CN104702480A - Method and device for establishing tunnel protection group in next generation multicast virtual private network - Google Patents
Method and device for establishing tunnel protection group in next generation multicast virtual private network Download PDFInfo
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Abstract
The invention provides a method, a device and a system for establishing a tunnel protection group in a next generation multicast virtual private network (NG MVPN) and aims at improving the reliability of multicast data transmission. According to the method, a root node sends an instruction message to a leaf node after determining multicast data transmission is switched to S-PMSI from I-PMSI, wherein the instruction message is used for instruction that the S-PMSI tunnel is adopted between the root node and the leaf node to perform multicast data transmission. The leaf node receiving the instruction message is capable of establishing the protection group according to the instruction message, and the projection group comprises the S-PMSI tunnel between the first root node and the leaf node and a tunnel between a second root node and the leaf node.
Description
Technical field
The embodiment of the present invention relates to the communication technology; (nextgeneration multicast Virtual Private Network is called for short: the methods, devices and systems setting up protecting tunnel group NG MVPN) to particularly relate to a kind of multicasting virtual private network of future generation.
Background technology
NG MVPN is Internet protocol (Internet Protocol, be called for short: IP) multicast packet passes across the border gateway protocol (Border Gateway Protocol, be called for short: BGP) or negotiate marking commutation (Multiprotocol Label Switching, be called for short: the MPLS) framework of new generation of network.NG MVPN can contain pattern operator multicast service interface (inclusive provider multicast serviceinterface, abbreviation: I-PMSI) the Deta bearer pattern in tunnel by providing package.I-PMSI tunnel can be based on point-to-multipoint traffic engineering (point-to-multipoint traffic engineering, P2MP MLDP) etc. be called for short: P2MP TE) or based on point-to-multipoint many tag distribution protocols (point-to-multipoint Multi-Label DistributionProtocol is called for short: the tunnel created.
When public network uses I-PMSI tunnel bear multicast data, in order to prevent public network interior joint or link occurs fault from causing multicast service to interrupt, the mode can setting up over run tunnel at public network is protected node or link.Usually, same Virtual Private Network (virtual private network in NG MVPN, be called for short: two Provider Edge (provider edge VPN) can be disposed, be called for short: PE) equipment is as sending node, such as the PE equipment of main sending node and the PE equipment as standby sending node.The I-PMSI tunnel that it is root node that PE equipment as main sending node can be set up with himself, the outlet in an I-PMSI tunnel is the PE equipment as receiving node.The 2nd I-PMSI tunnel that it is root node that PE equipment as standby sending node can be set up with himself, the outlet in the 2nd I-PMSI tunnel is the PE equipment as receiving node.
PE equipment as receiving node can dispose VPN Quickly regroup, and (fast reroute is called for short: FRR).PE equipment as receiving node receives from customer edge (customer edge, be called for short: CE) Protocol Independent Multicast (the Protocol Independent Multicast of equipment, be called for short: PIM) to join message or from Internet Group Management Protocol (the Internet Group ManagementProtocol of multicast receivers, be called for short: IGMP) after joining message, can join message according to PIM or IGMP join message in the multicast source address that carries, obtain the private network singlecast router corresponding with this multicast source address by VPN Quickly regroup.This private network singlecast router comprises two down hops, and these two down hops are respectively as the PE equipment of main sending node and the PE as standby sending node.PE equipment as receiving node generates private network multicast list according to as the PE equipment of main sending node and sending node PE.This private network multicast list comprises the corresponding relation in main I-PMSI tunnel and standby I-PMSI tunnel.Main I-PMSI tunnel is an I-PMSI tunnel, and standby I-PMSI tunnel is the 2nd I-PMSI tunnel.As receiving node PE equipment PIM to be added or IGMP adds and is packaged into BGP message, sent to respectively as the PE of main sending node and the PE as standby sending node by public network.As the PE equipment of receiving node by the protection group in main I-PMSI tunnel and standby formation tunnel, I-PMSI tunnel.
When public network uses I-PMSI bear multicast data, even if do not connect the multicast receivers corresponding with multicast packet as the PE equipment of receiving node, the PE equipment as receiving node also can receive multicast packet.In order to avoid the PE equipment not connecting multicast receivers receives multicast packet, as the PE equipment of main sending node or the PE device start timer as standby sending node, when the timer times out, as main sending node PE equipment or I-PMSI can be initiated as the PE equipment of standby sending node (selective provider multicast service interface is called for short: switching S-PMSI) to selectivity operator multicast service interface.PE equipment as receiving node perception in time cannot be switched to S-PMSI tunnel by I-PMSI tunnel, reduces the reliability of muticast data transmission.
Summary of the invention
The embodiment of the present invention provides the methods, devices and systems setting up protecting tunnel group in a kind of NG MVPN, contributes to the reliability improving muticast data transmission.
First aspect, provides a kind of method setting up protecting tunnel group in NG MVPN, comprising:
Root node determination muticast data transmission switches to S-PMSI tunnel by I-PMSI tunnel;
Described root node sends Indication message to leaf node, and described Indication message is used to indicate between described root node and described leaf node and adopts described S-PMSI tunnel to carry out muticast data transmission.
In conjunction with above-mentioned first aspect, in the first possible implementation of first aspect, described Indication message is that Border Gateway Protocol upgrades message, described Border Gateway Protocol upgrades message and comprises type field and identification information, described type field comprises described identification information for identifying described Border Gateway Protocol renewal message, and described identification information is used to indicate between described root node and described leaf node and adopts described S-PMSI tunnel to carry out muticast data transmission.
In conjunction with the first possible implementation of above-mentioned first aspect or above-mentioned first aspect, in the implementation that the second of first aspect is possible, described root node determination muticast data transmission also comprises before switching to S-PMSI tunnel by I-PMSI tunnel:
Described root node sends S-PMSI to described leaf node and automatically finds (Auto Discovery, be called for short: A-D) route, described S-PMSI A-D route comprises the IP address of multicast source address and described root node, and described S-PMSI A-D route is used for setting up described S-PMSI tunnel between described root node and described leaf node.
In conjunction with the implementation that the second of above-mentioned first aspect is possible, in the third possible implementation of first aspect, described root node also comprises before sending S-PMSI A-D route to described leaf node:
Described root node judges whether the transmission rate of the multicast packet on described root node reaches switching threshold;
If the transmission rate of the multicast packet on described root node reaches switching threshold, then described root node sends described S-PMSI A-D route to described leaf node.
In conjunction with the implementation that the second of above-mentioned first aspect is possible, in the 4th kind of possible implementation of first aspect, described root node, to after described leaf node sends S-PMSI A-D route, also comprises:
Described root node receives leaf (English name is leaf) the A-D route that described leaf node sends, described leaf A-D route is for representing that described leaf node request adds described S-PMSI tunnel, and described leaf A-D route comprises the IP address of described leaf node;
The IP address of the described leaf node that described root node comprises according to described leaf A-D route, sets up the described S-PMSI tunnel between described root node and described leaf node.
Second aspect, provides a kind of method setting up protecting tunnel group in NG MVPN, comprising:
Leaf node receives the Indication message that the first root node sends, and described Indication message is used to indicate between described first root node and described leaf node and adopts S-PMSI tunnel to carry out muticast data transmission;
Described leaf node sets up protection group according to described Indication message, and described protection group comprises the S-PMSI tunnel between described first root node and described leaf node and the tunnel between the second root node and described leaf node.
In conjunction with above-mentioned second aspect, in the first possible implementation of second aspect, a node in described first root node and described second root node is primary root node, and another node is standby root node;
Tunnel between described second root node and described leaf node is the I-PMSI tunnel between described second root node and described leaf node, or the S-PMSI tunnel between described second root node and described leaf node.
In conjunction with the first possible implementation of above-mentioned second aspect or above-mentioned second aspect, in the implementation that the second of second aspect is possible, described leaf node receives before the first root node sends Indication message, also comprises:
Described leaf node receives the S-PMSI A-D route that described first root node sends, described S-PMSI A-D route comprises the IP address of multicast source address and described first root node, and described S-PMSIA-D route is used for setting up described S-PMSI tunnel between described first root node and described leaf node;
The described multicast source address that described leaf node comprises according to described S-PMSI A-D route, determines to there is the multicast receivers corresponding with described multicast source address;
Described leaf node obtains leaf A-D route, and described leaf A-D route is for representing that described leaf node request adds described S-PMSI tunnel, and described leaf A-D route comprises the IP address of described leaf node;
The IP address of described first root node that described leaf node comprises according to described S-PMSI A-D route, sends described leaf A-D route to described first root node.
In conjunction with the first possible implementation of above-mentioned second aspect or above-mentioned second aspect, in the third possible implementation of second aspect, described leaf node receives before the first root node sends Indication message, also comprises:
Described leaf node receives the S-PMSI A-D route that described first root node sends, described S-PMSI A-D route comprises the IP address of multicast source address and described first root node, and described S-PMSIA-D route is used for setting up described S-PMSI tunnel between described first root node and described leaf node;
The described multicast source address that described leaf node comprises according to described S-PMSI A-D route, determines to there is the multicast receivers corresponding with described multicast source address;
The IP address of described first root node that described leaf node comprises according to described S-PMSI A-D route, sets up the S-PMSI tunnel between described leaf node and described first root node.
The third aspect, provide the device setting up protecting tunnel group in a kind of NG MVPN, described device section is deployed on root node, comprising:
Processing unit, for determining that muticast data transmission switches to S-PMSI tunnel by I-PMSI tunnel;
First transmitting element, for sending Indication message to leaf node, described Indication message is used to indicate between described root node and described leaf node and adopts described S-PMSI tunnel to carry out muticast data transmission.
In conjunction with the above-mentioned third aspect, in the first possible implementation of the third aspect, described Indication message is that Border Gateway Protocol upgrades message, described Border Gateway Protocol upgrades message and comprises type field and identification information, described type field comprises described identification information for identifying described Border Gateway Protocol renewal message, and described identification information is used to indicate between described root node and described leaf node and adopts described S-PMSI tunnel to carry out muticast data transmission.
In conjunction with the first possible implementation of the above-mentioned third aspect or the above-mentioned third aspect, in the implementation that the second of the third aspect is possible, also comprise:
Second transmitting element, before having been switched to S-PMSI tunnel by I-PMSI tunnel in described processing unit determination muticast data transmission, S-PMSI A-D route is sent to described leaf node, described S-PMSI A-D route comprises the IP address of multicast source address and described root node, and described S-PMSI A-D route is used for setting up described S-PMSI tunnel between described root node and described leaf node.
In conjunction with the implementation that the second of the above-mentioned third aspect is possible, in the third possible implementation of the third aspect, also comprise judging unit;
Described judging unit is used for, before described processing unit sends S-PMSI A-D route to described leaf node, judging whether the transmission rate of the multicast packet on described root node reaches switching threshold;
Described first transmitting element also reaches switching threshold for the transmission rate of the multicast packet determined on described root node at described judging unit, sends described S-PMSI A-D route to described leaf node.
In conjunction with the implementation that the second of the above-mentioned third aspect is possible, in the 4th kind of possible implementation of the third aspect, also comprise receiving element and set up unit;
Described receiving element is used at described second transmitting element to after described leaf node sends S-PMSIA-D route, receive the leaf A-D route that described leaf node sends, described leaf A-D route is for representing that described leaf node request adds described S-PMSI tunnel, and described leaf A-D route comprises the IP address of described leaf node;
Described unit of setting up, for the IP address of described leaf node comprised according to described leaf A-D route, sets up the described S-PMSI tunnel between described root node and described leaf node.
Fourth aspect, provide the device setting up protecting tunnel group in a kind of NG MVPN, described device section is deployed on leaf node, comprising:
First receiving element, for receiving the Indication message that the first root node sends, described Indication message is used to indicate between described first root node and described leaf node and adopts S-PMSI tunnel to carry out muticast data transmission;
Processing unit, for setting up protection group according to described Indication message, described protection group comprises the S-PMSI tunnel between described first root node and described leaf node and the tunnel between the second root node and described leaf node.
In conjunction with above-mentioned fourth aspect, in the first possible implementation of fourth aspect, a node in described first root node and described second root node is primary root node, and another node is standby root node;
Tunnel between described second root node and described leaf node is the I-PMSI tunnel between described second root node and described leaf node, or the S-PMSI tunnel between described second root node and described leaf node.
In conjunction with the first possible implementation of above-mentioned fourth aspect or above-mentioned fourth aspect, in the implementation that the second of fourth aspect is possible, also comprise:
Second receiving element, for receiving the S-PMSI A-D route that described first root node sends, described S-PMSI A-D route comprises the IP address of multicast source address and described first root node, and described S-PMSI A-D route is used for setting up described S-PMSI tunnel between described first root node and described leaf node;
Determining unit, for the described multicast source address comprised according to described S-PMSI A-D route, determines to there is the multicast receivers corresponding with described multicast source address;
Obtain unit, for obtaining leaf A-D route, described leaf A-D route is for representing that described leaf node request adds described S-PMSI tunnel, and described leaf A-D route comprises the IP address of described leaf node;
Transmitting element, for the IP address of described first root node comprised according to described S-PMSI A-D route, sends described leaf A-D route to described first root node.
In conjunction with the first possible implementation of above-mentioned fourth aspect or above-mentioned fourth aspect, in the third possible implementation of fourth aspect, also comprise:
Second receiving element, for receiving the S-PMSI A-D route that described first root node sends, described S-PMSI A-D route comprises the IP address of multicast source address and described first root node, and described S-PMSI A-D route is used for setting up described S-PMSI tunnel between described first root node and described leaf node;
Determining unit, for the described multicast source address comprised according to described S-PMSI A-D route, determines to there is the multicast receivers corresponding with described multicast source address;
Set up unit, according to the IP address of described first root node that described S-PMSI A-D route comprises, set up the S-PMSI tunnel between described leaf node and described first root node.
5th aspect; provide the system setting up protecting tunnel group in a kind of NG MVPN, comprising: the device that the device that the aforementioned third aspect or any one possible implementation of the third aspect provide and aforementioned fourth aspect or any one possible implementation of fourth aspect provide.
Pass through such scheme; the methods, devices and systems of protecting tunnel group are set up in the NG MVPN that the embodiment of the present invention provides; after root node determination muticast data transmission switches to S-PMSI by I-PMSI, be used to indicate between described root node and described leaf node to leaf node transmission and adopt S-PMSI tunnel to carry out the Indication message of muticast data transmission.Like this, the leaf node receiving Indication message just can know that multicast packet is transmitted by S-PMSI tunnel, sets up S-PMSI and other can be used for the protection group transmitted between the tunnel of described multicast packet, contributes to the reliability improving muticast data transmission.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The topological structure schematic diagram of the NG MVPN that Fig. 1 provides for the embodiment of the present invention;
The method flow diagram of protecting tunnel group is set up in a kind of NG MVPN that Fig. 2 provides for the embodiment of the present invention;
The MCAST-VPN NLRI schematic diagram that Fig. 3 provides for the embodiment of the present invention;
The method flow diagram of protecting tunnel group is set up in the another kind of NG MVPN that Fig. 4 provides for the embodiment of the present invention;
The structural representation of the device of protecting tunnel group is set up in a kind of NG MVPN that Fig. 5 provides for the embodiment of the present invention;
The structural representation of the device of protecting tunnel group is set up in a kind of NG MVPN that Fig. 6 provides for the embodiment of the present invention;
The structural representation of the device of protecting tunnel group is set up in a kind of NG MVPN that Fig. 7 provides for the embodiment of the present invention;
The structural representation of the device of protecting tunnel group is set up in a kind of NG MVPN that Fig. 8 provides for the embodiment of the present invention;
The structural representation of the device of protecting tunnel group is set up in a kind of NG MVPN that Fig. 9 provides for the embodiment of the present invention;
The structural representation of the device of protecting tunnel group is set up in a kind of NG MVPN that Figure 10 provides for the embodiment of the present invention;
The structural representation of the device of protecting tunnel group is set up in a kind of NG MVPN that Figure 11 provides for the embodiment of the present invention;
The structural representation of the device of protecting tunnel group is set up in a kind of NG MVPN that Figure 12 provides for the embodiment of the present invention;
The structural representation of the device of protecting tunnel group is set up in a kind of NG MVPN that Figure 13 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The topological structure schematic diagram of the NG MVPN that Fig. 1 embodiment of the present invention provides, NG MVPN can comprise: user node, customer edge (Customer Edge, be called for short: CE) equipment, PE equipment and provider (provider, abbreviation: P) equipment.User node, CE equipment and PE equipment have multicast-capable.As shown in Figure 1, website (site) 1 and website (site) 2 are the user node belonging to same VNP, and such as site1 and site2 is the user node belonging to VPN-A.CE-A1 and CE-A2 is CE equipment.PE1, PE2 and PE3 are PE equipment.PE1 and PE2 all can be used as sending node, and PE3 can be used as receiving node.Site1 connects CE-A1.CE-A1 is connected with PE1 and PE2 respectively.PE1 and PE2 can be used as the root node of same MVPN, and correspondingly, PE3 is leaf node.PE3 and CE-A2 connects.CE-A2 and site2 connects.The I-PMSI tunnel that it is root node that PE1 can set up with PE1, PE3 is leaf node.The 2nd I-PMSI tunnel that it is root node that PE2 can set up with PE2, PE3 is leaf node.A described I-PMSI tunnel and described 2nd I-PMSI tunnel can form the protection group in tunnel on PE3.Wherein, in the protection group in described tunnel, a described I-PMSI tunnel can be set to main I-PMSI tunnel, and described 2nd I-PMSI tunnel can be set to standby I-PMSI tunnel.
If site1 sends multicast packet to site2, then site1 is by CE-A1, and described multicast packet is sent to PE1 and PE2 respectively.PE1, by a described I-PMSI tunnel, sends described multicast packet to PE3.PE2, by described 2nd I-PMSI tunnel, sends described multicast packet to PE3.PE3 according to the protection group in described tunnel, can receive the multicast packet of the described I-PMSI tunnel transmission as main I-PMSI tunnel.The multicast packet that PE3 can will receive, is sent to site2 by CE-A2.
Illustrate, the PE equipment as root node can send S-PMSI A-D route to the PE equipment as leaf node, collect the information being connected with the PE equipment as leaf node of multicast receivers.As the PE device start timer of root node, when the timer times out, S-PMSI tunnel is switched to by I-PMSI tunnel, or can after the transmission rate of multicast packet reaches predetermined threshold value as the PE equipment of root node, switched to S-PMSI tunnel by I-PMSI tunnel, prevent the leaf node not connecting multicast receivers from receiving multicast packet.Described multicast receivers is multicast receivers corresponding to multicast group, and described multicast group is corresponding with described multicast packet.Wherein, I-PMSI tunnel can connect the virtual interface of every other PE equipment, makes all PE equipment as leaf node receive multicast packet.The virtual interface of other PE equipment of coupling part, S-PMSI tunnel, makes the leaf node receiving multicast data being connected to multicast receivers, and described multicast receivers can be the multicast receivers of request multicast packet.
The method that the embodiment of the present invention provides, device as root node after I-PMSI tunnel switches to S-PMSI tunnel, can be used to indicate between root node and described leaf node to the device transmission as leaf node and adopts S-PMSI tunnel to carry out the Indication message of muticast data transmission.The equipment as leaf node receiving Indication message just can know that multicast packet is transmitted by S-PMSI tunnel.Equipment as leaf node can set up S-PMSI and other can be used for the protection group transmitted between the tunnel of described multicast packet, contributes to the reliability improving muticast data transmission.
With embodiment particularly, technical scheme of the present invention is described in detail below.These specific embodiments can be combined with each other below, may repeat no more for same or analogous concept or process in some embodiment.
The method flow diagram of protecting tunnel group is set up in a kind of NG MVPN that Fig. 2 provides for the embodiment of the present invention.The method that the embodiment of the present invention provides is from this side of root node, is described the method that the embodiment of the present invention provides.
S201: root node determination muticast data transmission switches to S-PMSI tunnel by I-PMSI tunnel.
Alternatively, before S201, the method that the embodiment of the present invention provides also comprises: described root node judges whether the transmission rate of the multicast packet on described root node reaches switching threshold; After the transmission rate of the multicast packet that described root node is determined on described root node reaches switching threshold, described root node sends S-PMSI A-D route to leaf node.The IP address of multicast source address and root node is comprised in described S-PMSI A-D route.
Alternatively, described root node is to after leaf node sends S-PMSI A-D route, the method that the embodiment of the present invention provides also comprises: described root node can receive the leaf A-D route that described leaf node sends, described leaf A-D route comprises the IP address of described leaf node, and described leaf A-D route is for representing that leaf node request adds S-PMSI tunnel; Described root node, according to the IP address of described leaf node, sets up the S-PMSI tunnel between described root node and described leaf node.
S202: root node sends Indication message to leaf node, Indication message is used to indicate between described root node and described leaf node and adopts described S-PMSI tunnel to carry out muticast data transmission.
Particularly, described Indication message is that Border Gateway Protocol upgrades (English name is BGP updata) message, and described Border Gateway Protocol upgrades message and comprises type field and identification information.Wherein, described type field comprises described identification information for identifying described borde gateway renewal message.Described identification information is used to indicate between described root node and described leaf node and adopts described S-PMSI tunnel to carry out muticast data transmission.
Described Indication message can be carried on multicasting virtual private network Network Layer Reachable Information (Multicast Virtual Private Network Network Layer ReachabilityInformation, the abbreviation: MCAST-VPN NLRI) that BGP updata message comprises.As shown in Figure 3, the MCAST-VPN NLRI schematic diagram that provides for the embodiment of the present invention of Fig. 3.
Illustrate, the root node sending described Indication message is the first root node, and the root node with described first root node with main and standby relation is the second root node.Described leaf node can be known and carry out muticast data transmission by S-PMSI tunnel between described first root node after receiving the Indication message that described first root node sends.Described leaf node can set up protection group according to described Indication message, and described protection group comprises the S-PMSI tunnel between the first root node and leaf node and the tunnel between the second root node and leaf node.Tunnel between second root node and leaf node is the I-PMSI tunnel between the second root node and leaf node, or, the S-PMSI tunnel between the second root node and leaf node.If described first root node is primary root node, then the S-PMSI tunnel between described first root node and described leaf node is main tunnel, and the tunnel between described second root node and described leaf node is standby tunnel.If described first root node is standby root node, then the S-PMSI tunnel between described first root node and described leaf node is standby tunnel, and the tunnel between described second root node and described leaf node is main tunnel.
In network shown in Fig. 1, if PE1 is described first root node, then the second root node described in PE2, PE1 and PE2 has main and standby relation.PE3 is leaf node.Take PE1 as primary root node, PE2 is for being example for root node, and PE1 according to data statistics rule, after the transmission rate of multicast packet reaches predetermined threshold value, can be switched to S-PMSI tunnel by I-PMSI tunnel.PE1 sends S-PMSI A-D route to PE3, comprises the IP address of multicast source address and PE1 in S-PMSI A-D route.Multicast source is used for providing described multicast packet.PE3, according to described multicast source address, determines whether there is the multicast receivers corresponding with multicast source address.PE3 determines to there is the multicast receivers corresponding with multicast source address, and PE3 obtains leafA-D route, and leaf A-D route is for representing that PE3 request adds S-PMSI tunnel, and leaf A-D route comprises the IP address of PE3.The IP address of the PE1 that PE3 comprises according to S-PMSI A-D route, sends leaf A-D route to PE1.PE1 or PE3 sets up the S-PMSI tunnel between root node and leaf node, such as: PE1 can according to the IP address of the PE3 in leaf A-D route, set up the S-PMSI tunnel between PE1 and PE3, or the IP address of the PE1 that PE3 can comprise according to S-PMSI A-D route, sets up the S-PMSI tunnel between PE1 and PE3.PE1 while muticast data transmission switches to S-PMSI tunnel by I-PMSI tunnel or afterwards, sends Indication message to PE3.The Indication message that PE3 can send according to PE1, sets up protection group.Such as: if adopt I-PMSI tunnel to carry out muticast data transmission between PE2 and PE3, then the protection group on PE3 comprises: the S-PMSI tunnel between PE1 and PE3 and the I-PMSI tunnel between PE2 and PE3.Wherein, the S-PMSI tunnel between PE1 and PE3 is main tunnel, and the I-PMSI tunnel between PE2 and PE3 is standby tunnel.If adopt S-PMSI tunnel to carry out muticast data transmission between PE2 and PE3, then the protection group on PE3 comprises: the S-PMSI tunnel between PE1 and PE3 and the S-PMSI tunnel between PE2 and PE3.Wherein, the S-PMSI tunnel between PE1 and PE3 is main tunnel, and the S-PMSI tunnel between PE2 and PE3 is standby tunnel.
In network shown in Fig. 1, if PE2 is described first root node, then PE1 is described second root node, PE1 and PE2 has main and standby relation.PE3 is leaf node.Take PE1 as primary root node, PE2 is for being example for root node, and PE2 according to data statistics rule, after the transmission rate of multicast packet reaches predetermined threshold value, can be switched to S-PMSI tunnel by I-PMSI tunnel.PE2 sends S-PMSI A-D route to PE3, comprises the IP address of multicast source address and PE2 in S-PMSI A-D route.Multicast source is used for providing described multicast packet.PE3 determines to there is the multicast receivers corresponding with multicast source address, and PE3 obtains leaf A-D route, and leaf A-D route is for representing that PE3 request adds S-PMSI tunnel, and leaf A-D route comprises the IP address of PE3.The IP address of the PE1 that PE3 comprises according to S-PMSI A-D route, sends leaf A-D route to PE1.PE2 or PE3 sets up the S-PMSI tunnel between root node and leaf node, such as: PE2 can according to the IP address of the PE3 in leaf A-D route, set up the S-PMSI tunnel between PE2 and PE3, or the IP address of the PE2 that PE3 can comprise according to S-PMSI A-D route, sets up the S-PMSI tunnel between PE2 and PE3.PE2 while muticast data transmission switches to S-PMSI tunnel by I-PMSI tunnel or afterwards, sends Indication message to PE3.The Indication message that PE3 can send according to PE2, sets up protection group.Such as: if when adopting I-PMSI tunnel to carry out muticast data transmission between PE1 and PE3, then the protection group on PE3 comprises: the I-PMSI tunnel between PE1 and PE3 and the S-PMSI tunnel between PE2 and PE3.Wherein, the I-PMSI tunnel between PE1 and PE3 is main tunnel, and the S-PMSI tunnel between PE2 and PE3 is standby tunnel.If adopt S-PMSI tunnel to carry out muticast data transmission between PE1 and PE3, then the protection group on PE3 comprises: the S-PMSI tunnel between PE1 and PE3 and the S-PMSI tunnel between PE2 and PE3.Wherein, the S-PMSI tunnel between PE1 and PE3 is main tunnel, and the S-PMSI tunnel between PE2 and PE3 is standby tunnel.
In the embodiment of the present invention, after root node determination muticast data transmission switches to S-PMSI by I-PMSI, be used to indicate between described root node and described leaf node to leaf node transmission and adopt S-PMSI tunnel to carry out the Indication message of muticast data transmission.Like this, the leaf node contributing to receiving Indication message sets up protection group, contributes to the reliability improving muticast data transmission.
The flow chart of the method for protecting tunnel group is set up in the another kind of NG MVPN that Fig. 4 provides for the embodiment of the present invention.The method that the embodiment of the present invention provides is from this side of leaf node, is described the method that the embodiment of the present invention provides.
S401: leaf node receives the Indication message that the first root node sends, and described Indication message is used to indicate between the first root node and described leaf node and adopts S-PMSI tunnel to carry out transfer of data.
Alternatively, before S401, the method that the embodiment of the present invention provides also comprises: described leaf node receives the S-PMSI A-D route that described first root node sends, comprise the IP address of multicast source address and described first root node in described S-PMSI A-D route, described S-PMSI A-D route is used for setting up described S-PMSI tunnel between described first root node and described leaf node; Described leaf node according to the described multicast source address comprised in described S-PMSI A-D route, can determine whether there is the multicast receivers corresponding with described multicast source address.
Illustrate, if described leaf node determines to there is the multicast receivers corresponding with described multicast source address, then described leaf node obtains leaf A-D route, described leaf A-D route is for representing that described leaf node request adds described S-PMSI tunnel, and described leaf A-D route comprises the IP address of described leaf node; The IP address of the first root node that described leaf node comprises according to described S-PMSI A-D route, sends described leaf A-D route to described first root node.Or, if described leaf node determines to there is the multicast receivers corresponding with described multicast source address, then the IP address of described first root node that comprises according to described S-PMSIA-D route of described leaf node, sets up the S-PMSI tunnel between described first root node and described leaf node.
S402: described leaf node sets up protection group according to Indication message, described protection group comprises the S-PMSI tunnel between described first root node and described leaf node and the tunnel between the second root node and leaf node.
Particularly, the tunnel between described second root node and described leaf node is the I-PMSI tunnel between described second root node and described leaf node, or, the S-PMSI tunnel between described second root node and described leaf node.If described first root node is primary root node, then described first root node in described protection group and the S-PMSI tunnel between described leaf node are main tunnel, and the tunnel between described second root node and described leaf node is standby tunnel.If described first root node is standby root node, then described first root node in described protection group and the S-PMSI tunnel between described leaf node are standby tunnel, and the tunnel between described second root node and described leaf node is main tunnel.
Illustrate, if main tunnel failure, described leaf node detects (Bidirectional Forwarding Detection by two-way converting, be called for short: BFD) main tunnel failure described in perception, then described leaf node switches to and carries out multicast data reception for tunnel, thus ensure the reliability of transfer of data, and shorten the convergence time after tunnel failure.
In the embodiment of the present invention, leaf node receives the first being used to indicate between the first root node and leaf node of root node transmission and adopts S-PMSI tunnel to carry out the Indication message of muticast data transmission; Described leaf node can set up protection group according to Indication message, and described protection group comprises the S-PMSI tunnel between described first root node and described leaf node and the tunnel between the second root node and described leaf node.The described leaf node receiving Indication message just can know that multicast packet is transmitted by S-PMSI tunnel, sets up S-PMSI and other can be used for the protection group transmitted between the tunnel of described multicast packet, contributes to the reliability improving muticast data transmission.
The structural representation of the device of protecting tunnel group is set up in a kind of NG MVPN that Fig. 5 provides for the embodiment of the present invention.The device section that the embodiment of the present invention provides is deployed in root node.The device of the embodiment of the present invention comprises processing unit 501 and the first transmitting element 502.Wherein, processing unit 501 is for determining that muticast data transmission switches to S-PMSI tunnel by I-PMSI tunnel; First transmitting element 502 is for sending Indication message to leaf node, and described Indication message is used to indicate between described root node and described leaf node and adopts described S-PMSI tunnel to carry out muticast data transmission.
In the embodiment of the present invention, described Indication message is that Border Gateway Protocol upgrades message, described Border Gateway Protocol upgrades message and comprises type field and identification information, described type field comprises described identification information for identifying described Border Gateway Protocol renewal message, and described identification information is used to indicate between described root node and described leaf node and adopts described S-PMSI tunnel to carry out muticast data transmission.
The structural representation of the device of protecting tunnel group is set up in a kind of NG MVPN that Fig. 6 provides for the embodiment of the present invention.The embodiment of the present invention also comprises the second transmitting element 503 further on basis embodiment illustrated in fig. 5.Wherein, second transmitting element 503 is for before determining that at described processing unit 501 muticast data transmission have been switched to S-PMSI tunnel by I-PMSI tunnel, S-PMSI A-D route is sent to described leaf node, described S-PMSI A-D route comprises the IP address of multicast source address and described root node, and described S-PMSI A-D route is used for setting up described S-PMSI tunnel between described root node and described leaf node.
The structural representation of the device of protecting tunnel group is set up in a kind of NG MVPN that Fig. 7 provides for the embodiment of the present invention.The embodiment of the present invention also comprises judging unit 504 further on basis embodiment illustrated in fig. 6.Wherein, judging unit 504, for before sending S-PMSI A-D route at described processing unit 501 to described leaf node, judges whether the transmission rate of the multicast packet on described root node reaches switching threshold; Described first transmitting element 502 also reaches switching threshold for the transmission rate of the multicast packet determined on described root node at described judging unit 504, sends described S-PMSI A-D route to described leaf node.
The structural representation of the device of protecting tunnel group is set up in a kind of NG MVPN that Fig. 8 provides for the embodiment of the present invention.The embodiment of the present invention also comprises further on basis embodiment illustrated in fig. 6: receiving element 505 and set up unit 506.Wherein, described receiving element 505 is for after sending S-PMSI A-D route at described second transmitting element 503 to described leaf node, receive the leaf A-D route that described leaf node sends, described leaf A-D route is for representing that described leaf node request adds described S-PMSI tunnel, and described leaf A-D route comprises the IP address of described leaf node; Described unit 506 of setting up, for the IP address of described leaf node comprised according to described leaf A-D route, sets up the described S-PMSI tunnel between described root node and described leaf node.
What the embodiment of the present invention provided is arranged at the device setting up protecting tunnel group in the NG MVPN of root node, and the method that embodiment corresponding to Fig. 2 can be adopted to provide, repeats no more herein,
The device that the embodiment of the present invention provides, after processing module determination muticast data transmission switches to S-PMSI tunnel by I-PMSI tunnel, sending module sends after Indication message to leaf node, send Indication message to leaf node, above-mentioned Indication message is used to indicate between above-mentioned root node and above-mentioned leaf node and adopts above-mentioned S-PMSI tunnel to carry out muticast data transmission.Like this; contribute to knowing that multicast packet is transmitted by S-PMSI tunnel in the leaf node receiving Indication message; set up S-PMSI and other can be used for the protection group transmitted between the tunnel of above-mentioned multicast packet, contribute to the reliability improving muticast data transmission.
The structural representation of the device of protecting tunnel group is set up in a kind of NG MVPN that Fig. 9 provides for the embodiment of the present invention.The device that the embodiment of the present invention provides can be deployed in leaf node.The device that the embodiment of the present invention provides comprises the first receiving element 901 and processing unit 902.Wherein, the Indication message that the first receiving element 901 sends for receiving the first root node, described Indication message is used to indicate between described first root node and described leaf node and adopts S-PMSI tunnel to carry out muticast data transmission; Processing unit 902 is for setting up protection group according to described Indication message, and described protection group comprises the S-PMSI tunnel between described first root node and described leaf node and the tunnel between the second root node and described leaf node.
In the embodiment of the present invention, a node in described first root node and described second root node is primary root node, and another node is standby root node; Tunnel between described second root node and described leaf node is the I-PMSI tunnel between described second root node and described leaf node, or the S-PMSI tunnel between described second root node and described leaf node.
The structural representation of the device of protecting tunnel group is set up in a kind of NG MVPN that Figure 10 provides for the embodiment of the present invention.The embodiment that Figure 10 is corresponding is on the basis of Fig. 9 shown device, also comprises the second receiving element 903, determining unit 904, acquiring unit 905 and transmitting element 906 further.Wherein, the S-PMSI A-D route that second receiving element 903 sends for receiving described first root node, described S-PMSI A-D route comprises the IP address of multicast source address and described first root node, and described S-PMSI A-D route is used for setting up described S-PMSI tunnel between described first root node and described leaf node; The described multicast source address of determining unit 904 for comprising according to described S-PMSI A-D route, determines to there is the multicast receivers corresponding with described multicast source address; Obtain unit 905 for obtaining leafA-D route, described leaf A-D route is for representing that described leaf node request adds described S-PMSI tunnel, and described leaf A-D route comprises the IP address of described leaf node; Transmitting element 906, for the IP address of described first root node comprised according to described S-PMSI A-D route, sends described leaf A-D route to described first root node.
The structural representation of the device of protecting tunnel group is set up in a kind of NG MVPN that Figure 11 provides for the embodiment of the present invention.The embodiment that Figure 11 is corresponding is on the basis of the device shown in Fig. 9, also comprises further: the second receiving element 903, determining unit 904 and set up unit 907.Wherein, the S-PMSI A-D route that second receiving element 903 sends for receiving described first root node, described S-PMSI A-D route comprises the IP address of multicast source address and described first root node, and described S-PMSIA-D route is used for setting up described S-PMSI tunnel between described first root node and described leaf node; The described multicast source address of determining unit 904 for comprising according to described S-PMSI A-D route, determines to there is the multicast receivers corresponding with described multicast source address; Set up the IP address of described first root node that unit 907 comprises according to described S-PMSIA-D route, set up the S-PMSI tunnel between described leaf node and described first root node.
The embodiment of the present invention provides the device setting up protecting tunnel group in the NG MVPN that can be deployed in root node, and the method that embodiment corresponding to Fig. 4 can be adopted to provide, repeats no more herein.
The device that the embodiment of the present invention provides, the first receiving element receives the Indication message that the first root node sends, and above-mentioned Indication message is used to indicate S-PMSI tunnel between above-mentioned first root node and above-mentioned leaf node and carries out muticast data transmission; Processing unit sets up protection group according to above-mentioned Indication message; the leaf node receiving Indication message just can know that multicast packet is transmitted by S-PMSI tunnel; set up S-PMSI and other can be used for the protection group transmitted between the tunnel of above-mentioned multicast packet, contribute to the reliability improving muticast data transmission.
The structural representation of the device of protecting tunnel group is set up in a kind of NG MVPN that Figure 12 provides for the embodiment of the present invention.The device section that the embodiment of the present invention provides is deployed in root node.The device 1200 that the embodiment of the present invention provides comprises communication interface 1201, memory 1203 and processor 1202, wherein, communication interface 1201, processor 1202, memory 1203, to be interconnected by bus 1204; Bus 1204 can be Peripheral Component Interconnect standard (peripheral component interconnect, be called for short PCI) bus or EISA (extended industry standard architecture is called for short EISA) bus etc.Described bus can be divided into address bus, data/address bus, control bus etc.For ease of representing, only representing with a thick line in Figure 12, but not representing the bus only having a bus or a type.
Described communication interface 1201 is for communicating with opposite end.Memory 1203, for depositing program.Particularly, program can comprise program code, and described program code comprises computer-managed instruction.Memory 1203 may comprise random access memory (random access memory is called for short RAM), still may comprise nonvolatile memory (non-volatile memory), such as at least one magnetic disc store.
The program that processor 1202 execute store 1203 is deposited, realizes the method setting up protecting tunnel in the NGMVPN shown in Fig. 2 of the present invention, comprising:
Determine that muticast data transmission switches to S-PMSI tunnel by I-PMSI tunnel;
Send Indication message by communication interface 1201 to leaf node, described Indication message is used to indicate between root node and leaf node and adopts described S-PMSI tunnel to carry out transfer of data.
Above-mentioned processor 1202 can be general processor, comprises central processing unit (CentralProcessing Unit is called for short CPU), network processing unit (Network Processor is called for short NP) etc.; Can also be digital signal processor (DSP), application-specific integrated circuit (ASIC) (ASIC), field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic, discrete hardware components.
The device that the embodiment of the present invention provides, corresponding can be used for the technical scheme performing embodiment of the method shown in Fig. 2, and it is similar that it realizes principle, repeats no more herein.
In the device that the embodiment of the present invention provides; after processor determines that muticast data transmission switches to S-PMSI tunnel by I-PMSI tunnel; Indication message is sent to leaf node by communication interface; know accurately, timely to enable leaf node adopts S-PMSI tunnel to carry out transfer of data between root node; and set up the protection group in S-PMSI and other tunnels; thus, ensure the reliability of transfer of data.
The structural representation of the device of protecting tunnel group is set up in a kind of NG MVPN that Figure 13 provides for the embodiment of the present invention.The device section that the embodiment of the present invention provides is deployed in leaf node.The device 1300 that the embodiment of the present invention provides comprises communication interface 1301, memory 1303 and processor 1302, wherein, communication interface 1301, processor 1302, memory 1303, to be interconnected by bus 1304; Bus 1304 can be Peripheral Component Interconnect standard (peripheral component interconnect, be called for short PCI) bus or EISA (extended industry standard architecture is called for short EISA) bus etc.Described bus can be divided into address bus, data/address bus, control bus etc.For ease of representing, only representing with a thick line in Figure 13, but not representing the bus only having a bus or a type.
Described communication interface 1301 is for communicating with opposite end.Memory 1303, for depositing program.Particularly, program can comprise program code, and described program code comprises computer-managed instruction.Memory 1303 may comprise random access memory (random access memory is called for short RAM), still may comprise nonvolatile memory (non-volatile memory), such as at least one magnetic disc store.
The program that processor 1302 execute store 1303 is deposited, realizes the method setting up protecting tunnel in the NGMVPN shown in Fig. 4 of the present invention, comprising:
Received the Indication message of the first root node transmission by communication interface, above-mentioned Indication message is used to indicate between above-mentioned first root node and above-mentioned leaf node and adopts S-PMSI tunnel to carry out muticast data transmission;
Processor sets up protection group according to above-mentioned Indication message, and above-mentioned protection group comprises the S-PMSI tunnel between above-mentioned first root node and above-mentioned leaf node and the tunnel between the second root node and above-mentioned leaf node.
Above-mentioned processor 1302 can be general processor, comprises central processing unit (CentralProcessing Unit is called for short CPU), network processing unit (Network Processor is called for short NP) etc.; Can also be digital signal processor (DSP), application-specific integrated circuit (ASIC) (ASIC), field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic, discrete hardware components.
The device that the embodiment of the present invention provides, corresponding can be used for the technical scheme performing embodiment of the method shown in Fig. 4, and it is similar that it realizes principle, repeats no more herein.
In the device that the embodiment of the present invention provides; processor receives the Indication message of the first root node transmission by communication interface; above-mentioned Indication message is used to indicate between above-mentioned first root node and above-mentioned leaf node and adopts S-PMSI tunnel to carry out muticast data transmission; thus can know accurately, timely and adopt S-PMSI tunnel to carry out transfer of data between root node; the protection group showing S-PMSI between the first root node and leaf node and other tunnels set up by processor according to Indication message; thus, ensure the reliability of transfer of data.
One of ordinary skill in the art will appreciate that: all or part of step realizing above-mentioned each embodiment of the method can have been come by the hardware that program command is relevant.Aforesaid program can be stored in a computer read/write memory medium.This program, when performing, performs the step comprising above-mentioned each embodiment of the method; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (19)
1. set up a method for protecting tunnel group in multicasting virtual private network NG MVPN of future generation, it is characterized in that, described method comprises:
Root node determination muticast data transmission switches to selectivity operator multicast service interface S-PMSI tunnel by comprising pattern operator multicast service interface I-PMSI tunnel;
Described root node sends Indication message to leaf node, and described Indication message is used to indicate between described root node and described leaf node and adopts described S-PMSI tunnel to carry out muticast data transmission.
2. method according to claim 1, it is characterized in that, described Indication message is that Border Gateway Protocol upgrades message, described Border Gateway Protocol upgrades message and comprises type field and identification information, described type field comprises described identification information for identifying described Border Gateway Protocol renewal message, and described identification information is used to indicate between described root node and described leaf node and adopts described S-PMSI tunnel to carry out muticast data transmission.
3. method according to claim 1 and 2, is characterized in that, described root node determination muticast data transmission, by comprising before pattern operator multicast service interface I-PMSI tunnel switches to selectivity operator multicast service interface S-PMSI tunnel, also comprises:
Described root node sends S-PMSI to described leaf node and automatically finds A-D route, described S-PMSI A-D route comprises the internet protocol address of multicast source address and described root node, and described S-PMSI A-D route is used for setting up described S-PMSI tunnel between described root node and described leaf node.
4. method according to claim 3, is characterized in that, described root node also comprises before automatically finding A-D route to described leaf node transmission S-PMSI:
Described root node judges whether the transmission rate of the multicast packet on described root node reaches switching threshold;
If the transmission rate of the multicast packet on described root node reaches switching threshold, then described root node sends described S-PMSI A-D route to described leaf node.
5. method according to claim 3, is characterized in that, described root node, to after described leaf node sends S-PMSI A-D route, also comprises:
Described root node receives the leaf leaf A-D route that described leaf node sends, and described leaf A-D route is for representing that described leaf node request adds described S-PMSI tunnel, and described leaf A-D route comprises the IP address of described leaf node;
The IP address of the described leaf node that described root node comprises according to described leaf A-D route, sets up the described S-PMSI tunnel between described root node and described leaf node.
6. set up a method for protecting tunnel group in multicasting virtual private network NG MVPN of future generation, it is characterized in that, described method comprises:
Leaf node receives the Indication message that the first root node sends, and described Indication message is used to indicate between described first root node and described leaf node and adopts selectivity operator multicast service interface S-PMSI tunnel to carry out muticast data transmission;
Described leaf node sets up protection group according to described Indication message, and described protection group comprises the S-PMSI tunnel between described first root node and described leaf node and the tunnel between the second root node and described leaf node.
7. method according to claim 6, is characterized in that, a node in described first root node and described second root node is primary root node, and another node is standby root node;
Tunnel between described second root node and described leaf node is comprise pattern operator multicast service interface I-PMSI tunnel between described second root node and described leaf node, or the S-PMSI tunnel between described second root node and described leaf node.
8. the method according to claim 6 or 7, is characterized in that, described leaf node also comprises before receiving the first root node transmission Indication message:
The S-PMSI that described leaf node receives described first root node transmission finds A-D route automatically, described S-PMSI A-D route comprises the internet protocol address of multicast source address and described first root node, and described S-PMSI A-D route is used for setting up described S-PMSI tunnel between described first root node and described leaf node;
The described multicast source address that described leaf node comprises according to described S-PMSI A-D route, determines to there is the multicast receivers corresponding with described multicast source address;
Described leaf node obtains leaf leaf A-D route, and described leaf A-D route is for representing that described leaf node request adds described S-PMSI tunnel, and described leaf A-D route comprises the IP address of described leaf node;
The IP address of described first root node that described leaf node comprises according to described S-PMSI A-D route, sends described leaf A-D route to described first root node.
9. the method according to claim 6 or 7, is characterized in that, described leaf node also comprises before receiving the first root node transmission Indication message:
The S-PMSI that described leaf node receives described first root node transmission finds A-D route automatically, described S-PMSI A-D route comprises the IP address of multicast source address and described first root node, and described S-PMSI A-D route is used for setting up described S-PMSI tunnel between described first root node and described leaf node;
The described multicast source address that described leaf node comprises according to described S-PMSI A-D route, determines to there is the multicast receivers corresponding with described multicast source address;
The IP address of described first root node that described leaf node comprises according to described S-PMSI A-D route, sets up the S-PMSI tunnel between described leaf node and described first root node.
10. set up a device for protecting tunnel group in multicasting virtual private network NG MVPN of future generation, it is characterized in that, described device section is deployed on root node, and described device comprises:
Processing unit, for determining that muticast data transmission switches to selectivity operator multicast service interface S-PMSI tunnel by comprising pattern operator multicast service interface I-PMSI tunnel;
First transmitting element, for sending Indication message to leaf node, described Indication message is used to indicate between described root node and described leaf node and adopts described S-PMSI tunnel to carry out muticast data transmission.
11. devices according to claim 10, it is characterized in that, described Indication message is that Border Gateway Protocol upgrades message, described Border Gateway Protocol upgrades message and comprises type field and identification information, described type field comprises described identification information for identifying described Border Gateway Protocol renewal message, and described identification information is used to indicate between described root node and described leaf node and adopts described S-PMSI tunnel to carry out muticast data transmission.
12. devices according to claim 10 or 11, it is characterized in that, described device also comprises:
Second transmitting element, before having been switched to S-PMSI tunnel by I-PMSI tunnel in described processing unit determination muticast data transmission, send S-PMSI to described leaf node and automatically find A-D route, described S-PMSI A-D route comprises the internet protocol address of multicast source address and described root node, and described S-PMSI A-D route is used for setting up described S-PMSI tunnel between described root node and described leaf node.
13. devices according to claim 12, is characterized in that, described device also comprises: judging unit;
Described judging unit is used for, before described processing unit sends S-PMSI A-D route to described leaf node, judging whether the transmission rate of the multicast packet on described root node reaches switching threshold;
Described first transmitting element also reaches switching threshold for the transmission rate of the multicast packet determined on described root node at described judging unit, sends described S-PMSI A-D route to described leaf node.
14. devices according to claim 12, is characterized in that, described device also comprises: receiving element and set up unit;
Described receiving element is used at described second transmitting element to after described leaf node sends S-PMSIA-D route, receive the leaf leaf A-D route that described leaf node sends, described leaf A-D route is for representing that described leaf node request adds described S-PMSI tunnel, and described leaf A-D route comprises the IP address of described leaf node;
Described unit of setting up, for the IP address of described leaf node comprised according to described leaf A-D route, sets up the described S-PMSI tunnel between described root node and described leaf node.
Set up the device of protecting tunnel group in 15. 1 kinds of multicasting virtual private network NG MVPN of future generation, it is characterized in that, described device section is deployed on leaf node, and described device comprises:
First receiving element, for receiving the Indication message that the first root node sends, described Indication message is used to indicate between described first root node and described leaf node and adopts selectivity operator multicast service interface S-PMSI tunnel to carry out muticast data transmission;
Processing unit, for setting up protection group according to described Indication message, described protection group comprises the S-PMSI tunnel between described first root node and described leaf node and the tunnel between the second root node and described leaf node.
16. devices according to claim 15, is characterized in that, a node in described first root node and described second root node is primary root node, and another node is standby root node;
Tunnel between described second root node and described leaf node is the I-PMSI tunnel between described second root node and described leaf node, or the S-PMSI tunnel between described second root node and described leaf node.
17. devices according to claim 15 or 16, it is characterized in that, described device also comprises:
Second receiving element, the S-PMSI sent for receiving described first root node finds A-D route automatically, described S-PMSI A-D route comprises the internet protocol address of multicast source address and described first root node, and described S-PMSI A-D route is used for setting up described S-PMSI tunnel between described first root node and described leaf node;
Determining unit, for the described multicast source address comprised according to described S-PMSI A-D route, determines to there is the multicast receivers corresponding with described multicast source address;
Obtain unit, for obtaining leaf leaf A-D route, described leaf A-D route is for representing that described leaf node request adds described S-PMSI tunnel, and described leaf A-D route comprises the internet protocol address of described leaf node;
Transmitting element, for the IP address of described first root node comprised according to described S-PMSI A-D route, sends described leaf A-D route to described first root node.
18. devices according to claim 15 or 16, it is characterized in that, described device also comprises:
Second receiving element, the S-PMSI sent for receiving described first root node finds A-D route automatically, described S-PMSI A-D route comprises the IP address of multicast source address and described first root node, and described S-PMSI A-D route is used for setting up described S-PMSI tunnel between described first root node and described leaf node;
Determining unit, for the described multicast source address comprised according to described S-PMSI A-D route, determines to there is the multicast receivers corresponding with described multicast source address;
Set up unit, according to the IP address of described first root node that described S-PMSI A-D route comprises, set up the S-PMSI tunnel between described leaf node and described first root node.
Set up the system of protecting tunnel group in 19. 1 kinds of multicasting virtual private network NG MVPN of future generation, it is characterized in that, described system comprises: the device described in aforementioned claim 10 to 14 any one and the device described in aforementioned claim 15 to 18 any one.
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