CN100484079C - Method for assuring second-level runner public-network bandwidth, route and system thereof - Google Patents
Method for assuring second-level runner public-network bandwidth, route and system thereof Download PDFInfo
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- CN100484079C CN100484079C CNB2007100739403A CN200710073940A CN100484079C CN 100484079 C CN100484079 C CN 100484079C CN B2007100739403 A CNB2007100739403 A CN B2007100739403A CN 200710073940 A CN200710073940 A CN 200710073940A CN 100484079 C CN100484079 C CN 100484079C
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Abstract
The method comprises: on the local end users' edge router, the level 2 public network tunnel information that is the edge router of local end service-provider is the next hopping and its destination address is the edge router of the opposite end user; according to the level 2 public network tunnel information, making path calculation hopping by hopping, and sending the path message of resource reserving protocol; after the path calculation succeeds, the opposite end edge router returns the reserving message of resource reserving protocol hopping by hopping according to the level 2 public network tunnel nodes; after the local end edge router receives the reserving message of said resource reserving protocol, said level 2 public network tunnel is successfully established and gets the applied reserving resources.
Description
Technical field
The present invention relates to tag switching, relate in particular to a kind of operator at non-cross-domain multi-protocol label switching three-layer Virtual Private Network (BGP/MPLS L3VPN) operator (Carrier ' s Carrier, CSC) in the networking, the method and system that assures second-level runner public-network bandwidth.
Background technology
In BGP/MPLS L3VPN, can realize operator operator (Carrier ' s Carrier, CSC) networking.In the existing C SC technology, can realize that bandwidth guarantees with tunnel tunnel between the one-level operator, but only be between the second-level runner with tag distribution protocol (Label Distribution Protocol, LDP) set up label switched path (Label Switch Path, LSP) realize simple label forwarding, can not provide bandwidth to guarantee.
As shown in Figure 1, be CSC networking mode schematic diagram in the prior art.Wherein, provider edge router (Provider Edge, PE) PE1, PE2 have represented the one-level carrier network of L3VPN, Customer Edge router (Customer Edge, CE) CE1, CE2 have represented the second-level runner network of L3VPN, and P is the ordinary node in the network.In order to realize the label forwarding between the second-level runner, enable the LDP agreement between CE1-PE1 and the CE2-PE2, between CE1-CE2, will generate the LDP lsp tunnel (PE1-PE2 tunnel) of an one-level operator private network so, CE1, CE2 can use the public network tunnel of this LDP lsp tunnel as secondary L3VPN (Layer3 Virtual Private Network), thereby carry out secondary L3VPN forwarding of data.But this LDP LSP has only the function of label exchange, the function that does not have bandwidth to guarantee, and when network congestion, the data of secondary L3VPN are dropped probably.
Summary of the invention
In order to realize that between second-level runner public-network bandwidth guarantees, the embodiment of the invention discloses a kind of method that assures second-level runner public-network bandwidth, router and system.
The described method of the embodiment of the invention comprises:
Configuration local terminal provider edge router is that next jumping and destination address are the secondary public network tunnel information of opposite end Customer Edge router on the local terminal Customer Edge router;
According to the secondary public network tunnel information of described configuration, hop-by-hop carries out path computing and sends the RSVP PATH, and described secondary public network tunnel information comprises the desired bandwidth in tunnel;
After the path computing success, the opposite end Customer Edge router returns the RSVP reserving message according to the node hop-by-hop in described secondary public network tunnel;
After the local terminal Customer Edge router was received described RSVP reserving message, the application reserved resource was set up successfully and is obtained in described secondary public network tunnel.
Wherein, described secondary public network tunnel passes through and is exclusively used in the one-level public network tunnel of regulating the secondary public-network bandwidth between local terminal provider edge router and the opposite end provider edge router.
Wherein, described method also comprises the step of setting up the RSVP neighborhood:
Described local terminal Customer Edge router and local terminal provider edge router, opposite end Customer Edge router and opposite end provider edge router are set up the RSVP neighborhood respectively;
Described local terminal provider edge router and opposite end provider edge router are set up far-end RSVP neighborhood.
Wherein, described method comprises that also local terminal provider edge router, local terminal Customer Edge router, opposite end provider edge router, opposite end Customer Edge router collect the step of this side website traffic engineering information respectively:
Router sends to all websites of this side and carries the LSA of traffic engineering information;
The website of receiving described LSA sends corresponding link state bulletin to described router;
Described router adds corresponding website and traffic engineering information in the traffic engineering database of self maintained to according to the LSA that receives.
Wherein, the described hop-by-hop step of carrying out path computing and sending the RSVP PATH specifically comprises:
The local terminal Customer Edge router is according to the secondary public network tunnel of described configuration, calculate the path of local terminal provider edge router after, send the RSVP PATH to the local terminal provider edge router;
The local terminal provider edge router finds the opposite end provider edge router in this locality, and judge if there is not one-level public network tunnel between local terminal provider edge router and opposite end provider edge router, then the local terminal provider edge router automatically set up and the opposite end provider edge router between one-level public network tunnel, if there has been one-level public network tunnel between local terminal provider edge router and opposite end provider edge router, then increase the bandwidth in described one-level public network tunnel according to the RSVP PATH that oneself receives;
The local terminal provider edge router sends the RSVP PATH to the opposite end provider edge router;
The opposite end provider edge router is received the RSVP PATH that the local terminal provider edge router sends, calculate the path of opposite end Customer Edge router after, send the RSVP PATH to the opposite end Customer Edge router.
Wherein, described local terminal provider edge router finds the opposite end provider edge router and specifically is meant in this locality:
The local terminal provider edge router is according to the secondary public network tunnel of described configuration, in the traffic engineering database of self maintained, after searching the failure of opposite end provider edge router according to the secondary public network tunnel of described configuration, in the VPN route table of self maintained, search the opposite end provider edge router.
Wherein, described path computing is according to the information in the traffic engineering database of Customer Edge router or provider edge router self maintained, uses private network to finish based on the shortest-path first algorithm CSPF that retrains.
Wherein, described method also is included in after described secondary public network tunnel sets up successfully, and the opposite end provider edge router is the step of described secondary public network tunnel distributing label.
The described router of the embodiment of the invention comprises:
Receiver module is used to receive the RSVP PATH, and obtains tunnel configuration information wherein, and described tunnel configuration information comprises the desired bandwidth of tunnel node and tunnel;
First memory module is used to store traffic engineering database, and described traffic engineering database comprises the traffic engineering information of described all websites of this side of router, and is used for the next-hop node according to this tunnel of described tunnel configuration information inquiry;
Path calculation module is used to calculate the path between this router and described next-hop node;
Second memory module is used to store the VPN route table, when not comprising the next-hop node in this tunnel in the traffic engineering database of described first memory module, searches the next-hop node in this tunnel in described VPN route table;
First judge module is used for judging this router and the described public network tunnel that whether exists between the next-hop node in this tunnel that the VPN route table finds, described public network tunnel is used to guarantee the bandwidth in described tunnel;
The tunnel adjustment module when having the public network tunnel between this router and the described next-hop node that finds this tunnel in the VPN route table, is used for increasing according to described tunnel configuration information the bandwidth in described public network tunnel; When not having the public network tunnel between the next-hop node in this router and described this tunnel that in the VPN route table, finds, be used between this router and described next-hop node, setting up the public network tunnel;
Second judge module is when described public network tunnel is set up successfully or after described public network tunnel increases the bandwidth success, is used to judge whether set up the RSVP neighborhood between this router and the next-hop node;
Sending module in the path computing process, is used to send the RSVP PATH; After path computing is finished, be used to send the RSVP reserving message.
The described second-level runner of embodiment of the invention system comprises local terminal Customer Edge router, opposite end Customer Edge router, local terminal provider edge router and opposite end provider edge router, it is characterized in that:
Described local terminal Customer Edge router, be used for according to tunnel configuration information calculations between local terminal Customer Edge router and the opposite end Customer Edge router and the path between the local terminal provider edge router, and send the RSVP PATH to the local terminal provider edge router;
Described local terminal provider edge router, the RSVP PATH that is used for sending according to the local terminal Customer Edge router set up the public network tunnel with the opposite end provider edge router or be used to this section provider edge router of having existed and the opposite end provider edge router between public network tunnel increase bandwidth, described public network tunnel is used to guarantee the bandwidth in the tunnel between local terminal Customer Edge router and the opposite end Customer Edge router;
Described opposite end provider edge router is used for the path between calculating itself and the opposite end Customer Edge router;
Described opposite end Customer Edge router after receiving the RSVP PATH that the opposite end provider edge router sends, is used for sending the RSVP reserving message to the opposite end provider edge router.
Wherein, described local terminal Customer Edge router, opposite end Customer Edge router, local terminal provider edge router and opposite end provider edge router also are used to collect the traffic engineering information of all websites of this side, form and safeguard local traffic engineering database.
The above embodiment of the present invention by set up multi-protocol label switching traffic engineering tunnel MPLS TE Tunnel between the Customer Edge router of one-level operator, has realized that the public-network bandwidth of second-level runner guarantees.
Description of drawings
Fig. 1 is a CSC networking mode schematic diagram in the prior art;
Fig. 2 is the flow chart of the described method that assures second-level runner public-network bandwidth of the embodiment of the invention;
Fig. 3 is the method flow diagram that calculates the second-level runner public-network tunnel path in the embodiment of the invention;
Fig. 4 is the structural representation of router in the embodiment of the invention.
Embodiment
The invention will be further described but should not regard limitation of the present invention as below in conjunction with the drawings and specific embodiments.
Still be that example describes with the system shown in Figure 1.Provider edge router PE1, PE2 have represented the one-level operator of BGP/MPLS L3VPN, and Customer Edge router CE1, CE2 have represented second-level runner, and P is an ordinary node.In the embodiment of the invention, provide secondary public network tunnel by between second-level runner (CE1-CE2), using multi-protocol label switching traffic engineering tunnel (MPLS TE Tunnel), thereby guarantee the bandwidth of secondary public network.As shown in Figure 2, the flow chart of the method that assures second-level runner public-network bandwidth for the embodiment of the invention is described.The described method of present embodiment comprises the steps:
It is that destination address, path are the secondary public network tunnel of C1-PE1-PE2-CE2 that step 210, user are configured to CE2 to CE1, and this secondary public network tunnel is designated as Tunnel a; In the process in this secondary public network tunnel of configuration, must be next loose or strict jumping for CE1 specifies PE1; And in configured tunneling technique, should dispose the needed bandwidth in this tunnel.
Between CE1-PE1, utilize the many examples of RSVP to set up RSVP Peer relation by PE1, between CE2-PE2, utilize the many examples of RSVP to set up RSVP Peer relation by PE2, when a PE manages a plurality of virtual private networks (Virtual Private Network, VPN) time, PE will safeguard the RSVP Peer under each VPN.The Remote RSVP Peer that sets up between PE1 and the PE2 is mainly used to handle the RSVP signaling, sends PSVP path (path) message as PE1 to PE2, and PE2 sends rsvp reservation (resv) message etc. to PE1.
Because each PE may manage a plurality of VPN, so, each VPN on PE1 and the PE2 needs to dispose a LSR (Label Switch Router, LSR) sign LSR-ID is used for setting up the private network tunnel, simultaneously, to enable Interior Gateway Protocol (Interior Gateway Protocol, IGP) many examples on PE1 and the PE2, can reach with assurance the whole network route, and PE to be that self-administered each VPN safeguards a TEDB.
When collecting the TEDB of local sites, PE sends IGP LSA (the Link StateAdverti sement of TE expansion to local all site, LSA, be applied in the ospf protocol) or IGP Link State Packet (Link State PDU, perhaps Link State Protocol Data Unit, LSP is applied in the ISIS agreement), local all site receive IGP LSA LSA or the IGP Link State Packet LSP that also expands to PE transmission TE behind the LSA of PE transmission, after PE receives this message, search its pairing VPN according to the port that receives site, then the TE information of this site correspondence is added among the TEDB of this VPN correspondence.
The step of TEDB that CE collects local sites is similar.After certain site sends the LSA/LSP message of TE expansion to CE, because CE is transparent to VPN, so CE is as long as add the TE information of this site correspondence among the TEDB of self maintained just passable.
In order to finish path computing, must enable MPLS TE and RSVP between the public network tunnel between the PE1-PE2, must set up far-end RSVP neighbours Remote RSVP Peer between the PE1-PE2.
Referring to accompanying drawing 3, calculate the method flow diagram of second-level runner public-network tunnel path in the embodiment of the invention, specifically may further comprise the steps:
After step 242, PE1 receive above-mentioned RSVP Path message, in local TEDB, search the destination address of Tunnela, i.e. CE2 and handling accordingly.If PE1 can find CE2 in TEDB, CE2 is described in the sites of this locality, PE1 is just passable as long as carry out path computing according to private network CSPF algorithm.But in the present embodiment, CE2 is not in the local sites of PE1, and then PE searches local VPN route table, determines that next jumping of Tunnel a is PE2.
After step 243, PE1 determine that next jumping of Tunnel a is PE2, judge whether to exist a special public network tunnel PE1-PE2 (hereinafter referred to as Tunnel A), if Tunnel A exists, system increases the bandwidth of Tunnnel A according to the requirement (being embodied in the RSVP Path message) of user configured Tunnel a, if there is no Tunnel A is then created by PE1;
Tunnel A is that (Constraint-basedLSP CR-LSP), adds/delete, increases bandwidth by system to a special label switched path based on the constraint route automatically.Tunnel A only is the private network tunnel service, does not participate in the route of public network and calculates.Tunnel A shares for many private network tunnels of a plurality of VPN between the PE1-PE2.
After step 246, PE2 receive the RSVP Path message of PE1 transmission, judge whether oneself has set up far-end RSVP neighbours Remote RSVP Peer with PE1, if set up the far-end neighbor relation, execution in step 247, otherwise, PE2 returns Path Error message to PE1, and notice Tunnela sets up unsuccessful;
So far, the path computing of secondary public network tunnel Tunnel a success.
After step 250, CE2 received the RSVP Path message of PE2 transmission, according to the node on the Tunnel a path, hop-by-hop returned RSVP RSVP Resv message on the way.
After step 260, CE1 receive the RSVP RSVP Resv message of PE1 transmission, confirm that Tunnel a sets up and resource reservation application success, can carry out message and send.
The embodiment of the invention also discloses a kind of router, as shown in Figure 4, the structural representation for the described router of the embodiment of the invention comprises:
Receiver module is used to receive the RSVP PATH, and obtains tunnel configuration information wherein, and described tunnel configuration information comprises the desired bandwidth of tunnel node and tunnel;
First memory module is used to store traffic engineering database, and described traffic engineering database comprises the traffic engineering information of described all websites of this side of router, and is used for the next-hop node according to this tunnel of described tunnel configuration information inquiry;
Path calculation module is used to calculate the path between this router and described next-hop node;
Second memory module is used to store the VPN route table, when not comprising the next-hop node in this tunnel in the traffic engineering database of described first memory module, searches the next-hop node in this tunnel in described VPN route table;
First judge module is used for judging this router and the described public network tunnel that whether exists between the next-hop node in this tunnel that the VPN route table finds, described public network tunnel is used to guarantee the bandwidth in described tunnel;
The tunnel adjustment module when having the public network tunnel between this router and the described next-hop node that finds this tunnel in the VPN route table, is used for increasing according to described tunnel configuration information the bandwidth in described public network tunnel; When not having the public network tunnel between the next-hop node in this router and described this tunnel that in the VPN route table, finds, be used between this router and described next-hop node, setting up the public network tunnel;
Second judge module is when described public network tunnel is set up successfully or after described public network tunnel increases the bandwidth success, is used to judge whether set up the RSVP neighborhood between this router and the next-hop node;
Sending module in the path computing process, is used to send the RSVP PATH; After path computing is finished, be used to send the RSVP reserving message.
Wherein, the path between described this router of calculating and described next-hop node specifically is meant the traffic engineering information according to this next-hop node, utilize based on constraint shortest-path first algorithm carry out path computing.
The embodiment of the invention also discloses a kind of second-level runner system.Comprise local terminal Customer Edge router, opposite end Customer Edge router, local terminal provider edge router and opposite end provider edge router, wherein:
The local terminal Customer Edge router is used for according to tunnel configuration information calculations between local terminal Customer Edge router and the opposite end Customer Edge router and the path between the local terminal provider edge router, and sends the RSVP PATH to the local terminal provider edge router;
The local terminal provider edge router is used for the RSVP PATH that sends according to the local terminal Customer Edge router and the opposite end provider edge router is set up the public network tunnel or be used to this section provider edge router and the public network tunnel between the provider edge router of opposite end that have existed to increase bandwidth, and described public network tunnel is used to guarantee the bandwidth in the tunnel between local terminal Customer Edge router and the opposite end Customer Edge router;
The opposite end provider edge router is used for the path between calculating itself and the opposite end Customer Edge router;
The opposite end Customer Edge router sends the RSVP reserving message to the opposite end provider edge router after receiving the RSVP PATH that the opposite end provider edge router sends.
And described local terminal Customer Edge router, opposite end Customer Edge router, local terminal provider edge router and opposite end provider edge router also are used to collect the traffic engineering information of all websites of this side, form and safeguard local traffic engineering database.
The above embodiment of the present invention, between PE-CE, use in the CSC networking of BGP/MPLS L3VPN of the many examples of IGP (the many examples of non-Border Gateway Protocol (BGP)), by between the Customer Edge router of one-level operator, setting up multi-protocol label switching traffic engineering tunnel MPLSTETunnel, realized that the public-network bandwidth of second-level runner guarantees.
Above-described embodiment is a more preferably embodiment of the present invention, and common variation that those skilled in the art carries out in the technical solution of the present invention scope and replacement all should be included in protection scope of the present invention.
Claims (11)
1, the method that assures second-level runner public-network bandwidth in a kind of non-cross-domain multi-protocol label switching three-layer Virtual Private Network is characterized in that, may further comprise the steps:
Configuration local terminal provider edge router is that next jumping and destination address are the secondary public network tunnel information of opposite end Customer Edge router on the local terminal Customer Edge router, and described secondary public network tunnel passes through and is exclusively used in the one-level public network tunnel of regulating the secondary public-network bandwidth between local terminal provider edge router and the opposite end provider edge router;
The local terminal Customer Edge router is according to the secondary public network tunnel information of described configuration, after calculating the path of local terminal provider edge router, send the RSVP PATH to the local terminal provider edge router, the local terminal provider edge router sends the RSVP PATH to the opposite end provider edge router, the opposite end provider edge router is received the RSVP PATH that the local terminal provider edge router sends, after calculating the path of opposite end Customer Edge router, send the RSVP PATH to the opposite end Customer Edge router, described secondary public network tunnel information comprises the desired bandwidth in tunnel;
After the path computing success, the opposite end Customer Edge router returns the RSVP reserving message according to the node hop-by-hop in described secondary public network tunnel;
After the local terminal Customer Edge router was received described RSVP reserving message, the application reserved resource was set up successfully and is obtained in described secondary public network tunnel.
2, method according to claim 1, it is characterized in that, the described local terminal provider edge router that disposes on the local terminal Customer Edge router is that next jumping and destination address are the secondary public network tunnel information of opposite end Customer Edge router, and described secondary public network tunnel passes through the one-level public network tunnel that is exclusively used in adjusting secondary public-network bandwidth between local terminal provider edge router and the opposite end provider edge router and also comprises the step of setting up the RSVP neighborhood afterwards:
Described local terminal Customer Edge router and local terminal provider edge router, opposite end Customer Edge router and opposite end provider edge router are set up the RSVP neighborhood respectively;
Described local terminal provider edge router and opposite end provider edge router are set up far-end RSVP neighborhood.
3, method according to claim 2, it is characterized in that described foundation also comprises that local terminal provider edge router, local terminal Customer Edge router, opposite end provider edge router, opposite end Customer Edge router collect the step of this side website traffic engineering information respectively after the RSVP neighborhood:
Router sends to all websites of this side and carries the LSA of traffic engineering information;
The website of receiving described LSA sends corresponding link state bulletin to described router;
Described router adds corresponding website and traffic engineering information in the traffic engineering database of self maintained to according to the LSA that receives.
4, method according to claim 3, it is characterized in that, described local terminal Customer Edge router is according to the secondary public network tunnel information of described configuration, after calculating the path of local terminal provider edge router, after sending the RSVP PATH, the local terminal provider edge router comprises:
The local terminal provider edge router finds the opposite end provider edge router in this locality, and judge if there is not one-level public network tunnel between local terminal provider edge router and opposite end provider edge router, then the local terminal provider edge router automatically set up and the opposite end provider edge router between one-level public network tunnel, if there has been one-level public network tunnel between local terminal provider edge router and opposite end provider edge router, then increase the bandwidth in described one-level public network tunnel according to the RSVP PATH that oneself receives.
5, method according to claim 4 is characterized in that, described local terminal provider edge router finds the opposite end provider edge router and specifically is meant in this locality:
The local terminal provider edge router is according to the secondary public network tunnel of described configuration, in the traffic engineering database of self maintained, after searching the failure of opposite end provider edge router according to the secondary public network tunnel of described configuration, in the VPN route table of self maintained, search the opposite end provider edge router.
6, according to claim 3 or 4 described methods, it is characterized in that, described path computing is according to the information in the traffic engineering database of Customer Edge router or provider edge router self maintained, uses private network to finish based on the shortest-path first algorithm CSPF that retrains.
7, method according to claim 1 is characterized in that, described method also is included in after described secondary public network tunnel sets up successfully, and the opposite end provider edge router is the step of described secondary public network tunnel distributing label.
8, the router in a kind of non-cross-domain multi-protocol label switching three-layer Virtual Private Network is characterized in that, comprising:
Receiver module is used to receive the RSVP PATH, and obtains tunnel configuration information wherein, and described tunnel configuration information comprises the desired bandwidth of tunnel node and tunnel, and described tunnel passes through and is exclusively used in the public network tunnel of regulating described tunnel bandwidth;
First memory module is used to store traffic engineering database, and described traffic engineering database comprises the traffic engineering information of described all websites of this side of router, and is used for the next-hop node according to this tunnel of described tunnel configuration information inquiry;
Path calculation module is used to calculate the path between this router and described next-hop node;
Sending module in the path computing process, is used to send the RSVP PATH; After path computing is finished, be used to send the RSVP reserving message.
9, router according to claim 8 is characterized in that, described router also comprises:
Second memory module is used to store the VPN route table, when not comprising the next-hop node in this tunnel in the traffic engineering database of described first memory module, searches the next-hop node in this tunnel in described VPN route table;
First judge module is used for judging this router and the described public network tunnel that whether exists between the next-hop node in this tunnel that the VPN route table finds, described public network tunnel is used to guarantee the bandwidth in described tunnel;
The tunnel adjustment module when having the public network tunnel between this router and the described next-hop node that finds this tunnel in the VPN route table, is used for increasing according to described tunnel configuration information the bandwidth in described public network tunnel; When not having the public network tunnel between the next-hop node in this router and described this tunnel that in the VPN route table, finds, be used between this router and described next-hop node, setting up the public network tunnel;
Second judge module is when described public network tunnel is set up successfully or after described public network tunnel increases the bandwidth success, is used to judge whether set up the RSVP neighborhood between this router and the next-hop node.
10, the second-level runner system in a kind of non-cross-domain multi-protocol label switching three-layer Virtual Private Network, comprise local terminal Customer Edge router, opposite end Customer Edge router, local terminal provider edge router and opposite end provider edge router, it is characterized in that:
Described local terminal Customer Edge router, be used for according to tunnel configuration information calculations between local terminal Customer Edge router and the opposite end Customer Edge router and the path between the local terminal provider edge router, and to local terminal provider edge router transmission RSVP PATH, described tunnel passes through and is exclusively used in the public network tunnel of regulating described tunnel bandwidth;
Described local terminal provider edge router is used for the RSVP PATH that sends according to the local terminal Customer Edge router and the opposite end provider edge router is set up the public network tunnel or be used to the local terminal provider edge router and the public network tunnel between the provider edge router of opposite end that have existed to increase bandwidth;
Described opposite end provider edge router is used for the path between calculating itself and the opposite end Customer Edge router;
Described opposite end Customer Edge router after receiving the RSVP PATH that the opposite end provider edge router sends, is used for sending the RSVP reserving message to the opposite end provider edge router.
11, system according to claim 10, it is characterized in that, described local terminal Customer Edge router, opposite end Customer Edge router, local terminal provider edge router and opposite end provider edge router also are used to collect the traffic engineering information of all websites of this side, form and safeguard local traffic engineering database.
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| CN101494587B (en) * | 2008-01-22 | 2012-08-29 | 华为技术有限公司 | Method for processing packet network tunnel and communication system as well as relevant equipment |
| CN101409683B (en) * | 2008-11-25 | 2011-03-30 | 清华大学 | High-performance user three-layer admittance control method based on three-layer soft exchange |
| CN101515938B (en) * | 2009-03-24 | 2012-01-25 | 华为技术有限公司 | Method and device for transmitting IP message through transmission network |
| CN102439919B (en) * | 2011-09-28 | 2014-04-16 | 华为技术有限公司 | Method, device and system for building lable switching path |
| CN105763482B (en) * | 2014-12-19 | 2020-03-10 | 中兴通讯股份有限公司 | Bandwidth adjusting method and device |
| CN106034072A (en) * | 2015-03-20 | 2016-10-19 | 中兴通讯股份有限公司 | Packet forwarding method and device and service provider network edge PE equipment |
| CN111031528B (en) * | 2018-10-10 | 2022-05-10 | 中国移动通信有限公司研究院 | Connection establishment method and device for private network |
| CN111385204B (en) * | 2018-12-27 | 2022-03-29 | 中国移动通信集团贵州有限公司 | Service transmission method, device, equipment and medium |
| CN111818577B (en) * | 2020-07-30 | 2023-05-12 | 中国联合网络通信集团有限公司 | User access method and access network equipment |
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| RSVP技术在MPLS中的应用研究. 赖友源.大众科技，第8期. 2006 |
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