CN101656740A - Method and routing equipment for controlling label sending - Google Patents
Method and routing equipment for controlling label sending Download PDFInfo
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- CN101656740A CN101656740A CN200910180548A CN200910180548A CN101656740A CN 101656740 A CN101656740 A CN 101656740A CN 200910180548 A CN200910180548 A CN 200910180548A CN 200910180548 A CN200910180548 A CN 200910180548A CN 101656740 A CN101656740 A CN 101656740A
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Abstract
The invention discloses a method and routing equipment for controlling label sending, which are applied to an MPLS network. The method comprises the following steps: P equipment positioned in a core network receives an access label strategy sent by PE equipment positioned in an access layer; and the P equipment uses the access label strategy sent by the PE equipment as a local exported label strategy, filters labels to be notified to the PE equipment according to the local exported label strategy and only sends labels conforming to the local exported label strategy to the PE equipment. The invention can reduce the quantity of label protocol messages delivered between the P equipment and the PE equipment in the network and the effect of label oscillation to the PE equipment, optimize the network environment and save the network resources.
Description
Technical field
The present invention relates to communication field, relate in particular to a kind of method and routing device that label sends of controlling.
Background technology
LDP (Label Distribution Protocol, tag distribution protocol) is a kind of agreement that is specifically designed to label distribution, utilize LDP can realize that the routing iinformation with network layer maps directly to the label exchange message of data link layer, and then set up LSP (Label Switched Path, label switched path).The distribution of label is carried out according to routing iinformation in the LDP agreement, and after LDP SESSION (LDP session) set up, downstream node was according to routing iinformation, the upstream nodes distributing labels.
, can control at present the label that LSR (LabelSwitching Router, LSR) can label allocation policy control self will distribute and receive by label strategy for the distribution of LDP label.
Prior art, during LSR label allocation strategy, can only control self label distribution and reception, in actual networking is used, P equipment does not dispose under the situation of label strategy in the core network, can only on Access Layer PE equipment, dispose and go into label strategy and refuse unwanted label, have the label information of bulk redundancy like this between P equipment and the PE equipment.Also be not provided at the specific implementation that equipment room carries out the label interactive strategy in the prior art, the label that the P equipment in the core network can't configure label strategy subtend Access Layer PE devices advertise according to the needs of Access Layer PE equipment filters.Therefore, the bulk redundancy label information that exists between P equipment and the PE equipment has seriously consumed Internet resources, and the label concussion also can impact the PE equipment of Access Layer in the core net P equipment.
Summary of the invention
The invention provides a kind of method and routing device that label sends of controlling, be used to avoid the label information of the bulk redundancy that transmits between P equipment and the PE equipment, conserve network resources.
The invention provides a kind of method that label sends of controlling, be applied in the multiprotocol label switching MPLS network, described method comprises:
The routing device P equipment that is positioned at core net receives the label strategy of going into of described PE equipment that the routing device PE equipment be positioned at Access Layer sends;
Described P equipment is gone into label strategy as local outgoing label strategy with what described PE equipment sent, the label for the treatment of to described PE devices advertise according to described local outgoing label strategy filters, and the label that only will meet described local outgoing label strategy sends to described PE equipment.
Wherein, the described P equipment that is positioned at core net receive described PE equipment that the PE equipment that is positioned at Access Layer sends go into label strategy before, also comprise:
Described P equipment and the described PE equipment that is positioned at Access Layer that is positioned at core net carries out tag distribution protocol LDP session negotiation, confirms that the other side supports label strategy transmitting-receiving ability.
Wherein, described P equipment and the described PE equipment that is positioned at Access Layer that is positioned at core net carries out the LDP session negotiation, confirms that the other side supports label strategy transmitting-receiving ability, comprising:
Described P equipment that is arranged in core net and the described PE equipment that is positioned at Access Layer send the initial message that carries the sign position of supporting label strategy transmitting-receiving ability in LDP session negotiation process to the other side; And receive the initial message that the other side sends, when carrying the sign position of supporting label strategy transmitting-receiving ability in the described initial message, confirm that the other side supports label strategy transmitting-receiving ability.
Wherein, the described P equipment that is positioned at core net receives the label strategy of going into of described PE equipment that the PE equipment that is positioned at Access Layer sends, comprising:
The described routing device P equipment that is positioned at core net receives the label request message that the described PE equipment that is positioned at Access Layer sends, and obtains the label strategy of going into of described PE equipment that described label request message carries.
The present invention also provides the routing device in a kind of MPLS network, is applied to comprise in the MPLS network:
Role's judging unit is used to judge that self-role is the PE equipment that is positioned at the P equipment of core net or is positioned at Access Layer;
PE device role processing unit, be used for when described role's judgment unit judges from when being positioned at the PE equipment of Access Layer, generate and carry the message of self going into label strategy; And described message sent to the P equipment that the opposite end is positioned at core net;
P device role processing unit, be used for when described role's judgment unit judges from as the P equipment of core net the time, if receive the label strategy of going into that the PE equipment that is positioned at Access Layer sends, then with described PE equipment go into label strategy as local outgoing label strategy, the label for the treatment of to described PE devices advertise according to described local outgoing label strategy filters; And label after will filtering, that meet described local outgoing label strategy sends to described PE equipment.
Wherein, also comprise:
The capability negotiation unit, be used for when described role's judgment unit judges from when being positioned at the PE equipment of Access Layer, carry out the LDP session negotiation with the P equipment that is positioned at core net of opposite end, confirm that the other side supports label strategy transmitting-receiving ability; When described role's judgment unit judges from as the P equipment of core net the time, carry out the LDP session negotiation with the PE equipment that is positioned at Access Layer of opposite end, confirm that the other side supports label strategy transmitting-receiving ability.
Wherein, described capability negotiation unit specifically is used for:
In LDP session negotiation process, send the initial message that carries the sign position of supporting label strategy transmitting-receiving ability to the other side; And receive the initial message that the other side sends, when carrying the sign position of supporting label strategy transmitting-receiving ability in the described initial message, confirm that the other side supports label strategy transmitting-receiving ability.
Wherein, described P device role processing unit specifically is used for:
When receiving the label request message that the PE equipment that is positioned at Access Layer sends, obtain the label strategy of going into of described PE equipment that described label request message carries.
Compared with prior art, the present invention has the following advantages:
P equipment is gone into label strategy as local outgoing label strategy with what PE equipment sent, and the label for the treatment of announcement according to this this locality outgoing label strategy filters, and the label that only will meet local outgoing label strategy sends to PE equipment.Thereby reduced the influence of the quantity of the label protocol message that transmits between the equipment in the network and label vibration, optimized network environment, saved Internet resources, the less burden of the network equipment equipment.
Description of drawings
Fig. 1 is the structural representation of the MPLS network used among the present invention;
Fig. 2 is the flow chart of the method that sends of the control label that provides among the present invention;
Fig. 3 is the schematic diagram that carries the request message format of POLICY TLV among the present invention;
Fig. 4 is the schematic diagram of the form of POLICY TLV among the present invention;
Fig. 5 is the structural representation of the routing device in the MPLS network that provides among the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described.
The core concept of the control label sending method that provides among the present invention is, local terminal equipment is gone into label strategy as local outgoing label strategy with what opposite equip. sent, the label for the treatment of announcement according to this this locality outgoing label strategy filters, and the label that only will meet local outgoing label strategy sends to opposite equip..Below MPLS (Multi-Protocol Label Switching, the multiprotocol label switching) network scenarios of at first the present invention being used is introduced.
MPLS is as a kind of classification transmission technology, and the grouping that will have identical forwarding processing mode is classified as a class, and the processing that is grouped in the MPLS network that is called the identical FEC of FEC (Forwarding Equivalence Class, forwarding equivalence class) is identical.The dividing mode of FEC is very flexible, can be to serve as the combination in any of division foundation with source address, destination address, source port, destination interface, protocol type or VPN etc.For example, in traditional employing during the IP of long matching algorithm transmits, be exactly a FEC to all messages of same destination address.
Label is that a length is fixed, and only has the short identifier of local significance, is used for the affiliated FEC of grouping of unique identification.A label can only be represented a FEC.The path of FEC process in the MPLS network is called LSP (Label Switched Path, label switched path).On a LSP, along the direction that data transmit, adjacent LSR is called upstream LSR and downstream LSR.The LDP session is used for message such as switch label mapping, release between LSR.
LDP peer (being also referred to as LDP neighbours) is meant and exists LDP session, use LDP to come two LSR of switch label/FEC mapping relations each other.LDP peer obtains the other side's label mapping message by the LDP session between them.The process of setting up of LSP is actual binds FEC and label, and this binding is announced to adjacent LSR exactly, so that set up the process of Label Forwarding Information Base on LSR.On packet forwarding path, the transmit leg router of packet is the upstream LSR of a LSP, and recipient's router is downstream LSR.Downstream LSR is distributed to upstream LSR with label after specific label is distributed to specific FEC (being label binding); Upstream LSR preserves the binding relationship of label and FEC.Receive the grouping of certain FEC as upstream LSR after, adding downstream LSR for grouping is this FEC distributed labels, and is transmitted to downstream LSR.
For the MPLS network, as shown in Figure 1, mainly form by three kinds of equipment:
CE: user network boundary device directly links to each other with PE by interface.CE " perception " does not need to support MPLS less than the existence of VPN yet.
PE: service provider edge router is the edge device of service provider network, directly links to each other with CE.In the MPLS network, all processing of VPN are all occurred on the PE.PE is responsible for that VPN user managed, sets up LSP between each PE and connects, route is assigned between each branch of same VPN user.
The P router: the P in the service provider network does not directly link to each other with CE.The P device just will possess basic MPLS transfer capability, only according to outer layer label the VPN message is carried out MPLS and transmits, and need not participate in the establishment and the maintenance of VPN user management and relevant entries.
According to shown in Figure 1, be positioned at the PE equipment of Access Layer, only need know the part label information in the core net, for this reason, realization of the prior art is that label strategy is gone in configuration on Access Layer PE equipment, by going into the label information that P equipment sends in the policy filtering core net, only keeps the label information that needs, the PE equipment of the P equipment of core net and the Access Layer label information of bulk redundancy has alternately consumed Internet resources like this.
To this, the invention provides a kind of method that label sends of controlling, the equipment that is connected in the MPLS network is when setting up LDP neighbours, confirm that both sides possess label strategy transmitting-receiving ability, local terminal equipment can send to opposite equip. with the label strategy of going into of this locality afterwards, opposite equip. uses the label strategy that receives that the label that will send is filtered, and only the label with matching strategy sends to local terminal equipment.
As shown in Figure 2, the method for control label transmission provided by the invention comprises:
Step s201, the P equipment that is arranged in core net receive the label strategy of going into of this PE equipment that the PE equipment be positioned at Access Layer sends.
Step s202, P equipment are gone into label strategy as local outgoing label strategy with what PE equipment sent, and the label for the treatment of to the PE devices advertise according to this this locality outgoing label strategy filters, and the label that only will meet local outgoing label strategy sends to PE equipment.
Below in conjunction with concrete application scenarios, the method that the control label that provides among the present invention is sent is described in detail.Be example with as shown in Figure 1 MPLS network still, the private network message need carry out transparent transmission by the public network tunnel between the PE of two ends.Setting up in the process of LDP LSP public network tunnel, PE device just will be learnt the label of the corresponding FEC of opposite end PE equipment loopback port address (hypothesis be 118.1.1.1) here, do not need on the P equipment other label information.In the application scenarios of the present invention, by configuration Inbound label strategy (FEC of 118.1.1.1/32 can pass through) on PE equipment, PE equipment and the P equipment of having set up the LDP session are possessing under the label transmitting-receiving ability situation, PE equipment is gone into label strategy with this locality and is announced the equipment to P, after P equipment receives label strategy, with its outgoing label strategy as this locality, the label information that filtration will be announced, only announcement meets the label information (label information of 118.1.1.1 correspondence) of strategy for PE equipment, PE equipment is set up the LSP path after receiving label information, and the private network message passes through opposite end PE by lsp tunnel after pressing the private network tags of distribution.Below respectively the each part mentioned above flow process is described in detail:
(1) PE equipment and P equipment are set up the LDP session, become LDP peer; The LDP session is used for message such as switch label mapping, release between LSR.
It is as follows to set up process: wish that the LSR (PE equipment or P equipment) that sets up session periodically sends Hello message to adjacent LSR, the existence of notice adjacent node oneself.By this process, LSR can find its LDP peer automatically, and need not to carry out manual configuration.Find after the neighbours, setting up TCP between the LSR connects, and initialization is carried out in the session between the LSR by mutual initialization (Initialization) message, the various parameters that relate in the consulting session are as LDP version, label distribution mode, timer value, Label space etc.
Among the present invention, TLV (the Type/length/Value of optional parameters in Initialization message, type) in, increase a strategy and support flag bit, when LDP peer both sides (PE equipment and P equipment is the other side's LDP peer each other) carry out LDP SESSION initialization negotiation, whether consult by this TLV that both sides support label strategy transmitting-receiving ability, if both sides all support, illustrate that then the peer-to-peer both sides of this LDPSESSION can transmit label strategy.If the either party among the both sides does not support this label strategy transmitting-receiving ability, then can't use the method that provides among the present invention.
(2) PE equipment transmits label strategy to P equipment.
After the LDP SESSION that supports label strategy to transmit set up successfully, upstream LSR transmitted label strategy by Labelrequest message.In the request message, increase POLICY TLV, label strategy is encapsulated.The request message format that carries POLICY TLV as shown in Figure 3.
Concrete POLICY TLV form as shown in Figure 4, wherein 0X0105 is the Type value of the POLICY of expansion, other each field implication is as follows:
Sequence: specified the sequence number of this prefix information in whole prefix ORF information;
Minlen: having specified the shortest prefix length of coupling prefix, is 0 when not disposing;
Maxlen: having specified the longest-prefix length of coupling, is 0 when not disposing;
Length: the mask-length of having specified the coupling prefix;
Prefix: specified the prefix that needs coupling.
With above-mentioned Inbound label strategy 118.1.1.1/32 is example, and then in POLICY TLV, the Sequence field is automatic apportioning cost; The value of Minlen field is 0; The value of Maxlen field is 0; The value of Length field is 32; The value 118.1.1.1 of Prefix field.When the mask-length of coupling prefix when variable, the mask-length that value that can also be by Minlen/Maxlen is set is used during to coupling is provided with.
(3) P matched strategy sends label.
When P equipment sends label,, also need to filter to sent label, only qualified label is sent to PE equipment according to label strategy from the reception of PE equipment except the label according to this locality configuration goes out strategy to sent label filters.
Need to prove, when P equipment is connected with a plurality of PE equipment, can receive the label strategy that a plurality of PE equipment send, when certain PE equipment sends label, the label strategy of this PE equipment is gone out strategy as label filter to sent label at needs.For P equipment, from there not being conflict between the label strategy of a plurality of PE equipment.
In the above-mentioned application scenarios of the present invention, P equipment is gone into label strategy as local outgoing label strategy with what PE equipment sent, and the label for the treatment of announcement according to this this locality outgoing label strategy filters, and the label that only will meet local outgoing label strategy sends to PE equipment.Thereby the quantity and the core net label that have reduced label protocol message between network vibrate to the influence of access device, even the core net label vibrates continually, the strategy as long as these labels do not match just can not send to access layer equipment.Therefore optimize network environment, saved Internet resources, reduced the burden of equipment of the core network.In addition, when Access Layer PE equipment existed many uplink loads to share, PE equipment can push away to many P equipment simultaneously with going into label strategy, controls these P equipment and sends to the label of oneself, reach an equipment disposition strategy, the purpose of control multiple devices label distribution.
The present invention also provides the routing device in a kind of MPLS network, and this routing device is applied in the MPLS network, and as shown in Figure 5, this routing device 1 comprises:
Role's judging unit 10 is used to judge that self-role is the PE equipment that is positioned at the P equipment of core net or is positioned at Access Layer;
PE device role processing unit 20 is used for judging from when being positioned at the PE equipment of Access Layer when role's judging unit 10, generates and carries the message of self going into label strategy; And message sent to the P equipment that the opposite end is positioned at core net;
P device role processing unit 30, be used for judging from the time as the P equipment of core net when role's judging unit 10, if receive the label strategy of going into that the PE equipment that is positioned at Access Layer sends, then with PE equipment go into label strategy as local outgoing label strategy, the label for the treatment of to the PE devices advertise according to local outgoing label strategy filters; And label after will filtering, that meet local outgoing label strategy sends to PE equipment.Concrete, when receiving the label request message that the PE equipment that is positioned at Access Layer sends, obtain the label strategy of going into of PE equipment that label request message carries.
In addition, this routing device 1 also comprises:
Said method that the application of the invention provides and equipment, P equipment receive that PE equipment sends go into label strategy the time, go into label strategy as local outgoing label strategy with what PE equipment sent, the label for the treatment of announcement according to this this locality outgoing label strategy filters, and the label that only will meet local outgoing label strategy sends to PE equipment.Thereby reduced the influence of the quantity of the label protocol message that transmits between the equipment in the network and label vibration, optimized network environment, saved Internet resources, the less burden of the network equipment equipment.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, unit in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the unit in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.A unit can be merged in the unit of the foregoing description, also can further split into a plurality of subelements.
The invention described above embodiment sequence number is not represented the quality of embodiment just to description.
Claims (8)
1, a kind of method of controlling the label transmission is applied to it is characterized in that described method comprises in the multiprotocol label switching MPLS network:
The routing device P equipment that is positioned at core net receives the label strategy of going into of described PE equipment that the routing device PE equipment be positioned at Access Layer sends;
Described P equipment is gone into label strategy as local outgoing label strategy with what described PE equipment sent, the label for the treatment of to described PE devices advertise according to described local outgoing label strategy filters, and the label that only will meet described local outgoing label strategy sends to described PE equipment.
2, the method for claim 1 is characterized in that, the described P equipment that is positioned at core net receive described PE equipment that the PE equipment that is positioned at Access Layer sends go into label strategy before, also comprise:
Described P equipment and the described PE equipment that is positioned at Access Layer that is positioned at core net carries out tag distribution protocol LDP session negotiation, confirms that the other side supports label strategy transmitting-receiving ability.
3, method as claimed in claim 2 is characterized in that, described P equipment and the described PE equipment that is positioned at Access Layer that is positioned at core net carries out the LDP session negotiation, confirms that the other side supports label strategy transmitting-receiving ability, comprising:
Described P equipment that is arranged in core net and the described PE equipment that is positioned at Access Layer send the initial message that carries the sign position of supporting label strategy transmitting-receiving ability in LDP session negotiation process to the other side; And receive the initial message that the other side sends, when carrying the sign position of supporting label strategy transmitting-receiving ability in the described initial message, confirm that the other side supports label strategy transmitting-receiving ability.
As claim 1 or 2 or 3 described methods, it is characterized in that 4, the described P equipment that is positioned at core net receives the label strategy of going into of described PE equipment that the PE equipment that is positioned at Access Layer sends, comprising:
The described routing device P equipment that is positioned at core net receives the label request message that the described PE equipment that is positioned at Access Layer sends, and obtains the label strategy of going into of described PE equipment that described label request message carries.
5, the routing device in a kind of MPLS network is characterized in that, is applied to comprise in the MPLS network:
Role's judging unit is used to judge that self-role is the PE equipment that is positioned at the P equipment of core net or is positioned at Access Layer;
PE device role processing unit, be used for when described role's judgment unit judges from when being positioned at the PE equipment of Access Layer, generate and carry the message of self going into label strategy; And described message sent to the P equipment that the opposite end is positioned at core net;
P device role processing unit, be used for when described role's judgment unit judges from as the P equipment of core net the time, if receive the label strategy of going into that the PE equipment that is positioned at Access Layer sends, then with described PE equipment go into label strategy as local outgoing label strategy, the label for the treatment of to described PE devices advertise according to described local outgoing label strategy filters; And label after will filtering, that meet described local outgoing label strategy sends to described PE equipment.
6, equipment as claimed in claim 5 is characterized in that, also comprises:
The capability negotiation unit, be used for when described role's judgment unit judges from when being positioned at the PE equipment of Access Layer, carry out the LDP session negotiation with the P equipment that is positioned at core net of opposite end, confirm that the other side supports label strategy transmitting-receiving ability; When described role's judgment unit judges from as the P equipment of core net the time, carry out the LDP session negotiation with the PE equipment that is positioned at Access Layer of opposite end, confirm that the other side supports label strategy transmitting-receiving ability.
7, equipment as claimed in claim 6 is characterized in that, described capability negotiation unit specifically is used for:
In LDP session negotiation process, send the initial message that carries the sign position of supporting label strategy transmitting-receiving ability to the other side; And receive the initial message that the other side sends, when carrying the sign position of supporting label strategy transmitting-receiving ability in the described initial message, confirm that the other side supports label strategy transmitting-receiving ability.
As claim 5 or 6 or 7 described equipment, it is characterized in that 8, described P device role processing unit specifically is used for:
When receiving the label request message that the PE equipment that is positioned at Access Layer sends, obtain the label strategy of going into of described PE equipment that described label request message carries.
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| CN200910180548A CN101656740A (en) | 2009-10-20 | 2009-10-20 | Method and routing equipment for controlling label sending |
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| CN200910180548A CN101656740A (en) | 2009-10-20 | 2009-10-20 | Method and routing equipment for controlling label sending |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102130835A (en) * | 2011-03-18 | 2011-07-20 | 中兴通讯股份有限公司 | Method, device and system for transmitting bridge protocol data unit (BPDU) message |
| CN102387060A (en) * | 2010-08-31 | 2012-03-21 | 杭州华三通信技术有限公司 | Building method and device for label switched path tunnels |
| CN104243311A (en) * | 2013-06-08 | 2014-12-24 | 华为技术有限公司 | Message processing method and router thereof |
| CN105634949A (en) * | 2014-10-31 | 2016-06-01 | ***通信集团公司 | Network label distribution method, device, system and network equipment |
| CN107979619A (en) * | 2016-10-21 | 2018-05-01 | 中兴通讯股份有限公司 | A kind of TWAMP session negotiation methods, client and server-side |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102387060A (en) * | 2010-08-31 | 2012-03-21 | 杭州华三通信技术有限公司 | Building method and device for label switched path tunnels |
| CN102387060B (en) * | 2010-08-31 | 2015-02-11 | 杭州华三通信技术有限公司 | Building method and device for label switched path tunnels |
| CN102130835A (en) * | 2011-03-18 | 2011-07-20 | 中兴通讯股份有限公司 | Method, device and system for transmitting bridge protocol data unit (BPDU) message |
| CN108632146B (en) * | 2013-06-08 | 2021-03-23 | 华为技术有限公司 | Entropy label capacity sending and receiving method and label switching router |
| CN104243311A (en) * | 2013-06-08 | 2014-12-24 | 华为技术有限公司 | Message processing method and router thereof |
| US11606289B2 (en) | 2013-06-08 | 2023-03-14 | Huawei Technologies Co., Ltd. | Packet processing method and router |
| US9942136B2 (en) | 2013-06-08 | 2018-04-10 | Huawei Technologies Co., Ltd. | Packet processing method and router |
| US10965590B2 (en) | 2013-06-08 | 2021-03-30 | Huawei Technologies Co., Ltd. | Packet processing method and router |
| CN104243311B (en) * | 2013-06-08 | 2018-05-25 | 华为技术有限公司 | The method and router of Message processing |
| CN108632146A (en) * | 2013-06-08 | 2018-10-09 | 华为技术有限公司 | The method and router of Message processing |
| US10326693B2 (en) | 2013-06-08 | 2019-06-18 | Huawei Technologies Co., Ltd. | Packet processing method and router |
| CN105634949B (en) * | 2014-10-31 | 2019-01-01 | ***通信集团公司 | A kind of network tab distribution, device, system and the network equipment |
| CN105634949A (en) * | 2014-10-31 | 2016-06-01 | ***通信集团公司 | Network label distribution method, device, system and network equipment |
| CN107979619A (en) * | 2016-10-21 | 2018-05-01 | 中兴通讯股份有限公司 | A kind of TWAMP session negotiation methods, client and server-side |
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Application publication date: 20100224 |