CN102130830B - Standby label switched path (LSP) activation method, device and system - Google Patents

Standby label switched path (LSP) activation method, device and system Download PDF

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CN102130830B
CN102130830B CN201010609108.2A CN201010609108A CN102130830B CN 102130830 B CN102130830 B CN 102130830B CN 201010609108 A CN201010609108 A CN 201010609108A CN 102130830 B CN102130830 B CN 102130830B
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lsp
message
node
standby
psb
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CN102130830A (en
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孙俊
易孟
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/22—Alternate routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]

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Abstract

本发明实施例公开了一种LSP的激活方法、装置和系统，包括：接收来自上游节点的第一消息，包括备用LSP的第一标识信息；根据备用LSP的第一标识信息查找备用LSP对应的PSB，将PSB中备用LSP的保护状态从备用更改为主用，根据PSB获得备用LSP对应的本地交叉，激活本地交叉；若本节点为末节点，则在本地交叉激活成功后，向上游节点发送第二消息，第二消息包括备用LSP的第二标识信息；若本节点为中间节点，则向下游节点发送第一消息，接收来自下游节点的第二消息，在本地交叉激活成功后，向上游节点发送第二消息。本发明实施例可以减少消息的传输时间和消息的处理时间，提高业务的恢复性能。

Figure 201010609108

The embodiment of the present invention discloses a method, device and system for activating an LSP, including: receiving the first message from the upstream node, including the first identification information of the standby LSP; searching for the corresponding LSP of the standby LSP according to the first identification information of the standby LSP PSB, change the protection state of the standby LSP in the PSB from standby to active, obtain the local crossover corresponding to the standby LSP according to the PSB, and activate the local crossover; The second message, the second message includes the second identification information of the standby LSP; if the node is an intermediate node, then send the first message to the downstream node, receive the second message from the downstream node, and send the upstream The node sends the second message. The embodiments of the present invention can reduce message transmission time and message processing time, and improve service recovery performance.

Figure 201010609108

Description

The Activiation method of a kind of LSP for subsequent use, device and system
Technical field
The present invention relates to communication technical field, relate in particular to Activiation method, device and the system of a kind of LSP for subsequent use.
Background technology
Optical-fiber network is widely used owing to possessing very high professional transfer rate, can connect by setting up one or more optical-fiber network that satisfies client's service bandwidth demand, transmits client's business; And the professional reliability that transmits is to weigh whether stable important indicator of optical-fiber network.The reliability that transmits for improving optical network service is shared net (Mesh) resist technology and is widely adopted.
Sharing the Mesh recovery is ASON (Automatically Switched Optical Network; ASON)/one of most characteristic mechanism of protection and restoration in general multiple protocols label exchange (Generalized Multi-Protocol Label Switching, GMPLS) network.Its principle is to be in advance label switched path for subsequent use of business configuration (Label Switched Path, LSP), and the resource on the LSP for subsequent use is reserved by signaling message, does not intersect but set up, and in fact resource is not used.After primary LSP broke down, professional first node was initiated activation to LSP for subsequent use by signaling message, and the intersection that upper each node of LSP for subsequent use is reserved is set up, and the path is got through, and flow is switched on the LSP for subsequent use of activation, and business is restored.
Existing technical scheme is when professional primary LSP breaks down, and initiates activation to LSP resource for subsequent use by the first node of business by signaling message.In this process, the signaling message that the signaling message that carries carries during with dynamic heavy-route is the same, a lot of redundant objects have been comprised in the message, cause the message bag relatively large, the processing time of signaling node and the transmission time of signaling message have been prolonged, thereby caused to a certain extent the deteriorated of business recovery performance, the restorability when especially batch service breaks down.
Summary of the invention
The embodiment of the invention provides Activiation method, device and the system of a kind of LSP for subsequent use, can reduce the activationary time of LSP for subsequent use, the restorability when improving traffic failure.
A kind of Activiation method of label switching path LSP for subsequent use comprises:
This node receives the first message from upstream node, and described the first message comprises the first identification information of described LSP for subsequent use;
This node is searched path status controll block PSB corresponding to described LSP for subsequent use according to the first identification information of described LSP for subsequent use, with the guard mode of LSP for subsequent use described in the described PSB from for subsequent use change to primary, obtain this locality corresponding to described LSP for subsequent use according to described PSB and intersect, activate described local the intersection;
If this node is end-node, then after described local intersection activates successfully, send the second message to described upstream node, described the second message comprises the second identification information of described LSP for subsequent use;
If this node is intermediate node, then send to downstream node described the first message, receive described the second message from described downstream node, after described local intersection activates successfully, send described the second message to described upstream node.
A kind of Activiation method of label switching path LSP for subsequent use comprises:
The guard mode of LSP for subsequent use described in first node the path status controll block PSB that described LSP for subsequent use is corresponding changes to primaryly from for subsequent use, activates this locality intersection corresponding to described LSP for subsequent use;
First node sends the first message to downstream node, and described the first message comprises the first identification information of described LSP for subsequent use;
First node receives the second message from described downstream node, described the second message comprises the second identification information of described LSP for subsequent use, search PSB corresponding to described LSP for subsequent use according to the second identification information of described LSP for subsequent use, obtaining this locality corresponding to described LSP for subsequent use according to described PSB intersects, if described local the intersection is activated state, then described local the intersection activated successfully, and described LSP for subsequent use activates successfully.
A kind of active device of label switching path LSP for subsequent use comprises:
Receiving element is used for receiving the first message from upstream node, and described the first message comprises the first identification information of described LSP for subsequent use;
Activate the unit, be used for searching path status controll block PSB corresponding to described LSP for subsequent use according to the first identification information of described LSP for subsequent use, with the guard mode of LSP for subsequent use described in the described PSB from for subsequent use change to primary, obtain this locality corresponding to described LSP for subsequent use according to described PSB and intersect, activate described local the intersection;
Transmitting element is end-node if be used for this node, then after described local intersection activates successfully, sends the second message to described upstream node, and described the second message comprises the second identification information of described LSP for subsequent use; If this node is intermediate node, then send to downstream node described the first message, receive described the second message from described downstream node, after described local intersection activates successfully, send described the second message to described upstream node.
A kind of active device of label switching path LSP for subsequent use comprises:
Activate the unit, the guard mode that is used for LSP for subsequent use described in the path status controll block PSB that described LSP for subsequent use is corresponding changes to primaryly from for subsequent use, activates this locality intersection corresponding to described LSP for subsequent use;
Transmitting element is used for sending the first message to downstream node, and described the first message comprises the first identification information of described LSP for subsequent use;
Receiving element, be used for receiving the second message from described downstream node, described the second message comprises the second identification information of described LSP for subsequent use, search PSB corresponding to described LSP for subsequent use according to the second identification information of described LSP for subsequent use, obtaining this locality corresponding to described LSP for subsequent use according to described PSB intersects, if described local the intersection is activated state, then described local the intersection activated successfully, and described LSP for subsequent use activates successfully.
A kind of activation system of label switching path LSP for subsequent use comprises:
First node, the guard mode that is used for LSP for subsequent use described in the path status controll block PSB that described LSP for subsequent use is corresponding from for subsequent use change to primary, activating this locality corresponding to described LSP for subsequent use intersects, send to downstream node the first message, described the first message comprises the first identification information of described LSP for subsequent use; Reception is from the second message of described downstream node, and described the second message comprises the second identification information of described LSP for subsequent use, if described local the intersection activated successfully, then described LSP for subsequent use activates successfully;
End-node, be used for receiving the first message from upstream node, described the first message comprises the first identification information of described LSP for subsequent use, search path status controll block PSB corresponding to described LSP for subsequent use according to the first identification information of described LSP for subsequent use, with the guard mode of LSP for subsequent use described in the described PSB from for subsequent use change to primary, obtain this locality corresponding to described LSP for subsequent use according to described PSB and intersect, activate described local the intersection; After described local intersection activates successfully, send the second message to described upstream node, described the second message comprises the second identification information of described LSP for subsequent use.
The embodiment of the invention is by receiving the first message from upstream node; described the first message comprises the first identification information of described LSP for subsequent use; search path status controll block PSB corresponding to described LSP for subsequent use according to the first identification information of described LSP for subsequent use; with the guard mode of LSP for subsequent use described in the described PSB from for subsequent use change to primary; obtaining this locality corresponding to described LSP for subsequent use according to described PSB intersects; activate described local the intersection; if this node is end-node; then after described local intersection activates successfully; send the second message to described upstream node; described the second message comprises the second identification information of described LSP for subsequent use; if this node is intermediate node; then send to downstream node described the first message; reception is from described second message of described downstream node; after described local intersection activates successfully, send described the second message to described upstream node.The first identification information that comprises LSP for subsequent use in the first message, search PSB corresponding to described LSP for subsequent use according to the first identification information of described LSP for subsequent use, therefore do not need to carry PSB information in the first message, obtaining this locality corresponding to described LSP for subsequent use according to described PSB intersects, therefore do not need local intersection information corresponding to carrying about standby LSP in the first message yet, the signaling message bag that carries when therefore the message bag of the first message is than dynamic heavy-route is little, can reduce the transmission time of message and the processing time of message, improve professional restorability.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the Activiation method flow chart of a kind of LSP for subsequent use of providing of the embodiment of the invention;
Fig. 2 is the Activiation method flow chart of the another kind of LSP for subsequent use that provides of the embodiment of the invention;
Fig. 3 is the Activiation method flow chart of another LSP for subsequent use of providing of the embodiment of the invention;
Fig. 4 is the Activiation method flow chart of another LSP for subsequent use of providing of the embodiment of the invention;
Fig. 5 is the active device structure chart of a kind of LSP for subsequent use of providing of the embodiment of the invention;
Fig. 6 is the active device structure chart of the another kind of LSP for subsequent use that provides of the embodiment of the invention;
Fig. 7 is the activation system structure chart of a kind of LSP for subsequent use of providing of the embodiment of the invention;
Fig. 8 is the activation system structure chart of the another kind of LSP for subsequent use that provides of the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The size of the signaling message bag that carries during dynamic heavy-route generally has more than 300 byte, and the communication bandwidth of typical control channel is 576kb/s (72KB/s), and the time t of a signaling message bag of transmission is about 4.2ms between 2 o'clock like this.The processing time p that signaling wraps in node is relevant with the CPU ability, is generally 2-4ms.Supposing to have 64 business to break down simultaneously and start recovery, Max[t is just arranged, p in such 64 business recovery processes] * 64=4*64=256ms is used for transmission and the processing of signaling message bag, and be mainly At All Other Times and intersect settling time.Intersection depends on efficient and the hardware intersection performance of handoffs of network element crossover algorithm settling time.The heavy-route time of typical 64 business is 550ms, and the transmission of signaling bag and processing time have just accounted near 50%.
Message bag in the embodiment of the invention comprises the identification information of LSP for subsequent use, search PSB corresponding to LSP for subsequent use according to the identification information of LSP for subsequent use, the message bag does not need to carry PSB information, obtaining this locality corresponding to described LSP for subsequent use according to described PSB intersects, therefore the message bag does not need local intersection information corresponding to carrying about standby LSP yet, the signaling message bag that carries when therefore the message bag of the first message is than dynamic heavy-route is little, can reduce the transmission time of message and the processing time of message, improve professional restorability.
As shown in Figure 1, the embodiment of the invention provides the Activiation method of a kind of LSP for subsequent use, comprising:
S101, this node receives the first message from upstream node, and described the first message comprises the first identification information of described LSP for subsequent use;
S102, this node is searched path status controll block corresponding to described LSP for subsequent use (Path State Block according to the first identification information of described LSP for subsequent use, PSB), with the guard mode of LSP for subsequent use described in the described PSB from for subsequent use change to primary, obtain this locality corresponding to described LSP for subsequent use according to described PSB and intersect, activate described local the intersection;
S103 if this node is end-node, then after described local intersection activates successfully, sends the second message to described upstream node, and described the second message comprises the second identification information of described LSP for subsequent use; If this node is intermediate node, then send to downstream node described the first message, receive described the second message from described downstream node, after described local intersection activates successfully, send described the second message to described upstream node.
Wherein, described the first identification information comprises described LSP source node address for subsequent use, destination node address, Tunnel Identifier and LSP sign;
Described the second identification information comprises described LSP source node address for subsequent use, destination node address, Tunnel Identifier and LSP sign.
Described in the S102 guard mode of LSP for subsequent use described in the described PSB is changed to primary can specifically comprising from for subsequent use:
S bit in the protection PROTECTION object among the described PSB is set to 0, thus with the guard mode of described LSP for subsequent use from for subsequent use change to primary.
Receive described the second message from described downstream node described in the S103, after described local intersection activated successfully, sending described the second message to described upstream node can specifically comprise:
Search PSB corresponding to described LSP for subsequent use according to the second identification information of described LSP for subsequent use, obtain this locality corresponding to described LSP for subsequent use according to described PSB and intersect, if described local the intersection for activated state then sends described the second message to described upstream node.
Receive described the second message from described downstream node described in the S103, after described local intersection activates successfully, send described the second message to described upstream node and specifically comprise:
Search PSB corresponding to described LSP for subsequent use according to the second identification information of described LSP for subsequent use, obtaining this locality corresponding to described LSP for subsequent use according to described PSB intersects, if described local the intersection is inactive attitude, send described the second message to described upstream node when then waiting for described local intersection for activated state.
In the embodiment of the invention, the first identification information that comprises LSP for subsequent use in the first message, search PSB corresponding to described LSP for subsequent use according to the first identification information of described LSP for subsequent use, therefore do not need to carry PSB information in the first message, obtaining this locality corresponding to described LSP for subsequent use according to described PSB intersects, therefore do not need local intersection information corresponding to carrying about standby LSP in the first message yet, the signaling message bag that carries when therefore the message bag of the first message is than dynamic heavy-route is little, can reduce the transmission time of message and the processing time of message, improve professional restorability.
As shown in Figure 2, the embodiment of the invention provides the Activiation method of another kind of LSP for subsequent use, comprising:
S201, the guard mode of LSP for subsequent use described in first node the path status controll block PSB that described LSP for subsequent use is corresponding changes to primaryly from for subsequent use, activates this locality corresponding to described LSP for subsequent use and intersects;
S202, first node sends the first message to downstream node, and described the first message comprises the first identification information of described LSP for subsequent use;
S203, first node receives the second message from described downstream node, described the second message comprises the second identification information of described LSP for subsequent use, search PSB corresponding to described LSP for subsequent use according to the second identification information of described LSP for subsequent use, obtaining this locality corresponding to described LSP for subsequent use according to described PSB intersects, if described local the intersection is activated state, then described local the intersection activated successfully, and described LSP for subsequent use activates successfully.
In the embodiment of the invention, the second identification information that comprises LSP for subsequent use in the second message, search PSB corresponding to described LSP for subsequent use according to the second identification information of described LSP for subsequent use, therefore do not need to carry PSB information in the second message, obtaining this locality corresponding to described LSP for subsequent use according to described PSB intersects, therefore do not need local intersection information corresponding to carrying about standby LSP in the second message yet, the signaling message bag that carries when therefore the message bag of the second message is than dynamic heavy-route is little, can reduce the transmission time of message and the processing time of message, improve professional restorability.
As shown in Figure 3, the embodiment of the invention provides the Activiation method of another kind of LSP for subsequent use, and first node links to each other with end-node in the present embodiment, does not have intermediate node, and the method comprises:
S301, the guard mode of LSP for subsequent use described in first node the path status controll block PSB that described LSP for subsequent use is corresponding changes to primaryly from for subsequent use, activates this locality corresponding to described LSP for subsequent use and intersects; Send the first message to end-node, described the first message comprises the first identification information of described LSP for subsequent use;
S302, end-node receive to confess one's crime the first message of node, described the first message comprises the first identification information of described LSP for subsequent use, search path status controll block PSB corresponding to described LSP for subsequent use according to the first identification information of described LSP for subsequent use, with the guard mode of LSP for subsequent use described in the described PSB from for subsequent use change to primary, obtaining this locality corresponding to described LSP for subsequent use according to described PSB intersects, activate described local the intersection, after this locality intersection activates successfully, send the second message to first node, described the second message comprises the second identification information of described LSP for subsequent use;
S303, first node receives the second message from end-node, described the second message comprises the second identification information of described LSP for subsequent use, search PSB corresponding to described LSP for subsequent use according to the second identification information of described LSP for subsequent use, obtaining this locality corresponding to described LSP for subsequent use according to described PSB intersects, if described local the intersection is activated state, then described local the intersection activated successfully, and described LSP for subsequent use activates successfully.
In the present embodiment, the first identification information that comprises LSP for subsequent use in the first message, search PSB corresponding to described LSP for subsequent use according to the first identification information of described LSP for subsequent use, therefore do not need to carry PSB information in the first message, obtaining this locality corresponding to described LSP for subsequent use according to described PSB intersects, therefore do not need local intersection information corresponding to carrying about standby LSP in the first message yet, the signaling message bag that carries when therefore the message bag of the first message is than dynamic heavy-route is little, can reduce the transmission time of message and the processing time of message, improve professional restorability.
As shown in Figure 4, the embodiment of the invention provides the Activiation method of another kind of LSP for subsequent use, comprises intermediate node in the middle of first node and the end-node in the present embodiment, and the method comprises:
S401, among first node the path status controll block PSB that LSP for subsequent use is corresponding the guard mode of LSP for subsequent use from for subsequent use change to primary, activate this locality corresponding to LSP for subsequent use and intersect, send to downstream node the first message, described the first message comprises the first identification information of LSP for subsequent use;
After the primary and backup LSP that shares Mesh recovery business creates and finishes, break down in the network and cause sharing the primary LSP interruption that Mesh recovers business, the fault detect node sends RSVP (Resource Reservation Protocol, RSVP) the Notify message that primary LSP interrupts to the first node of business.
After first node is received Notify message, recover professional if judge type of service for sharing Mesh, then begin to activate LSP for subsequent use.At first change to primaryly from for subsequent use LSP guard mode among the PSB of the corresponding LSP for subsequent use in this locality, and begin to activate the intersection of local reservation state corresponding to LSP for subsequent use, send Path ' message to the downstream node of this node on LSP for subsequent use simultaneously.Path ' message is newly-increased RSVP type of message, only comprises LSP sign object in the message.
S402, intermediate node receives the first message from its upstream node, search path status controll block PSB corresponding to LSP for subsequent use according to the first identification information of LSP for subsequent use, with the guard mode of LSP for subsequent use among the described PSB from for subsequent use change to primary, obtaining this locality corresponding to LSP for subsequent use according to described PSB intersects, activate described local the intersection, send described the first message to its downstream node;
After intermediate node is received Path ' message; from message, parse the identification information of LSP for subsequent use; search the PSB of local corresponding this LSP; then with the LSP guard mode among the PSB from for subsequent use change to primary; and beginning to activate the intersection of local reservation state corresponding to LSP for subsequent use, this node continues to send Path ' message to the downstream node of LSP for subsequent use simultaneously.
S403, end-node receives the first message from its upstream node, search path status controll block PSB corresponding to described LSP for subsequent use according to the first identification information of described LSP for subsequent use, with the guard mode of LSP for subsequent use described in the described PSB from for subsequent use change to primary, obtaining this locality corresponding to described LSP for subsequent use according to described PSB intersects, activate described local the intersection, after described local intersection activates successfully, send the second message to its upstream node, described the second message comprises the second identification information of described LSP for subsequent use;
After end-node is received Path ' message; from message, parse the identification information of LSP for subsequent use; search the PSB of local corresponding this LSP, then change to primaryly from for subsequent use LSP guard mode among the PSB, and begin to activate the intersection of local reservation state corresponding to LSP for subsequent use.Upstream nodes was returned Resv ' message after intersection activated successfully.Resv ' message is newly-increased RSVP type of message, only comprises LSP sign object in the message.
S404, intermediate node receives the second message from its downstream node, after its local intersection activates successfully, sends described the second message to its upstream node;
After intermediate node is received Resv ' message, from message, parse the identification information of LSP for subsequent use, search the RSB (Resv State Block/ reservation state controll block) of local corresponding this LSP.If the intersection of the local reservation state that LSP for subsequent use is corresponding is successfully activated, then continue upstream nodes and send Resv ' message, otherwise wait for above-mentioned intersection activates successfully after upstream nodes transmission Resv ' message again.
S405, first node receives the second message from its downstream node, if its local intersection is activated successfully, then described LSP for subsequent use activates successfully.
After first node is received Resv ' message, from message, parse the identification information of LSP for subsequent use, search the RSB of local corresponding this LSP.If the intersection of the local reservation state that LSP for subsequent use is corresponding is successfully activated, then LSP for subsequent use is end-to-end activates successfully, and business recovery is finished.
The below provides the object structure of a kind of newly-increased signaling message Path ' and Resv ':
<Path’Message>::＝<Common Header>[<MESSAGE_ID>]
<LSP_PATH_ID>
<Resv’Message>::＝<Common Header>[<MESSAGE_ID>]
<LSP_PATH_ID>
Wherein the object structure of LSP_PATH_ID is:
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Length | Class-Num | C-Type (1) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| IPv4 tunnel sender address |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| IPv4 tunnel end point address |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Tunnel ID | LSP ID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Wherein IPv4 tunnel sender address is the LSP source IP address; IPv4 tunnel end point address is IP address, LSP place; Tunnel ID is Tunnel Identifier; LSP ID is the LSP sign.
Present embodiment can promote the business recovery performance, especially when batch service is recovered.Maximum message length=8+12+16=36 of Path '/Resv ', the transmission time (adding 20 bytes of IP head) of new signaling message bag is about 0.8ms.Because the object that new signaling message comprises is few, the node processing time is corresponding minimizing also, and according to existing CPU energy force evaluating, the processing time also can be less than 1ms.Like this, said 64 service recovery times in front can reduce 3*64=192ms, namely reduce to 358ms from 550ms.In fact owing to the time decreased of node processing signaling bag, node has more cpu resources to move quickly crossover algorithm, and also can reduce whole like this recovery time.
Present embodiment can promote the restorability of sharing in batches the MESH business by a relatively large margin, reduces service outage duration.Satisfy the professional 200ms of small lot as far as possible and recover operator's demand that 2s in enormous quantities recovers.The present embodiment technical scheme takes to expand the method for existing RSVP-TE signaling protocol, and the seamless fusion of existing signaling mechanism, and the various exception handlings of existing signaling are also inherited fully, make the realization cost of the inventive method also less.
In the present embodiment, the first identification information that comprises LSP for subsequent use in the first message, search PSB corresponding to described LSP for subsequent use according to the first identification information of described LSP for subsequent use, therefore do not need to carry PSB information in the first message, obtaining this locality corresponding to described LSP for subsequent use according to described PSB intersects, therefore do not need local intersection information corresponding to carrying about standby LSP in the first message yet, the signaling message bag that carries when therefore the message bag of the first message is than dynamic heavy-route is little, can reduce the transmission time of message and the processing time of message, improve professional restorability.
As shown in Figure 5, the embodiment of the invention provides the active device 500 of a kind of LSP for subsequent use, comprising:
Receiving element 501 is used for receiving the first message from upstream node, and described the first message comprises the first identification information of described LSP for subsequent use;
Activate unit 502, be used for searching path status controll block PSB corresponding to described LSP for subsequent use according to the first identification information of described LSP for subsequent use, with the guard mode of LSP for subsequent use described in the described PSB from for subsequent use change to primary, obtain this locality corresponding to described LSP for subsequent use according to described PSB and intersect, activate described local the intersection;
Transmitting element 503 is end-node if be used for this node, then after described local intersection activates successfully, sends the second message to described upstream node, and described the second message comprises the second identification information of described LSP for subsequent use; If this node is intermediate node, then send to downstream node described the first message, receive described the second message from described downstream node, after described local intersection activates successfully, send described the second message to described upstream node.
If this node is intermediate node, then described transmitting element 503 is used for sending to downstream node described the first message, reception is from described second message of described downstream node, search PSB corresponding to described LSP for subsequent use according to the second identification information of described LSP for subsequent use, obtaining this locality corresponding to described LSP for subsequent use according to described PSB intersects, if described local the intersection for activated state, then send described the second message to described upstream node.
If this node is intermediate node, then described transmitting element 503 is used for sending to downstream node described the first message, reception is from described second message of described downstream node, search PSB corresponding to described LSP for subsequent use according to the second identification information of described LSP for subsequent use, obtaining this locality corresponding to described LSP for subsequent use according to described PSB intersects, if described local the intersection is inactive attitude, send described the second message to described upstream node when then waiting for described local intersection for activated state.
In the present embodiment, the first identification information that comprises LSP for subsequent use in the first message, search PSB corresponding to described LSP for subsequent use according to the first identification information of described LSP for subsequent use, therefore do not need to carry PSB information in the first message, obtaining this locality corresponding to described LSP for subsequent use according to described PSB intersects, therefore do not need local intersection information corresponding to carrying about standby LSP in the first message yet, the signaling message bag that carries when therefore the message bag of the first message is than dynamic heavy-route is little, can reduce the transmission time of message and the processing time of message, improve professional restorability.
As shown in Figure 6, the embodiment of the invention provides the active device 600 of another kind of LSP for subsequent use, comprising:
Activate unit 601, the guard mode that is used for LSP for subsequent use described in the path status controll block PSB that described LSP for subsequent use is corresponding changes to primaryly from for subsequent use, activates this locality intersection corresponding to described LSP for subsequent use;
Transmitting element 602 is used for sending the first message to downstream node, and described the first message comprises the first identification information of described LSP for subsequent use;
Receiving element 603, be used for receiving the second message from described downstream node, described the second message comprises the second identification information of described LSP for subsequent use, search PSB corresponding to described LSP for subsequent use according to the second identification information of described LSP for subsequent use, obtaining this locality corresponding to described LSP for subsequent use according to described PSB intersects, if described local the intersection is activated state, then described local the intersection activated successfully, and described LSP for subsequent use activates successfully.
In the embodiment of the invention, the second identification information that comprises LSP for subsequent use in the second message, search PSB corresponding to described LSP for subsequent use according to the second identification information of described LSP for subsequent use, therefore do not need to carry PSB information in the second message, obtaining this locality corresponding to described LSP for subsequent use according to described PSB intersects, therefore do not need local intersection information corresponding to carrying about standby LSP in the second message yet, the signaling message bag that carries when therefore the message bag of the second message is than dynamic heavy-route is little, can reduce the transmission time of message and the processing time of message, improve professional restorability.
As shown in Figure 7, the embodiment of the invention provides the activation system of a kind of LSP for subsequent use, comprises first node and end-node, does not have intermediate node between first node and the end-node, and this system comprises:
First node 701, the guard mode that is used for LSP for subsequent use described in the path status controll block PSB that described LSP for subsequent use is corresponding from for subsequent use change to primary, activating this locality corresponding to described LSP for subsequent use intersects, send to downstream node the first message, described the first message comprises the first identification information of described LSP for subsequent use; Reception is from the second message of described downstream node, and described the second message comprises the second identification information of described LSP for subsequent use, if described local the intersection activated successfully, then described LSP for subsequent use activates successfully;
End-node 702, be used for receiving the first message from upstream node, described the first message comprises the first identification information of described LSP for subsequent use, search path status controll block PSB corresponding to described LSP for subsequent use according to the first identification information of described LSP for subsequent use, with the guard mode of LSP for subsequent use described in the described PSB from for subsequent use change to primary, obtain this locality corresponding to described LSP for subsequent use according to described PSB and intersect, activate described local the intersection; After described local intersection activates successfully, send the second message to described upstream node, described the second message comprises the second identification information of described LSP for subsequent use.
In the embodiment of the invention, the first identification information that comprises LSP for subsequent use in the first message, search PSB corresponding to described LSP for subsequent use according to the first identification information of described LSP for subsequent use, therefore do not need to carry PSB information in the first message, obtaining this locality corresponding to described LSP for subsequent use according to described PSB intersects, therefore do not need local intersection information corresponding to carrying about standby LSP in the first message yet, the signaling message bag that carries when therefore the message bag of the first message is than dynamic heavy-route is little, can reduce the transmission time of message and the processing time of message, improve professional restorability.
As shown in Figure 8, the embodiment of the invention provides the activation system of a kind of LSP for subsequent use, comprises first node and end-node, also comprises intermediate node between first node and the end-node, and this system comprises:
First node 801, the guard mode that is used for LSP for subsequent use described in the path status controll block PSB that described LSP for subsequent use is corresponding from for subsequent use change to primary, activating this locality corresponding to described LSP for subsequent use intersects, send to downstream node the first message, described the first message comprises the first identification information of described LSP for subsequent use; Reception is from the second message of described downstream node, and described the second message comprises the second identification information of described LSP for subsequent use, if described local the intersection activated successfully, then described LSP for subsequent use activates successfully;
Intermediate node 803; be used for receiving described the first message from upstream node; search path status controll block PSB corresponding to described LSP for subsequent use according to the first identification information of described LSP for subsequent use; with the guard mode of LSP for subsequent use described in the described PSB from for subsequent use change to primary; obtaining this locality corresponding to described LSP for subsequent use according to described PSB intersects; activate described local the intersection; send to downstream node described the first message; reception is from the second message of described downstream node; after described local intersection activates successfully, send described the second message to described upstream node.
End-node 802, be used for receiving the first message from upstream node, described the first message comprises the first identification information of described LSP for subsequent use, search path status controll block PSB corresponding to described LSP for subsequent use according to the first identification information of described LSP for subsequent use, with the guard mode of LSP for subsequent use described in the described PSB from for subsequent use change to primary, obtain this locality corresponding to described LSP for subsequent use according to described PSB and intersect, activate described local the intersection; After described local intersection activates successfully, send the second message to described upstream node, described the second message comprises the second identification information of described LSP for subsequent use.
In the embodiment of the invention, the first identification information that comprises LSP for subsequent use in the first message, search PSB corresponding to described LSP for subsequent use according to the first identification information of described LSP for subsequent use, therefore do not need to carry PSB information in the first message, obtaining this locality corresponding to described LSP for subsequent use according to described PSB intersects, therefore do not need local intersection information corresponding to carrying about standby LSP in the first message yet, the signaling message bag that carries when therefore the message bag of the first message is than dynamic heavy-route is little, can reduce the transmission time of message and the processing time of message, improve professional restorability.
Device embodiment described above and system embodiment only are schematic, wherein said unit as the separating component explanation can or can not be physically to separate also, the parts that show as the unit can be or can not be physical locations also, namely can be positioned at a place, perhaps also can be distributed on a plurality of network element.Can select according to the actual needs wherein some or all of module to realize the purpose of present embodiment scheme.Those of ordinary skills namely can understand and implement in the situation of not paying performing creative labour.
Through the above description of the embodiments, those skilled in the art can be well understood to each execution mode and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware.Based on such understanding, the part that technique scheme contributes to prior art in essence in other words can embody with the form of software product, this computer software product can be stored in the computer-readable recording medium, such as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be personal computer, server, perhaps network equipment etc.) carry out the described method of some part of each embodiment or embodiment.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.

Claims (13)

1.一种备用标签交换路径LSP的激活方法，其特征在于，包括：1. an activation method of a standby label switched path LSP, characterized in that, comprising: 本节点接收来自上游节点的第一消息，所述第一消息包括所述备用LSP的第一标识信息；The node receives a first message from an upstream node, where the first message includes first identification information of the backup LSP; 本节点根据所述备用LSP的第一标识信息查找所述备用LSP对应的路径状态控制块PSB，将所述PSB中所述备用LSP的保护状态从备用更改为主用，根据所述PSB获得所述备用LSP对应的本地交叉，激活所述本地交叉；The node searches for the path state control block PSB corresponding to the standby LSP according to the first identification information of the standby LSP, changes the protection status of the standby LSP in the PSB from standby to active, and obtains the path state control block PSB corresponding to the standby LSP according to the PSB. The local crossover corresponding to the standby LSP is activated, and the local crossover is activated; 若本节点为末节点，则在所述本地交叉激活成功后，向所述上游节点发送第二消息，所述第二消息包括所述备用LSP的第二标识信息；If the current node is the last node, after the local cross activation is successful, send a second message to the upstream node, where the second message includes the second identification information of the backup LSP; 若本节点为中间节点，则向下游节点发送所述第一消息，接收来自所述下游节点的所述第二消息，在所述本地交叉激活成功后，向所述上游节点发送所述第二消息。If the current node is an intermediate node, send the first message to the downstream node, receive the second message from the downstream node, and send the second message to the upstream node after the local cross activation is successful. information. 2.根据权利要求1所述的方法，其特征在于，包括：2. The method of claim 1, comprising: 所述第一标识信息包括所述备用LSP源节点地址、宿节点地址、隧道标识和LSP标识；The first identification information includes the standby LSP source node address, sink node address, tunnel identification and LSP identification; 所述第二标识信息包括所述备用LSP源节点地址、宿节点地址、隧道标识和LSP标识。The second identification information includes the standby LSP source node address, sink node address, tunnel ID and LSP ID. 3.根据权利要求1所述的方法，其特征在于，所述将所述PSB中所述备用LSP的保护状态从备用更改为主用具体包括：3. The method according to claim 1, wherein the changing the protection state of the standby LSP in the PSB from standby to active specifically comprises: 将所述PSB中的保护PROTECTION对象中的S比特设置为0，从而将所述备用LSP的保护状态从备用更改为主用。Set the S bit in the PROTECTION object in the PSB to 0, thereby changing the protection status of the standby LSP from standby to active. 4.根据权利要求1所述的方法，其特征在于，所述接收来自所述下游节点的所述第二消息，在所述本地交叉激活成功后，向所述上游节点发送所述第二消息具体包括：4. The method according to claim 1, wherein the receiving the second message from the downstream node sends the second message to the upstream node after the local cross activation is successful Specifically include: 根据所述备用LSP的第二标识信息查找所述备用LSP对应的PSB，根据所述PSB获得所述备用LSP对应的本地交叉，若所述本地交叉为激活态，则向所述上游节点发送所述第二消息。Find the PSB corresponding to the standby LSP according to the second identification information of the standby LSP, obtain the local crossover corresponding to the standby LSP according to the PSB, and if the local crossover is active, send the State the second message. 5.根据权利要求1所述的方法，其特征在于，所述接收来自所述下游节点的所述第二消息，在所述本地交叉激活成功后，向所述上游节点发送所述第二消息具体包括：5. The method according to claim 1, wherein the receiving the second message from the downstream node sends the second message to the upstream node after the local cross activation is successful Specifically include: 根据所述备用LSP的第二标识信息查找所述备用LSP对应的PSB，根据所述PSB获得所述备用LSP对应的本地交叉，若所述本地交叉为非激活态，则等待所述本地交叉为激活态时向所述上游节点发送所述第二消息。Find the PSB corresponding to the standby LSP according to the second identification information of the standby LSP, obtain the local crossover corresponding to the standby LSP according to the PSB, and if the local crossover is inactive, wait for the local crossover to be Sending the second message to the upstream node in an activated state. 6.一种备用标签交换路径LSP的激活方法，其特征在于，包括：6. A method for activating a standby label switched path LSP, characterized in that it comprises: 首节点将所述备用LSP对应的路径状态控制块PSB中所述备用LSP的保护状态从备用更改为主用，激活所述备用LSP对应的本地交叉；The head node changes the protection state of the standby LSP in the path state control block PSB corresponding to the standby LSP from standby to active, and activates the local crossover corresponding to the standby LSP; 首节点向下游节点发送第一消息，所述第一消息包括所述备用LSP的第一标识信息；The head node sends a first message to a downstream node, where the first message includes first identification information of the backup LSP; 首节点接收来自所述下游节点的第二消息，所述第二消息包括所述备用LSP的第二标识信息，根据所述备用LSP的第二标识信息查找所述备用LSP对应的PSB，根据所述PSB获得所述备用LSP对应的本地交叉，若所述本地交叉为激活态，则所述本地交叉激活成功，所述备用LSP激活成功。The head node receives the second message from the downstream node, the second message includes the second identification information of the standby LSP, searches for the PSB corresponding to the standby LSP according to the second identification information of the standby LSP, and according to the The PSB obtains the local cross-connect corresponding to the standby LSP, and if the local cross-connect is activated, the activation of the local cross-connect is successful, and the activation of the standby LSP is successful. 7.一种备用标签交换路径LSP的激活装置，其特征在于，包括：7. A device for activating a standby label switched path LSP, characterized in that it comprises: 接收单元，用于接收来自上游节点的第一消息，所述第一消息包括所述备用LSP的第一标识信息；a receiving unit, configured to receive a first message from an upstream node, where the first message includes first identification information of the backup LSP; 激活单元，用于根据所述备用LSP的第一标识信息查找所述备用LSP对应的路径状态控制块PSB，将所述PSB中所述备用LSP的保护状态从备用更改为主用，根据所述PSB获得所述备用LSP对应的本地交叉，激活所述本地交叉；An activation unit, configured to search for a path state control block PSB corresponding to the standby LSP according to the first identification information of the standby LSP, and change the protection state of the standby LSP in the PSB from standby to active, according to the The PSB obtains the local crossover corresponding to the standby LSP, and activates the local crossover; 发送单元，用于若本节点为末节点，则在所述本地交叉激活成功后，向所述上游节点发送第二消息，所述第二消息包括所述备用LSP的第二标识信息；若本节点为中间节点，则向下游节点发送所述第一消息，接收来自所述下游节点的所述第二消息，在所述本地交叉激活成功后，向所述上游节点发送所述第二消息。A sending unit, configured to send a second message to the upstream node after the local cross activation is successful if the current node is the end node, where the second message includes the second identification information of the backup LSP; If the node is an intermediate node, it sends the first message to a downstream node, receives the second message from the downstream node, and sends the second message to the upstream node after the local cross activation is successful. 8.根据权利要求7所述的装置，其特征在于，若本节点为中间节点，则所述发送单元用于向下游节点发送所述第一消息，接收来自所述下游节点的所述第二消息，根据所述备用LSP的第二标识信息查找所述备用LSP对应的PSB，根据所述PSB获得所述备用LSP对应的本地交叉，若所述本地交叉为激活态，则向所述上游节点发送所述第二消息。8. The device according to claim 7, wherein if the present node is an intermediate node, the sending unit is configured to send the first message to a downstream node, and receive the second message from the downstream node. message, search for the PSB corresponding to the standby LSP according to the second identification information of the standby LSP, obtain the local crossover corresponding to the standby LSP according to the PSB, and if the local crossover is active, send the Send the second message. 9.根据权利要求7所述的装置，其特征在于，若本节点为中间节点，则所述发送单元用于向下游节点发送所述第一消息，接收来自所述下游节点的所述第二消息，根据所述备用LSP的第二标识信息查找所述备用LSP对应的PSB，根据所述PSB获得所述备用LSP对应的本地交叉，若所述本地交叉为非激活态，则等待所述本地交叉为激活态时向所述上游节点发送所述第二消息。9. The device according to claim 7, wherein if the current node is an intermediate node, the sending unit is configured to send the first message to a downstream node, and receive the second message from the downstream node message, search for the PSB corresponding to the standby LSP according to the second identification information of the standby LSP, obtain the local crossover corresponding to the standby LSP according to the PSB, and wait for the local crossover if the local crossover is inactive sending the second message to the upstream node when the crossover is in an active state. 10.一种备用标签交换路径LSP的激活装置，其特征在于，包括：10. A device for activating a standby label switched path LSP, characterized in that it comprises: 激活单元，用于将所述备用LSP对应的路径状态控制块PSB中所述备用LSP的保护状态从备用更改为主用，激活所述备用LSP对应的本地交叉；An activation unit, configured to change the protection state of the standby LSP in the path state control block PSB corresponding to the standby LSP from standby to active, and activate the local crossover corresponding to the standby LSP; 发送单元，用于向下游节点发送第一消息，所述第一消息包括所述备用LSP的第一标识信息；a sending unit, configured to send a first message to a downstream node, where the first message includes first identification information of the backup LSP; 接收单元，用于接收来自所述下游节点的第二消息，所述第二消息包括所述备用LSP的第二标识信息，根据所述备用LSP的第二标识信息查找所述备用LSP对应的PSB，根据所述PSB获得所述备用LSP对应的本地交叉，若所述本地交叉为激活态，则所述本地交叉激活成功，所述备用LSP激活成功。A receiving unit, configured to receive a second message from the downstream node, where the second message includes second identification information of the backup LSP, and search for a PSB corresponding to the backup LSP according to the second identification information of the backup LSP , obtaining a local cross-connect corresponding to the standby LSP according to the PSB, and if the local cross-connect is activated, the local cross-connect is successfully activated, and the standby LSP is successfully activated. 11.一种备用标签交换路径LSP的激活系统，其特征在于，包括：11. A system for activating a standby label switched path LSP, characterized in that it comprises: 首节点，用于将所述备用LSP对应的路径状态控制块PSB中所述备用LSP的保护状态从备用更改为主用，激活所述备用LSP对应的本地交叉，向下游节点发送第一消息，所述第一消息包括所述备用LSP的第一标识信息；接收来自所述下游节点的第二消息，所述第二消息包括所述备用LSP的第二标识信息，若所述本地交叉激活成功，则所述备用LSP激活成功；The head node is configured to change the protection state of the standby LSP in the path state control block PSB corresponding to the standby LSP from standby to active, activate the local crossover corresponding to the standby LSP, and send a first message to a downstream node, The first message includes the first identification information of the backup LSP; receiving a second message from the downstream node, the second message includes the second identification information of the backup LSP, if the local cross activation is successful , the standby LSP is successfully activated; 末节点，用于接收来自上游节点的第一消息，所述第一消息包括所述备用LSP的第一标识信息，根据所述备用LSP的第一标识信息查找所述备用LSP对应的路径状态控制块PSB，将所述PSB中所述备用LSP的保护状态从备用更改为主用，根据所述PSB获得所述备用LSP对应的本地交叉，激活所述本地交叉；在所述本地交叉激活成功后，向所述上游节点发送第二消息，所述第二消息包括所述备用LSP的第二标识信息。An end node, configured to receive a first message from an upstream node, where the first message includes first identification information of the backup LSP, and search for a path state control corresponding to the backup LSP according to the first identification information of the backup LSP block PSB, change the protection state of the standby LSP in the PSB from standby to active, obtain the local crossover corresponding to the standby LSP according to the PSB, and activate the local crossover; after the local crossover is successfully activated , sending a second message to the upstream node, where the second message includes second identification information of the standby LSP. 12.根据权利要求11所述的系统，其特征在于，所述首节点的下游节点为所述末节点。12. The system according to claim 11, wherein the downstream node of the first node is the last node. 13.根据权利要求11所述的系统，其特征在于，所述首节点和所述末节点之间还包括中间节点；13. The system according to claim 11, wherein an intermediate node is further included between the first node and the last node; 所述中间节点，用于接收来自上游节点的所述第一消息，根据所述备用LSP的第一标识信息查找所述备用LSP对应的路径状态控制块PSB，将所述PSB中所述备用LSP的保护状态从备用更改为主用，根据所述PSB获得所述备用LSP对应的本地交叉，激活所述本地交叉，向下游节点发送所述第一消息，接收来自所述下游节点的第二消息，在所述本地交叉激活成功后，向所述上游节点发送所述第二消息。The intermediate node is configured to receive the first message from the upstream node, search for the path state control block PSB corresponding to the standby LSP according to the first identification information of the standby LSP, and store the standby LSP in the PSB Change the protection state of the backup LSP from standby to active, obtain the local crossover corresponding to the standby LSP according to the PSB, activate the local crossover, send the first message to the downstream node, and receive the second message from the downstream node , sending the second message to the upstream node after the local cross activation is successful.
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