CN1859264A - Method and system for penetrating and transmitting ATM cell - Google Patents
Method and system for penetrating and transmitting ATM cell Download PDFInfo
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- CN1859264A CN1859264A CNA2005101210489A CN200510121048A CN1859264A CN 1859264 A CN1859264 A CN 1859264A CN A2005101210489 A CNA2005101210489 A CN A2005101210489A CN 200510121048 A CN200510121048 A CN 200510121048A CN 1859264 A CN1859264 A CN 1859264A
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Abstract
The present invention provides transparent transmission ATM cell method and system. It contains through adopting PE detecting ATM signaling mode establishment corresponded PW for ATM connection, obtaining transparent transmission ATM cell required parameter, through these parameter mapping ATM connection to corresponded PW, transparent transmission ATM cell. At the same time PE also can ensure QoS in transmitting ATM cell according to obtained ATM signaling parameter. The present invention can realizes transparent transmission ATM cell without making PE equipment having complete ATM signaling function.
Description
Technical field
The invention belongs to the communications field, particularly the problem of transmission ATM cell in the IP/MPLS network.
Background technology
MPLS (Multiprotocol Label Switching) is the abbreviation of multiprotocol label switching, uses short and the label of fixed length comes encapsulating packets.MPLS obtains the link layer service from various link layers (as PPP, ATM, frame relay, Ethernet etc.), provides connection-oriented service for network layer again.MPLS can be supported from IP routing protocol and control protocol, also supports the constraint route based on strategy simultaneously, and routing function is powerful, flexible, can satisfy the requirement of various new application to network.
PWE3 is that the PSN here can be MPLS, IP or L2TP network by PW (pseudo-line) emulation L1, L2 private line service on PSN (packet switching network) network; Pseudo-line is carried among the PSN Tunnel, and PSNTunnel promptly becomes the designated lane of pseudo-line.Available PSN Tunnel technology has GRE/L2TP/IP-Sec on the IP network and LSP/LDP of MPLS network etc., and PSN Tunnel must have identical or be higher than the QoS of private line service; Carry out pseudo-special line emulation, the PSN network only need be managed PSN Tunnel, does not need to pay close attention to each PW in principle, forms a converged network based on MPLS or IP technology like this, has transmitted private line service effectively, has simplified the management of core network.
When two ATM subnets connect by the IP/MPLS network, for penetrating and transmitting ATM cell in network, present method is PWE3 (Pseudo Wire Emulation Edge to Edge), be between a pair of ATM switch, an or VP (Virtual Path), or a VC (Virtual Circuit) sets up PW, and PWE3 has solved the problem that ATM cell is packaged into the MPLS message.Under the prior art condition, penetrating and transmitting ATM cell can be by following several modes:
1, the IP/MPLS network couples together two ATM switch by a PW, does not distinguish wherein independent ATM and connects.For guaranteed qos, need be the QoS that EF (ExpediteForwarding) type guarantees whole PW according to CBR (constant bit rate).
In this processing method, all ATM connections obtain same processing, and the connection of some low priorities has obtained the processing of high priority, has wasted the transfer capability of equipment.
2, the IP/MPLS network is that each ATM between two ATM switch connects and sets up independent PW, goes up static configuration PW at PE (edge router).
Need be connected static configuration PW on the PE for each ATM in this processing mode, the workload of configuring maintenance is very big.
3, realize complete atm signaling function on PE, PE participates in ATM calling procedure end to end, sets up PW dynamically according to the requirement of each calling in the IP/MPLS network.
In this mode, PE need realize complete atm signaling function, will obtain also very difficulty of flow control parameter that each ATM connects simultaneously.
Summary of the invention
In view of the problem that exists in the such scheme, the objective of the invention is to propose a kind of method of penetrating and transmitting ATM cell, do not need PE equipment to realize complete atm signaling function, just can penetrating and transmitting ATM cell, and can guarantee its QoS.
The present invention proposes a kind of method of penetrating and transmitting ATM cell, may further comprise the steps:
A, edge router are intercepted atm signaling, obtain the atm signaling parameter;
B, edge router are set up pseudo-line according to the atm signaling parameter of obtaining and are connected;
C, edge router are mapped in the corresponding pseudo-line penetrating and transmitting ATM cell according to the atm signaling parameter of obtaining with the ATM connection.
Intercept the method for atm signaling as the described edge router of step a, may further comprise the steps:
A1, edge router are analyzed the ATM cell head, the identification signalling path;
A2, handle, form the atm signaling frame by the signaling adaptation layer, and the identification signaling type;
A3, identification signaling message type.
The method of setting up pseudo-line connection according to the atm signaling parameter of obtaining as the described edge router of step b can be:
Between a pair of ATM switch, set up a pseudo-line, and all ATM connections between the ATM switch are mapped in this puppet line.
The method of setting up pseudo-line connection according to the atm signaling parameter of obtaining as the described edge router of step b can also be:
The at first static pseudo-line of setting up of edge router is used to transmit signaling, and edge router listens to ATM connection back and sets up pseudo-line for each ATM connects dynamically then, and is that each pseudo-line distributes and the release bandwidth.
The method of setting up pseudo-line connection according to the atm signaling parameter of obtaining as the described edge router of step b can also be:
Edge router is that pseudo-line connection is set up in the ATM connection of every kind of type of service, and the type of service according to ATM is mapped to the ATM connection in the pseudo-line of respective type then.
When a plurality of ATM connected pseudo-line of correspondence, the method that can adopt Hierarchical QoS to call was that each ATM connects the distribution bandwidth.
In the said method, edge router is set up dynamically and is discharged pseudo-line and be connected, and may further comprise the steps:
11) when edge router listens to the SETUP message that the ATM corresponding with pseudo-line connect, judge whether network has enough resources to set up the pseudo-line of correspondence, if having then change step 2), otherwise, abandon SETUP message, finish this flow process;
When 12) edge router listens to the CONNECT message of above-mentioned ATM connection, judge whether this ATM connects is first connection of this puppet line, if then set up pseudo-line and distribute bandwidth, otherwise increase the bandwidth of pseudo-line;
13) when edge router listens to the RELEASE message of the ATM connection corresponding with pseudo-line, reduce the bandwidth of pseudo-line, if it is last ATM connection of this pseudo-line, then discharge pseudo-line.
According to the atm signaling parameter that edge router in the said method obtains, can also guarantee the QoS that ATM connects, its step is as follows:
21) edge router generates a traffic classification list item and a QoS formation according to the atm signaling parameter of obtaining at the edge router Forwarding plane;
22) after edge router listens to ATM cell, carry out traffic classification, and call corresponding QoS formation, guarantee its QoS quality according to its stream type.
When a plurality of ATM connect when being mapped to a pseudo-line and connecting, this puppet line connects and both had been used to transmit two signalings between the ATM switch, also is used to transmit two data between the ATM switch.
The present invention also proposes a kind of ATM cell transparent transmission device, comprises that signaling intercepts module and cell transport module:
Signaling is intercepted module and is intercepted and captured ATM cell extraction atm signaling parameter, sends the atm signaling parameter to the cell transport module;
The cell transport module is set up pseudo-line according to the atm signaling parameter and is connected, and ATM is connected be mapped in the corresponding pseudo-line transmission ATM cell.
The present invention also proposes a kind of system of penetrating and transmitting ATM cell, comprises ATM switch and edge router at least, signaling is set in described edge router intercepts module and cell transport module;
Described signaling is intercepted module and is intercepted and captured the ATM cell that ATM switch sends, and extracts the atm signaling parameter, sends the atm signaling parameter to the cell transport module;
Described cell transport module is set up pseudo-line according to the atm signaling parameter and is connected, and ATM is connected be mapped in the corresponding pseudo-line, by pseudo-line ATM cell is transferred in the purpose ATM switch.
In sum, the method and system of a kind of penetrating and transmitting ATM cell that the present invention proposes makes edge router need not to realize complete atm signaling, and only need intercept it, obtains the necessary information with the ATM join dependency, just can the transparent transmission atm signaling; PE can guarantee the QoS that each ATM connects, and each connects independent, the correct processing of acquisition; And PE need not to do static configuration into each ATM connects, and the workload of maintenance is little, has overcome the deficiency in original method.
Description of drawings
Fig. 1 is a network model of the present invention.
Fig. 2 is by intercepting the overview flow chart of mode penetrating and transmitting ATM cell.
Fig. 3 intercepts atm signaling for PE, obtains the flow chart of atm signaling parameter.
Fig. 4 dynamically sets up the flow chart of PW for PE.
Fig. 5 dynamically discharges the flow chart of PW for PE.
Fig. 6 is the message format of SETUP in the agreement Q.2931.
Fig. 7 is the message format of CONNECT in the agreement Q.2931.
Fig. 8 is the message format of RELEASE in the agreement Q.2931.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, by the following examples, and, the present invention is described in further detail with reference to accompanying drawing.
The present invention proposes a kind of method of penetrating and transmitting ATM cell, and the mode of PE by intercepting obtained some parameters that ATM connects, and utilizes the PW penetrating and transmitting ATM cell by these parameters, the QoS in the time of also can guaranteeing to transmit simultaneously.
Fig. 1 is a network model of the present invention, two ATM switch link to each other by the IP/MPLS network, pe router is set up PE by signaling and is connected to the pseudo-circuit of PE on its chain of command, finish on the data surface Layer 2 data isl frame to the encapsulation of IP/MPLS mark bag, go to encapsulate, sequence management, timing and other business functions of finishing service needed.PE is configurating PVC (permanent virtual connection) and PW thereon, according to the PE and the PVC of opposite end, PVC is bundled on the PW simultaneously, sets up PW and connect between two PE.PE by the PE that PW is transparent to the opposite end, realizes the transmission of ATM switch by the IP/MPLS network with the ATM packet that receives.
The present invention intercepts the ATM ways of connecting by adopting PE, obtains the required parameter of penetrating and transmitting ATM cell, by these parameters ATM is connected then to be mapped to corresponding PW, by PW transmission ATM cell.This method makes PE equipment need not realize complete atm signaling function, just can penetrating and transmitting ATM cell, realize that easily, configuration is simple.Below we will introduce overview flow chart of the present invention, as shown in Figure 2, its step is as follows:
Step 201, PE obtains the atm signaling parameter by intercepting atm signaling.
Between ATM switch, set up ATM and connect (as Q.2931 by dynamic signaling, below all Q.2931 being example, because other agreements such as PNNI, AINI etc. are all based on this agreement, so same method is suitable equally), PE identifies single connection by analyzing the cell of intercepting and capturing, and obtains the atm signaling parameter.
Step 202, PE sets up PW according to the atm signaling parameter of obtaining and connects.
In the IP/MPLS network, PE sets up PW and connects according to the atm signaling parameter of obtaining.We can adopt multiple mode to set up the PW connection, and concrete introduction will provide in the back.
Step 203, PE is mapped among the corresponding PW penetrating and transmitting ATM cell according to the atm signaling parameter of obtaining with the ATM connection.
PE connects this ATM among the PW that is mapped to correspondence after identifying the type of single ATM connection.
By the above-mentioned method of intercepting, PE only need realize the atm signaling function of a part, just can realize ATM being connected in the PW connection that is mapped to correspondence penetrating and transmitting ATM cell.Below we put up with each step and do detailed description.
As described in above-mentioned step 201, the mode of the present invention by intercepting, identification ATM connects, and obtains the atm signaling parameter.Fig. 3 obtains the flow chart of atm signaling parameter for PE among the present invention intercepts ATM cell, and its concrete step is as follows:
In point-to-point signaling method, only there is unique signaling end point in user side, and signaling end point connects by a permanent signaling virtual path (SVC) of setting up, and utilizes this SVC (VCI=5) to call out the call release function for the user provides to set up.
Step 303 is handled by signaling adaptation layer (SALL), forms the atm signaling frame, and the identification signaling type;
PE discerns the type of signaling message by obtaining the Message Type territory in the signaling message header, judges whether it is message such as SETUP, CONNECT or RELEASE.The message format of SETUP, CONNECT, RELEASE is seen Fig. 6, Fig. 7 and Fig. 8.
Step 305 is obtained the corresponding information in the signaling message.
Obtain the corresponding information in the signaling message, as the Call Reference in the SETUP message, Traffic Descriptor, information such as Connection Identifier, AALParameter in the CONNECT message and RELEASE message.
The mode of PE by intercepting obtained some information that relevant ATM connects, and for the following PW that sets up connects and ATM is connected among the PW that is mapped to correspondence, lays a good foundation.
In above-mentioned steps 202, we can connect by setting up PW in many ways, and concrete method is as follows:
1.PE router in the IP/MPLS network, between a pair of ATM switch by the method for configuration, set up a PW, this PW both had been used for the signaling between two switches of transparent transmission, also was used for the data of transparent transmission between them.This PW has distributed bandwidth (wherein having reserved the bandwidth of atm signaling).The ATM switch of both sides is used as this PW as transparent large pipeline, has disposed its bandwidth parameter, for the dynamic calling that will set up distributes bandwidth from this pipeline, and implements CAC (Call Admission Control).All ATM connections between these two ATM switch all are mapped among this PW.
Be no more than the bandwidth of PW for the total bandwidth of all connections of guaranteeing to hold among the PW, can adopt the method for Hierarchical QoS scheduling, the corresponding PW of one-level formation is promptly arranged, guarantee its bandwidth, next stage formation corresponding atm connects, and a plurality of this formations are nested in the pairing formation of PW.Use this method not only to guarantee the bandwidth that each PW connects, and guaranteed that the total bandwidth of all connections is no more than the bandwidth of PW.
2, pe router at first in the IP/MPLS network the static PW that sets up be used to transmit signaling, listen to ATM by PE and connect the back and dynamically set up and be connected corresponding PW with ATM, and distribute for PW dynamically and the release bandwidth.
3, PE is that the ATM of each type of service (as CBR, VBR, UBR etc.) connects and to set up PW.After PE listens to an ATM connection, according to its type of service, select it to transmit by which PW, in this case, the bandwidth of configurable each PW of ATM switch of both sides, and implement CAC (connect and allow control) respectively.In this pattern, all ATM connections of same type all are mapped among the PW.
Above-mentioned setting up in the PW ways of connecting, PE can obtain the information of ATM cell by the mode of intercepting, and the dynamic PW that sets up correspondence connects.Below we will introduce PE and set up the process that corresponding PW connects dynamically.
PE sets up the flow process of PW dynamically, as shown in Figure 4:
Step 401, PE intercepts the ATM connection and sets up message;
Whether PE intercepts to have and sets up the message SETUP transmission that ATM connects.
Step 402, PE judges whether system has enough resources to set up this ATM and connect corresponding PW, if having, changes step 403, otherwise changes step 404;
When PE listens to the ATM connection of PW correspondence, judge whether the corresponding PW of sufficiently high resource foundation.
Step 403 judges whether this ATM connects is first ATM connection of this PW, if change step 405, otherwise change step 406;
When PE listens to the CONNECT message of ATM connection, judge whether this ATM connects is first ATM connection of PW.
Step 404 is abandoned setting up PW and is connected, and ends flow process;
Step 405 is set up PW and is distributed bandwidth for it;
If first ATM of PW connects, then PE sets up this PW, and is its distribution bandwidth.
Step 406 is for PW increases bandwidth.
First ATM if not PW connects, and then PE only distributes certain bandwidth for it.
PE dynamically discharges the flow process of PW, as shown in Figure 5:
Step 501, PE intercepts the ATM connection release message;
PE intercepts corresponding ATM and connects whether connection release message RELEASE transmission is arranged.
Step 502 judges whether this ATM connects is last ATM connection of corresponding PW.
Judge whether this ATM connects is last ATM connection of corresponding PW, if then change step 503, otherwise change step 504.
Step 503 discharges the bandwidth that this ATM connects shared PW, discharges this PW simultaneously;
Step 504 discharges this ATM and connects the PW bandwidth that takies.
Dynamically setting up in the process that is connected with release PW at PE of above-mentioned introduction finished CAC mechanism by PE, at this moment do not need the ATM switch of both sides to implement CAC.
According to step 203, at the signaling parameter of PE according to the ATM connection that obtains, and after setting up corresponding PW connection, PE connects the PW that is mapped to correspondence with ATM and connects, and realizes the transparent transmission of ATM cell.
ATM cell connects the method that is mapped to PW from ATM, we can design according to VPI, VCI is the Hash table of index, also can utilize the VCI territory of cell to transmit LID (connection ID) information, search correspondence table according to LID, specific implementation is seen patent application document (CN200510083945.5).
In the present invention, the mode of PE by intercepting obtained necessary atm signaling parameter, realizing penetrating and transmitting ATM cell, need not realize whole atm signaling functions, is example with agreement Q.2931 below, PE is described by intercepting the detailed process of mode penetrating and transmitting ATM cell, message format is shown in Fig. 6,7,8
Detailed process is as follows:
PE listens to atm signaling message, according to the Call Reference field in the SETUP message, identifies one and calls out and write down message such as its Traffic Descriptor.After receiving Connect message with same Call Reference field, think to call out and set up, obtain the fields such as Connection Identifier, AAL Parameter in the CONNECT message, be used for discerning this connection at datum plane, during this period, receive message such as CALL PROCEEDING, CONNECT ACKNOWLEDGE, all ignored.After receiving SETUP message, should start the T303 timer, if the overtime call release of answering is noted down.
When examining when hearing RELEASE message, according to Call Reference field, find call record, and record is called out in deletion.
Simultaneously, the mode of PE by intercepting, the method for acquisition ATM cell parameter, the QoS in the time of can also guaranteeing penetrating and transmitting ATM cell still to be example Q.2931, illustrates concrete method below, and is as follows:
Information such as Connection Identifier, AALParameter that PE connects according to the ATM that obtains above and Traffic Descriptor generate a traffic classification list item (based on Connection Identifier) and a QoS formation (based on AAL Parameter and Traffic Descriptor) at the Forwarding plane of PE.After the interface that PE listens to above-mentioned connection is received ATM cell, carry out traffic classification, consistent if VPI/VCI and Connection Identifier describe, then dispatch, thereby guarantee its QoS by the described QoS formation of previous step.
It is to be noted, above-mentioned PE penetrating and transmitting ATM cell that on agreement basis Q.2931, illustrates and the method that guarantees its QoS, in other agreement, be suitable for too, here no longer repeat, simultaneously can be but be not limited to above signaling parameter according to above signaling parameter penetrating and transmitting ATM cell.
In sum, in the mode of original penetrating and transmitting ATM cell, on PE equipment, realize complete atm signaling function, as Q.2931, tens message are arranged, tens states, state machine more complicated, PE participates in ATM calling procedure end to end, dynamically sets up PW according to the requirement of each calling in the IP/MPLS network.Intercept the ATM ways of connecting by PE equipment, PE obtains the parameter of ATM cell as required, sets up PW dynamically, and guarantees the QoS of its communication, only needs 3 message of PE device processes (SETUP, CONNECT and RELEASE), and 2 states are just passable.Therefore compare with original transmission means, this kind mode implements simpler, and is convenient.
The present invention also proposes a kind of ATM cell transparent transmission device, intercepts module and the cell transport module is formed by signaling.Signaling is intercepted module, extracts the atm signaling parameter by intercepting and capturing ATM cell, sends the atm signaling parameter of extracting to the cell transport module simultaneously; The cell transport module receives signaling and intercepts the atm signaling parameter that module transmits, and sets up corresponding PW according to the atm signaling parameter and connects, and ATM is connected be mapped among the corresponding PW penetrating and transmitting ATM cell.Concrete operation principle is described in preamble, no longer repeats here.
The present invention also proposes a kind of system of penetrating and transmitting ATM cell, comprises ATM switch and pe router, is provided with signaling and intercepts module and cell transport module in pe router.Described signaling is intercepted module, extracts the atm signaling parameter by intercepting and capturing ATM cell, sends the atm signaling parameter of extracting to the cell transport module simultaneously; The cell transport module receives signaling and intercepts the atm signaling parameter that module transmits, and sets up corresponding PW according to the atm signaling parameter and connects, and ATM is connected be mapped among the corresponding PW penetrating and transmitting ATM cell.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement 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 claim.
Claims (11)
1, a kind of method of penetrating and transmitting ATM cell may further comprise the steps:
A, edge router are intercepted atm signaling, obtain the atm signaling parameter;
B, edge router are set up pseudo-line according to the atm signaling parameter of obtaining and are connected;
C, edge router are mapped in the corresponding pseudo-line penetrating and transmitting ATM cell according to the atm signaling parameter of obtaining with the ATM connection.
2, the method for a kind of penetrating and transmitting ATM cell as claimed in claim 1 is characterized in that, the described edge router of step a is intercepted atm signaling, may further comprise the steps:
A1, edge router are analyzed the ATM cell head, the identification signalling path;
A2, handle, form the atm signaling frame by the signaling adaptation layer, and the identification signaling type;
A3, identification signaling message type.
3, the method for a kind of penetrating and transmitting ATM cell as claimed in claim 1 is characterized in that, the method that the described edge router of step b is set up pseudo-line connection according to the atm signaling parameter of obtaining can be:
Between a pair of ATM switch, set up a pseudo-line and connect, and all ATM connections between the ATM switch all are mapped in this puppet line.
4, the method for a kind of penetrating and transmitting ATM cell as claimed in claim 1 is characterized in that, the method that the described edge router of step b is set up pseudo-line connection according to the atm signaling parameter of obtaining can also be:
The pseudo-line connection of setting up that edge router is at first static is used to transmit signaling, and edge router listens to and sets up pseudo-line connection for each ATM connects dynamically after ATM connects then, and is that each pseudo-line connects distribution and discharges bandwidth.
5, the method for a kind of penetrating and transmitting ATM cell as claimed in claim 1 is characterized in that, the method that the described edge router of step b is set up pseudo-line connection according to the atm signaling parameter of obtaining can also be:
Edge router is that pseudo-line connection is set up in the ATM connection of every kind of type of service, and the type of service according to ATM is mapped to the ATM connection in the corresponding pseudo-line then.
6, the method for a kind of penetrating and transmitting ATM cell as claimed in claim 3 is characterized in that, a plurality of ATM connect when being mapped to a pseudo-line, and the method that can adopt Hierarchical QoS to call is that ATM connects and distributes bandwidth.
7, the method for a kind of penetrating and transmitting ATM cell as claimed in claim 4 is characterized in that, edge router is set up dynamically and discharged pseudo-line and be connected, and may further comprise the steps:
11) when edge router listens to the SETUP message that the ATM corresponding with pseudo-line connect, judge whether network has enough resources to set up corresponding pseudo-line connection, if having then change step 12), otherwise, abandon SETUP message, finish this flow process;
When 12) edge router listens to the CONNECT message of above-mentioned ATM connection, judge whether this ATM connects is first connection of this puppet line, if then set up pseudo-line and distribute bandwidth, otherwise increase the bandwidth of pseudo-line;
13) when edge router listens to the RELEASE message of the ATM connection corresponding with pseudo-line, reduce the bandwidth of pseudo-line, if it is last ATM connection of this pseudo-line, then discharges pseudo-line and connect.
8, the method for a kind of penetrating and transmitting ATM cell as claimed in claim 1 is characterized in that, according to the atm signaling parameter that edge router obtains, can also guarantee the QoS that ATM connects, and its step is as follows:
21) edge router generates a traffic classification list item and a QoS formation according to the atm signaling parameter of obtaining at the edge router Forwarding plane;
22) after edge router listens to ATM cell, carry out traffic classification, and call corresponding QoS formation, guarantee its QoS quality according to its stream type.
9, the method for a kind of penetrating and transmitting ATM cell as claimed in claim 3 is characterized in that, described pseudo-line connects and both had been used to transmit two signalings between the ATM switch, also is used to transmit two data between the ATM switch.
10, a kind of ATM cell transparent transmission device comprises that signaling intercepts module and cell transport module, it is characterized in that:
Signaling is intercepted module and is intercepted and captured ATM cell extraction atm signaling parameter, sends the atm signaling parameter to the cell transport module;
The cell transport module is set up pseudo-line according to the atm signaling parameter and is connected, and ATM is connected be mapped in the corresponding pseudo-line transmission ATM cell.
11, a kind of system of penetrating and transmitting ATM cell comprises ATM switch and edge router at least, it is characterized in that, signaling is set in described edge router intercepts module and cell transport module;
Described signaling is intercepted module and is intercepted and captured the ATM cell that ATM switch sends, and extracts the atm signaling parameter, sends the atm signaling parameter to the cell transport module;
Described cell transport module is set up pseudo-line according to the atm signaling parameter and is connected, and ATM is connected be mapped in the corresponding pseudo-line, by pseudo-line ATM cell is transferred in the purpose ATM switch.
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| CNB2005101210489A CN100452756C (en) | 2005-12-20 | 2005-12-20 | Method and system for penetrating and transmitting ATM cell |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011032430A1 (en) * | 2009-09-17 | 2011-03-24 | 华为技术有限公司 | Pseudo wire establishment method and node device |
| CN102137008A (en) * | 2011-01-24 | 2011-07-27 | 华为技术有限公司 | Quality of service (QoS) keeping method, device and system |
| CN101611595B (en) * | 2006-12-21 | 2012-03-21 | 韦里佐内服务公司 | Multifunctional control channel for pseudowire emulation |
| CN103581049A (en) * | 2012-07-26 | 2014-02-12 | 中兴通讯股份有限公司 | Method and device for determining scheduling strategy |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1757210A (en) * | 2003-01-15 | 2006-04-05 | 希尔纳公司 | A method and apparatus for transporting packet data over an optical network |
| CN100550823C (en) * | 2003-12-26 | 2009-10-14 | 上海贝尔阿尔卡特股份有限公司 | A kind of Ethernet transfer equipment and method with quick protection and fair characteristic |
| US20050147104A1 (en) * | 2003-12-29 | 2005-07-07 | Hamid Ould-Brahim | Apparatus and method for multihop MPLS/IP/ATM/frame relay/ethernet pseudo-wire |
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2005
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101611595B (en) * | 2006-12-21 | 2012-03-21 | 韦里佐内服务公司 | Multifunctional control channel for pseudowire emulation |
| WO2011032430A1 (en) * | 2009-09-17 | 2011-03-24 | 华为技术有限公司 | Pseudo wire establishment method and node device |
| US8897136B2 (en) | 2009-09-17 | 2014-11-25 | Huawei Technologies Co., Ltd. | Pseudowire setup method and node device |
| CN102137008A (en) * | 2011-01-24 | 2011-07-27 | 华为技术有限公司 | Quality of service (QoS) keeping method, device and system |
| WO2012100679A1 (en) * | 2011-01-24 | 2012-08-02 | 华为技术有限公司 | Quality of service (qos) maintaining method, apparatus, and system |
| CN102137008B (en) * | 2011-01-24 | 2013-08-07 | 华为技术有限公司 | Quality of service (QoS) keeping method, device and system |
| US9065764B2 (en) | 2011-01-24 | 2015-06-23 | Huawei Technologies Co., Ltd. | Method, apparatus and system for maintaining quality of service QoS |
| CN103581049A (en) * | 2012-07-26 | 2014-02-12 | 中兴通讯股份有限公司 | Method and device for determining scheduling strategy |
| CN103581049B (en) * | 2012-07-26 | 2018-03-09 | 中兴通讯股份有限公司 | The determination method and device of scheduling strategy |
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| CN100452756C (en) | 2009-01-14 |
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