CN106533879A - Data communication network (DCN) irregular domain intercommunicating method and device in packet transport network (PTN) equipment - Google Patents
Data communication network (DCN) irregular domain intercommunicating method and device in packet transport network (PTN) equipment Download PDFInfo
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- CN106533879A CN106533879A CN201510571668.6A CN201510571668A CN106533879A CN 106533879 A CN106533879 A CN 106533879A CN 201510571668 A CN201510571668 A CN 201510571668A CN 106533879 A CN106533879 A CN 106533879A
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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
Abstract
The invention discloses a data communication network (DCN) irregular domain intercommunicating method and device in packet transport network (PTN) equipment, which relates to the PTN equipment management and control planar technology field and comprises the following steps. The common domain adjacently connected between the irregular domain and the backbone domain is defaulted as a bridging domain when the single node of an expanded or area board router (ABR) fails and causes an irregular domain that is not adjacent to the backbone domain in the network. The irregular domain, through the bridging domain, spreads the routing information of the irregular domain to the backboard domain. The backboard domain, through the bridging domain, spreads the global routing information of the backboard domain to the irregular domain. With the invention, irregular domains can be intercommunicated automatically; and the problem can be solved that automatic recovery cannot be accomplished when the single node of an ABR fails and causes the entire domain to be unreachable, therefore, accomplishing the interconnection and intercommunication of DCN of PTN equipment.
Description
Technical field
The present invention relates to PTN (Packet Transport Network, Packet Transport Network) equipment control control
Planar technique field, DCN in more particularly to a kind of PTN device (Data Communication Network,
Data communication network) irregular domain intercommunication method and device.
Background technology
In communication network, in order to manage the network element for being distributed to various places, each big instrument factory commercial city have developed
The DCN of oneself.As the scale of communication network constantly expands, in order to solve interconnecting for equipment room DCN,
Introduce OSPF (Open Shortest Path First, ospf), BGP (Border
Gateway Protocol, Border Gateway Protocol) etc. Routing Protocol be superimposed upon on DCN networks.Patent
CN200510033350.9 is proposed and is expanded the whole network for dividing further constraint route that DCN networks carry out multiple domain
Dissipate, so as to reduce to device resource (CPU (Central Processing Unit, central processing unit), internal memory)
And the consumption of DCN bandwidth.For some Routing Protocols, multiple domain limits common domain when dividing must be with
Key domain is direct-connected, cannot be the routing diffusion of oneself to other areas without the common domain being directly connected with key domain
Domain.Such restriction can allow DCN networks underaction in dilatation, or as the single ABR only deposited in region
During (Area Border Router, Area Border Router) failure, network is unreachable.
The content of the invention
It is an object of the invention to provide in a kind of PTN device the irregular domain intercommunications of DCN method and device, solution
Dilatation of the prior art of having determined is dumb and ABR Single Point of Faliures caused by the inaccessible problem of network.
According to an aspect of the invention, there is provided in a kind of PTN device the irregular domain intercommunications of DCN method,
Comprise the following steps：
When dilatation or Area Border Router ABR single node failures, occur not adjoining with key domain in causing network
Irregular domain when, the common domain that will abut against between the irregular domain and key domain is defaulted as bridged domain；
Irregular domain routing information is diffused into the key domain via the bridged domain by the irregular domain；
Key domain overall situation routing iinformation is diffused into the irregular domain via the bridged domain by the key domain.
Preferably, the common domain that will abut against between the irregular domain and key domain is defaulted as bridged domain bag
Include：
The router node that the bridged domain is adjoined with the irregular domain is upgraded to into bridge plate router
BBR (Bridge Board Router, bridge plate router) node；
The BBR nodes set up the ABR nodes or Autonomous System Boundary Router, AS Boundary Router in the key domain automatically
The of ASBR (Autonomous System Boundary Router, Autonomous System Boundary Router, AS Boundary Router) node
One empty link, and linked to the ABR nodes or the transmission of ASBR nodes comprising the bridge by first void
Connect the irregular domain hello packet of domain ID；
The ABR nodes or ASBR nodes are received and according to the bridge included in the irregular domain hello packet
Connect the second empty link that domain ID automatically sets up the BBR nodes, and linked to described by second void
BBR nodes send key domain hello packet.
Preferably, irregular domain routing information is diffused into the backbone via the bridged domain by the irregular domain
Domain includes：
The BBR nodes in the irregular domain link to the ABR nodes via the first void of the bridged domain or
ASBR nodes send the irregular domain hello packet comprising irregular domain routing information, so as to by irregular domain
Routing iinformation is diffused into the key domain.
Preferably, key domain overall situation routing iinformation is diffused into via the bridged domain and described is not advised by the key domain
Then domain includes：
The ABR nodes in the key domain link to the BBR nodes via the second void of the bridged domain or
ASBR nodes send the key domain hello packet comprising key domain overall situation routing iinformation, so as to will be key domain complete
Office's routing iinformation is diffused into the irregular domain.
Preferably, also include：
When the ABR single node failures are eliminated and the irregular domain is adjacent with the key domain, delete and set up
In the first empty link and the second empty link of the bridged domain.
Preferably, the deletion foundation is linked with the second void in the first empty link of the bridged domain and is included：
Stop linking to the ABR nodes or ASBR sections by first void when the BBR nodes are detected
When point sends irregular domain hello packet, then the described first empty link is deleted；
If within the default waiting time, the ABR nodes or ASBR nodes do not receive the BBR nodes and send
Irregular domain hello packet when, then delete the described second empty link.
According to a further aspect in the invention, there is provided the device of the irregular domain intercommunications of DCN in a kind of PTN device,
Including：
Irregular domain module is produced, for when dilatation or Area Border Router ABR single node failures, causing net
When occurring the irregular domain not adjoined with key domain in network, will abut against between the irregular domain and key domain
Common domain is defaulted as bridged domain；
Irregular domain routing information is diffused into institute for the irregular domain via the bridged domain by interworking module
State key domain, and the key domain via the bridged domain by key domain overall situation routing iinformation be diffused into it is described not
Regular domain.
Preferably, the irregular domain module of the generation includes：
BBR node units are produced, for the router node liter for adjoining the bridged domain with the irregular domain
Level is bridge plate router BBR nodes；
The empty link unit of foundation, for the automatic ABR nodes for setting up the key domain of the BBR nodes or certainly
The first empty link of system border router ASBR nodes is controlled, and is linked to the ABR by first void
Node or ASBR nodes send the irregular domain hello packet comprising the bridged domain ID, and the ABR
Node or ASBR nodes are received and are built according to the bridged domain ID included in the irregular domain hello packet automatically
The second empty link of the BBR nodes is stood, and is linked to BBR nodes transmission bone by second void
Dry domain hello packet.
Preferably, the interworking module includes：
First interworking unit, the BBR nodes for the irregular domain are linked via the first void of the bridged domain
The irregular domain hello packet comprising irregular domain routing information is sent to the ABR nodes or ASBR nodes,
So that irregular domain routing information is diffused into the key domain；
Second interworking unit, for the key domain ABR nodes via the second void of the bridged domain link to
The BBR nodes or ASBR nodes send the key domain hello packet comprising key domain overall situation routing iinformation,
So that key domain overall situation routing iinformation is diffused into the irregular domain.
Preferably, also including deleting empty link unit, for when the ABR single node failures eliminate and it is described not
When regular domain is adjacent with the key domain, the first empty link and the second empty chain set up in the bridged domain is deleted
Connect.
Compared with prior art, the beneficial effects of the present invention is：
The present invention efficiently solves irregular area automatic mutual and corresponds topic, and the Single Point of Faliure for also solving ABR causes
Automatically the problem recovered after whole region is unreachable, has reached interconnecting for the DCN between PTN device.
Description of the drawings
Fig. 1 is the method flow of the irregular domain intercommunications of DCN in a kind of PTN device provided in an embodiment of the present invention
Figure；
Fig. 2 is that the device of the irregular domain intercommunications of DCN in a kind of PTN device provided in an embodiment of the present invention is illustrated
Figure；
Fig. 3 is the schematic diagram that the irregular domain that first embodiment of the invention is provided automatically creates empty link networking；
Fig. 4 is the schematic diagram that the irregular domain that second embodiment of the invention is provided automatically creates empty link networking；
Fig. 5 is the flow chart that irregular domain provided in an embodiment of the present invention automatically creates empty link networking；
Fig. 6 is the flow chart that irregular domain provided in an embodiment of the present invention is automatically deleted empty link networking.
Specific embodiment
Below in conjunction with accompanying drawing to a preferred embodiment of the present invention will be described in detail, it will be appreciated that described below
Preferred embodiment be merely to illustrate and explain the present invention, be not intended to limit the present invention.
Include multiple equipment network element in DCN networks, multiple network elements are carried out point according to receivable network size
Domain, does not illustrate the scene adjoined with key domain in invention, if certain region is not adjoined with key domain, according to OSPF
Agreement specifies that this Partial route cannot learn diffusion each other with other Partial routes.In order to solve this problem,
Increase a kind of bridged domain in the domain of OSPF newly, this bridged domain is connected with key domain, will be directly not adjacent with key domain
The routing iinformation in the irregular domain for connecing is diffused into key domain, while the global routing iinformation obtained from key domain is expanded
It is scattered to this irregular domain.Further, on the basis of the ABR and ASBR of OSPF, the present invention proposes BBR
Concept, so-called BBR refer in bridged domain with irregular domain adjoin router node.Wherein, will not have
The common domain being directly connected with key domain is referred to as irregular domain.
Fig. 1 shows the method stream of the irregular domain intercommunications of DCN in a kind of PTN device provided in an embodiment of the present invention
Cheng Tu, as shown in figure 1, comprise the following steps：
Step S101：When dilatation or Area Border Router ABR single node failures, cause to occur in network with
During the irregular domain that key domain does not adjoin, the common domain acquiescence between the irregular domain and key domain is will abut against
For bridged domain；
Step S102：Irregular domain routing information is diffused into described by the irregular domain via the bridged domain
Key domain；
Step S103：Key domain overall situation routing iinformation is diffused into described by the key domain via the bridged domain
Irregular domain.
Wherein, the common domain that will abut against between the irregular domain and key domain is defaulted as bridged domain bag
Include：The router node that the bridged domain is adjoined with the irregular domain is upgraded to into bridge plate router BBR sections
Point；The BBR nodes set up the ABR nodes or Autonomous System Boundary Router, AS Boundary Router ASBR in the key domain automatically
The empty link of the first of node, and linked to the ABR nodes or ASBR nodes transmission bag by first void
Irregular domain hello packet containing the bridged domain ID；The ABR nodes or ASBR nodes are received and basis
It is second empty that the bridged domain ID that includes in the irregular domain hello packet sets up the BBR nodes automatically
Link, and domain hello packet key to BBR nodes transmission is linked by second void.
Specifically, irregular domain routing information is diffused into the bone via the bridged domain by the irregular domain
Dry domain includes：The BBR nodes in the irregular domain are linked to the ABR via the first void of the bridged domain
Node or ASBR nodes send the irregular domain hello packet comprising irregular domain routing information, so as to will not
Regular domain routing information is diffused into the key domain.The key domain via the bridged domain by key domain the overall situation road
Included to the irregular domain by diffusion of information：The ABR nodes in the key domain are via the second of the bridged domain
Void is linked to the BBR nodes or ASBR nodes and sends the key domain comprising key domain overall situation routing iinformation
Hello packet, to be diffused into the irregular domain by key domain overall situation routing iinformation.
Present invention additionally comprises：When the ABR single node failures are eliminated and the irregular domain and the key domain neighbour
When connecing, the first empty link and the second empty link set up in the bridged domain is deleted.Wherein, described deletion is set up
Include in the first empty link and the second empty link of the bridged domain：Stop passing through when the BBR nodes are detected
When first void is linked to the ABR nodes or ASBR nodes transmission irregular domain hello packet, then delete
Except the described first empty link；If within the default waiting time, the ABR nodes or ASBR nodes do not receive institute
When stating the irregular domain hello packet of BBR nodes transmission, then the described second empty link is deleted.
Fig. 2 shows that the device of the irregular domain intercommunications of DCN in a kind of PTN device provided in an embodiment of the present invention shows
It is intended to, as shown in Fig. 2 including：Produce irregular domain module 201 and interworking module 202.It is described to produce not
Regular domain module 201, for when dilatation or Area Border Router ABR single node failures, going out in causing network
During the irregular domain now not adjoined with key domain, the common domain between the irregular domain and key domain is will abut against
It is defaulted as bridged domain；The interworking module 202, will be irregular via the bridged domain for the irregular domain
Domain routing information is diffused into the key domain, and the key domain via the bridged domain by key domain overall situation road
By diffusion of information to the irregular domain.
Specifically, the irregular domain module 201 that produces includes：BBR node units are produced, for by institute
State the bridged domain router node adjacent with the irregular domain and upgrade to bridge plate router BBR nodes；Set up empty
Link unit, sets up the ABR nodes or autonomous system boundary in the key domain automatically for the BBR nodes
The empty link of the first of router ASBR nodes, and linked to the ABR nodes or ASBR by first void
Node sends the irregular domain hello packet comprising the bridged domain ID, and the ABR nodes or ASBR
Node is received and sets up automatically described according to the bridged domain ID included in the irregular domain hello packet
The empty link of the second of BBR nodes, and linked to BBR nodes transmission backbone domain hello by second void
Message.The interworking module 202 includes：First interworking unit, for the BBR node Jing in the irregular domain
Link to the ABR nodes or ASBR nodes to send from the first void of the bridged domain and route comprising irregular domain
The irregular domain hello packet of information, to be diffused into the key domain by irregular domain routing information；Second
Interworking unit, the ABR nodes for the key domain are linked to the BBR via the second void of the bridged domain
Node or ASBR nodes send the key domain hello packet comprising key domain overall situation routing iinformation, so as to by bone
Dry domain overall situation routing iinformation is diffused into the irregular domain.
Present invention additionally comprises delete empty link unit, for when the ABR single node failures are eliminated and described are not advised
When then domain is adjacent with the key domain, the first empty link and the second empty link set up in the bridged domain is deleted.
Fig. 3 shows that the irregular domain that first embodiment of the invention is provided automatically creates the signal of empty link networking
Figure, as shown in figure 3, region 2 belongs to irregular area, area because the network capacity extension is without adjacent with key domain 0
Node in domain 2 performs as follows：2 multicast hello packet of region, the ospf protocol of normal operation, in area
LSA (Link-State Advertisement, Link State Advertisement) is broadcasted inside domain 2, and B node is received
After the routing update in region 2 is finished, no ABR in region 2 is found, while B node belongs to region 1,
And in region 1, there is ABR, B node is upgraded to into BBR nodes.B node preserves the route of whole network
Information, it therefrom selects an ABR for belonging to region 1, selects node A in this figure, then sets up automatically
To the first empty link of node A, while B node sends hello packet to A nodes, wrap in hello packet
Regional number containing bridged domain, the bridged domain in this are region 1.Node A receives the hello reports of node B
After text, special hello packet is the discovery that, parses the regional number of bridged domain, according in hello packet
The regional number of bridged domain automatically set up the second empty link of node B, while also sending hello to node B
Message.Empty link between node A and node B it has been established that the OSPF that can subsequently carry out standard consults,
Treat that negotiation is finished, node B upgrades to ABR, such region 2 is reachable for whole network.
Fig. 4 shows that the irregular domain that second embodiment of the invention is provided automatically creates the signal of empty link networking
Figure, as shown in figure 4, have three domains, region 1 and region 2 all adjacent with key domain 0 in whole ospf network
Connect, node A and node B is ABR, and node C is adjoined respectively at region 1 and region 2, in normal condition
Under, all it is normal ospf area, if node B breaks down and node B is 2 unique ABR of region,
Then region 2 is then changed into irregular area, is isolated by whole network.Node so in this time domain 2 is held
Row following steps：After node B failures, hello keep Alive Packets time-out can broadcast the renewal of LSA in region 2
Message；Node C receives LSA fresh informations, perceives region 2 and has changed into irregular area, this region
In no ABR, and in region 1, also there is ABR, then node C is upgraded to BBR nodes；It is upgraded to the node of BBR
C is automatically created to the empty link of ABR nodes i.e. node A, while sending request sets up the privately owned of empty link
Message, incidentally the region ID (being region 1 in this example) of bridged domain and route ID of node C in message；
The domain ID of bridged domain after node A receives request message, is parsed, the empty link of node C is then created to,
Hello to node C is sent simultaneously；The empty link at two ends has built up and finishes, and next can carry out normal
OSPF consults, and treats that negotiation is finished, and node C upgrades to ABR, and region 2 is now considered as adjoining with region 0,
So for region 2, whole network is reachable.
Fig. 5 shows the flow chart that irregular domain provided in an embodiment of the present invention automatically creates empty link networking, such as
Shown in Fig. 5, comprise the following steps：
Step S501：Set up BBR nodes；
If there is ABR or ASBR in the nodal information in the LSA for receiving in one domain, and oneself be not
Key domain, then be defaulted as bridged domain by the domain of oneself.If the node in bridged domain is adjacent with irregular area,
Then this node is considered BBR.
Step S502：BBR nodes are set up automatically and are linked with the empty of ABR；
After BBR is selected, BBR is set up automatically and is linked with the empty of ABR or ASBR.
Step S503：BBR broadcasts privately owned hello packet, the incidentally region of bridged domain in hello packet
ID；
After BBR is automatically set up and linked with the void of ABR or ASBR, while broadcast hello packet, hello
Message unicasts to ABR by this void link, creates empty link institute in the ABR that finally piggybacks of this hello packet
The information (the domain ID of bridged domain) of needs.
Step S504：ABR receives this hello packet, is set up according to bridged domain ID and is linked with the empty of BBR；
ABR or ASBR receives hello packet, and is arrived according to the bridged domain ID foundation in hello packet
The empty link of BBR.
Step S505：Carry out normal OSPF interactions.
After two end nodes all have been built up virtual link, normal OSPF interactions are carried out.I.e. in the void at two ends
After link is set up, key domain will expand to BBR nodes, and irregular domain is reachable with other regions.
Fig. 6 shows the flow chart that irregular domain provided in an embodiment of the present invention is automatically deleted empty link networking, such as
Shown in Fig. 6, need the empty link that will be set up before to delete, comprise the following steps：
Step S601：BBR is detected；
On the basis of second embodiment, after node B failure functional rehabilitations, this time domain 2 is used as unique
The node B of ABR is directly adjacent with key domain.
Step S602：BBR stops linking to ABR transmission hello bags by void, while deleting the empty link of ABR
Stop linking to ABR nodes transmission irregularly by first void when the BBR nodes are detected
During the hello packet of domain, then the described first empty link, the i.e. empty link of BBR to ABR is deleted.
Step S603：ABR detects the hello bags time-out of BBR, deletes the empty link of BBR.
If within the default waiting time, the ABR nodes do not receive the irregular domain that the BBR nodes send
During hello packet, then the described second empty link, the i.e. empty link of ABR to BBR is deleted.
That is, on the basis of Fig. 4, due to the change of network, before non-adjacent with key domain does not advise
Then domain is changed into common domain, and node C perceives node B recoveries, then BBR is automatically deleted the empty link of ABR,
ABR perceives the empty link that empty link down is also automatically deleted BBR.
In sum, the present invention has following technique effect：
The present invention can be corresponded topic with effectively solving irregular area automatic mutual, and the Single Point of Faliure for also solving ABR is led
The problem for causing to recover after whole region is unreachable automatically.
Although being described in detail to the present invention above, the invention is not restricted to this, the art technology
Personnel can carry out various modifications with principle of the invention.Therefore, all modifications made according to the principle of the invention,
All should be understood to fall into protection scope of the present invention.
Claims (10)
1. in a kind of PTN device the irregular domain intercommunications of DCN method, it is characterised in that comprise the following steps：
When dilatation or Area Border Router ABR single node failures, occur not adjoining with key domain in causing network
Irregular domain when, the common domain that will abut against between the irregular domain and key domain is defaulted as bridged domain；
Irregular domain routing information is diffused into the key domain via the bridged domain by the irregular domain；
Key domain overall situation routing iinformation is diffused into the irregular domain via the bridged domain by the key domain；
Wherein, the PTN refers to Packet Transport Network；The DCN refers to data communication network.
2. method according to claim 1, it is characterised in that described to will abut against in the irregular domain
Common domain between key domain is defaulted as bridged domain to be included：
The router node that the bridged domain is adjoined with the irregular domain is upgraded to into bridge plate router BBR sections
Point；
The BBR nodes set up the ABR nodes or Autonomous System Boundary Router, AS Boundary Router in the key domain automatically
The empty link of the first of ASBR nodes, and linked to the ABR nodes or ASBR nodes by first void
Send the irregular domain hello packet comprising the bridged domain ID；
The ABR nodes or ASBR nodes are received and according to the bridge included in the irregular domain hello packet
Connect the second empty link that domain ID automatically sets up the BBR nodes, and linked to described by second void
BBR nodes send key domain hello packet.
3. method according to claim 2, it is characterised in that the irregular domain is via the bridge joint
Irregular domain routing information is diffused into the key domain by domain to be included：
The BBR nodes in the irregular domain link to the ABR nodes via the first void of the bridged domain or
ASBR nodes send the irregular domain hello packet comprising irregular domain routing information, so as to by irregular domain
Routing iinformation is diffused into the key domain.
4. method according to claim 3, it is characterised in that the key domain is via the bridged domain
Key domain overall situation routing iinformation is diffused into the irregular domain includes：
The ABR nodes in the key domain link to the BBR nodes via the second void of the bridged domain or
ASBR nodes send the key domain hello packet comprising key domain overall situation routing iinformation, so as to will be key domain complete
Office's routing iinformation is diffused into the irregular domain.
5. method according to claim 4, it is characterised in that also include：
When the ABR single node failures are eliminated and the irregular domain is adjacent with the key domain, delete and set up
In the first empty link and the second empty link of the bridged domain.
6. method according to claim 5, it is characterised in that the deletion is set up in the bridged domain
The first empty link and the second empty link include：
Stop linking to the ABR nodes or ASBR sections by first void when the BBR nodes are detected
When point sends irregular domain hello packet, then the described first empty link is deleted；
If within the default waiting time, the ABR nodes or ASBR nodes do not receive the BBR nodes and send
Irregular domain hello packet when, then delete the described second empty link.
7. in a kind of PTN device the irregular domain intercommunications of DCN device, it is characterised in that include：
Irregular domain module is produced, for when dilatation or Area Border Router ABR single node failures, causing net
When occurring the irregular domain not adjoined with key domain in network, will abut against between the irregular domain and key domain
Common domain is defaulted as bridged domain；
Irregular domain routing information is diffused into institute for the irregular domain via the bridged domain by interworking module
State key domain, and the key domain via the bridged domain by key domain overall situation routing iinformation be diffused into it is described not
Regular domain.
8. device according to claim 7, it is characterised in that the irregular domain module of the generation includes：
BBR node units are produced, for the router node liter for adjoining the bridged domain with the irregular domain
Level is bridge plate router BBR nodes；
The empty link unit of foundation, for the automatic ABR nodes for setting up the key domain of the BBR nodes or certainly
The first empty link of system border router ASBR nodes is controlled, and is linked to the ABR by first void
Node or ASBR nodes send the irregular domain hello packet comprising the bridged domain ID, and the ABR
Node or ASBR nodes are received and are built according to the bridged domain ID included in the irregular domain hello packet automatically
The second empty link of the BBR nodes is stood, and is linked to BBR nodes transmission bone by second void
Dry domain hello packet.
9. device according to claim 8, it is characterised in that the interworking module includes：
First interworking unit, the BBR nodes for the irregular domain are linked via the first void of the bridged domain
The irregular domain hello packet comprising irregular domain routing information is sent to the ABR nodes or ASBR nodes,
So that irregular domain routing information is diffused into the key domain；
Second interworking unit, for the key domain ABR nodes via the second void of the bridged domain link to
The BBR nodes or ASBR nodes send the key domain hello packet comprising key domain overall situation routing iinformation,
So that key domain overall situation routing iinformation is diffused into the irregular domain.
10. device according to claim 9, it is characterised in that also including empty link unit is deleted, use
In when the ABR single node failures are eliminated and the irregular domain is adjacent with the key domain, delete and set up
The empty link of the first of the bridged domain and the second empty link.
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| CN201510571668.6A CN106533879B (en) | 2015-09-10 | 2015-09-10 | Method and device for DCN irregular domain intercommunication in PTN equipment |
| PCT/CN2016/076877 WO2017041469A1 (en) | 2015-09-10 | 2016-03-21 | Method and apparatus for communicating with irregular domain of dcn in ptn device |
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|---|---|---|---|
| CN201510571668.6A CN106533879B (en) | 2015-09-10 | 2015-09-10 | Method and device for DCN irregular domain intercommunication in PTN equipment |
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| CN109818860A (en) * | 2017-11-20 | 2019-05-28 | 中兴通讯股份有限公司 | Establish method, router and the storage medium of virtual link |
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| WO2017041469A1 (en) | 2017-03-16 |
| CN106533879B (en) | 2020-04-28 |
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