various according to the present invention of this specification foregoing description
Step in the network interface control of example property embodiment and link switch-over method, for example, the computer equipment can execute
Three layers of forwarding interface of step S41, converging network equipment as shown in Figure 4 connect from the double layer network interface of converging network equipment
Receive data message；If step S42, converging network equipment detects the next-hop routing of three layers of forwarding interface forwarding data packets
It is unreachable, then in the corresponding relationship between the routing iinformation of foundation and two layers of forwarding interface mark, search next-hop routing letter
It ceases corresponding two layers of forwarding interface mark and step S43, according to the two layers of forwarding interface mark found, closes corresponding two
Layer forwarding interface；Or it executes step S61 as shown in Figure 6, detect whether main two layers of forwarding interface of converging network equipment close
It closes；And if step S62, detect that two layers of forwarding interface of main converging network equipment are closed, trigger this two layers forwarding of connection
The conversion link of interface switches.
Described program product can be using any combination of one or more readable mediums.Readable medium can be readable letter
Number medium or readable storage medium storing program for executing.Readable storage medium storing program for executing for example may be-but not limited to-electricity, magnetic, optical, electromagnetic, red
The system of outside line or semiconductor, device or device, or any above combination.The more specific example of readable storage medium storing program for executing
(non exhaustive list) includes: the electrical connection with one or more conducting wires, portable disc, hard disk, random access memory
(RAM), read-only memory (ROM), erasable programmable read only memory (EPROM or flash memory), optical fiber, portable compact disc
Read memory (CD-ROM), light storage device, magnetic memory device or above-mentioned any appropriate combination.
The program product for network interface control and link switching of embodiments of the present invention can use portable
Compact disk read-only memory (CD-ROM) and including program code, and can run on the computing device.However, journey of the invention
Sequence product is without being limited thereto, and in this document, readable storage medium storing program for executing can be any tangible medium for including or store program, the journey
Sequence can be commanded execution system, device or device use or in connection.
Readable signal medium may include in a base band or as the data-signal that carrier wave a part is propagated, wherein carrying
Readable program code.The data-signal of this propagation can take various forms, including --- but being not limited to --- electromagnetism letter
Number, optical signal or above-mentioned any appropriate combination.Readable signal medium can also be other than readable storage medium storing program for executing it is any can
Read medium, the readable medium can send, propagate or transmit for by instruction execution system, device or device use or
Program in connection.
The program code for including on readable medium can transmit with any suitable medium, including --- but being not limited to ---
Wirelessly, wired, optical cable, RF etc. or above-mentioned any appropriate combination.
The program for executing operation of the present invention can be write with any combination of one or more programming languages
Code, described program design language include object oriented program language-Java, C++ etc., further include conventional
Procedural programming language-such as " C " language or similar programming language.Program code can be fully in user
It calculates and executes in equipment, partly executes on a user device, being executed as an independent software package, partially in user's calculating
Upper side point is executed on a remote computing or is executed in remote computing device or server completely.It is being related to far
Journey calculates in the situation of equipment, and remote computing device can pass through the network of any kind --- including local area network (LAN) or extensively
Domain net (WAN)-be connected to user calculating equipment, or, it may be connected to external computing device (such as utilize Internet service
Provider is connected by internet).
It should be noted that although being referred to several unit or sub-units of device in the above detailed description, this stroke
It point is only exemplary not enforceable.In fact, embodiment according to the present invention, it is above-described two or more
The feature and function of unit can embody in a unit.Conversely, the feature and function of an above-described unit can
It is to be embodied by multiple units with further division.
In addition, although describing the operation of the method for the present invention in the accompanying drawings with particular order, this do not require that or
Hint must execute these operations in this particular order, or have to carry out shown in whole operation be just able to achieve it is desired
As a result.Additionally or alternatively, it is convenient to omit multiple steps are merged into a step and executed by certain steps, and/or by one
Step is decomposed into execution of multiple steps.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications can be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of network interface control method characterized by comprising
Double layer network interface data message of the three layers of forwarding interface of converging network equipment from the converging network equipment；
If the converging network equipment detects that the three-layer network interface forwards the next-hop of the data message to route not
It is reachable, then in the corresponding relationship between routing iinformation and two layers of forwarding interface mark, it is corresponding to search next-hop routing iinformation
Two layers of forwarding interface mark；
The converging network equipment is identified according to the two layers of forwarding interface found, closes corresponding two layers of forwarding interface.
2. the method as described in claim 1, which is characterized in that pair between the routing iinformation and two layers of forwarding interface mark
It should be related to and obtain in accordance with the following methods:
The corresponding forwarding table of three layers of forwarding interface is obtained, includes three layers of forwarding interface mark and next-hop in the forwarding table
The corresponding relationship of routing iinformation；
Corresponding two layers of forwarding interface mark is identified according to preconfigured three layers of forwarding interface, establishes next-hop routing letter
Cease the corresponding relationship identified between corresponding two layers of forwarding interface mark with three layers of forwarding interface.
3. method according to claim 1 or 2, which is characterized in that further include:
If detecting the next-hop route recovery, opens the corresponding two layers of forwarding of two layers of forwarding interface mark and connect
Mouthful.
4. method according to claim 2, which is characterized in that two layers of forwarding interface includes that two-layer virtual Ethernet connects
Mouthful；Three layers of forwarding interface includes L 3 virtual Ethernet interface.
5. the method as described in claim 1, which is characterized in that the converging network equipment is for connecting Layer 2 virtual private network
Network L2VPN and three-layer virtual special network L3VPN or backbone network.
6. a kind of link switch-over method characterized by comprising
Detect whether two layers of forwarding interface of main converging network equipment close, wherein two layers of forwarding interface is the main polymerization
The network equipment is closed according to method described in Claims 1 to 5 any claim；
If detecting that two layers of forwarding interface of main converging network equipment are closed, the forwarding for connecting two layers of forwarding interface is triggered
Link switching.
7. method as claimed in claim 6, which is characterized in that the conversion link that triggering connects two layers of forwarding interface is cut
It changes, specifically includes:
For connecting the conversion link of two layers of forwarding interface, while starting routing hard handover and will be in main converging network equipment
The main conversion link for connecting two layers of forwarding interface switches to the main conversion link of backup aggregation network equipments configuration
Backup conversion link；
If routing hard handover is completed prior to main conversion link is switched to backup conversion link, after routing hard handover
Newly-built conversion link forwarding data packets；
If main conversion link is switched to backup conversion link to complete prior to routing hard handover, backup conversion link is switched to
Forwarding data packets.
8. method according to claim 6 or 7, which is characterized in that further include:
If detecting that two layers of forwarding interface is opened, the conversion link forwarding for connecting two layers of forwarding interface is switched back into
Data message.
9. a kind of network equipment, which is characterized in that including at least one processor and at least one processor, wherein described
Memory is stored with computer program, when described program is executed by the processor, so that the processor perform claim is wanted
The step of seeking 1~5 or 6~8 any claim the method.
10. a kind of computer-readable medium, which is characterized in that it is stored with the computer program that can be executed by the network equipment, when
When described program is run on network devices, so that the network equipment perform claim requires 1~5 or 6~8 any rights to want
The step of seeking the method.
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