CN101924599A - Method and device for acquiring damage information of traffic engineering (TE) link - Google Patents
Method and device for acquiring damage information of traffic engineering (TE) link Download PDFInfo
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Abstract
The embodiment of the invention provides a method and a device for acquiring damage information of a traffic engineering (TE) link. The method mainly comprises the following steps of: receiving a message sent by an adjacent previous node on a TE link by an OA (Optical Amplifier) node on the TE link; adding relative link damage information of the OA node to the message by the OA node, wherein the link damage information comprises the link damage information of the OA node and at least one item of the link damage information between the OA node and the previous node; and sending an updated message to a next node on the TE link by the OA node. By utilizing the invention, the link damage information of OA nodes passing through a TE link can be effectively collected so as to acquire the damage information of the whole TE link.
Description
Technical field
The present invention relates to technical field of optical network communication, relate in particular to the method and the device of the link damage information of a kind of TE of obtaining (Traffic Engineering, traffic engineering) link.
Background technology
WDM (wavelength division multiplex, wavelength division multiplexing) optical-fiber network can carry out multiplexing, transmission, amplification, routing and the recovery of signal in the light territory, has become the focus of optical communication field research.Whether the node according to the WDM optical-fiber network carries out the electric treatment of light signal, and the WDM optical-fiber network can be divided into two types on WDM transparent network and the opaque network of WDM.
For the WDM transparent optical networks, signal from source node to the destination node transport process all the time the form with light signal carry out, can make light signal cross the electric treatment process of intermediate node, directly arrive destination node, thereby realize the non-relay long Distance Transmission of light signal.The WDM transparent optical networks can be supported the signal of various forms, various speed and agreement.
But the WDM transparent optical networks can cause the decreased performance of the light signal that transmits simultaneously, and along with the increase of the expansion of network size and transmission range and become more and more serious.The performance factor of above-mentioned light signal mainly comprises: optical fiber dispersion, nonlinear fiber, crosstalk (particularly with frequently crosstalk), EDFA (Erbium-doped Optical Fiber Amplifer, erbium-doped fiber amplifier) noise storage etc., these performance factors also are called the impairment parameter of link.
In the WDM transparent optical networks, behind given one group of connection request, need set up route and distribute wavelength for this connection request, and when setting up the light path connection, the impairment parameter that also needs the above-mentioned link in the collection network is with the normally transmission of carrying signal of light path that guarantees to set up.
A kind of topological diagram of typical WDM network mainly comprises as shown in Figure 1: PXC (Photonic Cross-Connect, cross unit), OLS (Optical Line Segment, light department unit), wherein, comprise a plurality of OA (Optical Amplifier, image intensifer) node among the OLS.
PXC among above-mentioned Fig. 1 possesses function of exchange, can change the direction of the business that receives, such as, the PXC unit marks among Fig. 11,2,3 ports, the business of coming in from 1 port can be switched to 2 port direction, also can be switched to 3 port direction.When setting up professional end to end a connection, when business through the PXC node time, guarantee establishment of connection thereby need carry out suitable configuration to this PXC node usually.
The function of OLS mainly is to finish the regeneration function of signal, thereby guarantees that service signal can transmit farther distance.This unit does not possess exchange capacity, promptly generally fixedlys connected between OA node and switching node or OA node and the OA node.
In the WDM transparent optical networks, the node of control plane management generally only refers to the PXC node.After having set up route to connection request and having distributed wavelength, the signaling of control plane is directly by the transmission of PXC node.But owing to may pass through a plurality of OA nodes between two PXC nodes, OA node itself can bring the performance damage of the TE Link between above-mentioned two PXC nodes, so must consider the performance damage of OA node to TE Link in setting up the process of route.
A kind of OA of obtaining node of the prior art to the method for the performance damage of TE Link is: also as the node of control plane management, the OA node possesses the control plane function same with the PXC node with the OA node.The OA node is the same with the PXC node, use OSPF (Open Shortest Path First, Open Shortest Path First) etc. Routing Protocol to the link attribute information of the whole network issue OA node, thereby each node on the network all can obtain the link attribute information of above-mentioned OA node.
In realizing process of the present invention, the inventor finds the above-mentioned OA of obtaining node of the prior art, and there are the following problems at least to the method for the performance damage of TE Link:
1, considers that from standardized angle the OA node does not belong to the PXC node, is not suitable for control plane and manages.
2, when the transmission range of network is long, when having more OA node, the link attribute between OA and PXC node and OA node and the OA node all needs to carry out inundation, needing in the network to cause data quantity transmitted to increase considerably.
3, the signaling of control plane need be passed through the OA node, but the OA node do not need signaling is handled substantially, has increased the redundancy of signaling process.
Summary of the invention
Embodiments of the invention provide a kind of method and device that obtains the link damage information of TE Link, to increase data quantity transmitted in little amplitude, do not increase under the situation of redundancy of signaling process, obtain the damage information of OA node to TE Link effectively.
(corresponding) with claims
The technical scheme that is provided by the embodiment of the invention described above as can be seen, the OA node of process increases the relevant link damage information of this OA node and sends on the embodiment of the invention TE Link in the message that receives, thereby can collect the link damage information of the OA node of process on the TE Link effectively, avoid that the link attribute between OA node and the OA node is carried out inundation and cause the situation that needs data quantity transmitted to increase considerably in the network.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the topological diagram of a kind of typical WDM network of the prior art;
The process chart of the method for the link damage information of TE Link in a kind of WDM of obtaining network that Fig. 2 provides for the embodiment of the invention one;
The topological diagram of a kind of WDM network that Fig. 3 provides for the embodiment of the invention one;
The specific implementation structure chart of the device of the link damage information of a kind of delivery flow rate engineering link that Fig. 4 provides for the embodiment of the invention;
The specific implementation structure chart of the device of the link damage information of a kind of delivery flow rate engineering link that Fig. 5 provides for the embodiment of the invention;
The specific implementation structure chart of the device of the link damage information of a kind of delivery flow rate engineering link that Fig. 6 provides for the embodiment of the invention.
Embodiment
For ease of understanding, be that example is further explained explanation below in conjunction with accompanying drawing with several specific embodiments, and each embodiment does not constitute the qualification to the embodiment of the invention to the embodiment of the invention.
Embodiment one
This embodiment is by expansion LMP (Link Management Protocol, LMP Link Manager Protocol) the TE Link attribute consistency desired result process of agreement is finished the collection and the mapping of the link attribute informations such as impairment parameter of two OA nodes between the PXC switching node.
The handling process of the method for the link damage information of TE Link comprises following treatment step as shown in Figure 2 in a kind of WDM of obtaining network that this embodiment provides:
A critical function of existing LMP agreement is to carry out TE Link attribute consistency desired result, and the attribute of this TE Link is guaranteed the configuration consistency of TE Link attribute on two end nodes synchronously.
On the TE Link between two PXC nodes, certain PXC node at first by the LinkSummery message of LMP agreement, is initiated the consistency desired result process of the attribute of above-mentioned TE Link.
Such as, in the topological schematic diagram of WDM network shown in Figure 3, NodeA and NodeD be not for being positioned at two PXC nodes at the two ends of a TE Link respectively, and NodeB is the OA node, and NodeC is the OA node.
At first, the NodeA that is positioned at an end of TE Link initiates the consistency desired result process of above-mentioned TE Link attribute, send the LinkSummery message of expanding (being the LinkSummery message among Fig. 3) to NodeB, in the LinkSummery message of this expansion except having comprised data link in the above-mentioned TE Link in the link-state information of local node (being NodeA), such as, link-local ID, opposite end link ID, type of coding, link properties such as minimax bandwidth and used wavelength.Also comprised data link in the above-mentioned TE Link at the link damage information of local node (being NodeA).
Above-mentioned LinkSummery message adopts UDP (UserDatagramProtocol, User Datagram Protoco (UDP)) agreement to transmit, and the destination address of above-mentioned LinkSummery message extends this as the address of adjacent node (being NodeB).
All comprise object Message_Id (message identifier) in above-mentioned LinkSummery message, LinkSummeryAck message and the LinkSummeryNack message.
The embodiment of the invention is also carried a checking mark in above-mentioned LinkSummery message, this checking mark can be a specific character string or numerical value, is used to verify whether the response message that above-mentioned NodeA receives is the response message of above-mentioned LinkSummery message.In the present embodiment, if above-mentioned NodeA has received the LinkSummeryAck message of carrying above-mentioned checking mark that the NodeD of the other end that is positioned at TE Link returns, the consistency desired result success of TE Link attribute is described then; If what receive is LinkSummeryNack message, the consistency desired result failure of TE Link attribute is described then.
The OA node of step 22, centre is after receiving LinkSummery message, and the link damage information that self is relevant adds in the LinkSummary message, and the LinkSummary forwards after upgrading is arrived next node.
In embodiments of the present invention, after the OA node of the centre on the TE Link receives the message of the upward adjacent last node transmission of TE, the OA node of this centre increases the relevant link damage information of this OA node in described message, and the described message after will upgrading sends to upward adjacent next node of described TE.Described the relevant link damage information of OA node comprises: at least one item in the link damage information between the link damage information of described OA node, described OA node and the described last node.
Such as, after NodeB receives above-mentioned LinkSummery message, because it self is the OA node of the centre on the TE Link but not switching node that NodeB knows, NodeB need upgrade this LinkSummery message, and the LinkSummery message after will upgrading continues to be forwarded to next node.NodeB LinkSummaryWait of loopback (being the LinkSummaryWait message among Fig. 3) of elder generation message is given NodeA.
If above-mentioned NodeA is sending above-mentioned LinkSummery message (being the LinkSummery message among Fig. 3) afterwards, in the response time section of setting, do not receive above-mentioned LinkSummaryWait message, then can continue to retransmit above-mentioned LinkSummery message (being the LinkSummery message among Fig. 3), up to receiving response or retransmitting the number that number of times reaches setting.
The link damage information that NodeB is relevant with self adds in the LinkSummary message, and this self relevant link damage information comprises: at least one item in the link damage information between the link damage information of NodeB, NodeB and the adjacent last node.When the link damage information of not considering NodeB during to the damage of the link of whole TE Link, this self relevant link damage information can include only the link damage information between NodeB and the adjacent last node; Equally, when not considering that link damage information between NodeB and the adjacent last node is to the link damage of whole TE Link, this self relevant link damage information can include only the link damage information of NodeB.
At present embodiment, NodeB adds self link damage information and the link damage information between NodeB and the NodeA to from the LinkSummary message that NodeA receives, LinkSummary (being the 2nd LinkSummary message among Fig. 3) forwards after upgrading is arrived next node: NodeC.The Message_Id of the LinkSummary message among LinkSummary (being the 2nd LinkSummary message among Fig. 3) message after above-mentioned NodeB upgrades and above-mentioned Fig. 3 is different, but still carries above-mentioned checking mark among the LinkSummary after the above-mentioned NodeB renewal.
After NodeC receives LinkSummery message after above-mentioned NodeB upgrades, know it self is OA website but not switching node, NodeC need upgrade this LinkSummery message that receives.NodeC node LinkSummaryAck of loopback (being the LinkSummaryAck message among Fig. 3) of elder generation message is given NodeB.
The link damage information that NodeC is relevant with self adds in the LinkSummary message after the above-mentioned NodeB that receives upgrades, and this self relevant link damage information comprises: at least one item in the link damage information between the link damage information of NodeC, NodeC and the adjacent last node.In the present embodiment, NodeC adds self link damage information and the link damage information between NodeC and the NodeB in the LinkSummary message after above-mentioned NodeB upgrades to.Then, LinkSummary (being the 3rd LinkSummary message among Fig. 3) forwards after NodeC upgrades oneself is to next node NodeD.Still carry above-mentioned checking mark in LinkSummary (being the 3rd LinkSummary message among Fig. 3) message after above-mentioned NodeC upgrades.
After NodeD received the LinkSummary message of above-mentioned NodeC transmission, LinkSummaryAck of first loopback (being the 2nd LinkSummaryAck message among Fig. 3) message was given NodeC.The link damage information that carries in the LinkSummary message that NodeD sends according to described NodeC, and the link damage information of NodeD obtain the link damage information of described flow engineering link.NodeD at first obtains the NodeA, the NodeB that carry in this LinkSummary message and the link damage information of NodeC, and link damage information between NodeA and the NodeB, between NodeC and the NodeB.Then, with the above-mentioned link damage information that obtains, and the link damage information of local node (NodeD), comprise that also the link damage information between NodeD and the NodeC combines, form the damage information of above-mentioned TE Link.
NodeD is kept at the damage information of above-mentioned TE Link in the local data base.At last, LinkSummaryAck of NodeD loopback (being the 3rd LinkSummaryAck message among Fig. 3) message is given NodeA.Still carry above-mentioned checking mark in LinkSummary (being the 3rd LinkSummaryAck message among Fig. 3) message after above-mentioned NodeD upgrades.
After NodeA receives LinkSummary message after above-mentioned NodeD upgrades, according to the above-mentioned checking mark that carries in the LinkSummary message after this NodeD renewal, just know that LinkSummary (being the 3rd LinkSummaryAck message among Fig. 3) message after this NodeD upgrades is the response message of the LinkSummery message (being the LinkSummary message among Fig. 3) of above-mentioned NodeA transmission, thereby the consistency desired result process of confirming above-mentioned TE Link attribute finishes.
In like manner, NodeD also can initiate the consistency desired result process of TE Link attribute, forms the damage information of reciprocal TE Link.
Above-mentioned NodeD announces other modules such as routing module to control plane with the damage information of the TE Link of above-mentioned preservation after the consistency desired result of TE Link attribute finishes.The signaling of control plane can only be transmitted by the PXC node, without the OA node.
Such as, routing module can be gone out the damage information inundation of these TE Links after obtaining the damage information of these TE Links, and can come according to the damage information of this TE Link to create rational path for connection request.
Embodiment two
In this embodiment, the foregoing description one described handling process is improved, in the LinkSummery message of the expansion that NodeA sends, do not carried above-mentioned checking mark.Come when NodeB sends the LinkSummery message of above-mentioned expansion by udp protocol at NodeA, an IP Alert Option option and above-mentioned LinkSummery message are bound together, carry the address of first OA node (being NodeB) in the above-mentioned IP Alert Option option.
After the LinkSummery message of above-mentioned expansion arrives NodeB, NodeB adds the link damage information of self in this LinkSummery message, also add the link damage information between NodeB and the NodeA, and after in above-mentioned IP Alert Option option, increasing the address of next OA node (being NodeC), the LinkSummery message after the NodeB renewal is sent to NodeC.LinkSummery message after above-mentioned NodeB upgrades and above-mentioned NodeA send LinkSummery message in carry identical Message_Id.
Because the address of having carried NodeC in the IP Alert Option option of the LinkSummery message after above-mentioned NodeB upgrades, the LinkSummery message after the above-mentioned renewal will be through NodeC.After NodeC receives LinkSummery message after above-mentioned NodeB upgrades, in this LinkSummery message, add the link damage information of self, also add the link damage information between NodeC and the NodeB, and after in above-mentioned IP Alert Option option, increasing the address of next node (being NodeD), the LinkSummery message after the NodeC renewal is sent to NodeD.LinkSummery message after above-mentioned NodeC upgrades and LinkSummery message, NodeA after above-mentioned NodeB upgrades send LinkSummery message in carry identical Message_Id.
After NodeD receives the LinkSummary message of above-mentioned NodeC transmission, obtain the NodeA, the NodeB that carry in this LinkSummary message and the link damage information of NodeC, and link damage information between NodeA and the NodeB, between NodeC and the NodeB.LinkSummaryAck message of NodeD loopback is given NodeA.Still carry above-mentioned identical Message_Id in this LinkSummaryAck message.
NodeD is with the link damage information of above-mentioned NodeA, NodeB and NodeC, and link damage information between NodeA and the NodeB, between NodeC and the NodeB, and the link damage information of local node (NodeD), comprise that also the link damage information between NodeD and the NodeC combines, form the damage information of above-mentioned TE Link, the damage information of this TE Link is kept in the local data base.
After NodeA receives the LinkSummaryAck message of above-mentioned NodeD transmission, according to the above-mentioned Message_Id that carries among this LinkSummaryAck, just know that this LinkSummaryAck message is the response message of the LinkSummery message of above-mentioned NodeA transmission, thereby the consistency desired result process of confirming above-mentioned TE Link attribute finishes.
In this embodiment, all LinkSummary message is all carried identical Message_Id with LinkSummaryAck message, because whole message transmitting procedure do not comprise the variation of Message_Id, so do not need extra as the foregoing description one checking mark to be set.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method, be to instruct relevant hardware to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
The embodiment of the invention also provides a kind of device that obtains the link damage information of flow engineering link, and its specific implementation structure specifically can comprise as shown in Figure 4:
Message sink module 41, be used to receive the message of the relevant link damage information of the OA node that carries on the flow engineering link, the link damage information that described OA node is relevant comprises: at least one item in the link damage information between the link damage information of OA node, OA node and the adjacent last node.
Link damage information acquisition module 42, be used for the link damage information that carries according to the received message of described message sink module, and the link damage information of the switching node on the described flow engineering link, obtain the link damage information of described flow engineering link.
Described device can be set in place on second switching node of an end of flow engineering link, last OA node of process is adjacent on described second switching node and the described flow engineering link, in this case, first switching node that is positioned at the other end of flow engineering link sends the message of the link damage information that carries described source switching node to first OA node of described flow engineering link process.
After described first OA node receives described message, in described message, increase the link damage information of described first OA node, and behind the link damage information between first OA node and first switching node, the described message after upgrading is sent to the next OA node of described flow engineering link process.
After described next OA node receives described message, in described message, increase the link damage information of described next OA node, and behind the link damage information between next OA node and first OA node, the described message after upgrading is sent to the next again OA node of described flow engineering link process; The rest may be inferred, and the described message after upgrading is transferred to last OA node of described flow engineering link process.
The above-mentioned message sink module of the described device on described second switching node, receive that described last OA node sends, when carrying the message of the first link damage information, the described first link damage information comprises: the link damage information of first switching node of the described other end that is positioned at flow engineering link and all OA nodes of described flow engineering link process, link damage information between the adjacent OA node, link damage information between described first switching node and the OA node adjacent with described first switching node, described link damage information acquisition module 42 comprises:
Information extraction modules 421 is used for extracting the described first link damage information that the received message of described message sink module is carried;
The link damage information forms module 422, be used for the first link damage information that described information extraction modules is extracted, and the link damage information between the link damage information of described second switching node and described second switching node and described last OA node combines, and forms the link damage information of described flow engineering link.
The embodiment of the invention also provides a kind of device that obtains the link damage information of flow engineering link, and its specific implementation structure specifically can comprise as shown in Figure 5:
Information updating module 51, be used to receive the message that a last node adjacent on the flow engineering link sends, increase the relevant link damage information of this OA node in described message, described link damage information comprises: at least one item in the link damage information between the link damage information of described OA node, described OA node and the described last node;
Transmission of messages module 52, the transmission of messages that is used for described message constructing module is upgraded is to next node adjacent on the flow engineering link.
When described device is arranged on OA node on the flow engineering link:
Described information updating module 51, be used on receiving message that a node sends increase the link damage information of this OA node and this OA node with on link damage information between the node, with the transmission of messages after upgrading to described transmission of messages module;
Described transmission of messages module 52, the transmission of messages that is used for described message constructing module is transmitted is to next node adjacent on the flow engineering link.
The embodiment of the invention also provides a kind of device of link damage information of delivery flow rate engineering link, is set in place on first switching node of an end of flow engineering link, and the specific implementation structure specifically can comprise as shown in Figure 6:
Message constructing module 61 is used to construct the message of the link damage information that carries described first switching node;
Transmission of messages module 62, the transmission of messages that is used for described message constructing module is constructed is to first adjacent with described first switching node on flow engineering link OA node.
The embodiment of the invention also provides a kind of network system, comprises first node, Section Point and the image intensifer OA node between described first node and Section Point,
Described OA node is used for, and receives the message that described first node sends;
Increase the relevant link damage information of this OA node in described message, described link damage information comprises: at least one item in the link damage information between the link damage information of described OA node, described OA node and the described first node,
Described message after described OA node will upgrade sends to described Section Point.
When described first node is when being positioned at first switching node of an end of flow engineering link, described first node is used to construct the message of the link damage information that carries described first node, with described transmission of messages to first adjacent on flow engineering link OA node with described first node;
When described Section Point is when being positioned at second switching node of the other end of flow engineering link, described Section Point is used to receive that last the OA node of process on the described flow engineering link sends, when carrying the message of the first link damage information, with the described first link damage information, and the link damage information between the link damage information of described Section Point and described Section Point and described last OA node combines, form the link damage information of described flow engineering link, the described first link damage information comprises: the link damage information of all OA nodes of described first node and described flow engineering link process, link damage information between the adjacent OA node, link damage information between described first node and the OA node adjacent with described first node.
In sum, the embodiment of the invention is by the LinkSummery message of expansion LMP agreement, can collect the link damage information of the OA node of process on the TE Link between the PXC node in the WDM network effectively, and then obtain the link damage information of whole TE Link.
The embodiment of the invention has been avoided the node of OA node as the control plane management, conformance with standard thought.And the link damage information of OA node has been transferred to the PXC node, no longer needs to carry out separately inundation, has reduced the load of Routing Protocol or other inundation mechanism.
The embodiment of the invention can realize that the signaling of control plane only transmits by the PXC node, without the OA node.Reduce the redundancy of signaling process, thereby reduced the road construction time delay.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (11)
1. a method of obtaining the link damage information of flow engineering link is characterized in that, comprising:
Image intensifer OA node on the flow engineering link receives the message that a last node adjacent on the flow engineering link sends;
Described OA node increases the relevant link damage information of this OA node in described message, described link damage information comprises: at least one item in the link damage information between the link damage information of described OA node, described OA node and the described last node,
Described message after described OA node will upgrade sends to next node adjacent on the described flow engineering link.
2. the method for obtaining the link damage information of flow engineering link according to claim 1, it is characterized in that, when a described last node is when being positioned at first switching node of an end of flow engineering link, image intensifer OA node on the described flow engineering link receives the message that a last node adjacent on the flow engineering link sends, and comprising:
Described OA node receives the message of the link damage information that carries described first switching node of described first switching node transmission.
3. the method for obtaining the link damage information of flow engineering link according to claim 2 is characterized in that, described described OA node increases the relevant link damage information of this OA node in described message, comprising:
Described OA node in described message, increase the link damage information of this OA node and described OA node and described on link damage information between node.
4. according to claim 2 or the 3 described methods of obtaining the link damage information of flow engineering link, it is characterized in that, when described next node is when being positioned at second switching node of the other end of flow engineering link, described message after described described OA node will upgrade sends to the next node of described flow engineering link, comprising:
The message that described OA node will carry the first link damage information sends to described second switching node, and the described first link damage information comprises: the link damage information between the link damage information between the link damage information of all the OA nodes on described first switching node and the flow engineering link, the adjacent OA node, described first switching node and the OA node adjacent with described first switching node;
So that described second switching node combines the link damage information between the link damage information of described first link damage information and described second switching node, described second switching node and the OA node adjacent with described second switching node, form the link damage information of described flow engineering link.
5. the method for obtaining the link damage information of flow engineering link according to claim 1, its feature exists, and described message comprises: the LinkSummety message of the LMP Link Manager Protocol LMP agreement of expansion.
6. a device that obtains the link damage information of flow engineering link is characterized in that, comprising:
The information updating module, be used to receive the message that a last node adjacent on the flow engineering link sends, increase the relevant link damage information of this OA node in described message, described link damage information comprises: at least one item in the link damage information between the link damage information of described OA node, described OA node and the described last node;
The transmission of messages module, the transmission of messages that is used for described message constructing module is upgraded is to next node adjacent on the flow engineering link.
7. the device of the link damage information of a delivery flow rate engineering link is characterized in that, is set in place on first switching node of an end of flow engineering link, and described device specifically comprises:
The message constructing module is used to construct the message of the link damage information that carries described first switching node;
The transmission of messages module, the transmission of messages that is used for described message constructing module is constructed is to first adjacent with described first switching node on flow engineering link OA node.
8. a device that obtains the link damage information of flow engineering link is characterized in that, comprising:
The message sink module, be used to receive the message of the relevant link damage information of the OA node that carries on the flow engineering link, the link damage information that described OA node is relevant comprises: at least one item in the link damage information between the link damage information of OA node, OA node and the adjacent last node;
Link damage information acquisition module, be used for the link damage information that carries according to the received message of described message sink module, and the link damage information of the switching node on the described flow engineering link, obtain the link damage information of described flow engineering link.
9. the device that obtains the link damage information of flow engineering link according to claim 8, it is characterized in that, described device is set in place on second switching node of an end of flow engineering link, last OA node of process is adjacent on described second switching node and the described flow engineering link, and
Last the OA node of process on the described flow engineering link sends when described message sink module receives, when carrying the message of the first link damage information, the described first link damage information comprises: the link damage information of first switching node of the described other end that is positioned at flow engineering link and all OA nodes of described flow engineering link process, link damage information between the adjacent OA node, link damage information between described first switching node and the OA node adjacent with described first switching node, described link damage information acquisition module comprises:
Information extraction modules is used for extracting the described first link damage information that the received message of described message sink module is carried;
The link damage information forms module, be used for the first link damage information that described information extraction modules is extracted, and the link damage information between the link damage information of described second switching node and described second switching node and described last OA node combines, and forms the link damage information of described flow engineering link.
10. a network system comprises first node, Section Point and the image intensifer OA node between described first node and Section Point, it is characterized in that:
Described OA node is used for, and receives the message that described first node sends;
Increase the relevant link damage information of this OA node in described message, described link damage information comprises: at least one item in the link damage information between the link damage information of described OA node, described OA node and the described first node,
Described message after described OA node will upgrade sends to described Section Point.
11. network system according to claim 10 is characterized in that:
When described first node is when being positioned at first switching node of an end of flow engineering link, described first node is used to construct the message of the link damage information that carries described first node, with described transmission of messages to first adjacent on flow engineering link OA node with described first node;
When described Section Point is when being positioned at second switching node of the other end of flow engineering link, described Section Point is used to receive that last the OA node of process on the described flow engineering link sends, when carrying the message of the first link damage information, with the described first link damage information, and the link damage information between the link damage information of described Section Point and described Section Point and described last OA node combines, form the link damage information of described flow engineering link, the described first link damage information comprises: the link damage information of all OA nodes of described first node and described flow engineering link process, link damage information between the adjacent OA node, link damage information between described first node and the OA node adjacent with described first node.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100866234A CN101924599A (en) | 2009-06-12 | 2009-06-12 | Method and device for acquiring damage information of traffic engineering (TE) link |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100866234A CN101924599A (en) | 2009-06-12 | 2009-06-12 | Method and device for acquiring damage information of traffic engineering (TE) link |
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| CN101924599A true CN101924599A (en) | 2010-12-22 |
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| CN2009100866234A Pending CN101924599A (en) | 2009-06-12 | 2009-06-12 | Method and device for acquiring damage information of traffic engineering (TE) link |
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