CN110351129A - Cross-domain guard method and system are transmitted in grouping - Google Patents
Cross-domain guard method and system are transmitted in grouping Download PDFInfo
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- CN110351129A CN110351129A CN201910569446.9A CN201910569446A CN110351129A CN 110351129 A CN110351129 A CN 110351129A CN 201910569446 A CN201910569446 A CN 201910569446A CN 110351129 A CN110351129 A CN 110351129A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0668—Management of faults, events, alarms or notifications using network fault recovery by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure
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Abstract
The invention discloses a kind of groupings to transmit cross-domain guard method and system, is related to packet transmission networks protection field.The step of this method includes: on each interlink node of MC-LAG, and by AC side chain line state, network side link state and the network side preferred link of the interlink node, association forms pretection switch triple；AC side chain line state and network side link state include normal condition and abnormality；After all interlink nodes of same MC-LAG elect the pretection switch triple of highest priority, according to the corresponding interlink node of pretection switch triple of highest priority, the pretection switch of the side AC and network side is carried out.The present invention can meet in point domain protected field link failure not under the principle of overseas transmitting, realize that cross-domain pretection switch is transmitted in grouping.
Description
Technical field
The present invention relates to packet transmission networks to protect field, and in particular to a kind of cross-domain guard method of grouping transmission and is
System.
Background technique
Grouping conveying network uses layering point domain networking to realize flexible expansion, and different sub-network protects respective business
It protects, realizes the high reliability request of cross-domain (layering divides domain) transmission between different sub-network using dual node interconnection protection technique；
I.e. between 2 domains in the side AC and network side, interconnected by 2 nodes:
MC-LAG (Multi-Chassis Link is mostly used under the side AC (client accesses side) Ethernet egress scenario
Aggregation Group, striding equipment link aggregation working group) 2 interlink nodes (form 1 group of chain by dual-homing protection technology
Road polymerize working group), network side can dispose the dual-homing protection that pseudo-wire redundancy protecting realizes business, to resist teleservice appearance
Single point failure causes the wind of service disconnection, and provides the function of redundancy protection of internet device between domain.
Currently, existing cross-domain guard method are as follows: after pretection switch (i.e. masterslave switchover) occurs for this domain, inform other domains,
Link after other domains are switched according to this domain carries out corresponding pretection switch；It is past such as after pretection switch occurs for network sidelinks
Toward by the way of disconnecting faulty link link, to inform the side AC, and then the side AC is promoted to carry out corresponding pretection switch, this is violated
Divide in the protected field of domain link failure not to the principle of overseas transmitting.
Summary of the invention
In view of the deficiencies in the prior art, present invention solves the technical problem that are as follows: how to meet a point domain protected field
Interior link failure is not under the principle of overseas transmitting, realizing that cross-domain pretection switch is transmitted in grouping.
To achieve the above objectives, cross-domain guard method is transmitted in grouping provided by the invention, comprising the following steps: in MC-LAG
Each interlink node on, by the AC side chain line state, network side link state and the preferred chain of network side of the interlink node
Road, association form pretection switch triple；AC side chain line state and network side link state include normal condition and abnormal shape
State；After all interlink nodes of same MC-LAG elect the pretection switch triple of highest priority, according to highest priority
The corresponding interlink node of pretection switch triple, carry out the side AC and network side pretection switch.
Based on the above technical solution, the AC side chain line state, network side link state and network side are preferred
The acquisition modes of link include: AC side chain line state and network side link state is initially normal condition, the preferred chain of network side
Road preassigns.
Based on the above technical solution, this method is further comprising the steps of: the interlink node monitors AC side chain
It is abnormality by the AC sidelinks status modifier of the node when road is broken down；Interlink node monitors that network sidelinks are sent out
When raw failure, the network side link state of the node is revised as abnormality and corresponding modification network side preferred link.
Based on the above technical solution, all interlink nodes of the same MC-LAG elect highest priority
Pretection switch triple, comprising the following steps: be the interconnection of normal condition in AC side chain line state and network side link state
In the pretection switch triple of node, the pretection switch triple of the highest priority of network side preferred link is chosen, as choosing
The pretection switch triple for the highest priority enumerated.
Based on the above technical solution, the corresponding mutual interlink of the pretection switch triple according to highest priority
Point carries out the pretection switch of the side AC and network side, comprising the following steps: selects the pretection switch triple of highest priority corresponding
Interlink node be host node, select the AC sidelinks of host node for primary AC sidelinks, select the network side of host node preferred
Link is primary network side link.
Cross-domain protection system, including pretection switch triple creation module, pretection switch are transmitted in grouping provided by the invention
Triple elects module and pretection switch module；
Pretection switch triple creation module is used for: in each interlink node of MC-LAG, by the AC of the interlink node
Side chain line state, network side link state and network side preferred link, association form pretection switch triple；AC sidelinks
State and network side link state include normal condition and abnormality；
Pretection switch triple election module is used for: in the pretection switch triple of same MC-LAG, being elected preferential
The highest pretection switch triple of grade；
Pretection switch module is used for: according to the corresponding interlink node of pretection switch triple of highest priority, carrying out AC
The pretection switch of side and network side.
Based on the above technical solution, the AC side chain line state, network side link state and network side are preferred
The acquisition modes of link include: AC side chain line state and network side link state is initially normal condition, the preferred chain of network side
Road preassigns.
Based on the above technical solution, the pretection switch triple creation module is also used to: monitoring AC side chain
It is abnormality by AC sidelinks status modifier when road is broken down；When monitoring that network sidelinks break down, network side chain
Line state is revised as abnormality and corresponding modification network side preferred link.
Based on the above technical solution, the workflow of the pretection switch triple election module includes: in AC
Side chain line state and network side link state are to choose network side in the pretection switch triple of the interlink node of normal condition
The pretection switch triple of the highest priority of preferred link, the pretection switch triple as the highest priority elected.
Based on the above technical solution, the workflow of the pretection switch module includes: selection highest priority
The corresponding interlink node of pretection switch triple be host node, select the AC sidelinks of host node for primary AC sidelinks, choosing
The network side preferred link for selecting host node is primary network side link.
Compared with the prior art, the advantages of the present invention are as follows:
The present invention can (AC side chain line state, network side link state and network side be excellent according to pretection switch triple
Select chain road), directly carry out the pretection switch of the side AC and network side.It follows that the present invention carries out the trigger condition of pretection switch
For the variation of triplet information, i.e. triplet information variation avoids in the prior art to prompt the failure of corresponding link
Situation of the link failure to overseas transmitting in domain.Therefore, the present invention can meet in point domain protected field link failure not to domain
Under the principle of outer transmitting, being allowed by pretection switch triple end-to-end can find a correct channel and transmit client's industry
Business is switched to realize grouping and transmit cross-domain coordinating protection.
Detailed description of the invention
Fig. 1 is list CE dual homed PW redundancy protecting schematic diagram of a scenario；
Fig. 2 is that list CE dual homed PW redundancy protecting AC sidelinks error protection switches schematic diagram；
Fig. 3 is list CE dual homed PW redundancy protecting network side link failure pretection switch schematic diagram；
Fig. 4 is that list CE dual homed PW redundancy protecting interlink node error protection switches schematic diagram；
Fig. 5 is more CE dual homed PW redundancy protecting schematic diagram of a scenario；
Fig. 6 is that more CE dual homed PW redundancy protecting AC sidelinks error protections switch schematic diagram；
Fig. 7 is more CE dual homed PW redundancy protecting network side single link failure pretection switch schematic diagrames；
Fig. 8 is that 2 link continuous faults of more CE dual homed PW redundancy protecting network sides cause single node lost contact pretection switch to show
It is intended to；
Fig. 9 is that 3 link continuous faults of more CE dual homed PW redundancy protecting network sides cause multinode lost contact pretection switch to show
It is intended to；
Figure 10 is that more CE dual homed PW redundancy protecting interlink node error protections switch schematic diagram.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and embodiments.
Cross-domain guard method is transmitted in grouping in the embodiment of the present invention, comprising the following steps:
On each interlink node of MC-LAG, by the AC side chain line state of the interlink node, network side link state, with
And network side preferred link, association form pretection switch triple；AC side chain line state and network side link state include just
Normal state and abnormality.After all interlink nodes of same MC-LAG elect the pretection switch triple of highest priority,
According to the corresponding interlink node of pretection switch triple of highest priority, the pretection switch of the side AC and network side is carried out.
It follows that the present invention can according to pretection switch triple (AC side chain line state, network side link state, with
And network side preferred link), the pretection switch of the side AC and network side is directly carried out, and then avoid link in domain in the prior art
Situation of the failure to overseas transmitting.Therefore, the present invention can meet in point domain protected field link failure not to overseas transmitting
Under principle, by pretection switch triple allow it is end-to-end can find a correct channel and transmit client traffic, thus real
Show the cross-domain coordinating protection of grouping transmission to switch.
Illustrate the method for we below by six embodiments.
Embodiment one:
The acquisition modes of the line state of AC side chain described in this method, network side link state and network side preferred link
It include: AC side chain line state and network side link state is initially normal condition, network side preferred link preassigns (specified
Mode is same as the prior art).
Embodiment two:
This method is further comprising the steps of: when interlink node monitors that AC sidelinks break down, by the side AC of the node
Link state is revised as abnormality.When interlink node monitors that network sidelinks break down, by the network side chain of the node
Line state is revised as abnormality and corresponding modification network side preferred link, because of network side link failure, then before representing
Network side preferred link can not communicate, so network side preferred link is needed to be revised as capable of communicating and highest priority
Network sidelinks.
Embodiment three:
All interlink nodes of same MC-LAG described in this method elect the pretection switch triple of highest priority,
The following steps are included:
S101: judge whether at least one of two following situations occur:
Situation one, same MC-LAG the AC side chain line states of all interlink nodes be abnormality；
The network side link state (interlink node of failure excludes) of situation and all interlink nodes of same MC-LAG is
For abnormality；
If, it was demonstrated that all links can not communicate, and directly report an error end at this time, otherwise go to S102.
S102: being the pretection switch three of the interlink node of normal condition in AC side chain line state and network side link state
In tuple, the pretection switch triple of the highest priority of network side preferred link is chosen, which is the institute of same MC-LAG
The pretection switch triple for the highest priority for thering is interlink node to elect.
Example IV:
According to the corresponding interlink node of pretection switch triple of highest priority in this method, the side AC and network side are carried out
Pretection switch, comprising the following steps:
The corresponding interlink node of pretection switch triple for selecting highest priority is host node, other interlink nodes are made
For slave node.Pass through LACP (Link Aggregation Control Protocol, link aggregate control protocol) and access side
Equipment is negotiated, and selecting the AC sidelinks of host node for primary AC sidelinks (is automated communications state by the link setting
Active), select the AC sidelinks of slave node for spare AC sidelinks (being wait state Standby by the link setting).
Select the network side preferred link of host node for primary network side link, that activates highest priority in primary network sidelinks can
Use pseudo-wire；Using other available network sidelinks of host node as reserve link.
Embodiment five: shown in Figure 1, application scenarios are to configure from CE1 (client-side device) respectively through NE1 (network side
Equipment) or NE2 after, to the dual homed business of NE3, i.e., AC sidelinks are 2: CE1 to NE1, CE1 to NE2, network sidelinks are 2
Item: NE1 to NE3 (predominating path), NE2 to NE3 (backup path)；NE1 and NE2 is the interlink node of the side AC and network side,
PW redundancy is configured on NE3, that is, configures a plurality of pseudo-wire communicated respectively with NE1, NE3.
Grouping under the scene transmit cross-domain guard method the following steps are included:
CE1 arrives the dual homed business of NE1, NE2 respectively, by configure NE1 and NE2 MC-LAG realize (i.e. by NE1, NE2,
CE1 forms 1 group of link aggregation working group), MC-LAG is configured to unsupported share operating mode (i.e. masterslave switchover operating mode).
The AC side chain line state and network side link state of NE1, NE2 are obtained, normal condition is identified with 0, and abnormality is with 1
Mark；
AC side chain line state and network side link state are 0 under original state.The network side of specified NE1 and NE2 is preferred
Link, specific mode are as follows: specified node priority NE1 > NE2 > NE3, network side preferred link is with two end node binary group end to end
Mark；Then the network side preferred link of NE1 is NE1-NE3, and the network side preferred link of NE2 is NE2-NE3, naturally it is also possible to straight
Connect Configuration network side preferred link.
It is shown in Figure 1, it is known that the pretection switch triple of NE1 be<0,0, NE1-NE3>, the pretection switch ternary of NE2
Group for<0,0, NE2-NE3>, since the priority of NE1-NE3 is higher than NE2-NE3, the pretection switch ternary of highest priority
The corresponding interlink node of group is NE1.
It is host node that MC-LAG, which elects NE1, and it is Active (activation) that NE1-CE1 (primary AC sidelinks), which are arranged, in NE1, and is led to
The network side link state for accusing NE1-NE3 is 0；It is slave node that MC-LAG, which elects NE2, and NE2-CE1 (spare AC side chain is arranged in NE2
Road) it is Standby (obstruction), and the network side link state for noticing NE2-NE3 is 1.
NE3 is not dual homed node, then it is assumed that the AC sidelinks (bit identification in Fig. 1) of NE3 are constantly in Active state, lead to
The network side link state for accusing NE3-NE1 and NE3-NE2 is 0；Because the network side link state at the both ends NE1-NE3 is 0,
So selecting NE1-NE3 for primary network side link, the network side link state at the both ends NE2-NE3 is respectively 0 and 1, then selects
NE2-NE3 is backup network sidelinks.
Shown in Figure 1, the bidirectional joint corresponding with link in figure identifies the W-E (West- from CE1 to NE3 respectively
East, west is eastwards) directional flow, and the E-W directional flow from NE3 to CE1, the operating mode of primary network sidelinks are W,
The protected mode of backup network sidelinks is W, and bracket (X) is expressed as the priority of network sidelinks, and 0 priority is higher than 1, net
The priority of network sidelinks be set as 0 or 1 depend on the side AC forwarding state, the priority of only network side both link ends is all 0
When, network sidelinks are just active, and the working condition of the network sidelinks in direction is only identified out in Fig. 1.
Shown in Figure 2, when AC sidelinks failure, such as CE1-NE1 link failure, NE1 detects failure, and protection is fallen
Change triple be revised as<1,0, NE1-NE3>, after NE1 and NE2 striding equipment are negotiated, determine the excellent of the pretection switch triple of NE2
First grade highest.
According to the corresponding interlink node of pretection switch triple of highest priority, the protection for carrying out the side AC and network side is fallen
It changes:
Shown in Figure 2, it is host node that MC-LAG, which elects NE2, and NE2 setting NE2-CE1 (primary AC sidelinks) is
Active, and the network side link state for noticing NE2-NE3 is 0；It is slave node that MC-LAG, which elects NE1, and NE1-CE1 is arranged in NE1
(spare AC sidelinks) are Standby, and the network side link state for noticing NE1-NE3 is 1.The net at the both ends NE2-NE3 at this time
Network side chain line state is 0, so select NE2-NE3 for primary network side link, the network side link state at the both ends NE1-NE3
Respectively 0 and 1, then select NE2-NE3 for backup network sidelinks.
Shown in Figure 3, when network side link failure, such as NE1-NE3 failure, NE1 detects NE1-NE3 failure, will
Pretection switch triple is revised as<0,1, NE1-NE3>, it, can without other since the network sidelinks of NE1 only have one
Network sidelinks, so can be set to empty or retain by the NE1-NE3 in triple, no matter which kind of mode be will not influence
Follow-up process.After NE1 and NE2 striding equipment are negotiated, the highest priority of the pretection switch triple of NE2 is determined.According to priority
The corresponding interlink node of highest pretection switch triple, carries out the pretection switch of the side AC and network side, detailed process with it is above-mentioned
It is identical.
It is shown in Figure 4, work as node failure, such as NE1 failure, NE2 detects peer failure, according to the guarantor of highest priority
The corresponding interlink node of protective switching triple, carries out the pretection switch of the side AC and network side, and detailed process is same as described above.
Other links and/or node failure or link and/or node restore from malfunction, still according to above-mentioned side
Formula carries out the pretection switch of the side AC and network side according to the corresponding interlink node of pretection switch triple of highest priority.
Embodiment six: shown in Figure 5, application scenarios are configuration from CE1 dual homed connection NE1 and NE2, and NE1 and NE2 pass through
MC-LAG and CE1 establishes the LAG protection (generting machanism that the priority of MC-LAG uses scene one to propose) of LACP；CE2 dual homed
Connection NE3 and NE4, NE3 and NE4 is protected by the LAG that MC-LAG and CE2 establish LACP.
It is shown in Figure 5, because to other nodes, i.e., each the MC-LAG node of the scene passes through two redundancy PW dual homeds
There are 2 network sidelinks (such as NE1-NE3, NE1-NE4) for interlink node；Therefore there are 2 groups of pretection switch ternarys for the scene
Group.
Grouping under the scene transmit cross-domain guard method the following steps are included:
The AC side chain line state of NE1 to NE4 and network side link state are 0 under original state.Specified NE1, NE2, NE3
With the network side preferred link of NE4, specific mode are as follows: specified node priority NE1 > NE2 > NE3 > NE4, i.e., according to the direction W-E
With the sequence of E-W, the network side preferred link of NE1 is NE1-NE3, NE3-NE1；The network side preferred link of NE2 is NE2-
NE3, NE3-NE2；The network side preferred link of NE3 is NE1-NE3, and the network side preferred link of NE3-NE1, NE4 are NE1-
NE4, NE4-NE1.
It is shown in Figure 5, it is known that the pretection switch triple of NE1 to NE4 is followed successively by<0,0, NE1-NE3>,<0,0, NE2-
NE3>,<0,0, NE1-NE3>and<0,0, NE1-NE4>；Since NE1-NE3 priority is higher than NE2-NE3 and NE1-NE4,
The corresponding interlink node of pretection switch triple of highest priority is NE1 and NE3.
It is host node that MC-LAG, which elects NE1, and it is Active that NE1-CE1 (primary AC sidelinks), which are arranged, in NE1, and notices NE1-
The network side link state of NE3 is 0；It is slave node that MC-LAG, which elects NE2, and NE2 setting NE2-CE1 (spare AC sidelinks) is
Standby, and the network side link state for noticing NE2-NE3 is 1.
Shown in Figure 5, it is host node that MC-LAG, which elects NE3, and NE3 setting NE3-CE2 (primary AC sidelinks) is
Active, and the network side link state for noticing NE1-NE3 is 0；It is slave node that MC-LAG, which elects NE4, and NE4-CE2 is arranged in NE4
(spare AC sidelinks) are Standby, and the network side link state for noticing NE1-NE4 is 1.
It is shown in Figure 5, because the network side link state at the both ends NE1-NE3 is the primary net of 0, NE1 and NE3
Network sidelinks are NE1-NE3, other both ends unevenness are that 0 link is then the backup network sidelinks of respective nodes.
Shown in Figure 6, when AC sidelinks failure, such as CE1-NE1 link failure, NE1 detects failure, and protection is fallen
Change triple be revised as<1,0, NE1-NE3>, after NE1 and NE2 striding equipment are negotiated, determine the excellent of the pretection switch triple of NE2
First grade highest.
According to the corresponding interlink node of pretection switch triple of highest priority, the protection for carrying out the side AC and network side is fallen
It changes:
Shown in Figure 6, it is host node that MC-LAG, which elects NE2, and NE2 setting NE2-CE1 (primary AC sidelinks) is
Active, and the network side link state for noticing NE2-NE3 is 0；It is slave node that MC-LAG, which elects NE1, and NE1-CE1 is arranged in NE1
(spare AC sidelinks) are Standby, and the network side link state for noticing NE1-NE3, NE1-NE4 is 1.NE2- at this time
The network side link state at the both ends NE3 is 0, so selecting NE2-NE3 for primary network side link.
Shown in Figure 7, when network side single link failure, such as NE1-NE3 failure, NE1 and NE3 can be detected
NE1-NE3 failure, pretection switch triple is revised as<0,0, NE1-NE4 by NE1>, pretection switch triple is revised as by NE3<
0,0, NE2-NE3 >.After NE1 and NE2 striding equipment are negotiated, the highest priority of the pretection switch triple of NE1 is determined；NE3 with
After NE4 striding equipment is negotiated, the highest priority of the pretection switch triple of NE4 is determined.According to the pretection switch of highest priority
The corresponding interlink node of triple, carries out the pretection switch of the side AC and network side, and detailed process is same as described above.
It is shown in Figure 8, when 2 link failures of network side, such as NE1-NE3, NE1-NE4 failure, NE1, NE3 and NE4
It can detect failure.Due to the equal failure of all-network sidelinks of NE1, pretection switch triple is revised as < 0 by NE1,
1, NE1-NE3 >；Pretection switch triple is revised as<0,0, NE2-NE3 by NE3>, pretection switch triple is revised as by NE4<
0,0, NE2-NE4 >.After NE1 and NE2 striding equipment are negotiated, the highest priority of the pretection switch triple of NE2 is determined；NE3 with
After NE4 striding equipment is negotiated, the highest priority of the pretection switch triple of NE3 is determined.According to the pretection switch of highest priority
The corresponding interlink node of triple, carries out the pretection switch of the side AC and network side, and detailed process is same as described above.
Shown in Figure 9, when 3 link failures of network side, such as NE1-NE3, NE1-NE4, NE2-NE3 failure, NE1 is extremely
NE4 can detect failure.Pretection switch triple is revised as<0,1, NE1-NE3 by NE1>；NE2 is by pretection switch triple
It is revised as<0,0, NE2-NE4>；Pretection switch triple is revised as<0,1, NE1-NE3 by NE3>, NE4 is by pretection switch ternary
Group is revised as<0,0, NE2-NE4>.After NE1 and NE2 striding equipment are negotiated, the priority of pretection switch triple of NE2 is determined most
It is high；After NE3 and NE4 striding equipment are negotiated, the highest priority of the pretection switch triple of NE4 is determined.According to highest priority
The corresponding interlink node of pretection switch triple, carries out the pretection switch of the side AC and network side, and detailed process is same as described above.
Shown in Figure 10, for node failure, such as NE1 failure, NE2 to NE4 can detect failure.The protection of NE2
It is constant to switch triple, as<0,0, NE2-NE3>；Pretection switch triple is revised as<0,0, NE2-NE3 by NE3>, NE4 will
Pretection switch triple is revised as<0,0, NE2-NE4>.After NE1 and NE2 striding equipment are negotiated, the pretection switch ternary of NE2 is determined
The highest priority of group；After NE3 and NE4 striding equipment are negotiated, the highest priority of the pretection switch triple of NE3 is determined.According to
The corresponding interlink node of pretection switch triple of highest priority carries out the pretection switch of the side AC and network side, detailed process
It is same as described above.
Cross-domain protection system, including pretection switch triple creation module, protection are transmitted in grouping in the embodiment of the present invention
Switch triple election module and pretection switch module.
Pretection switch triple creation module is used for:
1, on each interlink node of MC-LAG, by the AC side chain line state of the interlink node, network side link state,
And network side preferred link, association form pretection switch triple；AC side chain line state and network side link state include
Normal condition and abnormality；AC side chain line state and network side link state are initially normal condition, the preferred chain of network side
Road preassigns.
It 2, is abnormality by AC sidelinks status modifier when monitoring that AC sidelinks break down；Monitor network side
When link breaks down, network side link state is revised as abnormality and corresponding modification network side preferred link.
Pretection switch triple election module is used for: in the pretection switch triple of same MC-LAG, being elected preferential
The highest pretection switch triple of grade；Specific workflow includes: to be positive in AC side chain line state and network side link state
In the pretection switch triple of the interlink node of normal state, the pretection switch three of the highest priority of network side preferred link is chosen
Tuple, the pretection switch triple as the highest priority elected.
Pretection switch module is used for: according to the corresponding interlink node of pretection switch triple of highest priority, carrying out AC
The pretection switch of side and network side；Specific workflow includes: to select the pretection switch triple of highest priority corresponding mutually
Interlink point is host node, selects the AC sidelinks of host node for primary AC sidelinks, selects the network side preferred link of host node
For primary network side link.
It should be understood that system provided in an embodiment of the present invention is when carrying out intermodule communication, only with above-mentioned each function
The division progress of module can according to need and for example, in practical application by above-mentioned function distribution by different function moulds
Block is completed, i.e., the internal structure of system is divided into different functional modules, to complete all or part of function described above
Energy.
Further, the present invention is not limited to the above-described embodiments, for those skilled in the art,
Without departing from the principles of the invention, several improvements and modifications can also be made, these improvements and modifications are also considered as the present invention
Protection scope within.The content being not described in detail in this specification belongs to existing skill well known to professional and technical personnel in the field
Art.
Claims (10)
1. cross-domain guard method is transmitted in a kind of grouping, which is characterized in that method includes the following steps: mutual in each of MC-LAG
On interlink point, by AC side chain line state, network side link state and the network side preferred link of the interlink node, it is associated with shape
At pretection switch triple；AC side chain line state and network side link state include normal condition and abnormality；It is same
After all interlink nodes of MC-LAG elect the pretection switch triple of highest priority, fallen according to the protection of highest priority
The corresponding interlink node of triple is changed, the pretection switch of the side AC and network side is carried out.
2. cross-domain guard method is transmitted in grouping as described in claim 1, it is characterised in that: the AC side chain line state, network
The acquisition modes of side chain line state and network side preferred link include: that AC side chain line state and network side link state are first
Begin to be normal condition, network side preferred link preassigns.
3. cross-domain guard method is transmitted in grouping as described in claim 1, which is characterized in that this method is further comprising the steps of:
It is abnormality by the AC sidelinks status modifier of the node when interlink node monitors that AC sidelinks break down；Mutually
When interlink point monitors that network sidelinks break down, the network side link state of the node is revised as abnormality and right
Network side preferred link should be modified.
4. cross-domain guard method is transmitted in grouping as described in claim 1, it is characterised in that: the same MC-LAG's is all mutual
Interlink point elects the pretection switch triple of highest priority, comprising the following steps: in AC side chain line state and network side chain
Line state is to choose the highest priority of network side preferred link in the pretection switch triple of the interlink node of normal condition
Pretection switch triple, the pretection switch triple as the highest priority elected.
5. as cross-domain guard method is transmitted in the described in any item groupings of Claims 1-4, it is characterised in that: the basis is preferential
The corresponding interlink node of the highest pretection switch triple of grade, carries out the pretection switch of the side AC and network side, comprising the following steps:
The corresponding interlink node of pretection switch triple for selecting highest priority is host node, based on the AC sidelinks for selecting host node
With AC sidelinks, select the network side preferred link of host node for primary network side link.
6. cross-domain protection system is transmitted in a kind of grouping, it is characterised in that: the system includes pretection switch triple creation module, protects
Protective switching triple elects module and pretection switch module；
Pretection switch triple creation module is used for: in each interlink node of MC-LAG, by the AC side chain of the interlink node
Line state, network side link state and network side preferred link, association form pretection switch triple；AC side chain line state
It include normal condition and abnormality with network side link state；
Pretection switch triple election module is used for: in the pretection switch triple of same MC-LAG, electing priority most
High pretection switch triple；
Pretection switch module is used for: according to the corresponding interlink node of pretection switch triple of highest priority, carry out the side AC and
The pretection switch of network side.
7. cross-domain protection system is transmitted in grouping as claimed in claim 6, it is characterised in that: the AC side chain line state, network
The acquisition modes of side chain line state and network side preferred link include: that AC side chain line state and network side link state are first
Begin to be normal condition, network side preferred link preassigns.
8. cross-domain protection system is transmitted in grouping as claimed in claim 6, which is characterized in that the pretection switch triple creation
Module is also used to: being abnormality by AC sidelinks status modifier when monitoring that AC sidelinks break down；Monitor network side
When link breaks down, network side link state is revised as abnormality and corresponding modification network side preferred link.
9. cross-domain protection system is transmitted in grouping as claimed in claim 6, it is characterised in that: the pretection switch triple election
It is the protection of the interlink node of normal condition that the workflow of module, which includes: in AC side chain line state and network side link state,
It switches in triple, chooses the pretection switch triple of the highest priority of network side preferred link, it is preferential as what is elected
The highest pretection switch triple of grade.
10. as cross-domain protection system is transmitted in the described in any item groupings of claim 6 to 9, it is characterised in that: the pretection switch
The workflow of module includes: that select the corresponding interlink node of pretection switch triple of highest priority be host node, selection
The AC sidelinks of host node are primary AC sidelinks, select the network side preferred link of host node for primary network side link.
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