CN105553810A - Method and device for forwarding special line service packet - Google Patents
Method and device for forwarding special line service packet Download PDFInfo
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- CN105553810A CN105553810A CN201510926491.7A CN201510926491A CN105553810A CN 105553810 A CN105553810 A CN 105553810A CN 201510926491 A CN201510926491 A CN 201510926491A CN 105553810 A CN105553810 A CN 105553810A
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- service message
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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]
- H04L12/4645—Details on frame tagging
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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]
- H04L12/4645—Details on frame tagging
- H04L12/465—Details on frame tagging wherein a single frame includes a plurality of VLAN tags
- H04L12/4662—Details on frame tagging wherein a single frame includes a plurality of VLAN tags wherein a VLAN tag represents a service instance, e.g. I-SID in PBB
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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]
- H04L12/4675—Dynamic sharing of VLAN information amongst network nodes
- H04L12/4683—Dynamic sharing of VLAN information amongst network nodes characterized by the protocol used
- H04L12/4687—MVRP [multiple VLAN registration protocol]
Abstract
The embodiment of the present invention provides a method and device for forwarding a special line service packet, relating to the field of communication. The adding or change of the configuration of an existing each IP bearer network is not needed, and the transmission of the special line service packet in a network domain is realized. The method comprises the following that: a first access gateway obtains the special line service packet; a general router is determined to package a GRE tunnel, the source IP address of the GRE tunnel is the IP address of the first access gateway, and the destination IP address of the GRE tunnel is the IP access of a second access gateway; a PW label is obtained; the MPLS packaging is executed, and an MPLS packaging service message is obtained; the GRE packaging of the MPLS packaging service message is executed, and the GRE packaging special line service is obtained; and the GRE packaging special line service is sent the second access gateway through the GRE tunnel. The method and the device are used for transmitting service packets.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of method and the device that forward private line service message.
Background technology
Private line service refers to provides dedicated channel between two points or between multiple spot, is used for transmitting the service message such as speech, data, audio or video of heavy traffic.Private line service is one of main business carried in the network of operator deployment.Usually, using the scope in a city as a network domains, at Internet protocol (the English full name: InternetProtocol in existing network territory, English abbreviation: IP) build multiprotocol label switching (English full name: Multi-ProtocolLabelSwitching in bearer network, English abbreviation: MPLS) VPN (virtual private network) (English full name: VirtualPrivateNetwork, English abbreviation: VPN), for private line service message provides dedicated channel.The configuration of network can become increasingly complex along with the increase of private line service message.
When private line service message needs to carry out cross-domain transmission between the network domains that two or more is different, the mode of OptionA can be adopted, at edge router (the English full name: ProviderEdge of transmitting terminal, English abbreviation: PE) one by one private line service decapsulation is converted to Ethernet message after, encapsulated by the edge router of receiving terminal again and enter MPLSVPN, realize private line service message and transmit in network domains; Or adopt the mode of OptionB or OptionC of network domains intercommunication, adopt Border Gateway Protocol (English full name: BorderGatewayProtocol, English abbreviation: BGP) between heterogeneous networks territory, transmit label, realize private line service message and transmit in network domains.But all there is the intercommunication of heterogeneous networks territory and to get up technical sophistication in two kinds of technology, the problem that the configuration effort amount of each IP bearer network is large, and also configuration can become increasingly complex along with the increase of private line service message.
Summary of the invention
Embodiments of the invention provide a kind of method and the device that forward private line service message, without the need to increasing or change the configuration of existing each IP bearer network, realize private line service message and transmit in network domains.
For achieving the above object, embodiments of the invention adopt following technical scheme:
First aspect, provides a kind of method forwarding private line service message, comprising:
After first IAD gets the object internet protocol address of the described private line service message of private line service message, first interface and forwarding, according to described first interface determination generic route encapsulation gre tunneling, the source IP address of described gre tunneling is the IP address of described first IAD, and the object IP address of described gre tunneling is the IP address of described second IAD;
Described first IAD obtains pseudo-line PW label; Wherein, the PW label being sent to the private line service message of same IAD is different, and the PW label being sent to the private line service message of different IADs can be identical;
Described first IAD performs MPLS encapsulation, obtains MPLS and encapsulates private line service message; Described first IAD encapsulates private line service message to described MPLS and performs GRE encapsulation, obtains GRE and encapsulates private line service message;
Described first IAD sends described GRE by described gre tunneling to described second IAD and encapsulates private line service message.
The method of the forwarding private line service message that above-mentioned first aspect provides, first the gre tunneling between two territories is set up, then, private line service message execution MPLS encapsulation and GRE are encapsulated, obtain GRE and encapsulate private line service message, by the IAD transmission GRE encapsulation private line service message of gre tunneling to opposite end, thus without the need to increasing or change the configuration of existing each IP bearer network, realize private line service message and transmit in network domains.
Second aspect, provides a kind of first IAD, comprising:
Acquiring unit, for obtaining the object internet protocol address of the described private line service message of private line service message, first interface and forwarding, described first interface is the interface of described first IAD obtaining described private line service message, and described object IP address is the address that described private line service message needs the second IAD arrived;
Processing unit, for according to described first interface determination generic route encapsulation gre tunneling, the source IP address of described gre tunneling is the IP address of described first IAD, and the object IP address of described gre tunneling is the IP address of described second IAD;
Described acquiring unit, also for obtaining pseudo-line PW label, described PW label is provided for described second IAD private line service message according to described PW label forwarding;
Described processing unit, also encapsulates for performing multiprotocol label switching MPLS, obtains MPLS and encapsulates private line service message, and described MPLS encapsulates private line service heading and comprises described PW label;
Described processing unit, also perform GRE encapsulation for encapsulating private line service message to described MPLS, obtain GRE and encapsulate private line service message, described GRE encapsulates private line service heading and comprises the source IP address of gre tunneling and the object IP address of gre tunneling;
Transmitting element, encapsulates private line service message for sending described GRE by described gre tunneling to described second IAD.
The first IAD that above-mentioned second aspect provides, first the gre tunneling between two territories is set up, then, private line service message execution MPLS encapsulation and GRE are encapsulated, obtain GRE and encapsulate private line service message, by the IAD transmission GRE encapsulation private line service message of gre tunneling to opposite end, thus without the need to increasing or change the configuration of existing each IP bearer network, realize private line service message and transmit in network domains.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The network diagram of a kind of forwarding service message that Fig. 1 provides for the embodiment of the present invention;
A kind of method flow diagram forwarding private line service message that Fig. 2 provides for the embodiment of the present invention;
The method flow diagram of the another kind forwarding private line service message that Fig. 3 provides for the embodiment of the present invention;
The one first IAD structural representation that Fig. 4 provides for the embodiment of the present invention;
The another kind first IAD structural representation that Fig. 5 provides for the embodiment of the present invention;
The one second IAD structural representation that Fig. 6 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
General principle of the present invention is: set up generic route encapsulation (the English full name: genericroutingencapsulation between the first IAD and the second IAD based on IP bearer network, English abbreviation: GRE) tunnel, namely virtual circuit (the VirtualCircuit between the first IAD and the second IAD, English abbreviation: VC), the private line service message got is carried out the encapsulation of MPLS and GRE by the first IAD, by the gre tunneling between the first IAD and the second IAD, the private line service message after encapsulation is sent to the second IAD.
The invention provides a kind of network diagram of forwarding service message, as shown in Figure 1, the local IP bearer network in A city comprises IAD 1.The local IP bearer network in B city comprises IAD 2.By respective IAD transmission private line service message between the local IP bearer network in A city and the local IP bearer network in B city, simultaneously, IP bearer network also carries private line service message, between the local IP bearer network in A city and the local IP bearer network in B city, transmit private line service message.It should be noted that, the IP address of the pre-configured IAD 2 of IAD 1, so that IAD 1 transmits private line service message to IAD 2.In like manner, the IP address of the pre-configured IAD 1 of IAD 2, so that IAD 2 transmits private line service message to IAD 1.
Embodiment one
The embodiment of the present invention provides a kind of method forwarding private line service message, as shown in Figure 2, comprising:
Step 101, the first IAD obtain the object IP address of private line service message, first interface and forwarding private line service message.
Example, user terminal in the local IP bearer network in A city sends private line service message to the subscriber equipment in the local IP bearer network in B city, first, user terminal in the local IP bearer network in A city needs first private line service message to be sent to IAD 1, now, IAD 1 is the first IAD, and the first IAD has just got private line service message.
First interface is the interface of the first IAD obtaining private line service message.Object IP address is the address that private line service message needs the second IAD arrived.
First IAD access can access first network territory, and the second IAD can access second network territory, and first network territory and second network territory can be same network domains, also can be heterogeneous networks territory.
Step 102, the first IAD are according to first interface determination gre tunneling.
If the first IAD did not set up gre tunneling corresponding to first interface, first IAD sets up the gre tunneling between the first IAD and the second IAD, the source IP address of described gre tunneling is the IP address of described first IAD, and the object IP address of described gre tunneling is the IP address of described second IAD.And the first IAD stores gre tunneling corresponding to first interface, so that after the first IAD receives private line service message from first interface, forward this private line service message from gre tunneling.
If the first IAD set up gre tunneling corresponding to first interface, the first IAD obtained gre tunneling corresponding to this first interface according to first interface.
Tunneling technique (Tunneling) is a kind of mode by using the infrastructure of internet to transmit data between networks.The data of use tunnel transmission can be Frame or the bag of different agreement.Then the Frame of other agreement or bag Reseal are sent by tunnel by tunnel protocol.New frame head provides routing iinformation, to transmit packed data by the Internet.
GRE defines in RFC1701 and RFC1702, it specify a kind of method how removing to encapsulate another kind of network layer protocol with network layer protocol.
Step 103, the first IAD obtain PW label.
First IAD obtains pseudo-line (English full name: prisonerofwar, English abbreviation: PW) label can comprise static acquisition PW label and Dynamic Acquisition PW label.PW label is for identifying different private line service messages.The PW label being sent to the private line service message of same IAD is different, and the PW label being sent to the private line service message of different IADs can be identical.
First IAD can also send a request message to the second IAD, second IAD receives the request message that the first IAD sends, second IAD obtains a PW label from multiple PW labels that this locality prestores, response message is sent to the first IAD, it is the PW label that the first IAD distributes that this response message comprises, i.e. Dynamic Acquisition PW label.
Due to the normally point-to-point business of private line service, if the first IAD sent the private line service message obtained from first interface, then the first IAD stores used PW label, after the first IAD gets private line service message from first interface again, the used PW label that the first IAD can use the first IAD to store.
Step 104, the first IAD perform MPLS encapsulation, obtain MPLS and encapsulate private line service message.
When private line service is ether business, the first IAD directly can perform MPLS encapsulation to getting private line service message, and obtain MPLS and encapsulate private line service message, the heading that MPLS encapsulates private line service message comprises PW label and private line service message.
Especially, when private line service is time division multiplexing (English full name: TimeDivisionMultiplexing, English abbreviation: TDM), asynchronous transfer mode (English full name: AsynchronousTransferMode, English abbreviation: ATM) or ether business time, first IAD needs first to perform unified PWE3 encapsulation to private line service message, obtain PWE3 and encapsulate private line service message, then, private line service message is encapsulated to PWE3 and performs MPLS encapsulation, obtain MPLS and encapsulate private line service message, the heading that MPLS encapsulates private line service message comprises PW label and private line service message.Described PW label is provided for described second IAD private line service message according to described PW label forwarding.
Pseudo wire emulation (the English full name: Pseudo-WireEmulationEdgetoEdge of edge-to-edge, English abbreviation: PWE3) refer at packet switching network (English full name: PacketSwitchedNetwork, English abbreviation: PSN) in imitate the basic act of business and the one two layer service bearing technologies of feature such as asynchronous transfer mode (English full name: AsynchronousTransferMode, English abbreviation: ATM), frame relay, Ethernet, low speed TDM circuit as far as possible truly.
Step 105, the first IAD encapsulate private line service message to MPLS and perform GRE encapsulation, obtain GRE and encapsulate private line service message.
GRE encapsulates private line service message and comprises the source IP address of gre tunneling, the object IP address of gre tunneling and MPLS encapsulation private line service message, the source IP address of gre tunneling is the IP address of the first IAD, and the object IP address of gre tunneling is the IP address of the second IAD.
Protocol type in gre tunneling head is designated PW label, i.e. 0x8847.
Step 106, the first IAD send GRE to the second IAD and encapsulate private line service message.
Further, as shown in Figure 3, the method for described forwarding private line service message that the embodiment of the present invention provides also comprises step 108 to step 110.
Step 107, the second IAD receive the GRE encapsulation private line service message that the first IAD sends.
IP bearer network encapsulates the object IP address of the gre tunneling of the head of private line service message according to GRE, by the gre tunneling between the first IAD and the second IAD, GRE is encapsulated private line service message repeating to the second IAD, second IAD receives the GRE encapsulation private line service message that the first IAD sends, namely the second IAD is after receiving GRE encapsulation private line service message, decapsulation GRE encapsulates private line service message, the object IP address obtaining gre tunneling is the IP address of the second IAD self, and MPLS encapsulates private line service message, perform step 108.
Step 108, the second IAD decapsulation MPLS encapsulate private line service message.
Second IAD decapsulation MPLS encapsulates private line service message, obtains PW label and private line service message.
Especially, if after the second IAD decapsulation MPLS encapsulates private line service message, obtain PWE3 and encapsulate private line service message and PW label, also need decapsulation PWE3 to encapsulate private line service message, obtain private line service message.The decapsulation mode of private line service message is corresponding with its encapsulation.
Step 109, the second IAD forward private line service message.
Transmitted by PW tag queries, transmit the corresponding relation comprising PW label and outgoing interface, the private line service message after utilizing the outgoing interface inquired to send decapsulation.
Example, the first IAD described in the embodiment of the present invention can be the IAD 1 in the local IP bearer network in A city, second IAD can be the IAD 2 in the local IP bearer network in B city, namely establishes the gre tunneling between the IAD 2 in the local IP bearer network in IAD 1 in the local IP bearer network in A city and B city.IAD in the local IP bearer network in A city 1 pair of private line service message performs MPLS encapsulation, obtain MPLS and encapsulate private line service message, perform GRE encapsulation again, after obtaining GRE encapsulation private line service message, send GRE to the IAD 2 in the local IP bearer network in B city again and encapsulate private line service message, after IAD 2 in the local IP bearer network in B city receives GRE encapsulation private line service message, decapsulation GRE encapsulates private line service message, determine that the second object IP address is the IP address of IAD 2 self, IAD 2 again decapsulation MPLS encapsulates private line service message, obtain PW label, the outgoing interface obtaining IAD 2 is transmitted according to PW tag queries, private line service message after utilizing the outgoing interface inquired to send decapsulation.
For the private line service message needing to transmit between different network domains, first the gre tunneling between two network domains is set up, then, private line service message execution MPLS encapsulation and GRE are encapsulated, obtain GRE and encapsulate private line service message, by the IAD transmission GRE encapsulation private line service message of gre tunneling to opposite end, thus without the need to increasing or change the configuration of existing each IP bearer network, realize private line service message and transmit in network domains.
Embodiment two
The embodiment of the present invention provides a kind of first IAD 20, as shown in Figure 4, comprising:
Acquiring unit 201, for obtaining the object internet protocol address of the described private line service message of private line service message, first interface and forwarding, described first interface is the interface of described first IAD obtaining described private line service message, and described object IP address is the address that described private line service message needs the second IAD arrived;
Processing unit 202, for according to described first interface determination generic route encapsulation gre tunneling, the source IP address of described gre tunneling is the IP address of described first IAD, and the object IP address of described gre tunneling is the IP address of described second IAD;
Described acquiring unit 201, also for obtaining pseudo-line PW label, described PW label is provided for described second IAD private line service message according to described PW label forwarding;
Described processing unit 202, also for performing MPLS encapsulation, obtaining MPLS and encapsulating private line service message, described MPLS encapsulates private line service heading and comprises described PW label;
Described processing unit 202, also perform GRE encapsulation for encapsulating private line service message to described MPLS, obtain GRE and encapsulate private line service message, described GRE encapsulates private line service heading and comprises the source IP address of gre tunneling and the object IP address of gre tunneling;
Transmitting element 203, encapsulates private line service message for sending described GRE by described gre tunneling to described second IAD.
For the private line service message needing to transmit between different network domains, first the gre tunneling between two territories is set up, then, private line service message execution MPLS encapsulation and GRE are encapsulated, obtain GRE and encapsulate private line service message, by the IAD transmission GRE encapsulation private line service message of gre tunneling to opposite end, thus without the need to increasing or change the configuration of existing each IP bearer network, realize private line service message and transmit in network domains.
Described processing unit 202, specifically for setting up the generic route encapsulation gre tunneling between described first IAD and the second IAD according to described first interface.
Described acquiring unit 201, specifically for obtaining a PW label from the PW label pond prestored;
Or described transmitting element 203, also for sending a request message to described second IAD;
As shown in Figure 5, described first IAD 20 also comprises:
Receiving element 204, for receiving the response message that described second IAD sends, described response message comprises the PW label of distribution.
When private line service is time division multiplexing tdm business, asynchronous transfer mode ATM or ether business,
Described processing unit 202, the pseudo wire emulation PWE3 also for performing edge-to-edge to described private line service message encapsulates, and obtains PWE3 and encapsulates private line service message.
Described processing unit 202, performs MPLS encapsulation specifically for encapsulating private line service message to described PWE3.
Embodiment three
The embodiment of the present invention provides a kind of second IAD 30, as shown in Figure 6, comprising:
Receiving element 301, the GRE sent for receiving the first IAD encapsulates private line service message;
IP bearer network encapsulates the object IP address of the gre tunneling of the head of private line service message according to GRE, by the gre tunneling between the first IAD and the second IAD, GRE is encapsulated private line service message repeating to the second IAD, second IAD receives the GRE encapsulation private line service message that the first IAD sends, namely the second IAD is after receiving GRE encapsulation private line service message, decapsulation GRE encapsulates private line service message, the object IP address obtaining gre tunneling is the IP address of the second IAD self, and MPLS encapsulates private line service message.
Processing unit 302, encapsulates private line service message for decapsulation MPLS.
Second IAD decapsulation MPLS encapsulates private line service message, obtains PW label and private line service message.
Especially, if after the second IAD decapsulation MPLS encapsulates private line service message, obtain PWE3 and encapsulate private line service message and PW label, also need decapsulation PWE3 to encapsulate private line service message, obtain private line service message.The decapsulation mode of private line service message is corresponding with its encapsulation.
Transmitting element 303, for forwarding private line service message.
Transmitted by PW tag queries, transmit the corresponding relation comprising PW label and outgoing interface, the private line service message after utilizing the outgoing interface inquired to send decapsulation.
Those skilled in the art can be well understood to, and for convenience and simplicity of description, the device of foregoing description and the specific works process of unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (10)
1. forward a method for private line service message, it is characterized in that, comprising:
First IAD obtains the object internet protocol address of private line service message, first interface and the described private line service message of forwarding, described first interface is the interface of described first IAD obtaining described private line service message, and described object IP address is the address that described private line service message needs the second IAD arrived;
Described first IAD is according to described first interface determination generic route encapsulation gre tunneling, and the source IP address of described gre tunneling is the IP address of described first IAD, and the object IP address of described gre tunneling is the IP address of described second IAD;
Described first IAD obtains pseudo-line PW label, and described PW label is provided for described second IAD private line service message according to described PW label forwarding;
Described first IAD performs multiprotocol label switching MPLS encapsulation, obtains MPLS and encapsulates private line service message, and described MPLS encapsulates private line service heading and comprises described PW label;
Described first IAD encapsulates private line service message to described MPLS and performs GRE encapsulation, obtains GRE and encapsulates private line service message, and described GRE encapsulates private line service heading and comprises the source IP address of gre tunneling and the object IP address of gre tunneling;
Described first IAD sends described GRE by described gre tunneling to described second IAD and encapsulates private line service message.
2. method according to claim 1, is characterized in that, described first IAD comprises according to described first interface determination generic route encapsulation gre tunneling:
Described first IAD sets up the gre tunneling between described first IAD and the second IAD according to described first interface.
3. method according to claim 1, is characterized in that, described first IAD obtains pseudo-line PW label and comprises:
Described first IAD obtains a PW label from the PW label pond prestored;
Or described first IAD sends a request message to described second IAD;
Described first IAD receives the response message that described second IAD sends, and described response message comprises the PW label of distribution.
4. method according to claim 1, is characterized in that, when private line service is time division multiplexing tdm business, asynchronous transfer mode ATM or ether business, before described first IAD performs MPLS encapsulation, described method also comprises:
Described first IAD encapsulates the pseudo wire emulation PWE3 that described private line service message performs edge-to-edge, obtains PWE3 and encapsulates private line service message.
5. method according to claim 4, is characterized in that, described first IAD performs MPLS encapsulation and comprises:
Described first IAD encapsulates private line service message to described PWE3 and performs MPLS encapsulation.
6. first IAD, is characterized in that, comprising:
Acquiring unit, for obtaining the object internet protocol address of the described private line service message of private line service message, first interface and forwarding, described first interface is the interface of described first IAD obtaining described private line service message, and described object IP address is the address that described private line service message needs the second IAD arrived;
Processing unit, for according to described first interface determination generic route encapsulation gre tunneling, the source IP address of described gre tunneling is the IP address of described first IAD, and the object IP address of described gre tunneling is the IP address of described second IAD;
Described acquiring unit, also for obtaining pseudo-line PW label, described PW label is provided for described second IAD private line service message according to described PW label forwarding;
Described processing unit, also encapsulates for performing multiprotocol label switching MPLS, obtains MPLS and encapsulates private line service message, and described MPLS encapsulates private line service heading and comprises described PW label;
Described processing unit, also perform GRE encapsulation for encapsulating private line service message to described MPLS, obtain GRE and encapsulate private line service message, described GRE encapsulates private line service heading and comprises the source IP address of gre tunneling and the object IP address of gre tunneling;
Transmitting element, encapsulates private line service message for sending described GRE by described gre tunneling to described second IAD.
7. the first IAD according to claim 6, is characterized in that,
Described processing unit, specifically for setting up the gre tunneling between described first IAD and the second IAD according to described first interface.
8. the first IAD according to claim 6, is characterized in that,
Described acquiring unit, specifically for obtaining a PW label from the PW label pond prestored;
Or described transmitting element, also for sending a request message to described second IAD;
Described first IAD also comprises:
Receiving element, for receiving the response message that described second IAD sends, described response message comprises the PW label of distribution.
9. the first IAD according to claim 6, is characterized in that, when private line service is time division multiplexing tdm business, asynchronous transfer mode ATM or ether business,
Described processing unit, the pseudo wire emulation PWE3 also for performing edge-to-edge to described private line service message encapsulates, and obtains PWE3 and encapsulates private line service message.
10. the first IAD according to claim 9, is characterized in that,
Described processing unit, performs MPLS encapsulation specifically for encapsulating private line service message to described PWE3.
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| CN106789657A (en) * | 2016-12-23 | 2017-05-31 | 北京格林伟迪科技股份有限公司 | A kind of message forwarding method and device |
| CN107888398A (en) * | 2016-09-29 | 2018-04-06 | 中国联合网络通信集团有限公司 | A kind of service bearer system and control method |
| CN108075950A (en) * | 2017-12-13 | 2018-05-25 | 安徽皖通邮电股份有限公司 | A kind of method of packet access network end-to-end path detection |
| CN112383475A (en) * | 2020-12-01 | 2021-02-19 | 安徽信息工程学院 | Cross-domain video data forwarding method |
| CN115150314A (en) * | 2021-03-31 | 2022-10-04 | 腾讯科技（深圳）有限公司 | Cross-network-domain data packet transmission method and device, storage medium and electronic equipment |
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