CN107306197A - A kind of method and device of protecting tunnel - Google Patents
A kind of method and device of protecting tunnel Download PDFInfo
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- CN107306197A CN107306197A CN201610249303.6A CN201610249303A CN107306197A CN 107306197 A CN107306197 A CN 107306197A CN 201610249303 A CN201610249303 A CN 201610249303A CN 107306197 A CN107306197 A CN 107306197A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0663—Performing the actions predefined by failover planning, e.g. switching to standby network elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
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Abstract
The invention provides a kind of method and device of protecting tunnel, wherein, the method for protecting tunnel includes：What the downstream node that first node receives in the first label switching path LSP was sent is used to represent that the measuring route error that node or interface are closed indicates message, and message is indicated according to measuring route error, the graceful node closed or interface message occur for record, wherein, first node is the first LSP head node；First node is when for a main LSP configuration protections LSP, according to the graceful node closed of the generation of record or interface message, does not occur the 2nd LSP of graceful closing, and the protection relation set up between the 2nd LSP and main LSP on selection link.It is of the invention effectively to have evaded the node or interface for occurring graceful closing, improve the reliability that flow is forwarded in MPLS TE networks.
Description
Technical field
The present invention relates to the communications field, more particularly, to a kind of method and device of protecting tunnel.
Background technology
Multi-protocol label switching traffic engineering (Multi-Protocol Label Switching Traffic Engineering)
It is a kind of by traffic engineering (Traffic Engineering, TE) technology and multiprotocol label switching
The technology that (Multi-Protocol Label Switching, MPLS) is combined, RSVP flow work
Journey (Resource ReSer Vation Protocol-Traffic Engineering, RSVP-TE) is used in MPLS
TE dynamic tunnels are set up in network.On the protection technique of TE dynamic tunnel link failures, mainly have at present
The quick heavy-route of traffic engineering (Traffic Engineering Fast Reroute, TE FRR) and traffic engineering
Two kinds of Hot Spare (Traffic Engineering Hot Standby, TE HSB).
TE FRR protection techniques are a kind of localised protection mode, and TE FRR use a label pre-established
Switching path (Label Switched Path, LSP) protects one or more LSP, wherein, build in advance
Vertical LSP is referred to as protecting LSP, protected LSP to be referred to as main LSP.Two kinds of special joints during protection
Type is：Point of Local Repair (Point of Local Repair, PLR) and aggregation node (Merge Point, MP),
Wherein, PLR must be on main LSP path, and can not be tail node；MP must be on main LSP road
On footpath, and it can not be head node.It is main by TE FRR technologies when local link or nodes break down
Data traffic in LSP can quickly bypass faulty link or node, be forwarded from protection LSP.TE FRR
Protection technique mainly has the following two kinds implementation：Bypass (Bypass) protected mode and detour (Detour)
Protected mode.
Bypass protected modes are also referred to as device backup (Facility Backup), and the protected mode is protected with one
The a plurality of LSP of trail protection is protected, the Protection path is referred to as bypass label switched path (Bypass LSP).Bypass
Protected mode is as shown in figure 1, main LSP paths are R1 → L12a → R2 → L23a → R3.Bypass LSP1 (letters
B1) path be called R1 → L13b → R3, B1 and main LSP formation Node Protection, as L12a on main LSP
When link or R2 node failures, by link failure testing mechanism, such as interface two-way converting detection technique is triggered
Switching, flow is switched on B1.Bypass LSP2 (abbreviation B2) path is R2 → L23b → R3, with master
LSP formation link protections, when L23a link failures, main LSP traffic is switched to B2.
Detour protected modes are also referred to as one-to-one backup (One-to-one Backup), protected mode difference
Each section for main LSP is set up an Additional Protection path parallel, tries to make sure that any link of main LSP
Or node failure, all without making main LSP service traffics be affected, the Protection path is referred to as the label friendship that detours
Change path (Detour LSP).Detour protected modes are as shown in Figure 2：Main LSP paths are R1 → L12a
→R2→L23a→R3→L34a→R4.Detour LSP (abbreviation D1) path is formed on R1 is
R1 → L12b → R2 → L23a → R3 → L34a → R4, protects L12a links on main LSP, when L12a hairs
During raw failure, main LSP traffic switches to D1.Similarly, D2 (R2 → L23b → R3 → L34a → R4) and D3 (R3
→ L34b → R4) main LSP L23a and L34a links are protected respectively.
TE HSB are a kind of protected modes end to end.As shown in figure 3, main LSP paths are R1 → L12a
→R2→L23a→R3→L34a→R4.After main LSP formation, by setting up a Hot Spare Tag switching
(Hot-Standby LSP) is protected to main LSP in path, when main LSP path fails, is passed through
Fault detection mechanism, such as two-way converting detection technique, trigger main LSP traffic and switch to Hot-Standby LSP
(R1→L15b→R5→L54b→R4)。
(Graceful shutdown, gs) mechanism is closed to gracefulness in RFC5817 and has carried out associated description,
Graceful shutdown mechanism indicates the pent Internet resources in Path Err message announcements tunnel by measuring route error
Information, so that RSVP-TE dynamic tunnels can carry out heavy-route, avoids flow interrupt as far as possible.Wherein Path
Error code is 25 in Err message, and improper value represents that link-local resource needs maintenance when being 7, improper value is 8
When represent local node resource need maintenance.As shown in figure 4, original LSP paths are (before R3 gracefulnesses are closed
Path) be：When R1 → L12a → R2 → L23a → R3 → L34a → R4, R3 node elegant are closed, send wrong
Error code (Error Code) is 25, and improper value (Error Value) is 8 Path Err message.Former LSP is received
Path Err message, is first built and tears (make-before-break, MBB) open afterwards, and data are not being lost as far as possible,
Also it is not take up changing tunnel attribute on the premise of extra bandwidth.Bypass and occur after the graceful R3 closed, MBB
New LSP paths are in tunnel new route such as figure:R1→L12a→R2→L25a→R5→L54a→R4.
But in real network deployment, because MPLS-TE networks often have higher requirement to reliability,
Typically can TE FRR or TE HSB protections in core network.Disposing the MPLS-TE of these protection techniques
In network, if protection LSP is (in Bypass LSP, Detour protected modes in such as Bypass protected modes
Detour LSP, TE HSB in Hot-Standby LSP) influenceed by resource closing, it will substantially reduce
The reliability of protection.Such as：In Bypass protected modes (as shown in Figure 1), if Bypass LSP by
After the influence closed to resource, main lsp failure flow switch to Bypass LSP, Bypass LSP resources are closed
Close, then can cause the loss of business datum flow.
In summary, protection LSP is there is in MPLS-TE networks and occurs business number caused by graceful close
The problem of according to easy be lost in, reduce the reliability of flow forwarding.
The content of the invention
Hold to solve to protect LSP to occur the caused business datum of graceful closing present in MPLS-TE networks
The problem of being easy to run off, improves the reliability of flow forwarding, the invention provides a kind of method of protecting tunnel and
Device.
In order to solve the above-mentioned technical problem, the invention provides a kind of method of protecting tunnel, method includes：
First node receive the first label switching path LSP on downstream node send be used for represent node or
The measuring route error that interface is closed indicates message, and indicates message, record according to measuring route error
Occur the graceful node closed or interface message, wherein, the first node is the first LSP head node；
First node is when for a main LSP configuration protections LSP, according to the graceful node closed of the generation of record
Or interface message, the 2nd LSP of graceful closing does not occur on selection link, and set up the 2nd LSP with
Protection relation between the main LSP.
Optionally, it is described set up between the 2nd LSP and the main LSP protection relation the step of include：
2nd LSP be the main LSP bypass Bypass LSP when, set up the 2nd LSP with it is described
Quick heavy-route FRR Bypass protection relations between main LSP；Or, the 2nd LSP is described
Main LSP detour Detour LSP when, the FRR set up between the 2nd LSP and the main LSP
Detour protects relation；Or, the 2nd LSP is the Hot Spare Hot-Standby LSP of the main LSP
When, the Hot-Standby protection relations set up between the 2nd LSP and the main LSP.
Optionally, what the downstream node received in the first node in the first label switching path LSP was sent
Measuring route error for representing node or interface closing indicates after message that methods described also includes：Sentence
Whether the first LSP and main LSP that breaks has set up protection relation；Between the first LSP and main LSP
When foundation has protection relation, judge whether the flow of the main LSP switches to the first LSP；Described
When main LSP flow not yet switches to a LSP, the first LSP and main LSP is removed
Between protection relation；When the flow of the main LSP has switched to a LSP, described the is maintained
Protection relation between one LSP and the main LSP performs first to build and tears MBB open afterwards to the first LSP.
Optionally, it is described when foundation has FRR Bypass protection relations between the first LSP and main LSP
The step of removing the protection relation between the first LSP and the main LSP includes：Remove the first LSP
FRR Bypass protection relations between main LSP, and, according to the graceful node closed of the generation of record
Or interface message, the 3rd LSP for not occurring graceful closing on link is selected, the 3rd LSP and institute is set up
State the FRR Bypass protection relations between main LSP.
Optionally, the flow in the main LSP has switched to the first LSP and the first LSP and main LSP
Between set up when thering are the FRR Bypass to protect relation, maintain between the first LSP and main LSP
Protection relation；It is described maintain between the first LSP and main LSP protection relation the step of include：
The FRR Bypass between the first LSP and main LSP are maintained to protect relation, and the LSP of mark the first
For graceful closed mode.
Optionally, it is described to tear open when foundation has FRR Detour protection relations between the first LSP and main LSP
The step of except protection relation between the first LSP and the main LSP, includes：Determine whether upstream LSP
It is incorporated into the first LSP；If so, then continuing to transmit institute to the upstream LSP for being incorporated into the first LSP
State measuring route error and indicate message, and after the upstream LSP for being incorporated into the first LSP is all removed,
Remove the FRR Detour protection relations between the first LSP and main LSP；And, according to the hair of record
Do not occur the 4th LSP of graceful closing on the raw graceful node closed or interface message, selection link, set up
FRR Detour protection relations between 4th LSP and the main LSP；If it is not, directly removing described
FRR Detour protection relations between first LSP and the main LSP, and, it is excellent according to the generation of record
Do not occur the 5th LSP of graceful closing on the node or interface message of refined closing, selection link, set up described
FRR Detour protection relations between 5th LSP and the main LSP.
Optionally, the flow in the main LSP has switched to the first LSP and the first LSP and main LSP
Between set up when thering are the FRR Detour to protect relation, maintain the guarantor between the first LSP and main LSP
The step of protection relation between shield relation, maintenance the first LSP and main LSP, includes：Dimension
The FRR Detour protection relations between the first LSP and main LSP are held, the LSP of mark the first is gracefulness
Closed mode, and determine whether that upstream LSP is incorporated into the first LSP；If so, then to being incorporated into described
One LSP upstream LSP continues to transmit the measuring route error instruction message.
Optionally, it is described when foundation has Hot-Standby protection relations between the first LSP and main LSP
The step of removing the protection relation between the first LSP and the main LSP includes：According to the generation of record
Node or interface message that gracefulness is closed, the first LSP is first built and tears MBB open afterwards and does not occur to link
The 6th LSP that gracefulness is closed, and, remove the Hot-Standby between the first LSP and main LSP
Protection relation, and set up the protection relations of the Hot-Standby between the 6th LSP and the main LSP.
Optionally, the flow in the main LSP has switched to the first LSP and the first LSP and main LSP
Between set up when thering is the Hot-Standby to protect relation, the first LSP is performed and first builds and tears MBB open afterwards, institute
State to perform the first LSP and first build the step of tearing MBB open afterwards and include：MBB is performed to the first LSP,
And according to the graceful node closed of generation or interface message of record, evade and occur the graceful node closed or connect
Port address.
According to another aspect of the present invention, present invention also offers a kind of device of protecting tunnel, the dress
Put including：
Receiving module, what the downstream node for receiving in the first label switching path LSP was sent is used to represent
The measuring route error that node or interface are closed indicates message, and indicates message according to measuring route error,
The graceful node closed or interface message occur for record, wherein, the first node is the first LSP cephalomere
Point；
Protection relationship module is set up, for when for a main LSP configuration protections LSP, according to the generation of record
The 2nd LSP of graceful closing does not occur on node or interface message that gracefulness is closed, selection link, and sets up
Protection relation between 2nd LSP and the main LSP.
Optionally, the protection relationship module of setting up is used for, and the 2nd LSP is the bypass of the main LSP
During Bypass LSP, the quick heavy-route FRR Bypass set up between the 2nd LSP and the main LSP
Protection relation；Or, the 2nd LSP for the main LSP detour Detour LSP when, set up described
FRR Detour protection relations between 2nd LSP and the main LSP；Or, the 2nd LSP is
During the Hot Spare Hot-Standby LSP of the main LSP, set up the 2nd LSP and the main LSP it
Between Hot-Standby protection relation.
Optionally, described device also includes：First judge module, for judging the first LSP and the main LSP
Whether foundation has protection relation；Second judge module, has guarantor for being set up between the first LSP and main LSP
During shield relation, judge whether the flow of the main LSP switches to the first LSP；Module is removed, is used for
When the flow of the main LSP not yet switches to a LSP, the first LSP and the master are removed
Protection relation between LSP；Processing module, for having switched to described first in the flow of the main LSP
During LSP, maintain the protection relation between the first LSP and main LSP or the first LSP is held
Row is first built tears MBB open afterwards.
Optionally, it is described when foundation has FRR Bypass protection relations between the first LSP and main LSP
Remove module specifically for, remove the FRR Bypass protection relations between the first LSP and main LSP,
And, according to the graceful node closed of the generation of record or interface message, graceful pass does not occur on selection link
The 3rd LSP closed, the FRR Bypass protection relations set up between the 3rd LSP and the main LSP.
Optionally, the flow in the main LSP has switched to the first LSP and the first LSP and main LSP
Between set up have FRR Bypass protect relation when, processing module be used for maintain the first LSP and the master
Protection relation between LSP, and specifically for maintaining the FRR between the first LSP and main LSP
Bypass protects relation, and the LSP of mark the first is graceful closed mode.
Optionally, it is described to tear open when foundation has FRR Detour protection relations between the first LSP and main LSP
Except module is specifically for determining whether that upstream LSP is incorporated into the first LSP；If so, then to merging
Upstream LSP to the first LSP continues to transmit the measuring route error instruction message, and is being incorporated into
After the upstream LSP of first LSP is all removed, the FRR between the first LSP and main LSP is removed
Detour protects relation；And, according to the graceful node closed of the generation of record or interface message, select chain
Graceful the 4th LSP, the FRR set up between the 4th LSP and the main LSP closed occurs for Lu Shangwei
Detour protects relation；If it is not, directly removing the FRR Detour between the first LSP and the main LSP
Protection relation, and, according to the graceful node closed of the generation of record or interface message, select on link not
Occur graceful the 5th LSP, the FRR Detour set up between the 5th LSP and the main LSP closed
Protection relation.
Optionally, the flow in the main LSP has switched to the first LSP and the first LSP and main LSP
Between set up have FRR Detour protect relation when, the processing module be used for maintain the first LSP and institute
The protection relation between main LSP is stated, and specifically for maintaining the FRR between the first LSP and main LSP
Detour protects relation, and the LSP of mark the first is graceful closed mode, and determines whether that upstream LSP merges
To the first LSP；If so, then continuing to transmit the measurement road to the upstream LSP for being incorporated into the first LSP
Footpath error indicates message.
Optionally, it is described when foundation has Hot-Standby protection relations between the first LSP and main LSP
Module is removed specifically for according to the graceful node closed of the generation of record or interface message, by described first
LSP first builds and tears the 6th LSP that graceful closing does not occur to link for MBB open afterwards, and, remove described first
Hot-Standby protection relations between LSP and main LSP, and set up the 6th LSP and the main LSP
Between Hot-Standby protection relation.
Optionally, the flow in the main LSP has switched to the first LSP and the first LSP and main LSP
Between set up have Hot-Standby protect relation when, the processing module be used for elder generation is performed to the first LSP
Tear MBB after building open, and specifically for performing MBB to the first LSP, and it is graceful according to the generation of record
The node or interface message of closing, evade and occur the graceful node or interface IP address closed.
The beneficial effects of the invention are as follows：
Do not occur on the node or interface message for the graceful closing of generation that the present invention passes through record, selection link excellent
2nd LSP of refined closing, has effectively evaded the link for having occurred graceful closing, has solved existing MPLS-TE
LSP is protected to occur the problem of caused business datum is easily lost in when gracefulness is closed present in network, effectively
Evade and occurred the graceful node or interface closed, improved the reliability that flow is forwarded in MPLS-TE networks.
Brief description of the drawings
Fig. 1 represents the path schematic diagram of Bypass protected modes in the prior art；
Fig. 2 represents the path schematic diagram of Detour protected modes in the prior art；
Fig. 3 represents the path schematic diagram of TE HSB protected modes in the prior art；
Path schematic diagram when Fig. 4 represents that graceful close occurs in the prior art；
Fig. 5 represents a kind of step flow chart of the method for protecting tunnel in embodiments of the invention；
Fig. 6 represents the step flow chart of the method for the protecting tunnel after step 501 in embodiments of the invention；
The FRR Bypass that Fig. 7 represents to set up between the 2nd LSP and main LSP in embodiments of the invention are protected
Shield relation realizes schematic diagram；
Fig. 8, which represents to set up between the first LSP and main LSP in embodiments of the invention, FRR Bypass guarantors
During shield relation, that removes the protection relation between the first LSP and main LSP realizes schematic diagram；
Fig. 9, which represents to set up between the first LSP and main LSP in embodiments of the invention, FRR Bypass guarantors
During shield relation, maintain the protection relation between the first LSP and main LSP realizes schematic diagram；
The FRR Detour that Figure 10 represents to set up between the 2nd LSP and main LSP in embodiments of the invention are protected
Shield relation realizes schematic diagram；
Figure 11, which represents to set up between the first LSP and main LSP in embodiments of the invention, FRR Detour guarantors
During shield relation, that removes the protection relation between the first LSP and main LSP realizes schematic diagram；
Figure 12, which represents to set up between the first LSP and main LSP in embodiments of the invention, FRR Detour guarantors
During shield relation, maintain the protection relation between the first LSP and main LSP realizes schematic diagram；
Figure 13 represents to set up Hot-Standby between the 2nd LSP and main LSP in embodiments of the invention and protected
Relation realizes schematic diagram；
Figure 14, which represents to set up between the first LSP and main LSP in embodiments of the invention, Hot-Standby guarantors
During shield relation, that removes the protection relation between the first LSP and main LSP realizes schematic diagram；
Figure 15, which represents to set up between the first LSP and main LSP in embodiments of the invention, Hot-Standby guarantors
During shield relation, MBB is performed to the first LSP realizes schematic diagram；
Figure 16 represents the schematic diagram of the device of protecting tunnel in embodiments of the invention.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although being shown in accompanying drawing
The exemplary embodiment of the disclosure, it being understood, however, that may be realized in various forms the disclosure without should be by
Embodiments set forth here is limited.It is opposite to be able to be best understood from this there is provided these embodiments
It is open, and can by the scope of the present disclosure completely convey to those skilled in the art.
As shown in figure 5, being the step flow chart of the method for protecting tunnel in embodiments of the invention, this method
Comprise the following steps：
Step 501, what the downstream node that first node is received in the first label switching path LSP was sent is used for
Represent that the measuring route error that node or interface are closed indicates message, and message indicated according to measuring route error,
The graceful node closed or interface message occur for record.
In this step, first node is the first LSP head node.Specifically, when the first of the first LSP
When node receives the measuring route error instruction Path Error message for representing node or interface closing, Ke Yigen
According to the Path Error message, preserved under the first LSP and occur the graceful node closed or interface message, wherein,
It can be the graceful node or interface IP address closed of generation to occur the graceful node closed or interface message.
Step 502, first node is graceful according to the generation of record when for a main LSP configuration protections LSP
The 2nd LSP of graceful closing does not occur on the node or interface message of closing, selection link, and sets up second
Protection relation between LSP and main LSP.
In this step, if specifically, the first LSP and main LSP does not form protection relation, as the first LSP
First node when being a main LSP configuration protections LSP, can be according to the graceful node closed of generation of record
Or interface message, the 2nd LSP for not occurring graceful closing on link is selected, and set up the 2nd LSP and main LSP
Between protection relation., can be with specifically, when setting up the protection relation between the 2nd LSP and main LSP
Different types of protection relation is set up according to the 2nd LSP type, if for example, the 2nd LSP is main LSP's
Bypass LSP, then the FRR Bypass protection relations set up between the 2nd LSP and main LSP；If second
When LSP is main LSP Detour LSP, then the FRR Detour set up between the 2nd LSP and main LSP
Protection relation；If the 2nd LSP is main LSP Hot-Standby LSP, the 2nd LSP and main LSP are set up
Between Hot-Standby protection relation.
So, the present embodiment is closed when for a main LSP configuration protections LSP by the generation gracefulness of record
Node or interface message, the 2nd LSP of graceful closing does not occur on selection link, and set up main LSP with
Protection relation between 2nd LSP, has effectively evaded the node or interface for having occurred graceful closing, solves
Caused business datum easily flows when graceful close occurs for protection LSP present in existing MPLS-TE networks
The problem of mistake, improve the reliability that flow is forwarded in MPLS-TE networks.
In addition, when having node or interface closing on the first LSP, except for main LSP configuration protections LSP
When need to evade and occur the graceful node or interface closed, having formed protection in the first LSP and main LSP closes
When being, need also exist for that the protection relation is further processed, to avoid the traffic flow on main LSP as far as possible
Lose, it is ensured that the reliability of flow forwarding.
Specifically, as shown in fig. 6, the step flow chart of the method for the protecting tunnel after step 501.
Specifically, after step 501, this method comprises the following steps：
Step 601, judge whether the first LSP and main LSP has set up protection relation.
In this step, specifically, first node judges whether main LSP and main LSP has set up protection relation,
If so, then entering step 602.In addition, specifically, the protection relation can include FRR Bypass protections
Relation, FRR Detour protection relations and Hot-Standby protection relations.
Step 602, when foundation has protection relation between the first LSP and main LSP, main LSP stream is judged
Whether amount switches to the first LSP.
In this step, specifically, when foundation has protection relation between the first LSP and main LSP, judging
Whether main LSP flow switches to the first LSP, if not switching to the first LSP, into step 603,
If the first LSP is had been switched to, into step 604.
Step 603, when main LSP flow not yet switches to a LSP, the first LSP and main LSP is removed
Between protection relation.
In this step, when main LSP flow not yet switches to a LSP, the first LSP and master are removed
Protection relation between LSP.Specifically, in the protection relation between removing the first LSP and main LSP,
Need to consider that the protection relation between the first LSP and main LSP is FRR Bypass protections relation, FRR
Detour protects relation or Hot-Standby protection relations.
Optionally, if the protection relation set up between the first LSP and main LSP, which is FRR Bypass, protects pass
System, then when the FRR Bypass between removing the first LSP and main LSP protect relation, in addition it is also necessary to according to
The 3rd LSP of graceful closing does not occur on the graceful node closed of generation or interface message of record, selection link,
And set up the protection relations of the FRR Bypass between the 3rd LSP and main LSP.
If the protection relation set up between the first LSP and main LSP, which is FRR Detour, protects relation, tearing open
, it is necessary to it is first determined whether there is upstream LSP to be incorporated into during except protection relation between the first LSP and main LSP
First LSP, if so, then needing to continue to transmit measuring route error to the upstream LSP for being incorporated into the first LSP
Message is indicated, after the upstream LSP for being incorporated into the first LSP is all removed, the first LSP and main LSP is removed
Between FRR Detour protection relations, and according to the graceful node closed of generation or interface message of record,
Do not occur the 4th LSP, the FRR set up between the 4th LSP and main LSP of graceful closing on selection link
Detour protects relation；If it is not, then directly removing the FRR Detour protections between the first LSP and main LSP
Relation, and according to the graceful node closed of generation or interface message of record, select that gracefulness does not occur on link
The 5th LSP closed, the FRR Detour protection relations set up between the 5th LSP and main LSP.
If the protection relation set up between the first LSP and main LSP, which is Hot-Standby, protects relation,
When removing the protection relation between the first LSP and main LSP, according to the graceful node closed of the generation of record or
Interface message, the first LSP is first built and tears the 6th LSP that graceful closing does not occur to link for MBB open afterwards,
The Hot-Standby protection relations between the first LSP and main LSP are removed, and set up the 6th LSP and main LSP
Between Hot-Standby protection relation.
Step 604, when main LSP flow has switched to a LSP, the first LSP and main LSP is maintained
Between protection relation or the first LSP is performed first build and tear MBB open afterwards.
In this step, when main LSP flow has switched to a LSP, if specifically, the first LSP
Protection relation between main LSP protects relation or FRR Detour protection relations for FRR Bypass,
Then maintain the protection relation between the first LSP and main LSP；If the protection between the first LSP and main LSP is closed
It is to protect relation for Hot-Standby, then MBB flows is performed to the first LSP.
If specifically, protection relation between the first LSP and main LSP protects relation for FRR Bypass,
When then maintaining the protection relation between the first LSP and main LSP, the LSP of mark the first is graceful closed mode.
If the protection relation between the first LSP and main LSP protects relation for FRR Detour, the first LSP is maintained
When FRR Detour between main LSP protect relation, the LSP of mark the first is graceful closed mode, and is sentenced
It is disconnected whether to there is upstream LSP to be incorporated into the first LSP；If so, then to be incorporated into the first LSP upstream LSP after
Resume and pass measuring route error instruction message.If the protection relation between the first LSP and main LSP is
Hot-Standby protects relation, then MBB is performed to the first LSP, and close according to the generation gracefulness of record
Node or interface message, evade and occur the graceful node or interface IP address closed.
So, after the graceful node closed or interface message occur for record, on the one hand for a main LSP
During configuration protection LSP, the node or interface message closed according to generation gracefulness select not occur on link
The 2nd LSP that gracefulness is closed, evades on link and occurs the graceful node or interface closed；On the other hand, when
The flow that first LSP and main LSP has been formed on protection relation and main LSP not yet switches to the first LSP
When upper, then according to the protection relationship type between the first LSP and main LSP, for example, FRR Bypass are protected
Shield relation, FRR Detour protection relations and Hot-Standby protection relations, remove the first LSP and main LSP
Between protection relation；Another further aspect, when the first LSP and main LSP has formed protection relation and main LSP
On flow when having been switched on the first LSP, then according to the protection relation between the first LSP and main LSP
Type, maintains the protection relation between the first LSP and main LSP or performs MBB flows to the first LSP.
So, the present embodiment is closed according to the generation gracefulness of record node or interface message, in above-mentioned different situations
Under reduce the influence for occurring the graceful node or interface closed to main LSP to greatest extent, effectively evade
Occur the node or interface of graceful closing, solve protection LSP and occur graceful close on caused main LSP
The problem of data are easily lost in, improves the reliability that flow is forwarded in MPLS-TE networks.
Below, with reference to Fig. 7 to Figure 15 to FRR Bypass protect relation, FRR Detour protect relation and
In Hot-Standby protection relations, when not setting up protection relation between the first LSP and main LSP, is set up
Protection relation between two LSP and main LSP, and foundation has protection relation between the first LSP and main LSP
When, remove the first LSP and main LSP between protection relation, maintenance the first LSP and main LSP between guarantor
First LSP execution MBB is illustrated shield relation.
As shown in fig. 7, to set up the reality that the FRR Bypass between the 2nd LSP and main LSP protect relation
Existing schematic diagram.In the figure 7, main LSP paths are R1 → L12 → R2 → L23 → R3, are now configured
There are two optional backup LSP in FRR Bypass protection relations：First Bypass LSP (R2 → L24 → R4
→ L43 → R3) and the 2nd Bypass LSP (R2 → L25 → R5 → L53 → R3).But the first LSP
Graceful closing (gs) occurs for the L43 in the link in Bypass LSP, then main LSP formation FRR Bypass
During protection relation, the 2nd Bypass LSP of graceful closing do not occur for prioritizing selection, that is, set up main LSP and the
FRR Bypass protection relations between two LSP.
As shown in figure 8, when having FRR Bypass protection relations to be set up between the first LSP and main LSP,
That removes the protection relation between the first LSP and main LSP realizes schematic diagram.In fig. 8, main LSP paths
For R1 → L12 → R2 → L23 → R3, main LSP and the first Bypass LSP (R2 → L24 → R4 →
L43 → R3) FRR Bypass protection relations are formed, and the protection relation is in non-switching state.Work as link
When L43 or node R 4 perform graceful closing flow path, sent (25,7) to R2 along the first Bypass LSP
Or (25,8) Path Err message, when R2 receives this Path Err message, the first Bypass LSP are marked
For graceful closed mode, while remove the FRR Bypass protection relations not switched, and set up main LSP with not
Occurs the FRR between graceful the 2nd Bypass LSP (R2 → L25 → R5 → L53 → R3) closed
Bypass protects relation.
As shown in figure 9, when having FRR Bypass protection relations to be set up between the first LSP and main LSP,
Maintain the protection relation between the first LSP and main LSP realizes schematic diagram.In fig .9, main LSP paths
For R1 → L12 → R2 → L23 → R3, main LSP and the first Bypass LSP (R2 → L25 → R5 →
L53 → R3) FRR Bypass protection relations are formed, and L23 links break down, FRR Bypass are protected
Shield relation is in switching state.When graceful close occurs for link L53 or node R 5, along the first Bypass
LSP sends (25,7) or (25,8) Path Err message to R2, when R2 receives this Path Err message,
First Bypass LSP are labeled as graceful closed mode, but because FRR Bypass protection relations are to have switched
State, therefore in order to avoid influence flow, maintain the FRR Bypass between the first LSP and main LSP to protect
Shield relation, while also not performing MBB flows to the first Bypass LSP, the recovery of LSP data link is handed over
Switchback MBB to main LSP.
As shown in Figure 10, for set up the FRR Detour between the 2nd LSP and main LSP protect relation reality
Existing schematic diagram.In Fig. 10, main LSP paths are R1 → L12 → R2 → L23 → R3, are now configured
When FRR Detour protect relation, there are two optional link L13a in R1 points formation FRR Detour protection relations
And L13b.But, graceful close occurs for L13a.Exclude and occur when then forming FRR Detour protection relations
The L13a links that gracefulness is closed, selection L13b link formation FRR Detour protection relations.
As shown in figure 11, be between the first LSP and main LSP set up have FRR Detour protect relation when,
That removes the protection relation between the first LSP and main LSP realizes schematic diagram.In fig. 11, main LSP roads
Footpath is R1 → L12a → R2 → L23a → R3, during configuration FRR Detour protection relations, R1 points formation first
Detour LSP (R1 → L12b → R2 → L23b → R3), the 2nd Detour LSP of R2 points formation
(R2 → L23b → R3), the protection relation is in non-switching state.When graceful close occurs for L23b links,
Path Err message is sent upstream by along the 2nd Detour LSP, Path Err message reaches R2 points, and R2 points are accurate
It is standby to remove the 2nd Detour LSP and FRR Detour protection relations, but now find there are the first Detour LSP
Path downstream merge with the 2nd Detour LSP, now in order to prevent the Detour LSP of upstream the first switch when,
Flow wouldn't remove the 2nd Detour LSP by the 2nd Detour LSP.Now Path Err message edge
First Detour LSP continue up trip transmission, and Path Err message is reached after R1 points, and R1 points first remove the
One Detour LSP, and Path Tear message is sent to R2, the 2nd Detour LSP of R2 dismountings.Last R2
Point reselects other links and forms new according to the graceful node closed of generation or interface message of record
FRR Detour protect relation, and the first new Detour LSP paths are:R1 → L12b → R2 → L23c → R3,
The 2nd new Detour LSP paths are:R2→L23c→R3.
As shown in figure 12, be between the first LSP and main LSP set up have FRR Detour protect relation when,
Maintain the protection relation between the first LSP and main LSP realizes schematic diagram.In fig. 12, main LSP roads
Footpath is R1 → L12a → R2 → L23a → R3, during configuration FRR Detour protection relations, R1 points formation first
Detour LSP (R1 → L12b → R2 → L23b → R3), the 2nd Detour LSP of R2 points formation
(R2→L23b→R3).When L12a breaks down, main LSP switches to the first Detour LSP.Now,
When graceful close occurs for L23b links, Path Err message transmissions are to R2 points, due to the first Detour LSP
Downstream merges with the 2nd Detour LSP links, wouldn't now remove the 2nd Detour LSP, Path Err message
Trip transmission is continued up along the first Detour LSP.Path Err message is reached after R1 points, due to main LSP
The first Detour LSP are had switched to, therefore R1 points are not carried out to occurring graceful the first Detour LSP closed
Any response, link reselects the switchback MBB for giving main LSP.
As shown in figure 13, to set up the realization that Hot-Standby between the 2nd LSP and main LSP protects relation
Schematic diagram.In fig. 13, main LSP paths are R1 → L12a → R2 → L23a → R3, configure Hot-Standby
During protection relation, L23b is more excellent compared with L23c links, therefore when forming Hot-Standby protection relations, preferably
For R1 → L12b → R2 → L23b → R3.But because graceful closing, Path Err message transmissions occur for L23b
To R1, exclusion L23b links when Hot-Standby protections relation is re-formed, main LSP and R1 → L12b →
R2 → L23c → R3 formation Hot-Standby protection relations.
As shown in figure 14, be between the first LSP and main LSP set up have Hot-Standby protect relation when,
That removes the protection relation between the first LSP and main LSP realizes schematic diagram.In fig. 14, main LSP roads
Footpath is R1 → L12a → R2 → L23a → R3, during configuration Hot-Standby protection relations, Hot-Standby
LSP paths are R1 → L12b → R2 → L23b → R3, and main LSP and Hot-Standby LSP are formed
Hot-Standby protects relation and the protection relation is in non-switching state.Now L23b links occur graceful
Close, Path Err message transmissions to R1, Hot-Standby LSP carry out MBB processing, MBB is arrived
R1 → L12b → R2 → L23c → R3, main LSP release Hot-Standby with original Hot-Standby LSP
Protection relation, again with new Hot-Standby LSP formation Hot-Standby protection relations.
As shown in figure 15, be between the first LSP and main LSP set up have Hot-Standby protect relation when,
MBB is performed to the first LSP realizes schematic diagram.In fig .15, main LSP paths are
R1 → L12a → R2 → L23a → R3, during configuration Hot-Standby protection relations, Hot-Standby LSP are
R1→L12b→R2→L23b→R3.When L12a links break down, main LSP traffic is switched to
Hot-Standby LSP.Now graceful closing, Path Err message transmissions to R1, R1 occur for L23b links
Node carries out MBB streams according to the graceful node closed of the generation carried in Path Err message or interface message
Journey, evades L23b links by the graceful node closed of the generation recorded or interface message.
So, in an embodiment of the present invention, occur the graceful node or interface closed by evading, improve
The reliability of flow forwarding.
It is protecting tunnel in embodiments of the invention as shown in figure 16 according to another aspect of the present invention
The schematic diagram of device, the device includes：
Receiving module 1601, what the downstream node for receiving in the first label switching path LSP was sent is used for
Represent that the measuring route error that node or interface are closed indicates message, and message indicated according to measuring route error,
The graceful node closed or interface message occur for record；
Protection relationship module 1602 is set up, for when for a main LSP configuration protections LSP, according to record
Occur do not occur the 2nd LSP of graceful closing on the graceful node closed or interface message, selection link, and
The protection relation set up between the 2nd LSP and main LSP.
Optionally, setting up protection relationship module is used for, when the 2nd LSP is main LSP bypass Bypass LSP,
The quick heavy-route FRR Bypass protection relations set up between the 2nd LSP and main LSP；Or, second
LSP for main LSP detour Detour LSP when, the FRR Detour set up between the 2nd LSP and main LSP
Protection relation；Or, when the 2nd LSP is main LSP Hot Spare Hot-Standby LSP, set up second
Hot-Standby protection relations between LSP and main LSP.
Optionally, device also includes：First judge module, for judging whether the first LSP and main LSP builds
It is vertical to have protection relation；Second judge module, has protection relation for being set up between the first LSP and main LSP
When, judge whether main LSP flow switches to the first LSP；Module is removed, for the flow in main LSP
When not yet switching to a LSP, the protection relation between the first LSP and main LSP is removed；Processing module,
For when main LSP flow has switched to a LSP, maintaining the protection between the first LSP and main LSP
Relation performs to the first LSP and first builds and tear MBB open afterwards.
Optionally, when foundation there are FRR Bypass protection relations between the first LSP and main LSP, remove
Module specifically for, remove the first LSP and main LSP between FRR Bypass protection relation, and,
According to the graceful node closed of the generation of record or interface message, do not occur the of graceful closing on selection link
Three LSP, the FRR Bypass protection relations set up between the 3rd LSP and main LSP.
Optionally, the flow in main LSP has switched to the first LSP and set up between the first LSP and main LSP
When having FRR Bypass protection relations, processing module is used to maintain the protection between the first LSP and main LSP
Relation, and specifically for, the FRR Bypass protection relations between the first LSP and main LSP are maintained, with
And the LSP of mark the first is graceful closed mode.
Optionally, when foundation there are FRR Detour protection relations between the first LSP and main LSP, mould is removed
Block is specifically for determining whether that upstream LSP is incorporated into the first LSP；If so, then to being incorporated into the first LSP
Upstream LSP continue to transmit measuring route error and indicate message, and in the upstream LSP for being incorporated into the first LSP
After all removing, the FRR Detour protection relations between the first LSP and main LSP are removed；And, according to
The 4th LSP of graceful closing does not occur on the graceful node closed of generation or interface message of record, selection link,
The FRR Detour protection relations set up between the 4th LSP and main LSP；If it is not, directly removing the first LSP
FRR Detour protection relations between main LSP, and, according to the graceful node closed of the generation of record
Or interface message, the 5th LSP for not occurring graceful closing on link is selected, the 5th LSP and main LSP is set up
Between FRR Detour protection relation.
Optionally, the flow in main LSP has switched to the first LSP and set up between the first LSP and main LSP
When having FRR Detour protection relations, processing module is used to maintain the protection between the first LSP and main LSP to close
System, and specifically for maintaining the FRR Detour between the first LSP and main LSP to protect relation, mark first
LSP is graceful closed mode, and determines whether that upstream LSP is incorporated into the first LSP；If so, then to conjunction
And to the first LSP upstream LSP continue transmit measuring route error indicate message.
Optionally, when foundation there are Hot-Standby protection relations between the first LSP and main LSP, remove
Module is specifically for according to the graceful node closed of the generation of record or interface message, the first LSP is first built
Tear the 6th LSP that graceful closing does not occur to link for MBB open afterwards, and, remove the first LSP and main LSP
Between Hot-Standby protection relation, and set up the Hot-Standby between the 6th LSP and main LSP guarantor
Shield relation.
Optionally, the flow in main LSP has switched to the first LSP and set up between the first LSP and main LSP
When having Hot-Standby protection relations, processing module is used to the first LSP is performed first to build to tear MBB open afterwards, and
Specifically for performing MBB to the first LSP, and according to the graceful node closed of generation or interface message of record,
Evade and occur the graceful node or interface IP address closed.
Above-described is the preferred embodiment of the present invention, it should be pointed out that for the ordinary people of the art
For member, some improvements and modifications can also be made under the premise of principle of the present invention is not departed from, these
Improvements and modifications are also within the scope of the present invention.
Claims (18)
1. a kind of method of protecting tunnel, it is characterised in that methods described includes：
First node receive the first label switching path LSP on downstream node send be used for represent node or
The measuring route error that interface is closed indicates message, and indicates message, record according to measuring route error
Occur the graceful node closed or interface message, wherein, the first node is the first LSP head node；
First node is when for a main LSP configuration protections LSP, according to the graceful node closed of the generation of record
Or interface message, the 2nd LSP of graceful closing does not occur on selection link, and set up the 2nd LSP with
Protection relation between the main LSP.
2. according to the method described in claim 1, it is characterised in that described to set up the 2nd LSP and institute
The step of stating the protection relation between main LSP includes：
2nd LSP be the main LSP bypass Bypass LSP when, set up the 2nd LSP with
Quick heavy-route FRR Bypass protection relations between the main LSP；
Or, the 2nd LSP for the main LSP detour Detour LSP when, set up described second
FRR Detour protection relations between LSP and the main LSP；
Or, when the 2nd LSP is the Hot Spare Hot-Standby LSP of the main LSP, set up institute
State the Hot-Standby protection relations between the 2nd LSP and the main LSP.
3. according to the method described in claim 1, it is characterised in that receive first in the first node and mark
What the downstream node on label switching path LSP was sent is used for the measuring route error for representing that node or interface are closed
Indicate after message, methods described also includes：
Judge whether the first LSP and main LSP has set up protection relation；
Set up between the first LSP and main LSP when having protection relation, judge the main LSP flow whether
Switch to the first LSP；
When the flow of the main LSP not yet switches to a LSP, the first LSP and institute are removed
State the protection relation between main LSP；
When the flow of the main LSP has switched to a LSP, maintain the first LSP with it is described
Protection relation between main LSP performs first to build and tears MBB open afterwards to the first LSP.
4. method according to claim 3, it is characterised in that built between the first LSP and main LSP
It is vertical when thering are the FRR Bypass to protect relation, the guarantor between dismounting the first LSP and main LSP
The step of shield relation, includes：
The FRR Bypass protection relations between the first LSP and main LSP are removed, and, according to note
The 3rd LSP of graceful closing does not occur on the graceful node closed of generation or interface message of record, selection link,
The FRR Bypass protection relations set up between the 3rd LSP and the main LSP.
5. the method according to claim 3 or 4, it is characterised in that the main LSP flow
Switch to the first LSP and between the first LSP and main LSP set up have FRR Bypass protect relation when,
Maintain the protection relation between the first LSP and the main LSP；It is described to maintain the first LSP and institute
The step of stating the protection relation between main LSP includes：
The FRR Bypass between the first LSP and main LSP are maintained to protect relation, and mark first
LSP is graceful closed mode.
6. method according to claim 3, it is characterised in that built between the first LSP and main LSP
It is vertical when thering are the FRR Detour to protect relation, the protection between dismounting the first LSP and main LSP
The step of relation, includes：
Determine whether that upstream LSP is incorporated into the first LSP；
If so, then continuing to transmit the measuring route and malfunction to the upstream LSP for being incorporated into the first LSP to refer to
Show message, and after the upstream LSP for being incorporated into the first LSP is all removed, remove the first LSP
FRR Detour protection relations between main LSP；And, according to the graceful node closed of the generation of record
Or interface message, the 4th LSP for not occurring graceful closing on link is selected, the 4th LSP and institute is set up
State the FRR Detour protection relations between main LSP；
If it is not, the FRR Detour protection relations between the first LSP and the main LSP are directly removed,
And, according to the graceful node closed of the generation of record or interface message, graceful pass does not occur on selection link
The 5th LSP closed, the FRR Detour protection relations set up between the 5th LSP and the main LSP.
7. the method according to claim 3 or 6, it is characterised in that the main LSP flow
Switch to the first LSP and between the first LSP and main LSP set up have FRR Detour protect relation when,
Maintain the protection relation between the first LSP and the main LSP, maintenance the first LSP and institute
The step of stating the protection relation between main LSP includes：
The FRR Detour between the first LSP and main LSP are maintained to protect relation, the LSP of mark the first
For graceful closed mode, and determine whether that upstream LSP is incorporated into the first LSP；
If so, then continuing to transmit the measuring route and malfunction to the upstream LSP for being incorporated into the first LSP to refer to
Show message.
8. method according to claim 3, it is characterised in that built between the first LSP and main LSP
It is vertical when thering is the Hot-Standby to protect relation, the guarantor between dismounting the first LSP and main LSP
The step of shield relation, includes：
According to the graceful node closed of the generation of record or interface message, the first LSP is first built and torn open afterwards
MBB to the 6th LSP for not occurring graceful closing on link, and, remove the first LSP and main LSP
Between Hot-Standby protection relations, and set up between the 6th LSP and the main LSP
Hot-Standby protects relation.
9. the method according to claim 3 or 8, it is characterised in that the main LSP flow
Switch to the first LSP and between the first LSP and main LSP set up have Hot-Standby protect relation when,
First LSP is performed first to build and tears MBB open afterwards, described first built to the first LSP execution tears MBB open afterwards
The step of include：
MBB is performed to the first LSP, and according to the graceful node closed of generation or interface message of record,
Evade and occur the graceful node or interface IP address closed.
10. a kind of device of protecting tunnel, it is characterised in that described device includes：
Receiving module, what the downstream node for receiving in the first label switching path LSP was sent is used to represent
The measuring route error that node or interface are closed indicates message, and indicates message according to measuring route error,
The graceful node closed or interface message occur for record；
Protection relationship module is set up, for when for a main LSP configuration protections LSP, according to the generation of record
The 2nd LSP of graceful closing does not occur on node or interface message that gracefulness is closed, selection link, and sets up
Protection relation between 2nd LSP and the main LSP.
11. device according to claim 10, it is characterised in that the foundation protection relationship module is used
In,
2nd LSP be the main LSP bypass Bypass LSP when, set up the 2nd LSP with
Quick heavy-route FRR Bypass protection relations between the main LSP；
Or, the 2nd LSP for the main LSP detour Detour LSP when, set up described second
FRR Detour protection relations between LSP and the main LSP；
Or, when the 2nd LSP is the Hot Spare Hot-Standby LSP of the main LSP, set up institute
State the Hot-Standby protection relations between the 2nd LSP and the main LSP.
12. device according to claim 10, it is characterised in that described device also includes：
First judge module, for judging whether the first LSP and main LSP has set up protection relation；
Second judge module, when having protection relation for being set up between the first LSP and main LSP, judges institute
Whether the flow for stating main LSP switches to the first LSP；
Module is removed, for when the flow of the main LSP not yet switches to a LSP, removing institute
State the protection relation between the first LSP and the main LSP；
Processing module, for when the flow of the main LSP has switched to a LSP, remaining described
Protection relation between first LSP and the main LSP performs first to build and tears MBB open afterwards to the first LSP.
13. device according to claim 12, it is characterised in that between the first LSP and main LSP
When foundation has the FRR Bypass to protect relation, the dismounting module specifically for, remove the first LSP with
FRR Bypass protection relations between main LSP, and, according to the graceful node closed of the generation of record or
Do not occur the 3rd LSP of graceful closing on interface message, selection link, set up the 3rd LSP with it is described
FRR Bypass protection relations between main LSP.
14. the device according to claim 12 or 13, it is characterised in that in the stream of the main LSP
Amount, which has switched to the first LSP and set up between the first LSP and main LSP, FRR Bypass protections pass
When being, processing module is used to maintain the protection relation between the first LSP and the main LSP, and specifically
For, maintain the FRR Bypass protection relations between the first LSP and main LSP, and mark the
One LSP is graceful closed mode.
15. device according to claim 12, it is characterised in that between the first LSP and main LSP
When foundation has FRR Detour protection relations, the dismounting module is specifically for determining whether upstream LSP
It is incorporated into the first LSP；If so, then continuing to transmit institute to the upstream LSP for being incorporated into the first LSP
State measuring route error and indicate message, and after the upstream LSP for being incorporated into the first LSP is all removed,
Remove the FRR Detour protection relations between the first LSP and main LSP；And, according to the hair of record
Do not occur the 4th LSP of graceful closing on the raw graceful node closed or interface message, selection link, set up
FRR Detour protection relations between 4th LSP and the main LSP；If it is not, directly removing institute
The FRR Detour protection relations between the first LSP and the main LSP are stated, and, according to the generation of record
Do not occur the 5th LSP of graceful closing on node or interface message that gracefulness is closed, selection link, set up institute
State the FRR Detour protection relations between the 5th LSP and the main LSP.
16. the device according to claim 12 or 15, it is characterised in that in the stream of the main LSP
Amount, which has switched to the first LSP and set up between the first LSP and main LSP, FRR Detour protections pass
When being, the processing module is used to maintain the protection relation between the first LSP and the main LSP, and
Specifically for maintaining the FRR Detour between the first LSP and main LSP to protect relation, mark first
LSP is graceful closed mode, and determines whether that upstream LSP is incorporated into the first LSP；If so, then to conjunction
And the extremely upstream LSP of the first LSP continues to transmit the measuring route error instruction message.
17. device according to claim 12, it is characterised in that between the first LSP and main LSP
When foundation has Hot-Standby protection relations, the dismounting module is specifically for graceful according to the generation of record
The node or interface message of closing, the first LSP is first built and tears MBB open afterwards gracefulness does not occur to link
The 6th LSP closed, and, remove the Hot-Standby protections between the first LSP and main LSP
Relation, and set up the protection relations of the Hot-Standby between the 6th LSP and the main LSP.
18. the device according to claim 12 or 17, it is characterised in that in the stream of the main LSP
Amount, which has switched to the first LSP and set up between the first LSP and main LSP, Hot-Standby protections pass
When being, the processing module is used to the first LSP is performed first to build to tear MBB open afterwards, and specifically for institute
State the first LSP and perform MBB, and according to the graceful node closed of generation or interface message of record, evade hair
The raw graceful node or interface IP address closed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610249303.6A CN107306197A (en) | 2016-04-20 | 2016-04-20 | A kind of method and device of protecting tunnel |
| PCT/CN2017/072486 WO2017181756A1 (en) | 2016-04-20 | 2017-01-24 | Channel protection method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610249303.6A CN107306197A (en) | 2016-04-20 | 2016-04-20 | A kind of method and device of protecting tunnel |
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| CN107306197A true CN107306197A (en) | 2017-10-31 |
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| CN201610249303.6A Withdrawn CN107306197A (en) | 2016-04-20 | 2016-04-20 | A kind of method and device of protecting tunnel |
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| CN (1) | CN107306197A (en) |
| WO (1) | WO2017181756A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021115162A1 (en) * | 2019-12-13 | 2021-06-17 | 中兴通讯股份有限公司 | Link protection method, device, ingress node, and storage medium |
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| CN1423458A (en) * | 2001-11-30 | 2003-06-11 | 深圳市中兴通讯股份有限公司 | Method for realizing signalling chair-circuit redundant back-up in IP network |
| CN101060497A (en) * | 2007-06-11 | 2007-10-24 | 杭州华三通信技术有限公司 | A traffic engineering tunnel creating method and device |
| CN101552715A (en) * | 2008-03-31 | 2009-10-07 | 华为技术有限公司 | Method, node and system for establishing backup label switching path |
| US20150326505A1 (en) * | 2014-05-06 | 2015-11-12 | Lenovo Enterprise Solutions (Singapore) Pte. Ltd. | Logical switch architecture for network virtualization |
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| US9112713B2 (en) * | 2012-06-27 | 2015-08-18 | Cisco Technology, Inc. | System and method for efficient point-to-multi-point traffic engineering (P2MP-TE) path protection |
| US9001672B2 (en) * | 2012-07-27 | 2015-04-07 | Alcatel Lucent | System, method and apparatus conforming path cost criteria across multiple ABRs |
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- 2016-04-20 CN CN201610249303.6A patent/CN107306197A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1423458A (en) * | 2001-11-30 | 2003-06-11 | 深圳市中兴通讯股份有限公司 | Method for realizing signalling chair-circuit redundant back-up in IP network |
| CN101060497A (en) * | 2007-06-11 | 2007-10-24 | 杭州华三通信技术有限公司 | A traffic engineering tunnel creating method and device |
| CN101552715A (en) * | 2008-03-31 | 2009-10-07 | 华为技术有限公司 | Method, node and system for establishing backup label switching path |
| US20150326505A1 (en) * | 2014-05-06 | 2015-11-12 | Lenovo Enterprise Solutions (Singapore) Pte. Ltd. | Logical switch architecture for network virtualization |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021115162A1 (en) * | 2019-12-13 | 2021-06-17 | 中兴通讯股份有限公司 | Link protection method, device, ingress node, and storage medium |
| CN112995026A (en) * | 2019-12-13 | 2021-06-18 | 中兴通讯股份有限公司 | Link protection method, device, entry node and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017181756A1 (en) | 2017-10-26 |
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