CN104219068A - Method of channel fault notification and network equipment - Google Patents
Method of channel fault notification and network equipment Download PDFInfo
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- CN104219068A CN104219068A CN201310206666.8A CN201310206666A CN104219068A CN 104219068 A CN104219068 A CN 104219068A CN 201310206666 A CN201310206666 A CN 201310206666A CN 104219068 A CN104219068 A CN 104219068A
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Abstract
An embodiment of the invention provides a method of channel fault notification and network equipment. The method comprises the following steps that the network equipment detects whether a first channel, on which the network equipment is positioned, generates a fault; when it is detected that the first channel generates the fault, fault information is obtained; first fault notification information is transmitted to the other network equipment on the first channel, and the first fault notification information carries the fault information; and the fault information can be directly obtained by the other network equipment on the first channel in real time, so that the accuracy rate and the timeliness for obtaining the fault information of the first channel are improved.
Description
Technical field
The embodiment of the present invention relates to the communication technology, particularly relates to method and the network equipment of a kind of tunnel failure notice.
Background technology
Along with mobile network from 2G to 3G again to the development of Long Term Evolution (Long Term Evolution, referred to as LTE) technology, mobile communications network is by the direction evolution along broadband, packetizing, flattening, and RAN makes the transition towards the direction of IP RAN equally.IP RAN mainly comprises: the access ring forming a base station side by ATN or other types equipment and the convergence ring be made up of the equipment of CX or other types.Usually, the every platform equipment converged on ring can access 10 ~ 20 access rings.Each access ring has the formations such as the ATN of about 10.Converge ring and generally place two high-end CX or other types equipment as gateway, be connected with core net.ATN on access ring or other equipment are called as cell site gateway (Cell Site Gateway, referred to as CSG) or many service transmissions gateway (Multi-Service Transport Gateway, referred to as MSTG).CX on convergence ring or the equipment of other types are called as wireless controller site gateway (RNC Site Gateway, referred to as RSG) or many service convergences gateway (Multi-Service Aggregation Gateway, referred to as MSAG).According to the difference of business, pseudo-line (Pseudo Wire end to end can be disposed between CSG and RSG, referred to as PW) or Layer3 Virtual Private Network (Lay3Virtual Private Network, referred to as L3VPN) carry, L3VPN and PW generally uses Technology of Traffic Engineering (the Multi-Protocol Label Switching Traffic Engineering based on multi protocol label switching protocol, referred to as MPLS TE) tunnel carrys out passing through network, and for the very high requirement that is positioned with of network failure in IP RAN network, needs can the reason of quick obtaining fault when breaking down of business in a network, make business recovery normal to carry out intervention as early as possible.
In prior art, when transmission channel breaks down, with label switched path (Label Switch Path, referred to as LSP) be example, namely be in the nodes break down in LSP or be in the link occurs fault between the node in LSP, the node broken down or link can be called fault point, the reason that the upper node being then in fault point breaks down to network management server report LSP, the failure cause that network management server record is current.
But the head node of LSP of the prior art obtains by the record in network management server the reason that LSP breaks down indirectly, thus causes the accuracy rate obtaining failure cause lower.
Summary of the invention
A kind of method that the embodiment of the present invention provides tunnel failure to notify and the network equipment, for improving the accuracy rate and promptness that obtain fault message.
First aspect, a kind of method that the embodiment of the present invention provides tunnel failure to notify, described method comprises:
Whether the first tunnel that the network equipment detects described network equipment place breaks down;
When the described network equipment detects that described first tunnel breaks down, obtain fault message;
The described network equipment sends Fisrt fault notice message to other network equipments on described first tunnel, and described Fisrt fault notice message carries described fault message.
In the first possible implementation of described first aspect, described first tunnel breaks down and specifically comprises:
The described network equipment breaks down along the upstream node in described first tunnel, or, the link failure that the described network equipment is connected with described upstream node, or, the described network equipment breaks down along the downstream node in described first tunnel, or, the link failure that the described network equipment is connected with described downstream node.
According to the first possible implementation of described first aspect or described first aspect, additionally provide the implementation that the second of described first aspect is possible, in the implementation that the second of described first aspect is possible, the described network equipment sends Fisrt fault notice message to other network equipments on described first tunnel and comprises:
The described network equipment sends described Fisrt fault notice message to the head node in described first tunnel, so that the head node in described first tunnel obtains described fault message.
According to the first possible implementation of described first aspect or described first aspect, additionally provide the third possible implementation of described first aspect, in the third possible implementation of described first aspect, the described network equipment sends Fisrt fault notice message to other network equipments on described first tunnel and comprises:
The described network equipment sends described Fisrt fault notice message to the tail node in described first tunnel, so that the tail node in described first tunnel obtains described fault message.
According to the third possible implementation of described first aspect or the first possible implementation of described first aspect or the possible implementation of the second of described first aspect or described first aspect, additionally provide the 4th kind of possible implementation of described first aspect, in the 4th kind of possible implementation of described first aspect, described Fisrt fault notice message is that PATH TEAR message or reservation tear down RESV TEAR message are removed in path, described fault message is transmitted to carry mistake instruction ERROR_SPEC object by expanding described PATH TEAR message or RESV TEAR message.
According to the third possible implementation of described first aspect or the first possible implementation of described first aspect or the possible implementation of the second of described first aspect or described first aspect, additionally provide the 5th kind of possible implementation of described first aspect, in the 5th kind of possible implementation of described first aspect, described Fisrt fault notice message is that label reclaims Label Withdraw message or label withdraw Label Release message, by expanding described Label Withdraw message or Label Release message transmits described fault message to carry type lengths values TLV.
According to the third possible implementation of described first aspect or the first possible implementation of described first aspect or the possible implementation of the second of described first aspect or described first aspect, additionally provide the 6th kind of possible implementation of described first aspect, in the 6th kind of possible implementation of described first aspect, described failure notice message is that Border Gateway Protocol upgrades BGP Update message, and the BGP extended community attribute of being carried the described BGP_Update message of MP_UNREACH_NLRI by expansion transmits described fault message.
According to described first aspect or the first possible implementation of described first aspect or the possible implementation of the second of described first aspect or the 5th kind of possible implementation of the third possible implementation of described first aspect or the 4th kind of possible implementation of described first aspect or described first aspect or the 6th kind of possible implementation of described first aspect, additionally provide the 7th kind of possible implementation of described first aspect, in the 7th kind of possible implementation of described first aspect, described method also comprises:
After the head node in described first tunnel receives described Fisrt fault notice message, there is if determine the second tunnel be associated with described first tunnel, then the head node in described first tunnel sends the second failure notice message to the head node on described second tunnel, so that the head node in described second tunnel obtains described fault message;
After the tail node in described first tunnel receives described Fisrt fault notice message, there is if determine described second tunnel be associated with described first tunnel, then the tail node in described first tunnel sends the second failure notice message to described second tunnel, so that the tail node in described first tunnel obtains described fault message;
Wherein, described second failure notice message carries described fault message.
According to the 7th kind of possible implementation of described first aspect, additionally provide the 8th kind of possible implementation of described first aspect, in the 8th kind of possible implementation of described first aspect, described second failure notice message is Label Withdraw message or Label Release message, by expanding described Label Withdraw message or Label Release message transmits described fault message to carry type lengths values TLV.
According to the 7th kind of possible implementation of described first aspect, additionally provide the 9th kind of possible implementation of described first aspect, in the 9th kind of possible implementation of described first aspect, described second failure notice message is tag distribution protocol notice LDP Notification message.
According to the 7th kind of possible implementation of described first aspect, additionally provide the tenth kind of possible implementation of described first aspect, in the tenth kind of possible implementation of described first aspect, described second failure notice message is BGP Update message, and the BGP extended community attribute of being carried the described BGP_Update message of MP_UNREACH_NLRI by expansion transmits described fault message.
Second aspect, the embodiment of the present invention provides a kind of network equipment, and the described network equipment comprises:
Whether detecting unit, break down for the first tunnel detecting described network equipment place;
Acquiring unit, during for detecting that described first tunnel breaks down at described detecting unit, obtains fault message;
Transmitting element, for sending Fisrt fault notice message to other network equipments on described first tunnel, described Fisrt fault notice message carries described fault message.
In the first possible implementation of described second aspect, described detecting unit detects that described first tunnel breaks down and comprises:
Detect that the described network equipment breaks down along the upstream node in described first tunnel, or, the link failure that the described network equipment is connected with described upstream node detected, or, detect that the described network equipment breaks down along the downstream node in described first tunnel, or, the link failure that the described network equipment is connected with described downstream node detected.
According to the first possible implementation of described second aspect or described second aspect, additionally provide the implementation that the second of described second aspect is possible, in the implementation that the second of described second aspect is possible, described transmitting element sends described Fisrt fault notice message to other network equipments on described first tunnel and comprises:
Head node to described first tunnel sends described Fisrt fault notice message, so that the head node in described first tunnel obtains described fault message.
According to the first possible implementation of described second aspect or described second aspect, additionally provide the implementation that the second of described second aspect is possible, in the third possible implementation of described second aspect, described transmitting element sends described Fisrt fault notice message to other network equipments on described first tunnel and comprises:
Tail node to described first tunnel sends described Fisrt fault notice message, so that the tail node in described first tunnel obtains described fault message.
The method of the tunnel failure notice that the embodiment of the present invention provides and the network equipment, when detecting that the first tunnel breaks down by the network equipment, obtain fault message, then Fisrt fault notice message is sent to other network equipments on the first tunnel, Fisrt fault notice message carries fault message, all directly and get fault message in real time, thus accuracy rate and the promptness of the fault message in acquisition first tunnel can be improve to make other network equipment in the first tunnel.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of the embodiment of the method one of tunnel failure of the present invention notice;
Fig. 2 is the flow chart of the embodiment of the method two of tunnel failure of the present invention notice;
Fig. 3 is the flow chart of the embodiment of the method three of tunnel failure of the present invention notice;
Fig. 4 is the flow chart of the embodiment of the method four of tunnel failure of the present invention notice;
Fig. 5 is the flow chart of the embodiment of the method five of tunnel failure of the present invention notice;
Fig. 6 is the structural representation of network equipment embodiment one of the present invention;
Fig. 7 is the structural representation of network equipment embodiment two of the present invention.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the flow chart of the embodiment of the method one of tunnel failure of the present invention notice, and as shown in Figure 1, the method for the present embodiment can comprise:
Whether the first tunnel that 101, the network equipment detects this network equipment place breaks down.
In the present embodiment, whether the first tunnel that the network equipment can detect this network equipment place breaks down, wherein, this first tunnel is this network equipment by information transmission to the passage of other network equipment, therefore, in order to guarantee information energy normal transmission is to other network equipment, whether the first tunnel that this network equipment can detect place breaks down, such as: whether the network equipment can adopt first tunnel of the fault detection approach of prior art to place to break down and detect, and the embodiment of the present invention does not repeat them here.Or, the network equipment can receive the failure notice message that other network equipment sends to this network equipment, thus this network equipment can according to whether receiving the first tunnel fails that failure notice message detects place, if receive, then can determine the first tunnel fails, if do not receive, then can determine that the first tunnel does not break down.
102, when the network equipment detects that the first tunnel breaks down, fault message is obtained.
In the present embodiment, when the network equipment detects the first tunnel fails according to 101, the network equipment can obtain fault message, and wherein, this fault message can comprise break down address information a little and/or fault reason information.
103, the network equipment sends Fisrt fault notice message to other network equipments on the first tunnel, and Fisrt fault notice message carries fault message.
In the present embodiment, after the network equipment gets fault message, fault message is carried in Fisrt fault notice message by this network equipment, then Fisrt fault notice message is sent to other network equipment on first tunnel at place, such as: the network equipment can directly send Fisrt fault notice message to other network equipment on the first tunnel, or, the network equipment that the network equipment can close on this network equipment on the first tunnel sends Fisrt fault notice message, the network equipment closed on this network equipment receives this Fisrt fault notice message and propagates one by one, namely other network equipment on the first tunnel is forwarded to one by one, until head node on the first tunnel or tail node, to make other network equipments on the first tunnel all can directly and get fault message in real time, thus make the fault message accurate positioning in the first tunnel with in time.
The method of the tunnel failure notice that the embodiment of the present invention one provides, when detecting that the first tunnel breaks down by the network equipment, obtain fault message, then Fisrt fault notice message is sent to other network equipments on the first tunnel, Fisrt fault notice message carries fault message, all directly and get fault message in real time, thus accuracy rate and the promptness of the fault message in acquisition first tunnel can be improve to make other network equipment in the first tunnel.
Adopt specific embodiment below, the technical scheme of embodiment of the method shown in Fig. 1 is described in detail.
Fig. 2 is the flow chart of the embodiment of the method two of tunnel failure of the present invention notice, and as shown in Figure 2, the method for the present embodiment can comprise:
Whether the first tunnel that 201, the network equipment detects this network equipment place breaks down.
In the present embodiment, in the embodiment of the method that shown in the specific implementation process of 201 and Fig. 1, tunnel failure notifies, the specific implementation process of 101 is similar, and detailed process can with reference to the record in 101, and the embodiment of the present invention does not repeat them here.
202, the network equipment detects that this network equipment breaks down along the downstream node in the first tunnel, or the link failure that the network equipment is connected with downstream node, obtains fault message.
In the present embodiment, when the downstream node in the first tunnel breaks down, namely the downstream network device being positioned at this network equipment in the first tunnel breaks down, then the network equipment can detect that this network equipment breaks down along the downstream node in the first tunnel, such as: when the downstream node in the first tunnel broken down is a downstream network device adjacent with this network equipment, the downstream node that then network equipment can directly detect this first tunnel breaks down, and generate Fisrt fault notice message after obtaining fault message, then this Fisrt fault notice message is sent to a upstream network device adjacent with this network equipment, or, when the downstream node in the first tunnel broken down is not a downstream network device adjacent with this network equipment, then the network equipment can receive the Fisrt fault notice message sent with the downstream node of this network equipment, from Fisrt fault notice message, obtain fault message, then Fisrt fault notice message is sent to a upstream network device adjacent with this network equipment.It should be noted that, fault message comprises address information and/or the fault reason information of the downstream node broken down herein.
When the link failure that the network equipment is connected with downstream node, the i.e. link failure that is connected with the downstream network device being positioned at this network equipment in the first tunnel of the network equipment, then the network equipment can detect the link failure of this network equipment and downstream network device, such as: the link broken down be the network equipment and and the adjacent downstream network device of this network equipment between link, then the network equipment can detect this link failure, and generate Fisrt fault notice message after obtaining fault message, then this Fisrt fault notice message is sent to a upstream network device adjacent with this network equipment, or, when the link that the link the broken down downstream node that is the network equipment is connected with another downstream node, then the network equipment can receive the Fisrt fault notice message sent with the downstream node of this network equipment, from Fisrt fault notice message, obtain fault message, then Fisrt fault notice message is sent to a upstream network device adjacent with this network equipment.It should be noted that, fault message comprises address information and/or the fault reason information of the link broken down herein.
203, the network equipment sends Fisrt fault notice message to the head node in the first tunnel, so that the head node in the first tunnel obtains fault message, Fisrt fault notice message carries fault message.
In the present embodiment, the network equipment can obtain fault message by direct-detection, or the Fisrt fault notice message that can send by receiving the downstream node adjacent with this network equipment obtains fault message, after the network equipment gets this fault message, Fisrt fault notice message is sent to the upstream node adjacent with this network equipment by the network equipment, the upstream node adjacent with this network equipment obtains fault message after receiving this Fisrt fault notice message, then Fisrt fault notice message is sent to the upstream node adjacent with it, by that analogy, Fisrt fault notice message is propagated transmission one by one, until Fisrt fault notice message to be sent to the head node in the first tunnel, then the head node in the first tunnel obtains fault message according to Fisrt fault notification message, to make the upstream node at the place of breaking down all can directly and get fault message in real time, thus make the fault message accurate positioning in the first tunnel with in time.
Below the embody rule scene of the embodiment of the present invention is illustrated:
In the implementation that the first is feasible, when the first tunnel is RSVP (the Resource ReSerVation Protocol-Traffic Engineering that MPLS TE uses based on Traffic Engineering extensions, referred to as RSVP-TE) signaling set up lsp tunnel time, the network equipment detects the link occurs fault that the downstream node of the lsp tunnel at this network equipment place breaks down or this network equipment is connected with downstream node, then this network equipment obtains fault message, and remove the status block of this network equipment, then the upstream node to this network equipment sends reservation tear down (RESV TEAR) message, this RESV TEAR message carries fault message, fault message comprises: the downstream node broken down or the address information of link, with the coding of failure cause, after this upstream node receives this RESV TEAR message, remove the status block of this upstream node, and obtain fault message, then RESV TEAR message is sent to the upstream node adjacent with this upstream node, by that analogy, RESV TEAR message is propagated transmission one by one, and remove the state of corresponding upstream node one by one, until RESV TEAR message to be sent to the head node in the first tunnel, then the head node in the first tunnel obtains fault message according to RESV TEAR message, to make the upstream node at the place of breaking down all can directly and get fault message in real time, thus make the fault message accurate positioning in the first tunnel with in time, the head node in last first tunnel can by this fault information reporting to management server.
It should be noted that, RESV TEAR message in the present embodiment is the RESV TEAR message after expansion, particularly, mistake instruction (ERROR_SPEC) object can be carried by expansion RESV TEAR message and carry out transmission fault information, namely ERROR_SPEC object can be used in RSVP-TE so that fault message to be described, the RESV TEAR message of the present embodiment can comprise this ERROR_SPEC object; Or default new object can be used in RSVP-TE so that fault message to be described, the RESV TEAR message of the present embodiment can comprise this new object preset.
In the implementation that the second is feasible, when the first tunnel is that MPLS uses tag distribution protocol (Label Distribution Protocol, referred to as LDP) signaling set up lsp tunnel time, the network equipment detects the link occurs fault that the downstream node of the lsp tunnel at this network equipment place breaks down or this network equipment is connected with downstream node, then this network equipment obtains fault message, and remove the status block of this network equipment, then the upstream node to this network equipment sends label recovery (Label Withdraw) message, this Label Withdraw message carries fault message, fault message comprises: the downstream node broken down or the address information of link, with the coding of failure cause, after this upstream node receives this Label Withdraw message, remove the status block of this upstream node, and obtain fault message, then Label Withdraw message is sent to the upstream node adjacent with this upstream node, by that analogy, Label Withdraw message is propagated transmission one by one, and remove the state of corresponding upstream node one by one, until Label Withdraw message to be sent to the head node in the first tunnel, then the head node in the first tunnel obtains fault message according to Label Withdraw message, to make the upstream node at the place of breaking down all can directly and get fault message in real time, thus make the fault message accurate positioning in the first tunnel with in time, the head node in last first tunnel can by this fault information reporting to management server.
It should be noted that, Label Withdraw message in the present embodiment is the Label Withdraw message after expansion, particularly, can by expansion Label Withdraw message to carry type lengths values (Type-Length-Value, referred to as TLV) carry out transmission fault information, namely the TLV of new definition can be used so that fault message to be described, the Label Withdraw message of the present embodiment can directly comprise this TLV.
In the implementation that the third is feasible, when the first tunnel is for adopting MP-BGP (Multi Protocol Border Gateway Protocol, referred to as MP-BGP) the multistage PW that sets up or hierarchical vp N time, the network equipment detects the multistage PW at this network equipment place or the link occurs fault that downstream node breaks down or this network equipment is connected with downstream node of hierarchical vp N, then this network equipment obtains fault message, upstream node to this network equipment sends bgp update message, this bgp update message carries fault message, fault message comprises: the downstream node broken down or the address information of link, with the coding of failure cause, after this upstream node receives this bgp update message, obtain fault message, then bgp update message is sent to the upstream node adjacent with this upstream node, by that analogy, bgp update message is propagated transmission one by one, until bgp update message to be sent to the head node in the first tunnel, then the head node in the first tunnel obtains fault message according to bgp update message, to make the upstream node at the place of breaking down all can directly and get fault message in real time, thus make the fault message accurate positioning and in time in the first tunnel.
It should be noted that, bgp update message in the present embodiment is the bgp update message after expansion, and this bgp update message is the bgp update message comprising MP_UNREACH_NLRI, particularly, transmission fault information can be carried out by the extended community attribute expanding BGP.
The method of the tunnel failure notice that the embodiment of the present invention two provides, detect that this network equipment breaks down along the downstream node in the first tunnel by the network equipment, or, the link failure that the network equipment is connected with downstream node, obtain fault message, then the head node to the first tunnel sends Fisrt fault notice message, so that the head node in the first tunnel obtains fault message, Fisrt fault notice message carries fault message; All directly and get fault message in real time, thus accuracy rate and the promptness of the fault message in acquisition first tunnel can be improve to make the upstream node at the place of breaking down in the first tunnel.
Fig. 3 is the flow chart of the embodiment of the method three of tunnel failure of the present invention notice, and as shown in Figure 3, the method for the present embodiment can comprise:
Whether the first tunnel that 301, the network equipment detects this network equipment place breaks down.
In the present embodiment, in the embodiment of the method that shown in the specific implementation process of 301 and Fig. 1, tunnel failure notifies, the specific implementation process of 101 is similar, and detailed process can with reference to the record in 101, and the embodiment of the present invention does not repeat them here.
302, the network equipment detects that this network equipment breaks down along the upstream node in the first tunnel, or, the link failure that the network equipment is connected with upstream node.
In the present embodiment, when the upstream node in the first tunnel breaks down, namely the upstream network device being positioned at this network equipment in the first tunnel breaks down, then the network equipment can detect that this network equipment breaks down along the upstream node in the first tunnel, such as: when the upstream node in the first tunnel broken down is a upstream network device adjacent with this network equipment, the upstream node that then network equipment can directly detect this first tunnel breaks down, and generate Fisrt fault notice message after obtaining fault message, then this Fisrt fault notice message is sent to a downstream network device adjacent with this network equipment, or, when the upstream node in the first tunnel broken down is not a upstream network device adjacent with this network equipment, then the network equipment can receive the Fisrt fault notice message sent with the upstream node of this network equipment, from Fisrt fault notice message, obtain fault message, then Fisrt fault notice message is sent to a downstream network device adjacent with this network equipment.It should be noted that, fault message comprises address information and/or the fault reason information of the upstream node broken down herein.
When the link failure that the network equipment is connected with upstream node, the i.e. link failure that is connected with the upstream network device being positioned at this network equipment in the first tunnel of the network equipment, then the network equipment can detect the link failure of this network equipment and upstream network device, such as: the link broken down be the network equipment and and the adjacent upstream network device of this network equipment between link, then the network equipment can detect this link failure, and generate Fisrt fault notice message after obtaining fault message, then this Fisrt fault notice message is sent to a downstream network device adjacent with this network equipment, or, when the link that the link the broken down upstream node that is the network equipment is connected with another upstream node, then the network equipment can receive the Fisrt fault notice message sent with the upstream node of this network equipment, from Fisrt fault notice message, obtain fault message, then Fisrt fault notice message is sent to a downstream network device adjacent with this network equipment.It should be noted that, fault message comprises address information and/or the fault reason information of the link broken down herein.
303, the network equipment sends Fisrt fault notice message to the tail node in the first tunnel, so that the tail node in the first tunnel obtains described fault message, Fisrt fault notice message carries fault message.
In the present embodiment, the network equipment can obtain fault message by direct-detection, or the Fisrt fault notice message that can send by receiving the upstream node adjacent with this network equipment obtains fault message, after the network equipment gets this fault message, Fisrt fault notice message is sent to the downstream node adjacent with this network equipment by the network equipment, the downstream node adjacent with this network equipment obtains fault message after receiving this Fisrt fault notice message, then Fisrt fault notice message is sent to the downstream node adjacent with it, by that analogy, Fisrt fault notice message is propagated transmission one by one, until Fisrt fault notice message to be sent to the tail node in the first tunnel, then the tail node in the first tunnel obtains fault message according to Fisrt fault notification message, to make the downstream node at the place of breaking down all can directly and get fault message in real time, thus make the fault message accurate positioning in the first tunnel with in time.
Below the embody rule scene of the embodiment of the present invention is illustrated:
In the implementation that the first is feasible, when the first tunnel is the lsp tunnel of MPLS TE use RSVP-TE signaling foundation, the network equipment detects the link occurs fault that the upstream node of the lsp tunnel at this network equipment place breaks down or this network equipment is connected with upstream node, then this network equipment obtains fault message, and remove the status block of this network equipment, then the downstream node transmit path to this network equipment removes (PATH TEAR) message, this PATH TEAR message carries fault message, fault message comprises: the upstream node broken down or the address information of link, with the coding of failure cause, after this downstream node receives this PATH TEAR message, remove the status block of this downstream node, and obtain fault message, then PATH TEAR message is sent to the downstream node adjacent with this downstream node, by that analogy, PATH TEAR message is propagated transmission one by one, and remove the state of corresponding downstream node one by one, until PATH TEAR message to be sent to the tail node in the first tunnel, then the tail node in the first tunnel obtains fault message according to PATH TEAR message, to make the downstream node at the place of breaking down all can directly and get fault message in real time, thus make the fault message accurate positioning in the first tunnel with in time, the tail node in last first tunnel can by this fault information reporting to management server.It should be noted that, PATH TEAR message in the present embodiment is the PATH TEAR message after expansion, particularly, ERROR_SPEC object can be carried by expansion PATH TEAR message and carry out transmission fault information, namely ERROR_SPEC object can be used in RSVP-TE so that fault message to be described, the PATH TEAR message of the present embodiment can comprise this ERROR_SPEC object; Or default new object can be used in RSVP-TE so that fault message to be described, the PATH TEAR message of the present embodiment can comprise this new object preset.
In the implementation that the second is feasible, when the first tunnel is the lsp tunnel of MPLS use LDP signaling foundation, the network equipment detects the link occurs fault that the upstream node of the lsp tunnel at this network equipment place breaks down or this network equipment is connected with upstream node, then this network equipment obtains fault message, and remove the status block of this network equipment, then the downstream node to this network equipment sends label withdraw (Label Release) message, this Label Release message carries fault message, fault message comprises: the upstream node broken down or the address information of link, with the coding of failure cause, after this downstream node receives this Label Withdraw message, remove the status block of this downstream node, and obtain fault message, then Label Release message is sent to the downstream node adjacent with this downstream node, by that analogy, Label Release message is propagated transmission one by one, and remove the state of corresponding downstream node one by one, until Label Release message to be sent to the tail node in the first tunnel, then the tail node in the first tunnel obtains fault message according to Label Release message, to make the downstream node at the place of breaking down all can directly and get fault message in real time, thus make the fault message accurate positioning in the first tunnel with in time, the tail node in last first tunnel can by this fault information reporting to management server.
It should be noted that, Label Release message in the present embodiment is the Label Release message after expansion, particularly, transmission fault information can be carried out to carry TLV by expansion Label Release message, namely the TLV of new definition can be used so that fault message to be described, the Label Release message of the present embodiment can directly comprise this TLV.
In the implementation that the third is feasible, when the first tunnel is the multistage PW or hierarchical vp N that adopt MP-BGP to set up, the network equipment detects the multistage PW at this network equipment place or the link occurs fault that upstream node breaks down or this network equipment is connected with upstream node of hierarchical vp N, then this network equipment obtains fault message, downstream node to this network equipment sends bgp update message, this bgp update message carries fault message, fault message comprises: the upstream node broken down or the address information of link, and the coding of failure cause; After this downstream node receives this bgp update message, obtain fault message, then bgp update message is sent to the downstream node adjacent with this downstream node, by that analogy, bgp update message is propagated transmission one by one, until bgp update message to be sent to the tail node in the first tunnel, then the tail node in the first tunnel obtains fault message according to bgp update message, to make the downstream node at the place of breaking down all can directly and get fault message in real time, thus make the fault message accurate positioning and in time in the first tunnel.
It should be noted that, bgp update message in the present embodiment is the bgp update message after expansion, and this bgp update message is the bgp update message comprising MP_UNREACH_NLRI, particularly, transmission fault information can be carried out by the extended community attribute expanding BGP.
The method of the tunnel failure notice that the embodiment of the present invention three provides, detect that this network equipment breaks down along the upstream node in the first tunnel by the network equipment, or, the link failure that the network equipment is connected with upstream node, then the tail node to the first tunnel sends Fisrt fault notice message, so that the tail node in the first tunnel obtains described fault message, Fisrt fault notice message carries fault message; All directly and get fault message in real time, thus accuracy rate and the promptness of the fault message in acquisition first tunnel can be improve to make the downstream node at the place of breaking down in the first tunnel.
It should be noted that, the method of the tunnel failure notice shown in the embodiment of the present invention two and the embodiment of the present invention three can in conjunction with execution, unlike, the network equipment in the embodiment of the present invention two is the upstream node at the first tunnel fails place, and the network equipment in the embodiment of the present invention three is the downstream node at the first tunnel fails place, thus the node that can ensure all normal work on the first tunnel all directly and obtain fault message in real time, can improve accuracy rate and the promptness of the fault message in acquisition first tunnel.
Fig. 4 is the flow chart of embodiment of the method four of tunnel failure of the present invention notice, as shown in Figure 4, further, on the basis of the embodiment of the method that the present embodiment notifies at tunnel failure shown in Fig. 1 or Fig. 2, can also comprise:
401, the head node in the first tunnel receives Fisrt fault notice message.
In the present embodiment, when the network equipment detects that this network equipment breaks down along the downstream node in the first tunnel, or, after the link failure that the network equipment is connected with downstream node, obtain fault message, head node to the first tunnel sends Fisrt fault notice message, and correspondingly, the head node in the first tunnel receives this first tunnel notice message.
402, the head node in the first tunnel determines whether to have the second tunnel be associated with the first tunnel, if not, then performs 404; If so, then 403 are performed.
403, the head node in the first tunnel sends the second failure notice message to the head node on the second tunnel, so that the head node in the second tunnel obtains fault message, the second failure notice message carries fault message.
In the present embodiment, due to the first tunnel fails, can determine after so the head node in the first tunnel obtains the fault message in the first tunnel which the second tunnel this fault message can also affect, this second tunnel is the tunnel except the first tunnel, therefore, the head node in the first tunnel can determine whether to have second tunnel relevant to the first tunnel, if have the second tunnel be associated with the first tunnel, then illustrate that the fault in the first tunnel can have influence on the second tunnel equally, thus cause the second tunnel fails, so further, also need each node fault message in the first tunnel being advertised to the second tunnel.
In the present embodiment, when the head node in the first tunnel determines the second tunnel having and be associated with the first tunnel, fault message in the head node Fisrt fault notice message in the first tunnel is mapped in the fault message sent by the second tunnel, form the second failure notice message, this second failure notice message carries this fault message, then the second failure notice message is sent to the head node in the second tunnel by the head node in the first tunnel, such as: the second failure notice message sends to the head node in this first tunnel along the adjacent upstream node in the second tunnel by the head node in the first tunnel, fault message is obtained after the upstream node in the second tunnel adjacent with the head node in the first tunnel receives this second failure notice message, then the second failure notice message is sent to the upstream node adjacent with it, by that analogy, second failure notice message is propagated transmission one by one, until the second failure notice message to be sent to the head node in the second tunnel, then the head node in the second tunnel obtains fault message according to the second fault notification message, each node in the second tunnel be associated to make the first tunnel broken down all can directly and get fault message in real time, thus make the second tunnel can accurately and in time localizing faults information, achieve fault location end to end simultaneously.
404, flow process terminates.
If do not have the second tunnel be associated with the first tunnel, then illustrate that the fault in the first tunnel can not have influence on other tunnel, then flow process terminates.
Below the embody rule scene of the embodiment of the present invention is illustrated:
In the implementation that the first is feasible, when the second tunnel is the multistage PW adopting LDP signaling to set up, after the head node in the first tunnel receives Fisrt fault notice message, there is if determine the second tunnel be associated with the first tunnel, then the head node in the first tunnel obtains the fault message in Fisrt fault notice message, and this fault message is mapped in LDP Notification message or Label Withdraw message, then the upstream node to second tunnel adjacent with the head node in the first tunnel sends this LDP Notification message or Label Withdraw message, after the upstream node in this second tunnel receives this LDP Notification message or Label Withdraw message, obtain fault message, then LDP Notification message or Label Withdraw message is sent to the upstream node adjacent with the upstream node in this second tunnel, by that analogy, LDP Notification message or Label Withdraw message are propagated transmission one by one, until LDP Notification message or Label Withdraw message to be sent to the head node in the second tunnel, then the head node in the second tunnel obtains fault message according to LDP Notification message or Label Withdraw message, to realize fault location end to end.
In the implementation that the second is feasible, when the second tunnel is the multistage PW or hierarchical vp N that adopt MP-BGP signaling to set up, after the head node in the first tunnel receives Fisrt fault notice message, there is if determine the second tunnel be associated with the first tunnel, then the head node in the first tunnel obtains the fault message in Fisrt fault notice message, and this fault message is mapped in bgp update message, the upstream node then to second tunnel adjacent with the head node in the first tunnel sends this bgp update message; After the upstream node in this second tunnel receives this bgp update message, obtain fault message, then bgp update message is sent to the upstream node adjacent with the upstream node in this second tunnel, by that analogy, bgp update message is propagated transmission one by one, until bgp update message to be sent to the head node in the second tunnel, then the head node in the second tunnel obtains fault message, to realize fault location end to end according to bgp update message.It should be noted that, the bgp update message in the present embodiment is the bgp update message after expansion, can carry out transmission fault information by expansion BGP extended community attribute.
The method of the tunnel failure notice that the embodiment of the present invention four provides, further, after receiving Fisrt fault notice message by the head node in the first tunnel, there is if determine the second tunnel be associated with the first tunnel, then the head node in the first tunnel sends the second failure notice message to the head node on the second tunnel, so that the head node in the second tunnel obtains fault message; Each node in the second tunnel be associated to make the first tunnel broken down all can directly and get fault message in real time, thus make the second tunnel can accurately and in time localizing faults information, achieves fault location end to end simultaneously.
Fig. 5 is the flow chart of embodiment of the method five of tunnel failure of the present invention notice, as shown in Figure 5, further, on the basis of the embodiment of the method that the present embodiment notifies at tunnel failure shown in Fig. 1 or Fig. 3, can also comprise:
501, the tail node in the first tunnel receives Fisrt fault notice message.
In the present embodiment, when the network equipment detects that this network equipment breaks down along the upstream node in described first tunnel, or, after the link failure that the network equipment is connected with upstream node, obtain fault message, tail node to the first tunnel sends Fisrt fault notice message, and correspondingly, the tail node in the first tunnel receives this first tunnel notice message.
502, the tail node in the first tunnel determines whether to have the second tunnel be associated with the first tunnel, if not, then performs 504; If so, then 503 are performed.
503, the tail node in the first tunnel sends the second failure notice message to the tail node on the second tunnel, so that the tail node in the second tunnel obtains fault message, the second failure notice message carries fault message.
In the present embodiment, due to the first tunnel fails, can determine after so the tail node in the first tunnel obtains the fault message in the first tunnel which the second tunnel this fault message can also affect, this second tunnel is the tunnel except the first tunnel, therefore, the tail node in the first tunnel can determine whether to have second tunnel relevant to the first tunnel, if have the second tunnel be associated with the first tunnel, then illustrate that the fault in the first tunnel can have influence on the second tunnel equally, thus cause the second tunnel fails, so further, also need each node fault message in the first tunnel being advertised to the second tunnel.
In the present embodiment, when the tail node in the first tunnel determines the second tunnel having and be associated with the first tunnel, fault message in the tail node Fisrt fault notice message in the first tunnel is mapped in the fault message sent by the second tunnel, form the second failure notice message, this second failure notice message carries this fault message, then the second failure notice message is sent to the tail node in the second tunnel by the tail node in the first tunnel, such as: the second failure notice message sends to the tail node in this first tunnel along the adjacent downstream node in the second tunnel by the tail node in the first tunnel, fault message is obtained after the downstream node in the second tunnel adjacent with the tail node in the first tunnel receives this second failure notice message, then the second failure notice message is sent to the downstream node adjacent with it, by that analogy, second failure notice message is propagated transmission one by one, until the second failure notice message to be sent to the tail node in the second tunnel, then the tail node in the second tunnel obtains fault message according to the second fault notification message, each node in the second tunnel be associated to make the first tunnel broken down all can directly and get fault message in real time, thus make the second tunnel can accurately and in time localizing faults information, achieve fault location end to end simultaneously.
504, flow process terminates.
If do not have the second tunnel be associated with the first tunnel, then illustrate that the fault in the first tunnel can not have influence on other tunnel, then flow process terminates.
Below the embody rule scene of the embodiment of the present invention is illustrated:
In the implementation that the first is feasible, when the second tunnel is the multistage PW adopting LDP signaling to set up, after the tail node in the first tunnel receives Fisrt fault notice message, there is if determine the second tunnel be associated with the first tunnel, then the tail node in the first tunnel obtains the fault message in Fisrt fault notice message, and this fault message is mapped in LDP Notification message or Label Release message, then the downstream node to second tunnel adjacent with the tail node in the first tunnel sends this LDP Notification message or Label Release message, after the downstream node in this second tunnel receives this LDP Notification message or Label Release message, obtain fault message, then LDP Notification message or Label Release message is sent to the downstream node adjacent with the downstream node in this second tunnel, by that analogy, LDP Notification message or Label Release message are propagated transmission one by one, until LDP Notification message or Label Release message to be sent to the tail node in the second tunnel, then the tail node in the second tunnel obtains fault message according to LDP Notification message or Label Release message, to realize fault location end to end.
In the implementation that the second is feasible, when the second tunnel is the multistage PW or hierarchical vp N that adopt MP-BGP signaling to set up, after the tail node in the first tunnel receives Fisrt fault notice message, there is if determine the second tunnel be associated with the first tunnel, then the tail node in the first tunnel obtains the fault message in Fisrt fault notice message, and this fault message is mapped in bgp update message, the downstream node then to second tunnel adjacent with the tail node in the first tunnel sends this bgp update message; After the downstream node in this second tunnel receives this bgp update message, obtain fault message, then bgp update message is sent to the downstream node adjacent with the downstream node in this second tunnel, by that analogy, bgp update message is propagated transmission one by one, until bgp update message to be sent to the tail node in the second tunnel, then the tail node in the second tunnel obtains fault message, to realize fault location end to end according to bgp update message.It should be noted that, the bgp update message in the present embodiment is the bgp update message after expansion, can carry out transmission fault information by expansion BGP extended community attribute.
The method of the tunnel failure notice that the embodiment of the present invention five provides, further, after receiving Fisrt fault notice message by the tail node in the first tunnel, there is if determine the second tunnel be associated with the first tunnel, then the tail node in the first tunnel sends the second failure notice message to the tail node on the second tunnel, so that the tail node in the second tunnel obtains fault message; Each node in the second tunnel be associated to make the first tunnel broken down all can directly and get fault message in real time, thus make the second tunnel can accurately and in time localizing faults information, achieves fault location end to end simultaneously.
It should be noted that, the method of the tunnel failure notice shown in the embodiment of the present invention four and the embodiment of the present invention five can in conjunction with execution, thus each node in all second tunnels that the first tunnel broken down can be made to be associated all can directly and get fault message in real time, thus make the second tunnel can accurately and in time localizing faults information, achieve fault location end to end simultaneously.
Fig. 6 is the structural representation of network equipment embodiment one of the present invention, as shown in Figure 6, embodiments provide a kind of network equipment 10, the described network equipment 10 can be the network equipment of preceding method embodiment part, the network equipment 10 of the present embodiment can comprise: detecting unit 11, acquiring unit 12 and transmitting element 13, wherein, whether detecting unit 11 breaks down for first tunnel at Sampling network equipment 10 place; When acquiring unit 12 is for detecting that described first tunnel breaks down at detecting unit 11, obtain fault message; Transmitting element 13 is for sending Fisrt fault notice message to other network equipments on described first tunnel, and described Fisrt fault notice message carries described fault message.
Further, detecting unit 11 detects that described first tunnel breaks down and comprises: detect that the network equipment 10 breaks down along the upstream node in described first tunnel, or, the link failure that the network equipment 10 is connected with described upstream node detected, or, detect that the network equipment 10 breaks down along the downstream node in described first tunnel, or, the link failure that the network equipment 10 is connected with described downstream node detected.
Further, in the implementation that the first is feasible, transmitting element 13 sends described Fisrt fault notice message to other network equipments on described first tunnel and comprises: the head node to described first tunnel sends described Fisrt fault notice message, so that the head node in described first tunnel obtains described fault message.
In the implementation that the second is feasible, transmitting element 13 sends described Fisrt fault notice message to other network equipments on described first tunnel and comprises: the tail node to described first tunnel sends described Fisrt fault notice message, so that the tail node in described first tunnel obtains described fault message.
Alternatively, in the implementation that the first is feasible, described Fisrt fault notice message is that PATH TEAR message or reservation tear down RESV TEAR message are removed in path, by expanding described PATH TEAR message or RESV TEAR message transmits described fault message to carry ERROR_SPEC object.
In the implementation that the second is feasible, described Fisrt fault notice message is that label reclaims Label Withdraw message or label withdraw Label Release message, by expanding described Label Withdraw message or Label Release message transmits described fault message to carry type lengths values TLV.
In the implementation that the third is feasible, described failure notice message is that Border Gateway Protocol upgrades BGP Update message, and the BGP extended community attribute of being carried the described BGP_Update message of MP_UNREACH_NLRI by expansion transmits described fault message.
The network equipment 10 of the present embodiment, may be used for the technical scheme shown in method above-described embodiment performing tunnel failure of the present invention notice, it realizes principle and technique effect is similar, see the relevant record in above-described embodiment, can repeat no more in detail herein.
Fig. 7 is the structural representation of network equipment embodiment two of the present invention, as shown in Figure 7, the embodiment of the present invention additionally provides a kind of network equipment 20, described first network equipment 20 can be the network equipment of preceding method embodiment part, the network equipment 20 of the present embodiment can comprise: memory 21 and transmitter 22, and the processor 23 be connected with memory 21 and transmitter 22 respectively, and memory 21 is for storing batch processing code, the following operation of program execution that processor 23 stores for calling memory 21:
Whether first tunnel at Sampling network equipment 20 place breaks down;
When detecting that described first tunnel breaks down, obtain fault message;
Control transmitter 22 and send Fisrt fault notice message to other network equipments on described first tunnel, described Fisrt fault notice message carries described fault message.
Further, detect the first tunnel to break down and comprise:
Sampling network equipment 20 breaks down along the upstream node in described first tunnel, or, the link failure that Sampling network equipment 20 is connected with described upstream node, or, Sampling network equipment 20 breaks down along the downstream node in described first tunnel, or, the link failure that Sampling network equipment 20 is connected with described downstream node.
Further, in the implementation that the first is feasible, control transmitter 22 and comprise to other network equipments transmission Fisrt fault notice message on described first tunnel:
Control transmitter 22 sends described Fisrt fault notice message, so that the head node in described first tunnel obtains described fault message to the head node in described first tunnel.
In the implementation that the second is feasible, control transmitter 22 and comprise to other network equipments transmission Fisrt fault notice message on described first tunnel:
Control transmitter 22 sends described Fisrt fault notice message, so that the tail node in described first tunnel obtains described fault message to the tail node in described first tunnel.
Alternatively, in the implementation that the first is feasible, described Fisrt fault notice message is that PATH TEAR message or reservation tear down RESV TEAR message are removed in path, by expanding described PATH TEAR message or RESV TEAR message transmits described fault message to carry ERROR_SPEC object.
In the implementation that the second is feasible, described Fisrt fault notice message is that label reclaims Label Withdraw message or label withdraw Label Release message, by expanding described Label Withdraw message or Label Release message transmits described fault message to carry type lengths values TLV.
In the implementation that the third is feasible, described failure notice message is that Border Gateway Protocol upgrades BGP Update message, and the BGP extended community attribute of being carried the described BGP_Update message of MP_UNREACH_NLRI by expansion transmits described fault message.
The network equipment 20 of the present embodiment, may be used for the technical scheme shown in method above-described embodiment performing tunnel failure of the present invention notice, it realizes principle and technique effect is similar, see the relevant record in above-described embodiment, can repeat no more in detail herein.
One of ordinary skill in the art will appreciate that: all or part of step realizing above-mentioned each embodiment of the method can have been come by the hardware that program command is relevant.Aforesaid program can be stored in a computer read/write memory medium.This program, when performing, performs the step comprising above-mentioned each embodiment of the method; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (15)
1. a method for tunnel failure notice, it is characterized in that, described method comprises:
Whether the first tunnel that the network equipment detects described network equipment place breaks down;
When the described network equipment detects that described first tunnel breaks down, obtain fault message;
The described network equipment sends Fisrt fault notice message to other network equipments on described first tunnel, and described Fisrt fault notice message carries described fault message.
2. method according to claim 1, is characterized in that, described first tunnel breaks down and specifically comprises:
The described network equipment breaks down along the upstream node in described first tunnel, or, the link failure that the described network equipment is connected with described upstream node, or, the described network equipment breaks down along the downstream node in described first tunnel, or, the link failure that the described network equipment is connected with described downstream node.
3. method according to claim 1 and 2, is characterized in that, the described network equipment sends Fisrt fault notice message to other network equipments on described first tunnel and comprises:
The described network equipment sends described Fisrt fault notice message to the head node in described first tunnel, so that the head node in described first tunnel obtains described fault message.
4. method according to claim 1 and 2, is characterized in that, the described network equipment sends Fisrt fault notice message to other network equipments on described first tunnel and comprises:
The described network equipment sends described Fisrt fault notice message to the tail node in described first tunnel, so that the tail node in described first tunnel obtains described fault message.
5. the method according to the arbitrary claim of Claims 1-4, it is characterized in that, described Fisrt fault notice message is that PATH TEAR message or reservation tear down RESV TEAR message are removed in path, by expanding described PATH TEAR message or RESV TEAR message transmits described fault message to carry mistake instruction ERROR_SPEC object.
6. the method according to the arbitrary claim of Claims 1-4, it is characterized in that, described Fisrt fault notice message is that label reclaims Label Withdraw message or label withdraw Label Release message, by expanding described Label Withdraw message or Label Release message transmits described fault message to carry type lengths values TLV.
7. the method according to the arbitrary claim of Claims 1-4, it is characterized in that, described Fisrt fault notice message is that Border Gateway Protocol upgrades BGP Update message, and the BGP extended community attribute of being carried the described BGP_Update message of MP_UNREACH_NLRI by expansion transmits described fault message.
8. the method according to the arbitrary claim of claim 1 to 7, is characterized in that, described method also comprises:
After the head node in described first tunnel receives described Fisrt fault notice message, there is if determine the second tunnel be associated with described first tunnel, then the head node in described first tunnel sends the second failure notice message to the head node on described second tunnel, so that the head node in described second tunnel obtains described fault message;
After the tail node in described first tunnel receives described Fisrt fault notice message, there is if determine described second tunnel be associated with described first tunnel, then the tail node in described first tunnel sends the second failure notice message to described second tunnel, so that the tail node in described first tunnel obtains described fault message;
Wherein, described second failure notice message carries described fault message.
9. method according to claim 8, it is characterized in that, described second failure notice message is Label Withdraw message or Label Release message, by expanding described Label Withdraw message or Label Release message transmits described fault message to carry type lengths values TLV.
10. method according to claim 8, is characterized in that, described second failure notice message is tag distribution protocol notice LDP Notification message.
11. methods according to claim 8, is characterized in that, described second failure notice message is BGP Update message, and the BGP extended community attribute of being carried the described BGP_Update message of MP_UNREACH_NLRI by expansion transmits described fault message.
12. 1 kinds of network equipments, is characterized in that, the described network equipment comprises:
Whether detecting unit, break down for the first tunnel detecting described network equipment place;
Acquiring unit, during for detecting that described first tunnel breaks down at described detecting unit, obtains fault message;
Transmitting element, for sending Fisrt fault notice message to other network equipments on described first tunnel, described Fisrt fault notice message carries described fault message.
13. equipment according to claim 12, is characterized in that, described detecting unit detects that described first tunnel breaks down and comprises:
Detect that the described network equipment breaks down along the upstream node in described first tunnel, or, the link failure that the described network equipment is connected with described upstream node detected, or, detect that the described network equipment breaks down along the downstream node in described first tunnel, or, the link failure that the described network equipment is connected with described downstream node detected.
14. equipment according to claim 12 or 13, it is characterized in that, described transmitting element sends described Fisrt fault notice message to other network equipments on described first tunnel and comprises:
Head node to described first tunnel sends described Fisrt fault notice message, so that the head node in described first tunnel obtains described fault message.
15. equipment according to claim 12 or 13, it is characterized in that, described transmitting element sends described Fisrt fault notice message to other network equipments on described first tunnel and comprises:
Tail node to described first tunnel sends described Fisrt fault notice message, so that the tail node in described first tunnel obtains described fault message.
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