CN102195848B - A kind of method, Apparatus and system realizing group business stream protection - Google Patents
A kind of method, Apparatus and system realizing group business stream protection Download PDFInfo
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- CN102195848B CN102195848B CN201010121302.6A CN201010121302A CN102195848B CN 102195848 B CN102195848 B CN 102195848B CN 201010121302 A CN201010121302 A CN 201010121302A CN 102195848 B CN102195848 B CN 102195848B
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Abstract
The invention discloses a kind of method realizing group business stream protection; mainly through the leaf node in multicast network and the protection source node preset are set up P2P tunnel; when leaf node detects that the path at self place exists fault; notice described protection source node, by protection source node to described leaf node forwarding multicasting Business Stream.The invention also discloses a kind of Apparatus and system realizing group business stream protection; do not need to set up multiple Protection path can realize; guaranteeing, under the prerequisite do not impacted other leaf nodes in the handoff procedure of path, to decrease the configure and maintenance workload of network operation.In addition, by single P2P tunnel, can be used for protecting the group business stream had on multiple multicast paths of same leaf node, achieve sharing of reserved resource, effectively save the expense of reserved resource.
Description
Technical field
The present invention relates to multicast service field, particularly relate to a kind of method, the Apparatus and system that realize group business stream protection.
Background technology
Existing based on multiprotocol label switching (MPLS, Multi-Protocol Label Switching) multicast path guard method, mainly comprise two kinds: a kind of method is the path protecting method of 1+1, business information is carried out two sending out by the method on multicast operating path and Protection path, the quality of the business information quality that receiving terminal sends over according to these two paths, carry out selection to receive, the method transmits same business information by two paths, wastes a large amount of bandwidth costs and device resource, another kind method is the path protecting method of 1: n (n >=1), for many multicast paths that source node is identical with destination node, a Protection path is set, in normal state, Protection path does not send business information, when a certain multicast path breaks down, need to be switched on Protection path by whole for this multicast path, relative to front a kind of path protecting method, although the bandwidth resources shared by the method are less, but the method is when toggle path, the individual path to each on multicast path does not break down is needed also to do handover operation, thus cause the shake of business information on each leaf node working properly, affect the transmission of business information.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method, the Apparatus and system that realize group business stream protection, to solve on waste bandwidth in the protection of existing group business stream and each leaf node the problems such as Business Stream shake.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of method realizing group business stream protection, described method comprises: the leaf node in multicast network and set up P2P tunnel between the default protection source node for forwarding multicasting Business Stream; When detecting that the path at self place exists fault, leaf node notices described protection source node, makes described protection source node can activate set up P2P tunnel and forwarding multicasting Business Stream; Described leaf node, by described P2P tunnel, receives the group business stream forwarded by described protection source node.
In such scheme, before setting up described P2P tunnel, described method also comprises: in described multicast network, arranges the protection source node be used for each leaf node forwarding multicasting Business Stream.
In such scheme, set up the process in described P2P tunnel, be specially: described protection source node and leaf node carry out alternately, completing the foundation in described P2P tunnel according to label distribution protocol or RSVP.
In such scheme, there is the process of fault in the path at self place of described detection, comprising: described leaf node detects and do not receive connectivity testing message by self path, place in Preset Time, then determine that multicast path exists fault; Or described leaf node detects that in Preset Time the described connectivity testing message received by self path, place exists deterioration, then determine that this multicast path exists fault.
In such scheme, described leaf node notices the process of described protection source node, is specially: described leaf node, when detecting that self path, place exists fault, sends fault notification message to described protection source node.
In such scheme; after described leaf node notices described protection source node; described method also comprises: described protection source node is according to the fault notification message receiving the transmission of described leaf node; activate the P2P tunnel between this leaf node, forward described group business stream by this P2P tunnel to described leaf node.
In such scheme; described protection source node forwards the process of described group business stream to described leaf node; be specially: the group business stream that protection source node receiving group source sends, pass through activated P2P tunnel and forward this group business stream to described leaf node.
In such scheme, described protection source node forwards the process of described group business stream to described leaf node, be specially: described leaf node, when detecting that self path, place exists fault, sends fault notification message for the root node of forwarding multicasting Business Stream in this path; After described root node receives described fault notification message, the group business stream that self will forward is copied and is sent to described protection source node; Described protection source node receives the group business stream that described root node sends, and is forwarded to described leaf node by described P2P tunnel.
In such scheme; described root node sends the process of group business stream to described protection source node; be specially: described root node and described protection source node set up P2P tunnel, and pass through set up P2P tunnel described Business Stream is sent to described protection source node.
In such scheme, described protection source node forwards the process of described group business stream to described leaf node, also comprise: described protection source node, by after described group business stream encapsulation service identification, sends to described leaf node by described P2P tunnel.
Present invention also offers a kind of device realizing group business stream protection, described device comprises: set up unit, detecting unit, notification unit, receiving element, wherein: set up unit, for setting up P2P tunnel by the leaf node in multicast network and between the default protection source node being used for forwarding multicasting Business Stream; Whether detecting unit, exist fault for the path detecting described leaf node place; Notification unit, during for detecting that the path at described leaf node place exists fault at described detecting unit, notices described protection source node; Receiving element, for by the described P2P tunnel set up unit and set up, receives the group business stream that described protection source node forwards.
In such scheme, describedly set up unit, specifically for: the foundation completing P2P tunnel between described leaf node and described protection source node according to label distribution protocol or RSVP.
In such scheme, described detecting unit, specifically for: detect described leaf node and whether in described Preset Time, connectivity testing message can be received by self path, place; And/or, detect the connectivity testing message that described leaf node received by self path, place in described Preset Time and whether there is deterioration.
In such scheme; described notification unit; specifically for: notification unit; during for detecting that the path at described leaf node place exists fault at described detecting unit; fault notification message is sent to described protection source node; make described protection source node can according to this fault notification message, activate and describedly set up the P2P tunnel forwarding multicasting Business Stream that unit sets up.
Present invention also offers a kind of system realizing group business stream protection, described system comprises: protection source node, one or more leaf node, P2P tunnel is set up between this protection source node and each leaf node, wherein: protection source node, for passing through described P2P tunnel to described leaf node forwarding multicasting Business Stream; Leaf node, for when detecting that the path at self place exists fault, receives the group business stream of described protection source node forwarding by described P2P tunnel.
In such scheme, described leaf node, specifically for: when detecting that the path at self place exists fault, send fault notification message to described protection source node.
In such scheme, described protection source node, comprising: receiver module, active module, forwarding module, wherein: receiver module, for receiving the fault notification message that described leaf node sends; Active module, for receiving fault notification message according to receiver module, activates described P2P tunnel; Forwarding module, is transmitted to described leaf node for the P2P tunnel activated by described active module by described multicast source Business Stream.
In such scheme, described forwarding module, specifically for: the group business stream sent by multicast source, the P2P tunnel activated by described active module is transmitted to described leaf node.
In such scheme, described system, also comprises: root node, and the group business stream for forwarding copies and is sent to described protection source node; Described forwarding module, the group business stream also for being sent by described root node, the P2P tunnel activated by described active module is transmitted to described leaf node.
The present invention is by setting up point-to-point (P2P by the leaf node in multicast network and the protection source node preset; Peer to Peer) tunnel; with when breaking down in the path at this leaf node place; realize the protection of group business stream; do not need to set up multiple Protection path can realize; guaranteeing, under the prerequisite do not impacted other leaf nodes in the handoff procedure of path, to decrease the configure and maintenance workload of network operation.In addition, by single P2P tunnel, can be used for protecting the group business stream had on multiple multicast paths of same leaf node, achieve sharing of reserved resource, effectively save the expense of reserved resource.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet that the present invention realizes group business stream guard method;
Fig. 2 is the composition structural representation that the present invention realizes group business stream protective device;
Fig. 3 is the composition structural representation that the present invention realizes group business stream protection system;
Fig. 4 is the path schematic diagram of a multicast network;
The schematic flow sheet that group business stream comprises is realized in a kind of fault scenes that Fig. 5 is multicast network shown in Fig. 4;
Fig. 6 is the path schematic diagram of a kind of fault scenes of multicast network shown in Fig. 4;
The schematic flow sheet that group business stream comprises is realized in the another kind of fault scenes that Fig. 7 is multicast network shown in Fig. 4;
Fig. 8 is the path schematic diagram of the another kind of fault scenes of multicast network shown in Fig. 4.
Embodiment
A kind of method realizing group business stream protection of the present invention, with reference to shown in Fig. 1, mainly comprises the following steps:
Step 101: the leaf node in multicast network and set up P2P tunnel between the default protection source node for forwarding multicasting Business Stream;
Step 102: when detecting that the path at self place exists fault, leaf node notices described protection source node, makes described protection source node can activate set up P2P tunnel and forwarding multicasting Business Stream;
Here, the path at leaf node place can be with described leaf node be group business stream acceptance point one or more multicast path or one or more individual path in described multicast network.
Step 103: described leaf node receives the group business stream forwarded by described protection source node by described P2P tunnel.
Wherein, before step 101, described method also comprises: in described multicast network, arranges the protection source node be used for each leaf node forwarding multicasting Business Stream.
Here, can be arranged by static state setting or the method dynamically arranged can to the protection source node of each leaf node forwarding multicasting Business Stream.In practical application, any one node in described multicast network can be chosen as required, be set to protect source node.
Particularly; in step 101; protection source node and leaf node are according to label distribution protocol (LDP; Label Distribute Protocol) or RSVP (RSVP-TE; Resource Reserved ProtocolTraffic Engineer) carry out alternately; complete the foundation in described P2P tunnel, concrete process of establishing is prior art, does not repeat them here.
Here, the process setting up P2P tunnel between protection source node and leaf node can manually realize, also can by between two nodes dynamically mutual signaling realize.
In practical application, each leaf node that multicast network comprises can set up corresponding P2P tunnel by said process to described protection source node, to ensure that the group business stream in multicast network on the multicast path of each leaf node place can both be protected.
Wherein, in step 102, leaf node detects the process that self path, place exists fault, is specifically as follows:
Whether described leaf node detects in Preset Time can receive described connectivity testing message by the path at self place, if not, then determine that this path exists fault, otherwise this path is normal.
Or described leaf node is detected the connectivity testing message received by self path, place and whether there is deterioration in Preset Time, if so, then determine that this path exists fault, otherwise this path is normal.
Particularly, leaf node can be contrasted by the connectivity testing message that self received and former connectivity testing message, determines whether received connectivity testing message exists deterioration.
Here, Preset Time when leaf node detects can be 3.5 cycles.
Here, leaf node detects the process in self path, place, also comprises: described leaf node institute in the paths for the root node of forwarding multicasting Business Stream periodically to described leaf node transmission connectivity testing message.
Wherein, in step 102, leaf node notices the process of described protection source node, is specially: described leaf node, when detecting that the path at self place exists fault, sends fault notification message to described protection source node.
Wherein, between step 102 and step 103; described method also comprises: described protection source node, according to the fault notification message receiving the transmission of described leaf node, activates the P2P tunnel between this leaf node, forwards described group business stream by this P2P tunnel to described leaf node.
Here; self identification information in path, place or the service identification information of group business stream can be included in the fault notification message that leaf node sends; make described protection source node can determine to exist in described multicast network the individual path of fault according to the identification information in path or the service identification information of group business stream in this fault notification message, thus activate corresponding P2P tunnel.
Or protection source node according to the identification information of the leaf node comprised in fault notification message, can also determine the individual path that there is fault in described path, thus activates corresponding P2P tunnel.
Wherein, described protection source node forwards the process of described group business stream to described leaf node, be specifically as follows:
The group business stream that protection source node receiving group source sends, passes through activated P2P tunnel and forwards this group business stream to described leaf node.
In practical application, can by arranging multicast source, the group business stream that multicast source can be forwarded is sent to protection source node and root node simultaneously, when multicast path is normal, because un-activation protection source node is to the P2P tunnel of leaf node, the group business stream received can abandon by protection source node, does not forward, by described multicast path, this group business stream is forwarded to leaf node by root node; When there is fault in multicast path; though root node continues forwarding multicasting Business Stream; but leaf node cannot receive; now protect the P2P tunnel between source node activation with leaf node; and by this P2P tunnel, the group business stream from multicast source is forwarded to leaf node; make leaf node when multicast path exists fault, group business stream can be received.
Wherein, described protection source node forwards the process of described group business stream to described leaf node, can also be:
Described leaf node, when detecting that self path, place exists fault, sends fault notification message for the root node of forwarding multicasting Business Stream in this path;
After described root node receives described fault notification message, the group business stream that self will forward is copied and is sent to described protection source node;
Protection source node receives the group business stream that root node sends, and is forwarded to described leaf node by described P2P tunnel.
Particularly, can set up P2P tunnel between protection source node and described root node, root node sends group business stream by this P2P tunnel to described protection source node; Described leaf node, by the reverse path between root node, comes to send fault notification message to described root node, reverse path be here in multicast network leaf node to the unidirectional path of root node.
Particularly, described protection source node is in the repeating process completing group business stream, and the multicast service that will forward sends to leaf node by described P2P tunnel after flowing through adaptive encapsulation.
Here, root node, after receiving the fault notification message that leaf node sends, according to this fault notification message, can also report path failure situation to the even higher level of node in multicast network or other business ends.
Here; protection source node is when to leaf node forwarding multicasting Business Stream; also comprise: after the group business stream encapsulation service identification that protection source node will forward; send to described leaf node, make described leaf node can determine the class of business of institute's receiving multicast business stream according to service identification wherein.
Particularly; protection source node, when sending group business stream, encapsulates service identification, and is sent to leaf node in group business stream; leaf node can determine the class of business that this group business stream is corresponding according to service identification wherein, the different group business streams received with district office.
In order to realize said method, the invention allows for a kind of device realizing group business stream protection, with reference to shown in Fig. 2, described device mainly comprises: set up unit 21, detecting unit 22, notification unit 23, receiving element 24, wherein:
Set up unit 21, for setting up P2P tunnel by the leaf node in multicast network and between the default protection source node being used for forwarding multicasting Business Stream;
Whether detecting unit 22, exist fault for the path detecting described leaf node place;
Notification unit 23, for when described detecting unit 22 detects that the path at described leaf node place exists fault, notices described protection source node;
Receiving element 24, for by the described P2P tunnel set up unit 21 and set up, receives the group business stream that described protection source node forwards.
Here; need after notification unit 23 advertisement protection source node; protection source node is meeting forwarding multicasting Business Stream; and then receiving element 24 just can receive the group business stream of protection source node forwarding; therefore, there is indirectly annexation in actual applications in notification unit here 23 and receiving element 24.
Wherein, describedly set up unit, specifically for: the foundation completing P2P tunnel between described leaf node and described protection source node according to LDP or SRVP-TE.
Wherein, described detecting unit 22, specifically for: detect described leaf node and whether in described Preset Time, connectivity testing message can be received by self path, place; And/or, detect the connectivity testing message that described leaf node received by self path, place in described Preset Time and whether there is deterioration.
Wherein, described notification unit 23, specifically for: for when described detecting unit 22 detects that the path at described leaf node place exists fault, send fault notification message to described protection source node.
Here; the service identification information of the group business stream that the identification information in path, described leaf node place or described path forward can be comprised in described fault notification message; to protect source node can according to this fault notification message; determine the path that there is fault; activate corresponding P2P tunnel, and then realize the protection of group business stream.
In practical application, the above-mentioned device realizing group business stream protection can be realized by the leaf node in multicast network, or also above-mentioned device can be arranged in leaf node the defencive function realized group business stream.
Present invention also offers a kind of system realizing group business stream protection, with reference to shown in Fig. 3, this system mainly comprises: protection source node 31, one or more leaf node 32, sets up P2P tunnel between protection source node 31 and each leaf node 32, wherein:
Protection source node 31, for passing through described P2P tunnel to described leaf node 32 forwarding multicasting Business Stream;
Leaf node 32, for when detecting that the path at self place exists fault, receives the group business stream of described protection source node 31 forwarding by described P2P tunnel.
Here, described leaf node 32 specifically for: when detecting that the path at self place exists fault, send fault notification message to described protection source node 31.
Here, described protection source node 31 mainly comprises: receiver module 311, active module 312, forwarding module 313, wherein:
Receiver module 311, for receiving the fault notification message that described leaf node sends;
Active module 312, for receiving fault notification message according to receiver module 311, activates described P2P tunnel;
Forwarding module 313, is transmitted to described leaf node for the P2P tunnel activated by described active module 312 by multicast source Business Stream.
Wherein, described forwarding module 313, specifically for: the group business stream sent by multicast source, the P2P tunnel activated by described active module 312 is transmitted to described leaf node 32.
Here, described system can also comprise: root node 33, and the group business stream for forwarding copies and is sent to described protection source node 32;
Described forwarding module 313, the group business stream also for being sent by described root node 33, the P2P tunnel activated by described active module 312 is transmitted to described leaf node 32.
Here, root node 33 carries out adaptation encapsulation specifically for the group business stream that will be forwarded by multicast source, is transmitted to each leaf node on this multicast path by one or more multicast path at self place.
Wherein, the leaf node 32 in said system comprises the above device realizing group business stream protection and realizes; Protection source node 31 can pre-set in multicast network, and setting up procedure describes in detail above, does not repeat them here.
By above-mentioned Apparatus and system, realize the process of group business stream protection, with reference to the description of said method, do not repeat them here.
Below for multicast network shown in Fig. 4, process the present invention being realized to group business stream protection is described in further details.
Multicast network as shown in Figure 4, root node 100 can by multicast path 1 to leaf node 101, the 107 forwarding multicasting Business Stream in multicast network, root node 100 can also by multicast path 2 to leaf node 101,102,103, the 104 forwarding multicasting Business Stream in multicast network, and root node 120 can by multicast path 3 to leaf node 103,104,105,106 forwarding multicasting Business Stream.
In the multicast network shown in Fig. 4; configuring one can the protection source node 110 of forwarding multicasting Business Stream; and configure the P2P tunnel between this protection source node 110 respectively for the leaf node 101-107 on each multicast path in present networks; as protected in Fig. 4 shown in the dotted line between source node 110 to each leaf node 101-107, be used for protecting group business stream to the forwarding of each leaf node.In addition; also P2P tunnel can be set up between protection source node 110 and root node 100,120; as Fig. 4 protects shown in the dotted line between source node 110 and root node 100,120, make protection source node 110 can obtain the group business stream that will forward from root node 100,120.
Here, source node 110 is protected can to select to be realized by any one leaf node in this multicast network or root node.
With reference to shown in Fig. 5, there is the scene of fault in the multicomponent branch path for the same root node shown in Fig. 6, realizes the idiographic flow that group business stream comprises as follows:
Step 501: in the multicast network shown in Fig. 4, the root node 100 of multicast path 1 and multicast path 2 regularly sends connectivity testing message respectively by these two multicast paths to leaf node 107,101 and leaf node 101,102,103,104;
Step 502: leaf node 101 detects the connectivity testing message whether receiving root node 100 transmission in Preset Time, if not, then enters step 503, otherwise returns step 501;
Step 503: leaf node 101 does not receive the connectivity testing message from root node 100, determine that the individual path at leaf node 101 place exists fault as shown in Figure 6, be the individual path that there is fault with the individual path of cross in Fig. 6, leaf node 101 generates fault notification message, and is returned to root node 100 by the reverse path (not shown) between root node 100, sent to protection source node 110 simultaneously;
Here, the reverse path between leaf node and root node is the one-way transmission path of leaf node to root node.
Step 504: after root node 100 receives the fault notification message that leaf node 101 returns, recognize that multicast path 1 and multicast path 2 exist individual path fault, then copy each group business stream forwarded via multicast path 1 and multicast path 2, send to protection source node 110 by the P2P tunnel between protection source node 110;
Step 505: protection source node 110 receives the fault notification message that described leaf node 101 sends, activate the P2P tunnel between leaf node 101, each group business stream encapsulation service identification that root node 100 is sent, and be sent to leaf node 101 by this P2P tunnel;
Step 506: leaf node 101 receives each group business stream by the P2P tunnel between protection source node 110; and by group business stream that the service identification district office encapsulated in each group business stream receives; thus when the individual path at leaf node 101 place breaks down, achieve the protection of group business stream.
With reference to shown in Fig. 7, there is the scene of fault in the multicomponent branch path for the different root nodes shown in Fig. 8, realizes the idiographic flow that group business stream comprises as follows:
Step 701: in the multicast network shown in Fig. 4, root node 120 regularly sends connectivity testing message to leaf node 103,104,105,106 by multicast path 3, and root node 100 regularly sends connectivity testing message to leaf node 101-104 by multicast path 2;
Step 702: leaf node 104 detects whether receive described connectivity testing message in Preset Time, if so, then returns step 701, otherwise continue step 703;
Step 703: when leaf node 104 detects the connectivity testing message not receiving and send over from root node 100 and root node 120, determine that multicast path 2 and the multicast path 3 at self place exist the individual path fault shown in Fig. 8, be the individual path that there is fault with the individual path of cross in Fig. 8, leaf node 104 generates fault notification message, return to root node 100,102 respectively by the reverse path (not shown) between root node 100 and root node 120, and send to protection source node 110;
Step 704: after root node 100,120 receives the fault notification message that leaf node 104 returns, the group business stream of transmission on duplicated multicast path 2, multicast path 3 respectively, and sent to by the P2P tunnel separately and between protection source node 110 and protect source node 110, to carry out the switching of Protection path;
Step 705: after protection source node 110 receives the fault notification message of leaf node 104 transmission, activate the P2P tunnel between self and leaf node 104, and after the group business stream sent for root node 100,120 encapsulates corresponding service identification respectively, leaf node 104 is sent to, to realize the recovery of group business stream by this P2P tunnel;
Step 706: leaf node 104 receives described group business stream by the P2P tunnel between protection source node 110; can according to the identification information in each group business stream; identify the business corresponding to this group business stream; received group business stream is distinguished; thus when the individual path of leaf node 104 exists fault, the process achieving group business stream protection terminates.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention, and all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (19)
1. realize a method for group business stream protection, it is characterized in that, described method comprises:
Leaf node in multicast network and set up P2P tunnel between the default protection source node for forwarding multicasting Business Stream;
When detecting that the path at self place exists fault, leaf node notices described protection source node, makes described protection source node can activate set up P2P tunnel and forwarding multicasting Business Stream; Described leaf node, by described P2P tunnel, receives the group business stream forwarded by described protection source node;
When detecting that self place multicast path is normal, the group business stream received abandons by described protection source node; Described leaf node, by described multicast path, receives the group business stream forwarded by root node.
2. realize the method for group business stream protection according to claim 1, it is characterized in that, before setting up described P2P tunnel, described method also comprises: in described multicast network, arranges the protection source node be used for each leaf node forwarding multicasting Business Stream.
3. realize the method for group business stream protection according to claim 1, it is characterized in that, set up the process in described P2P tunnel, be specially:
Described protection source node and leaf node carry out alternately, completing the foundation in described P2P tunnel according to label distribution protocol or RSVP.
4. realize the method for group business stream protection according to claim 1, it is characterized in that, there is the process of fault in the path at self place of described detection, comprising:
Described leaf node detects and does not receive connectivity testing message by self path, place in Preset Time, then determine that multicast path exists fault;
Or described leaf node detects that in Preset Time the described connectivity testing message received by self path, place exists deterioration, then determine that this multicast path exists fault.
5. realize the method for group business stream protection according to claim 1; it is characterized in that; described leaf node notices the process of described protection source node, is specially: described leaf node, when detecting that self path, place exists fault, sends fault notification message to described protection source node.
6. realize the method for group business stream protection according to claim 5, it is characterized in that, after described leaf node notices described protection source node, described method also comprises:
Described protection source node, according to the fault notification message receiving the transmission of described leaf node, activates the P2P tunnel between this leaf node, forwards described group business stream by this P2P tunnel to described leaf node.
7. realize the method for group business stream protection according to claim 6, it is characterized in that, described protection source node forwards the process of described group business stream to described leaf node, be specially:
The group business stream that protection source node receiving group source sends, passes through activated P2P tunnel and forwards this group business stream to described leaf node.
8. realize the method for group business stream protection according to claim 6, it is characterized in that, described protection source node forwards the process of described group business stream to described leaf node, be specially:
Described leaf node, when detecting that self path, place exists fault, sends fault notification message for the root node of forwarding multicasting Business Stream in this path;
After described root node receives described fault notification message, the group business stream that self will forward is copied and is sent to described protection source node;
Described protection source node receives the group business stream that described root node sends, and is forwarded to described leaf node by described P2P tunnel.
9. realize the method for group business stream protection according to claim 8, it is characterized in that, described root node sends the process of group business stream to described protection source node, is specially:
Described root node and described protection source node set up P2P tunnel, and pass through set up P2P tunnel described Business Stream is sent to described protection source node.
10. according to any one of claim 7 to 9, realize the method for group business stream protection; it is characterized in that; described protection source node forwards the process of described group business stream to described leaf node; also comprise: described protection source node, by after described group business stream encapsulation service identification, sends to described leaf node by described P2P tunnel.
11. 1 kinds of devices realizing group business stream and protect, it is characterized in that, described device comprises: set up unit, detecting unit, notification unit, receiving element, wherein:
Set up unit, for setting up P2P tunnel by the leaf node in multicast network and between the default protection source node being used for forwarding multicasting Business Stream;
Whether detecting unit, exist fault for the path detecting described leaf node place;
Notification unit, during for detecting that the path at described leaf node place exists fault at described detecting unit, notices described protection source node;
Receiving element, during for detecting that the path at self place exists fault, by the described P2P tunnel set up unit and set up, receives the group business stream that described protection source node forwards; When detecting that self place multicast path is normal, by described multicast path, receive the group business stream forwarded by root node, wherein, at described detecting unit, described protection source node detects that self place multicast path abandons described group business stream time normal.
12., according to the device realizing group business stream protection described in claim 11, is characterized in that, describedly set up unit, specifically for:
The foundation in P2P tunnel between described leaf node and described protection source node is completed according to label distribution protocol or RSVP.
13., according to the device realizing group business stream protection described in claim 11, is characterized in that, described detecting unit, specifically for:
Detect described leaf node and whether in described Preset Time, connectivity testing message can be received by self path, place;
And/or, detect the connectivity testing message that described leaf node received by self path, place in described Preset Time and whether there is deterioration.
14., according to the device realizing group business stream protection described in claim 11, is characterized in that, described notification unit, specifically for:
Notification unit; during for detecting that the path at described leaf node place exists fault at described detecting unit; fault notification message is sent to described protection source node; make described protection source node can according to this fault notification message, activate and describedly set up the P2P tunnel forwarding multicasting Business Stream that unit sets up.
15. 1 kinds of systems realizing group business stream and protect, it is characterized in that, described system comprises: protection source node, one or more leaf node, sets up P2P tunnel between this protection source node and each leaf node, wherein:
Protection source node, for when described leaf node detects that the path at self place exists fault, by described P2P tunnel to described leaf node forwarding multicasting Business Stream; At described leaf node when detecting that self place multicast path is normal, the group business stream received is abandoned;
Leaf node, for when detecting that the path at self place exists fault, receives the group business stream of described protection source node forwarding by described P2P tunnel; When detecting that self place multicast path is normal, by described multicast path, receive the group business stream forwarded by root node.
16., according to the system realizing group business stream protection described in claim 15, is characterized in that, described leaf node, specifically for:
When detecting that the path at self place exists fault, send fault notification message to described protection source node.
17. according to the system realizing group business stream protection described in claim 15, and it is characterized in that, described protection source node, comprising: receiver module, active module, forwarding module, wherein:
Receiver module, for receiving the fault notification message that described leaf node sends;
Active module, for receiving fault notification message according to receiver module, activates described P2P tunnel;
Forwarding module, is transmitted to described leaf node for the P2P tunnel activated by described active module by described multicast source Business Stream.
18., according to the system realizing group business stream protection described in claim 17, is characterized in that, described forwarding module, specifically for:
By the group business stream that multicast source sends, the P2P tunnel activated by described active module is transmitted to described leaf node.
19. according to the system realizing group business stream protection described in claim 17, and it is characterized in that, described system, also comprises: root node, and the group business stream for forwarding copies and is sent to described protection source node;
Described forwarding module, the group business stream also for being sent by described root node, the P2P tunnel activated by described active module is transmitted to described leaf node.
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| CN113973066A (en) * | 2020-07-24 | 2022-01-25 | 华为技术有限公司 | Method, device and system for detecting connectivity of P2MP tree |
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| CN1852246A (en) * | 2005-11-25 | 2006-10-25 | 华为技术有限公司 | Method for multi-cast broadcasting flow distribution node to receive multi-cast broadcasting flow |
| CN101094175A (en) * | 2007-06-14 | 2007-12-26 | 华为技术有限公司 | Method, device, and system for protecting flux of multicast |
| CN101656651A (en) * | 2008-08-19 | 2010-02-24 | 华为技术有限公司 | Method and device for correlatively protecting traffic engineering tunnels |
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| CN1852246A (en) * | 2005-11-25 | 2006-10-25 | 华为技术有限公司 | Method for multi-cast broadcasting flow distribution node to receive multi-cast broadcasting flow |
| CN101094175A (en) * | 2007-06-14 | 2007-12-26 | 华为技术有限公司 | Method, device, and system for protecting flux of multicast |
| CN101656651A (en) * | 2008-08-19 | 2010-02-24 | 华为技术有限公司 | Method and device for correlatively protecting traffic engineering tunnels |
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