CN1791056A - Network transmission method for multi-protocol label exchange VPN - Google Patents
Network transmission method for multi-protocol label exchange VPN Download PDFInfo
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- CN1791056A CN1791056A CNA2004101040943A CN200410104094A CN1791056A CN 1791056 A CN1791056 A CN 1791056A CN A2004101040943 A CNA2004101040943 A CN A2004101040943A CN 200410104094 A CN200410104094 A CN 200410104094A CN 1791056 A CN1791056 A CN 1791056A
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Abstract
The invention relates to a network transmission method for MPLSVPN in digital information transmission comprises: using control plane contained in MPLSVPN as network user and sending its information message by the network; the MPLSVPN allocates VC label and a single-enjoy LSP channel to control plane to build opposite connection between VC and LSP; the said control plane shares LSP channel with other user and allocates VC label according to different module or application. This invention is simple an flexible.
Description
Technical field
The present invention relates to digital information transmission, relate in particular to a kind of network transfer method of MPLS VPN.
Background technology
In multiservice transport platform MSTP (Multi-Service Transport Platform), more and more adopted MPLS VPN MPLS VPN technologies (MPLS:Multi-Protocol Label Switching; VPN:Virtual Private Network).MPLS VPN can be divided into two layers of (L2) MPLS VPN and three layers of (L3) MPLS VPN two class.Current, what support was used in comparative maturity, acquisition at most is the Martini scheme.Defined the signaling mode of two layers encapsulation and two layers of transmission based on the L2VPNMartini solution of MPLS, it introduces the notion of virtual connections VC (Virtual Connect) mark, and the VC mark carries out multiplexing in the tunnel that is made up by MPLS LSP by the mode of MPLS labeled slots.The mode of setting up in label switching path LSP (LabelSwitched Path) tunnel has multiple, can use signaling protocols such as LDP mode or RSVP/CR-LDP.Introduce the principle of this scheme below, MPLS L2VPN is exactly the Layer 2 data of transparent transmission user on the MPLS network.From user's angle, this MPLS network is exactly one two layers a switching network, by this network, can set up two layers connection between different websites.
Utilize labeled slots to realize the transparent transmission of user's message in the MPLS network: outer layer label (being called tunnel TUNNEL label) is used for message is delivered to another Provider Edge PE node from a Provider Edge PE node (PE:Provider Edge), vpn label, be the difference connection that the VC label is used for distinguishing different VPN, which client's edge C E terminal (CE:CustomerEdge) decision passes to message to recipient's Provider Edge PE node according to the VC label.As shown in Figure 1, Provider Edge PE1 node, Provider Edge PE2 node and P equipment (P equipment: core forwarding node equipment) form a MPLS network domains, set up a LSP between Provider Edge PE1 node and the Provider Edge PE2, for setting up VC, the user is connected between Provider Edge PE node and the client's edge C E terminal, set up client's edge C E1 terminal and the client's edge C E2 terminal that VC is connected with Provider Edge PE1 node and offer user a and user b respectively, set up client's edge C E3 terminal and the client's edge C E4 terminal that VC is connected with Provider Edge PE2 node and offer user a and user b respectively, user a just can transmit by same lsp tunnel with the different VC messages of user b like this, in repeating process, illustrate the labeled slots variation of message with the message transmissions of user a, as shown in Figure 2, its pass order is followed successively by: client's edge C E1 terminal, Provider Edge PE1 node, P equipment, Provider Edge PE2 node, client's edge C E3 terminal, in the associated mark stack:
L2 PDU is a link layer message;
T is the TUNNEL label;
V is the VC label;
T ' is the TUNNEL label, and in repeating process, outer layer label is replaced according to agreement.
MPLS VPN is applicable to the vpn service that realization has higher requirements for service quality, grade of service division and network resource utilization, network reliability.Development along with ASON, on existing optical transfer network, increased one deck control plane, in Provider Edge PE node or MSTP equipment, then be divided into control plane and datum plane, user's's (being client's edge C E terminal) message directly transmits between Provider Edge PE node by datum plane, for the control plane transmission of Information, can utilize as the CPU of control plane and the interface of data processing module, transmit by the data forwarding plane.This layer control plane not only is used for serving and bottom-layer network being controlled for the user connects, provides, and can support different technical schemes and different business demands.
For the MPLS VPN that comprises control plane, the information on relevant controlling plane, as Link State Pass Through LPT (Link Pass Through) control frame, be in the MSTP network, to transmit by the form that Ethernet encapsulates, under this transmission means, message has used the Ethernet data newspaper form of definition in 802.3, and is as shown in table 1:
| Destination address | Source address | Type | Command code | Fill | Check byte |
Table 1
Wherein:
Destination address (6 byte)=00-00-54-53-45-44;
Source address (6 byte)=6f-4d-3f-d0-b0-00;
Type field (2 byte): 0xE140---represent that this frame is the LPT control frame;
As seen, discerning the mode of this frame is discerned by ethernet packet header, adopt this mode, the control plane of transmitting terminal (being the INGRESS node) is encapsulated in Ethernet to the information of LPT by CPU and wraps, stamp fixed MAC address, and type of message, the interface by CPU and data processing module goes to datum plane then, is sent to corresponding receiving terminal (being the EGRESS node) through datum plane.Whether the datum plane of receiving terminal then discerns the LPT frame according to destination address, source address and type field, if the LPT frame then goes to it upper strata control plane and handles.
Control plane employing Ethernet is encapsulated in the MSTP network and transmits, and has some following shortcomings:
1, at first need for this application to MAC Address management organization application fixed MAC address, can not in time satisfy flexible and changeable application.
2, adopting fixedly Ethernet encapsulation format, is the mode of a kind of point to multiple spot, directly reports after the datum plane identification of receiving equipment, and the informational needs of this website is judged by control plane, choice, therefore, the workload of increasing control plane.
3, the MAC Address of datum plane processing and identification message is 48bits, and control plane management information message comprises the type of message field toward contact, and this also needs datum plane to handle, so datum plane is to the judgment processing flow process complexity of control information.
If 4 increase module or application (as newly-increased management function), then need MAC Address of new registration, relative data panel data and control plane, also need to increase corresponding handling process, the datum plane of existing equipment solidifies basically, it is very difficult to revise, and is not easy to upgrade expanding.
Summary of the invention
The object of the present invention is to provide a kind of network transfer method of MPLS VPN simple to operate, big to overcome in the prior art control plane workload, handling process complexity, upgrade expanding inconvenience.
The network transfer method of MPLS VPN of the present invention is: in comprising the MPLS VPN of control plane, with control plane as the network user, described MPLS VPN is that control plane distributes virtual connections VC label, set up corresponding virtual connections VC and be connected with the establishment label switching path LSP, the infomational message of control plane is by this Network Transmission;
It adopts following steps:
The label switching path LSP that A, MPLS VPN are set up between virtual connections VC and the establishment Provider Edge PE node at Provider Edge PE node connects;
Behind B, the Provider Edge PE node control plane generation message it is reached datum plane as transmitting terminal;
C, datum plane are to the message respective handling;
D, message pass through the label switching path LSP tunnel transmission to the Provider Edge PE node as receiving terminal;
The datum plane of the Provider Edge PE node of E, described receiving terminal to the message respective handling after, handle message by control plane.
In the described steps A, control plane is set up virtual connections VC with corresponding Provider Edge PE node; The newly-built strip label switching path lsp tunnel of MPLS VPN or specify an already present label switching path LSP tunnel as the information transfer channel between the control plane of different Provider Edge PE nodes;
Among the described step B, described control plane inserts datum plane by the cpu i/f of Provider Edge PE node with message; Among the described step C, described datum plane is determined virtual connections VC, encapsulation virtual connections VC label, encapsulation tunnel TUNNEL label to message according to the forwarding equivalence class FEC that has been provided with, according to virtual connections VC label and tunnel TUNNEL label forwarding message;
Among the described step B, described control plane has the VC label by the cpu i/f of Provider Edge PE node with the message that message inserts datum plane and generation; Among the described step C, described datum plane is to this message encapsulation tunnel TUNNEL label, according to virtual connections VC label and tunnel TUNNEL label forwarding message;
Among the described step B, described control plane has virtual connections VC label and tunnel TUNNEL label by the cpu i/f of Provider Edge PE node with the message that message inserts datum plane and generation; Among the described step C, described datum plane is according to virtual connections VC label and tunnel TUNNEL label forwarding message;
Among the described step B, control plane can be according to the forwarding equivalence class FEC that has been provided with to information encapsulation virtual connections VC or tunnel TUNNEL label.
In the described step e, the datum plane of the Provider Edge PE node of described receiving terminal is then to be sent to control plane to handle according to tunnel TUNNEL label or the virtual connections VC tag recognition message of control plane whether.
Described datum plane also message is separated tunnel TUNNEL encapsulation or separate tunnel TUNNEL encapsulation and virtual connections VC encapsulation or not decapsulation after, be sent to control plane;
Described MPLS VPN is according to the disparate modules in the control plane or use the corresponding virtual connections VC label of distribution.
Beneficial effect of the present invention is, in the present invention, with control plane as the network user, by TUNNEL or VC are provided for control plane sign, control plane information can be transmitted in the MPLS network, the infomational message of control plane is able to by this Network Transmission, and concrete advantage of the present invention is as follows:
1, the handling process of the message of control plane and message handling process to user's (client's edge C E terminal) are belonged to normalized processing and basically identical, do not have the extra work amount to increase for control plane.
2, the present invention adopts the MPLS label, and is simple to operate, flexible in the module of control plane or use and only need set up or delete corresponding connection when increasing or reducing and get final product because the space of label is relatively-stationary, helps upgrade expanding.
3, in the prior art, the MAC Address of datum plane processing and identification message is 48bits, and the present invention adopts the MPLS label, only needs to handle the information of 20bits, handles easy.
4, the data of control plane are transmitted in network and can be obtained more reliable QOS (Quality OfService) assurance.
In a word, the present invention is easy and simple to handle, flexible, and is practical.
Description of drawings
Fig. 1 is the structural representation of MPLS VPN in the prior art;
Fig. 2 is the message transmission schematic diagram of MPLS VPN in the prior art;
Fig. 3 is the embodiment of the invention 1 structural representation;
Fig. 4 is the embodiment of the invention 1 a control plane infomational message control flow schematic diagram;
Fig. 5 is the embodiment of the invention 1 a Data Control schematic diagram;
Fig. 6 is the embodiment of the invention 2 structural representations;
Fig. 7 is the embodiment of the invention 3 control plane infomational message control flow schematic diagrames;
Fig. 8 is the embodiment of the invention 3 Data Control schematic diagrames;
Fig. 9 is the embodiment of the invention 4 control plane infomational message control flow schematic diagrames;
Figure 10 is the embodiment of the invention 4 Data Control schematic diagrames.
Embodiment
With embodiment the present invention is described in further detail with reference to the accompanying drawings below:
Embodiment 1:
As shown in Figure 3, Provider Edge PE1 node, Provider Edge PE2 node and P equipment (P equipment: core forwarding node equipment) form a MPLS VPN, set up a strip label switching path LSP1 between Provider Edge PE1 node and the Provider Edge PE2, client's edge C E1 terminal and the client's edge C E2 terminal of setting up virtual connections VC with Provider Edge PE1 node offer user a and user b respectively, set up client's edge C E3 terminal and the client's edge C E4 terminal that VC is connected with Provider Edge PE2 node and offer user a and user b respectively, user a transmits by same label switching path LSP 1 tunnel with the different VC messages of user b, as shown in Figure 5, the message of client's edge C E1 terminal inserts datum plane by data-interface, determine virtual connections VC according to the forwarding equivalence class FEC that has been provided with, encapsulation virtual connections VC label, encapsulation tunnel TUNNEL label is after label switching path LSP 1 tunnel is sent to Provider Edge PE2 node, be the EGRESS node, after separating tunnel TUNNEL encapsulation and virtual connections VC encapsulation, be sent to client's edge C E3 terminal again; This MPLS VPN is that control plane distributes virtual connections VC label, sets up corresponding virtual connections VC, and has set up the label switching path LSP that exclusively enjoys 2 tunnels for control plane.
The concrete control flow of present embodiment is as follows:
1) as shown in Figure 3 and Figure 4, MPLS VPN is that control plane distributes virtual connections VC label, set up virtual connections VC at Provider Edge PE1 node and Provider Edge PE2 node, control plane and corresponding Provider Edge PE1 node, Provider Edge PE2 node is set up virtual connections VC, in the present invention, application complexity in view of control plane, can or use according to the disparate modules in the control plane and distribute corresponding virtual connections VC label, promptly, the division of forwarding equivalence class FEC can distribute a plurality of virtual connections VC labels to control plane based on disparate modules or application.A newly-built strip label switching path LSP2 tunnel is as the information transfer channel between the control plane of Provider Edge PE1 node and Provider Edge PE2 node, establishes this tunnel and be the information transfer channel between the control plane.
2) as Fig. 3, Fig. 4 and shown in Figure 5, Provider Edge PE1 node as transmitting terminal, the cpu i/f of control plane by Provider Edge PE1 node that is the INGRESS node inserts datum plane with the message that generates, and the message format that control plane generates is the information D ATA of tape label not.
3) as Fig. 3, Fig. 4 and shown in Figure 5, datum plane is determined virtual connections VC, encapsulation virtual connections VC label, encapsulation tunnel TUNNEL label to message according to the forwarding equivalence class FEC that has been provided with, according to virtual connections VC label and tunnel TUNNEL label forwarding message.
4) as shown in Figure 3, message information is the transmission of each P node in MPLS VPN, by label switching path LSP 2 tunnel transmission to the Provider Edge PE2 node as receiving terminal, i.e. EGRESS node;
5) as shown in Figure 3 and Figure 4, the datum plane of this EGRESS node is according to tunnel TUNNEL label or the virtual connections VC tag recognition message of control plane whether, if the message of control plane is then made following respective handling to message according to actual needs:
51) as shown in Figure 4, datum plane is sent to control plane and handles after also message being separated tunnel TUNNEL encapsulation and virtual connections VC encapsulation, continues following steps 6).
52) as shown in Figure 4, datum plane is sent to control plane and handles after also message being separated tunnel TUNNEL encapsulation, continues following steps 6).
53) as shown in Figure 4, datum plane directly is sent to control plane and handles not to the message decapsulation, continues following steps 6).
6) control plane can then be sent to message the CPU processing, if necessary, can make relevant deblocking to message by CPU.
Like this, as the MPLS VPN user, the infomational message of control plane transmits by MPLS VPN with control plane in the present invention.
In the present embodiment, because control plane exclusively enjoys a strip label switching path LSP2 tunnel, therefore can be separately to the message information realization QOS demand of control plane, this is particularly suitable for application scenario that control plane reliability of information transmission and QOS are had relatively high expectations.
In addition, in the present embodiment, because control plane exclusively enjoys a strip label switching path LSP2 tunnel, for the special case of certain application, for example, when the application module of control plane only needs one to connect, message can be with virtual connections VC encapsulation and direct encapsulation tunnel TUNNEL label, and transmit in label switching path LSP 2 tunnels, but this does not run counter to the above, just virtual connections VC has been got a default value.
Embodiment 2:
As shown in Figure 6, the difference of present embodiment and embodiment 1 is: in the present embodiment, MPLS VPN specifies already present label switching path LSP 1 tunnel as the information transfer channel between the control plane of different Provider Edge PE nodes, as shown in Figure 6, control plane and user a, user b share label switching path LSP 1 tunnel, establish information transfer channel between the control plane with this.Concrete control flow and embodiment 1 as for present embodiment are described same or similar, repeat no more herein.
Embodiment 3:
According to Fig. 7 and Fig. 8, with reference to figure 3, present embodiment is identical with embodiment 1 general structure, and the concrete control flow of present embodiment is as follows:
1, as Fig. 3 and shown in Figure 7, MPLS VPN is that control plane distributes virtual connections VC label, set up virtual connections VC at Provider Edge PE1 node and Provider Edge PE2 node, control plane and corresponding Provider Edge PE1 node, Provider Edge PE2 node is set up virtual connections VC, in the present invention, application complexity in view of control plane, can or use according to the disparate modules in the control plane and distribute corresponding virtual connections VC label, promptly, the division of forwarding equivalence class FEC can distribute a plurality of virtual connections VC labels to control plane based on disparate modules or application.A newly-built strip label switching path LSP2 tunnel is as the information transfer channel between the control plane of Provider Edge PE1 node and Provider Edge PE2 node, establishes this tunnel and be the information transfer channel between the control plane.
2, as Fig. 3, Fig. 7 and shown in Figure 8, Provider Edge PE1 node as transmitting terminal, the control plane that is the INGRESS node passes through the cpu i/f of Provider Edge PE1 node with the message access datum plane that generates, the message format that control plane generates is the information D ATA of band virtual connections VC label, in control plane inside, control plane can be determined virtual connections VC, encapsulation virtual connections VC label to information D ATA according to the forwarding equivalence class FEC that has been provided with, generates message.
3, as Fig. 3, Fig. 7 and shown in Figure 8, datum plane is to message encapsulation tunnel TUNNEL label, according to virtual connections VC label and tunnel TUNNEL label forwarding message.
4, as shown in Figure 3, message information is the transmission of each P node in MPLS VPN, by label switching path LSP 2 tunnel transmission to the Provider Edge PE2 node as receiving terminal, i.e. EGRESS node;
5, as Fig. 3 and shown in Figure 7, the datum plane of this EGRESS node is according to tunnel TUNNEL label or the virtual connections VC tag recognition message of control plane whether, if the message of control plane is then made following respective handling to message according to actual needs:
51, as shown in Figure 7, datum plane is sent to control plane and handles after also message being separated tunnel TUNNEL encapsulation and virtual connections VC encapsulation, continues following steps 6.
52, as shown in Figure 7, datum plane is sent to control plane and handles after also message being separated tunnel TUNNEL encapsulation, continues following steps 6.
53, as shown in Figure 7, datum plane directly is sent to control plane and handles not to the message decapsulation, continues following steps 6.
6, control plane can then be sent to message the CPU processing, if necessary, can make relevant deblocking to message by CPU.
Embodiment 4:
According to Fig. 9 and Figure 10, with reference to figure 3, present embodiment is identical with embodiment 1 general structure, and the concrete control flow of present embodiment is as follows:
I) as Fig. 3 and shown in Figure 9, MPLS VPN is that control plane distributes virtual connections VC label, set up virtual connections VC at Provider Edge PE1 node and Provider Edge PE2 node, control plane and corresponding Provider Edge PE1 node, Provider Edge PE2 node is set up virtual connections VC, in the present invention, application complexity in view of control plane, can or use according to the disparate modules in the control plane and distribute corresponding virtual connections VC label, promptly, the division of forwarding equivalence class FEC can distribute a plurality of virtual connections VC labels to control plane based on disparate modules or application.A newly-built strip label switching path LSP2 tunnel is as the information transfer channel between the control plane of Provider Edge PE1 node and Provider Edge PE2 node, establishes this tunnel and be the information transfer channel between the control plane.
II) as Fig. 3, Fig. 9 and shown in Figure 10, Provider Edge PE1 node as transmitting terminal, the control plane that is the INGRESS node passes through the cpu i/f of Provider Edge PE1 node with the message access datum plane that generates, the message format that control plane generates is the information D ATA of band virtual connections VC and tunnel TUNNEL label, in control plane inside, control plane can be according to the forwarding equivalence class FEC that has been provided with, information D ATA is determined virtual connections VC, encapsulation virtual connections VC label, encapsulation tunnel TUNNEL label, generate message.
III) as Fig. 3, Fig. 9 and shown in Figure 10, datum plane directly E-Packets according to virtual connections VC label and tunnel TUNNEL label.
IV) as shown in Figure 3, message information is the transmission of each P node in MPLS VPN, by label switching path LSP 2 tunnel transmission to the Provider Edge PE2 node as receiving terminal, i.e. EGRESS node;
V) as Fig. 3 and shown in Figure 9, the datum plane of this EGRESS node is according to tunnel TUNNEL label or the virtual connections VC tag recognition message of control plane whether, if the message of control plane is then made following respective handling to message according to actual needs:
V1) as shown in Figure 9, datum plane is sent to control plane and handles after also message being separated tunnel TUNNEL encapsulation and virtual connections VC encapsulation, continues following steps VI).
V2) as shown in Figure 9, datum plane is sent to control plane and handles after also message being separated tunnel TUNNEL encapsulation, continues following steps VI).
V3) as shown in Figure 9, datum plane directly is sent to control plane and handles not to the message decapsulation, continues following steps VI).
VI) control plane can then be sent to message the CPU processing, if necessary, can make relevant deblocking to message by CPU.
Claims (10)
1. the network transfer method of a MPLS VPN, in comprising the MPLS VPN of control plane, with control plane as the network user, described MPLS VPN is that control plane distributes virtual connections VC label, set up corresponding virtual connections VC and be connected with the establishment label switching path LSP, the infomational message of control plane is by this Network Transmission.
2. the network transfer method of MPLS VPN according to claim 1, it adopts following steps:
The label switching path LSP that A, MPLS VPN are set up between virtual connections VC and the establishment Provider Edge PE node at Provider Edge PE node connects;
Behind B, the Provider Edge PE node control plane generation message it is reached datum plane as transmitting terminal;
C, datum plane are to the message respective handling;
D, message pass through the label switching path LSP tunnel transmission to the Provider Edge PE node as receiving terminal;
The datum plane of the Provider Edge PE node of E, described receiving terminal to the message respective handling after, handle message by control plane.
3. the network transfer method of MPLS VPN according to claim 2, it is characterized in that: in the described steps A, control plane is set up virtual connections VC with corresponding Provider Edge PE node; The newly-built strip label switching path lsp tunnel of MPLS VPN or specify an already present label switching path LSP tunnel as the information transfer channel between the control plane of different Provider Edge PE nodes.
4. the network transfer method of MPLS VPN according to claim 2, it is characterized in that: among the described step B, described control plane inserts datum plane by the cpu i/f of Provider Edge PE node with message; Among the described step C, described datum plane is determined virtual connections VC, encapsulation virtual connections VC label, encapsulation tunnel TUNNEL label to message according to the forwarding equivalence class FEC that has been provided with, according to virtual connections VC label and tunnel TUNNEL label forwarding message.
5. the network transfer method of MPLS VPN according to claim 2, it is characterized in that: among the described step B, described control plane has virtual connections VC label by the cpu i/f of Provider Edge PE node with the message that message inserts datum plane and generation; Among the described step C, described datum plane is to this message encapsulation tunnel TUNNEL label, according to virtual connections VC label and tunnel TUNNEL label forwarding message.
6. the network transfer method of MPLS VPN according to claim 2, it is characterized in that: among the described step B, described control plane has virtual connections VC label and tunnel TUNNEL label by the cpu i/f of Provider Edge PE node with the message that message inserts datum plane and generation; Among the described step C, described datum plane is according to virtual connections VC label and tunnel TUNNEL label forwarding message.
7. according to the network transfer method of claim 5 or 6 described MPLS VPNs, it is characterized in that: among the described step B, control plane can be according to the forwarding equivalence class FEC that has been provided with to information encapsulation virtual connections VC or tunnel TUNNEL label.
8. the network transfer method of MPLS VPN according to claim 2, it is characterized in that: in the described step e, the datum plane of the Provider Edge PE node of described receiving terminal is then to be sent to control plane to handle according to tunnel TUNNEL label or the virtual connections VC tag recognition message of control plane whether.
9. the network transfer method of MPLS VPN according to claim 8, it is characterized in that: described datum plane also message is separated tunnel TUNNEL encapsulation or separate tunnel TUNNEL encapsulation and virtual connections VC encapsulation or not decapsulation after, be sent to control plane.
10. the network transfer method of MPLS VPN according to claim 1 and 2 is characterized in that: described MPLS VPN is according to the disparate modules in the control plane or use and distribute corresponding virtual connections VC label.
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| CNB2004101040943A CN100438496C (en) | 2004-12-19 | 2004-12-19 | Network transmission method for multi-protocol label exchange VPN |
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| CNB2004101040943A CN100438496C (en) | 2004-12-19 | 2004-12-19 | Network transmission method for multi-protocol label exchange VPN |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008043265A1 (en) * | 2006-09-29 | 2008-04-17 | Huawei Technologies Co., Ltd. | Multiplex method of vlan switching tunnel and vlan switching domain |
| CN101304390B (en) * | 2008-07-07 | 2011-04-13 | 杭州华三通信技术有限公司 | Method for distributing MPLS label as well as method and apparatus for mapping VPLS messages |
| CN101237403B (en) * | 2008-03-04 | 2011-12-28 | 中兴通讯股份有限公司 | service multiplexing method for Ethernet |
| CN104579944A (en) * | 2013-10-18 | 2015-04-29 | 宇宙互联有限公司 | Transmission path management system and method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100259276B1 (en) * | 1997-01-27 | 2000-06-15 | 윤종용 | Interconnection network having extendable bandwidth |
| US7209439B2 (en) * | 2001-03-20 | 2007-04-24 | Mci, Llc | Pool-based resource management in a data network |
| US7433969B2 (en) * | 2001-12-31 | 2008-10-07 | Redback Networks Inc. | Method and apparatus for representing label switched paths |
| CN100359885C (en) * | 2002-06-24 | 2008-01-02 | 武汉烽火网络有限责任公司 | Method for forwarding data by strategic stream mode and data forwarding equipment |
| CN1202638C (en) * | 2003-01-16 | 2005-05-18 | 上海交通大学 | Method for delivering link state information to pass through network |
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2004
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008043265A1 (en) * | 2006-09-29 | 2008-04-17 | Huawei Technologies Co., Ltd. | Multiplex method of vlan switching tunnel and vlan switching domain |
| CN101237403B (en) * | 2008-03-04 | 2011-12-28 | 中兴通讯股份有限公司 | service multiplexing method for Ethernet |
| CN101304390B (en) * | 2008-07-07 | 2011-04-13 | 杭州华三通信技术有限公司 | Method for distributing MPLS label as well as method and apparatus for mapping VPLS messages |
| CN104579944A (en) * | 2013-10-18 | 2015-04-29 | 宇宙互联有限公司 | Transmission path management system and method |
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| Publication number | Publication date |
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| CN100438496C (en) | 2008-11-26 |
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