CN100546273C - The processing method of multiplex section loop chain road in ASON - Google Patents
The processing method of multiplex section loop chain road in ASON Download PDFInfo
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Abstract
The invention discloses a kind of processing method of link in ASON of MSP-ring, comprising: each node on the multiplex section ring is bound the link channel that belongs to different protection types in the multiplex section loop chain road that is connected the flow engineering link of many different protection attributes by the protection type; The state information of every flow engineering link obtaining is issued in network.The present invention has solved in existing ASON framework problems such as the processing on multiplex section loop chain road and state publications, has kept original function of multiplex section ring and characteristics, and ring topology is combined well with the MESH networking.
Description
Technical field
The present invention relates to the automatic switched optical network link administrative skill, be meant the processing method of a kind of multiplex section loop chain road in ASON especially.
Background technology
Optical-fiber network generally includes the Synchronous Optical Network (Sonet), wavelength network of SDH (Synchronous Digital Hierarchy) (SDH) that International Telecommunication Association (ITU-T) formulates, north America region etc., is being a kind of system based on centralized management traditionally.Adopt permanent connected mode to set up light between the initial network node and connect, establishment, maintenance and dismounting etc. that light connects all need manual intervention.Along with the continuous growth of network institute loaded service kind and number of services, only the optical network system that constitutes by permanent connected mode can not satisfy dynamically, networking demand flexibly.
In order to address this problem, ITU-T has proposed ASON (ASON) framework.The network construction form of ASON is based on netted (MESH) network topology, and it has increased a control plane for traditional optical-fiber network, and optical network node at first obtains the annexation of this node and other node by the discovery technique of link part; In control plane, utilize the Routing Protocol of Link State that this node and Link State are issued in network then, and the state publications of other network node in the reception network, each node in the final optical-fiber network can obtain a the description accurately " network map " of topology of network, comprises in " network map ": information such as node, link, resource.
When certain node in the optical-fiber network is connected by customer equipment or system administration request, utilize the information of " network map ", obtain a feasible path in conjunction with certain routing algorithm; The node that drives on this path by signaling protocol is set up interconnection again, up to destination node, thereby finishes the dynamic foundation that light connects.Connect at network owing to dynamically set up, remove or fault when causing that link circuit resource changes, node, link-state information that the corresponding light network node also needs issue in time to upgrade are to realize the synchronous again of " network map ".
In ASON, in order to solve under network control plane and the situation that transmits the complete physical separation in plane incidence relation between the two, ASON provides LMP Link Manager Protocol (LMP), and LMP Link Manager Protocol comprises on function: control channel management, connectivity of link checking, link attribute are correlated with and fault management.Control channel management realizes setting up in abutting connection with the control channel between network node and connects, and for other function of link management provides communication port, this process can be by finding or the configuration of management plane realizes automatically; The connectivity of link checking is by sending the method for in-band message, as: SDH can be by sending the J0 byte, check transmission link annexation,, find possible mistake connection situation for the both link ends network node carries out association to the coding of this link in abutting connection with network node; For existing the link-attached situation of massive parallel can be between two network nodes by these multilink bundlings being become single " flow engineering link (TE Link) ", so that alleviate the burden of the Routing Protocol of issue Link State, and link attribute coherence check link two side gusset convection current amount engineering links are consistent with the bundle relation that transmits between the link; Fault management provides the mechanism of consistent fault location.
In addition, in ASON for the link of sharing some physical resource, because in case shared resource breaks down, these links also will break down simultaneously, therefore be shared risk link group (SRLG, Shared Risk Link Group) with these multilink bundlings of sharing same physical resource usually.Make when some business carried out routing, avoid selecting the link among the same SRLG.Such as: in network recovery and protection, primary and backup route should guarantee the separation of physical resource, therefore in the selection course of this class business, just should note selecting the link of different SRLG.
The basic topology of conventional optical network is normally based on annular; wherein two-direction duplexing section guard ring (MSPRing) in the SDH net and the bidirectional line switched ring (BLSR) among the Sonet be because the specific energy carrying is more professional mutually with other ring protection mode, thereby all obtained application widely in each optical-fiber network aspect.In the present invention for convenience, abbreviate two-direction duplexing section guard ring and bidirectional line switched ring unification as the multiplex section ring, (Data Link) is called multiplex section loop chain road with the data link on the multiplex section ring.
The bandwidth resources that the multiplex section ring need be reserved half usually are used for protection, but its advantage is a network break down after, can recover professional in a short period of time.Though optical-fiber network has been introduced more intelligent to network node automatically, and the resource conservation that need reserve also still less, and the dynamic recovery time of existing automatic optical-fiber network is still longer, is difficult to satisfy the business recovery time requirement of 50ms.
Therefore, ASON also will keep the loop configuration in the network at present, thereby be faced with the situation of a ring topology and the coexistence of MESH topology.In this transition period, the physical topology of network is based on MESH, has set up a plurality of virtual rings again on this MESH topology for supporting traditional multiplex section ring business.This is the consideration of MESH network in defective aspect recovery time on the one hand, on the other hand also for the consideration of network smooth evolution in the ASON transient process.
The networking structure of this MESH and the coexistence of multiplex section ring; referring to shown in Figure 1; network node A-B-C-D-E-F between two subscriber equipmenies forms the MESH net; node A-B-C-D-E-F forms a virtual multiplex section ring again simultaneously; the ring uplink only uses the part time slot to be used for the protection of multiplex section ring, and other time slot belongs to unprotect.
Press the ITU-T suggestion G.841, protected, protection, that unprotect is not seized three classes that the passage of the link in the multiplex section ring can be divided into.In addition, the multiplex section ring has two fine and four fine two kinds of situations usually.Every optical fiber of two fiber complex section rings is used to carry the business transmission of a direction.Fig. 2 is the example of each path protection state on one two fiber complex section loop chain road, and this link is divided into 16 passages by time slot, and 1-3,5 wherein, the protection type of 8 passages are protected passages, carry protected business; 9-11,13,16 passages are protection passages, and each passage is protected the protected passage of front in order, can carry extra traffic on the protection passage, and these business will be seized when the protected channel failure of this multiplex section; 4,6,7,12,14,15 in other passage is the unprotect passage, can carry the unprotect business on the unprotect passage.
Similar two fibres of the situation of four fibres; just in each transmission direction two optical fiber are arranged; the protection relation of passage is not second half passage of half path protection under two fibres; but fine another fibre of protection; promptly wherein the passage on the working port is protected; passage on the protection port is then protected, and it is corresponding one by one that both press passage fully, wherein also unshielded passage can be arranged in every data link.
The suggestion and the draft of existing ITU and IETF ASON aspect are not done particular restriction to the processing method of multiplex section ring, by existing processing mode, the multiplex section ring also is taken as common MESH network processes in the network, has lost original function of multiplex section ring and advantage.
In addition; the existing general multiple protocols label protocol of IETF (GMPLS) is about handling multiplex section ring aspect; several like this link protection attributes in 3.2 joints " link protection type " in " supporting the route expansion (Routing Extensions in Support ofGeneralized MPLS; draft 6) of GMPLS ", are provided: extra traffic, unprotect, share protect, special-purpose 1:1, special-purpose 1+1, enhancing; wherein, share protect, special-purpose 1:1, special-purpose 1+1 and enhancing all belong to protected attribute.But the link on the existing multiplex section ring can not be included into the link of wherein any protection attribute simply.If for the multiplex section ring is introduced a kind of new " multiplex section ring " protection type; then the type also needs to carry the protection attribute list of passage; not only increased the flow of the Link State of Routing Protocol diffusion; but also need not support in the network node of ring topology also to understand the multiplex section ring, increased the complexity that procotol realizes.
In a word, prior art does not also have a kind of effective scheme that the multiplex section ring in the ASON is handled.
Summary of the invention
In view of this, main purpose of the present invention is to provide the processing method of a kind of multiplex section loop chain road in ASON, make multiplex section ring and ASON can be good at combining, both kept original function of multiplex section ring and characteristics, and need not again the former protocols having of ASON is too much revised.
The processing method of a kind of multiplex section loop chain road provided by the invention in ASON may further comprise the steps:
A) each node on the multiplex section ring is bound the flow engineering link that one or more has different protection attributes with the passage of different protection types in the multiplex section loop chain road that is connected by the protection type;
B) state information of every flow engineering link that issuing steps obtains in a) in ASON.
The described multiplex section ring of this method is the two-fibre two-way multi-section ring, comprises protected passage and protection passage in its multiplex section loop chain road;
Then the described link channel binding procedure of step a) is specially the protected passage in the described multiplex section loop chain road is bound the flow engineering link with protected attribute, and the protection passage on this multiplex section loop chain road is bound the flow engineering link with extra traffic attribute.
The described protected attribute of this method specifically is the share protect attribute.
The described multiplex section ring of this method is a four-fiber bidirectional multiplex section ring, comprises protected passage in the multiplex section loop chain road of an one direction, comprises the protection passage in equidirectional another multiplex section loop chain road;
Then the described link channel binding procedure of step a) is specially the flow engineering link of the protected passage in described article one multiplex section loop chain road being bound protected attribute; Protection passage in described another multiplex section loop chain road is bound the flow engineering link of extra traffic attribute.
The described protected attribute of this method is specially and strengthens the protection attribute.
Comprise further in the described multiplex section loop chain of this method road that unprotect do not seized passage;
Then described step a) comprises that further the unprotect on this multiplex section loop chain road is not seized passage binds the flow engineering link with unprotect attribute.
Described step a) of this method and b) between further comprise:
A11) end node on described multiplex section loop chain road by with in the control channel association that sends described flow engineering link sign set up request message to peer node;
A12) after peer node receives that request message is set up in this association, be the described flow engineering link sign of distributing and send current association to set up the originator node of request message be to set up relatedly between same the flow engineering link sign of distributing at this node, return association to described originator node and set up request responding message;
A13) after described originator node is received response message, this node be set up between described flow engineering link sign of distributing and the described peer node sign of distributing for this same flow engineering link related.
The described association of this method is set up in the request message and is comprised at least: described originator node sign, data link sign and the local sign for the flow engineering link distribution of originator node.
Control channel in the described band of this method is the expense J0 byte in the SDH frame structure.
Described step a) of this method and b) between further comprise:
A21) node of described flow engineering link one end is sent to the binding relationship information of link channel in the flow engineering link of this locality the peer node of this flow engineering link;
A22) after the peer node of this flow engineering link is received described binding relationship information, judge the local binding relationship flow engineering link consistent that whether has a link channel according to this binding relationship information with the binding relationship information of receiving, if, then return consistency check success response message to the originator node that sends current binding relationship information, otherwise, return the response message that consistency check is failed to described originator node.
The binding relationship information of link channel sends by the link summary message in the flow engineering link of this described this locality of method;
Described consistency check success response gathers response message by link and sends;
Described consistency check failure response gathers negative acknowledgment message by link and sends.
At least comprise in the binding relationship information of link channel in the flow engineering link of this described this locality of method: the sign of data link and bound channel position set under described originator node sign, the local sign of described originator node, this flow engineering link for described flow engineering link distribution;
At least comprise in the described consistency check success response message: sign that described peer node sign, peer node are distributed for this flow engineering link and described originator node are the sign of this flow engineering link distribution;
At least comprise in the response message of described consistency check failure: the sign that error code and described peer node distribute for this flow engineering link.
Further comprise in the binding relationship information of link channel in the flow engineering link of this described this locality of method: the protection attribute of described flow engineering link.
Further comprise after the described step a) of this method:
A31) the described flow engineering link that will belong to same data link of each node on the multiplex section ring is included into same risk shared link group;
A32) LIST SERVER of each node in network sends the log-on message of this risk shared link group;
A33) LIST SERVER is according to the current log-on message that receives, judge whether this risk shared link group is registered, if, then registered this risk shared link group id is back to the present node that sends log-on message, otherwise, be new logo of this risk shared link set of dispense, and this new logo is back to described present node.
The described log-on message of this method comprises: the sign that this node identification of described present node, local terminal port-mark, local terminal distribute for flow engineering link in this risk shared link group, present node are the sign that flow engineering link distributes in this risk shared link group about peer node sign, Peer-Port sign and the peer node of this risk shared link group.
The described step b) of this method specifically comprises: the Routing Protocol of the node at described flow engineering link two ends by Link State is published to other node in the network with the state information of this flow engineering link.
The described step b) of this method specifically comprises: the node at described flow engineering link two ends sends to distribution apparatus in the network with the state information of flow engineering link, by this distribution apparatus the state information of this flow engineering link is issued in network.
At least comprise in the described flow engineering link state information of this method: to be the described flow engineering link sign of distributing, this end node be risk shared link group id under the granularity of the sign of this flow engineering link distribution, this flow engineering link, maximum bandwidth, available bandwidth, this flow engineering link about the peer node of this flow engineering link to the local terminal of publisher node.
The described multiplex section ring of this method is two-direction duplexing section guard ring or bidirectional line switched ring or unidirectional multiplex section protective ring or one-way line rotating loop.
From above as can be seen; the processing method of multiplex section loop chain provided by the invention road in ASON; by the data link on the multiplex section ring is divided into many flow engineering links by its path protection type; make only corresponding a kind of link channel set of protecting type of every flow engineering link; thereby can give single protection attribute for every flow engineering link, transmit a kind of business.In ITU and the existing ASON framework of IETF, solved problems such as the processing on multiplex section loop chain road and state publications, kept original function of multiplex section ring and characteristics, ring topology is combined with the MESH networking is good.
Description of drawings
Fig. 1 is the schematic diagram of MESH and multiplex section ring mixed networking example;
Fig. 2 is the guard mode schematic diagram of each passage in the two fiber complex section ring uplink;
Fig. 3 is a preferred embodiment flow chart of the present invention;
Fig. 4 is " using the passage set " the subobject form schematic diagram in the DATA_LINK object in the preferred embodiment of the present invention.
Embodiment
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
The present invention is applied to ASON, and the topological form of this network is MESH and the multiplex section ring that mixes, and multiplex section ring wherein can be real network ring topology, also can be on the MESH topology virtual come out.
Prior art is supported many data link of equal value fully on Route Selection are tied to a flow engineering link with a certain protection attribute in ASON.The link protection attribute can be divided in the ASON: extra traffic, unprotect, protected, special-purpose 1:1, special-purpose 1+1, enhancing etc.Link on the corresponding multiplex section protective ring at protected passage, promptly can be supported protected business on the time slot, can transmit extra traffic on the protection time slot.But because a data link has only the part time slot to be used to transmit the business of certain protection attribute in the multiplex section ring, other time slot can transmit the business of other protection attribute again, therefore, is difficult to any flow engineering link is included on multiplex section loop chain road.
Solution of the present invention is the flow engineering link that the data link on the multiplex section ring is split as different protection attributes; every corresponding a kind of channel set of protecting type of flow engineering link, thus make ASON can adopt LMP Link Manager Protocol that multiplex section loop chain road is wherein handled easily.
Be example with two fiber complex section rings below, the embodiment preferable to the present invention is elaborated, referring to shown in Figure 3.
Step 301; each network node in the multiplex section ring topology is detecting after its place link has the topological structure of multiplex section ring; the link channel of protection type of the same race in the multiplex section loop chain road is bound a kind of flow engineering link of protecting attribute, so the data link on this multiplex section ring is split as many flow engineering links.
Data link then shown in Figure 2 can be split as three flow engineering links, and ginseng is shown in Table 1:
| Flow engineering link ID | The protection attribute | Bandwidth (is unit with the passage) | The respective channel set |
| 1 | Protected | 5 | 1-3、5、8 |
| 2 | |
5 | 9-11、13、16 |
| 3 | |
6 | 4、6、7、12、14、15 |
Table 1
Data link on the multiplex section ring is split into: 1) protected service traffics engineering link, the data channel protection type that comprises is protected passage, corresponding MSP-ring attribute is protected, is preferably the share protect attribute in the protected attribute for two fiber complex section rings; 2) extra traffic flow engineering link comprises the protection passage, and corresponding MSP-ring attribute is extra, can carry extra traffic; 3) unprotect flow engineering link comprises that unprotect do not seized passage, and corresponding MSP-ring attribute is a unprotect, can carry the unprotect business.Like this, the link channel of each protection type is all bound a kind of flow engineering link of protecting attribute, a kind of business of protecting type of flow engineering link carrying of every kind of protection attribute.
In addition, may there be the unprotect passage in some two fiber complex section loop chain road, and for this situation, the data link on two each direction of fiber complex section ring will be split into two of protected service traffics engineering link and extra traffic flow engineering links.
After new flow engineering link is set up; because the node at data link two ends is that the sign that same flow engineering link distributes may be different on the multiplex section ring, therefore, also needing usually is to set up association between the two end nodes sign of being distributed; like this, should include step 302-303.
Step 302, an end node of data link passes through the control channel in the band on the multiplex section ring, as: set up request message by the J0 byte to the association that peer node sends newly-built flow engineering link sign.
Described association is set up in the request message and is comprised: the sign that the originator node sign of the related request of this transmission, data link sign and originator node this locality are distributed for these three newly-built flow engineering links.
After step 303, peer node receive that request message is set up in association,, be to set up relatedly between the sign of its distribution and the originator node sign of distributing in this locality, return association to originator node then and set up request responding message at same flow engineering link.
Comprise in the described response message: the local sign of described peer node sign, data link sign and peer node for these three flow engineering links distribution.
Step 304 after originator node is received response message, is to set up association between every flow engineering link sign that originator node and peer node distributed in this locality equally.
After the related foundation of flow engineering link sign is finished, in order to ensure the network node at flow engineering link two ends to link channel being bound the binding relationship unanimity of flow engineering link, generally also to carry out the conforming inspection of binding relationship, comprise step 305-306.
Step 305, the network node of flow engineering link one end is initiated the link channel binding relationship consistency check request of flow engineering link, the binding relationship information of link channel in the flow engineering link in this locality is sent to the peer node of flow engineering link.
At least comprise in the described binding relationship information: send the local sign of sign, originator node of the originator node of this information, the sign of the affiliated data link of this flow engineering link, bound channel position set, and in binding relationship information, can also include the protection attribute of this flow engineering link for this flow engineering link distribution.
Step 306, after the peer node of flow engineering link is received binding relationship information, its link channel binding relationship with this locality is compared, judge whether this locality exists a flow engineering link, the binding relationship of its link channel and the binding relationship information of receiving are in full accord, if exist, then consistency check is passed through, and returns the consistency check success response to originator node; Otherwise, return the consistency check failure response to originator node.
In described consistency check success response, comprise at least: the sign that described peer node sign, peer node distribute for this flow engineering link, the sign that originator node distributes for this flow engineering link; At least comprise in the consistency failure response: the sign that error code, peer node distribute for this flow engineering link.
Because top these three flow engineering links of setting up are all relevant with same data link, should belong to same risk shared link group (SRLG), so present embodiment further is divided into same SRLG with these three flow engineering links, can avoid like this as: with many flow engineering links on the same multiplex section loop chain road when the routing, selected medium problem simultaneously.Therefore, also will comprise step 307-308.
Step 307, three flow engineering links in the network node multiplex section ring on the same data link are included into same risk shared link group, and the transmission of the LIST SERVER in network log-on message, and the risk shared link group of this new composition is registered.
Wherein, comprise at least in the described log-on message: the flow engineering link sign that the peer node sign of flow engineering link sign, the risk shared link group other end, Peer-Port sign, opposite end are distributed in this node identification, port-mark, the risk shared link group.Described LIST SERVER is the equipment that is used for registration service in the network that is arranged at, and network node can be concentrated log-on message is sent to LIST SERVER according to the IP address of this LIST SERVER.
Step 308, after LIST SERVER is received log-on message, judge the local log-on message that whether has existed about this risk shared link group,, then registered this risk shared link group id is returned to current network node if find the log-on message of existing this risk shared link group; Otherwise, note this log-on message, and return to current network node for new sign of this risk shared link set of dispense.
Here existing log-on message about this risk shared link group in the LIST SERVER of mentioning might be the node registration by this risk shared link group other end.
Step 309, the Routing Protocol of the network node of traffic engineering both link ends by Link State is published to other node in the network with the state information of newly-established flow engineering link on the multiplex section ring.
Like this, each network node on the multiplex section ring is all issued the flow engineering link state information of being set up in network, each node in the network according to " network map " of the information updating that is obtained self, is realized the synchronous again of " network map " again.
At least comprise in the described flow engineering link state information: the local terminal of publisher node is the flow engineering link sign of distributing, be SRLG sign etc. under the granularity, maximum bandwidth, available bandwidth, flow engineering link of the flow engineering link sign of distributing, flow engineering link about the peer node of flow engineering link.
In addition, the state information that also can replace with by the network node flow engineering link at flow engineering link two ends for step 309 sends to certain distribution apparatus in the network, by this distribution apparatus unification the state information of flow engineering link is issued in network.
Originator node recited above and peer node are not to refer in particular to, and stipulate arbitrarily for convenience, and any node on the multiplex section ring all can be used as originator node, and the node of the link other end is promptly as peer node like this.
Owing to a link is not split as the mechanism of many flow engineering links in the LMP Link Manager Protocol (draft) of existing IETF,, only needs to revise " link attribute the is relevant " function in the LMP Link Manager Protocol therefore if will address this problem.Wherein relate to adaptive to link summary message (LinkSummary).LinkSummary message generally is used for carrying the flow engineering link relevant information that is formed by many data link bindings traditionally, this message is made up of a TE_LINK object and at least one DATA_LINK object, carry among the TE_LINK by the flow engineering link sign, represent a flow engineering link.In order to make this message can represent to cut apart and the flow engineering link that obtains, need to give the DATA_LINK object to increase " using the passage set " subobject and carry the passage aggregate information that this flow engineering link uses among the present invention by data link.
" using the passage set " subobject form in the DATA_LINK object, referring to shown in Figure 4, wherein, " protection type " comprises 1 byte long, is the book object type; " length " comprises 1 byte long, is to be this subobject length of unit with the byte; " number of active lanes " comprises 2 byte longs, is the port number that flow engineering link uses the notebook data link; The back is the channel number tabulation, and each channel number tabulation comprises 2 byte lengths.Like this, need the information of transmitted traffic engineering link in the above in the reciprocal process between described node and node or the node and the network equipment, just can adopt the LinkSummary message of revising.
In addition, in the described binding relationship consistency checking of step 306 process, if the binding relationship information of peer node by carrying in the LinkSummary message of judging originator node and sending, binding relationship consistency checking to this flow engineering link passes through, then gather response message (LinkSummaryAck) to the originator node return link, notify the originator node flow engineering link to increase successfully, otherwise, send link and gather negative acknowledgment message (LinkSummaryNack), notify the originator node flow engineering link to increase failure, and send alert message simultaneously to the Network Management system.
Similar to the processing procedure on four fiber complex section loop chain road and two fibres.
When four fiber complex section loop chain road does not exist unprotect not seized passage; then in two data link in each transmission direction; article one, has only protected passage in the data link; have only the protection passage in equidirectional another data link, the former is as protected service traffics engineering link at this moment, and its protection attribute is protected; and be preferably and strengthen the protection attribute; the latter, as the extra traffic flow engineering link, its protection attribute is extra.
If every data link on four fiber complex section loop chain road also comprises unprotect and do not seized passage, then will this every unprotect in the data link do not seized passage and bound the unprotect flow engineering link, its protection attribute is a unprotect.
For four fiber complex section ring situation, also be that the flow engineering link on the data link is bound a risk shared link group.
The data link of mentioning in embodiments of the present invention is general corresponding with an optical fiber, but technical solution of the present invention equally also can be applicable to comprise in every optical fiber the situation of many data link, such as: in the occasion of wavelength division multiplexing, each wavelength channel in the optical fiber all can be used as a data link.
The multiplex section ring of mentioning in embodiments of the present invention is meant two-direction duplexing section guard ring or bidirectional line switched ring, and technical solution of the present invention also is applicable to the situation of unidirectional multiplex section protective ring or link switchover ring.
The present invention program's processing method is simply effective, for the multiplex section ring is laid a good foundation with combining of ASON.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (19)
1, the processing method of a kind of multiplex section loop chain road in ASON is characterized in that, may further comprise the steps:
A) each node on the multiplex section ring is bound the flow engineering link that one or more has different protection attributes with the passage of different protection types in the multiplex section loop chain road that is connected by the protection type;
B) state information of every flow engineering link that issuing steps obtains in a) in ASON.
2, method according to claim 1 is characterized in that, described multiplex section ring is the two-fibre two-way multi-section ring, comprises protected passage and protection passage in its multiplex section loop chain road;
Then the described link channel binding procedure of step a) is specially the protected passage in the described multiplex section loop chain road is bound the flow engineering link with protected attribute, and the protection passage on this multiplex section loop chain road is bound the flow engineering link with extra traffic attribute.
3, method according to claim 2 is characterized in that, described protected attribute specifically is the share protect attribute.
4, method according to claim 1 is characterized in that, described multiplex section ring is a four-fiber bidirectional multiplex section ring, comprises protected passage in the multiplex section loop chain road of an one direction, comprises the protection passage in equidirectional another multiplex section loop chain road;
Then the described link channel binding procedure of step a) is specially the flow engineering link of the protected passage in described article one multiplex section loop chain road being bound protected attribute; Protection passage in described another multiplex section loop chain road is bound the flow engineering link of extra traffic attribute.
5, method according to claim 4 is characterized in that, described protected attribute is specially and strengthens the protection attribute.
6, according to claim 2 or 4 described methods, it is characterized in that, comprise further in the described multiplex section loop chain road that unprotect do not seized passage;
Then described step a) comprises that further the unprotect on this multiplex section loop chain road is not seized passage binds the flow engineering link with unprotect attribute.
7, method according to claim 1 is characterized in that, described step a) and b) between further comprise:
A11) end node on described multiplex section loop chain road by with in the control channel association that sends described flow engineering link sign set up request message to peer node;
A12) after peer node receives that request message is set up in this association, be the described flow engineering link sign of distributing and send current association to set up the originator node of request message be to set up relatedly between same the flow engineering link sign of distributing at this node, return association to described originator node and set up request responding message;
A13) after described originator node is received response message, this node be set up between described flow engineering link sign of distributing and the described peer node sign of distributing for this same flow engineering link related.
8, method according to claim 7 is characterized in that, described association is set up in the request message and comprised at least: described originator node sign, data link sign and the local sign for the flow engineering link distribution of originator node.
9, method according to claim 7 is characterized in that, the control channel in the described band is the expense J0 byte in the SDH frame structure.
10, method according to claim 1 is characterized in that, described step a) and b) between further comprise:
A21) node of described flow engineering link one end is sent to the binding relationship information of link channel in the flow engineering link of this locality the peer node of this flow engineering link;
A22) after the peer node of this flow engineering link is received described binding relationship information, judge the local binding relationship flow engineering link consistent that whether has a link channel according to this binding relationship information with the binding relationship information of receiving, if, then return consistency check success response message to the originator node that sends current binding relationship information, otherwise, return the response message that consistency check is failed to described originator node.
11, method according to claim 10 is characterized in that, the binding relationship information of link channel sends by the link summary message in the flow engineering link of described this locality;
Described consistency check success response gathers response message by link and sends;
Described consistency check failure response gathers negative acknowledgment message by link and sends.
12, method according to claim 10, it is characterized in that, comprise at least in the binding relationship information of link channel in the flow engineering link of described this locality: the sign of data link and bound channel position set under described originator node sign, the local sign of described originator node, this flow engineering link for described flow engineering link distribution;
At least comprise in the described consistency check success response message: sign that described peer node sign, peer node are distributed for this flow engineering link and described originator node are the sign of this flow engineering link distribution;
At least comprise in the response message of described consistency check failure: the sign that error code and described peer node distribute for this flow engineering link.
13, method according to claim 12 is characterized in that, further comprises in the binding relationship information of link channel in the flow engineering link of described this locality: the protection attribute of described flow engineering link.
14, method according to claim 1 is characterized in that, described step a) and b) between further comprise:
A31) the described flow engineering link that will belong to same data link of each node on the multiplex section ring is included into same risk shared link group;
A32) LIST SERVER of each node in network sends the log-on message of this risk shared link group;
A33) LIST SERVER is according to the current log-on message that receives, judge whether this risk shared link group is registered, if, then registered this risk shared link group id is back to the present node that sends log-on message, otherwise, be new logo of this risk shared link set of dispense, and this new logo is back to described present node.
15, method according to claim 14, it is characterized in that described log-on message comprises: the sign that this node identification of described present node, local terminal port-mark, local terminal distribute for flow engineering link in this risk shared link group, present node are the sign that flow engineering link distributes in this risk shared link group about peer node sign, Peer-Port sign and the peer node of this risk shared link group.
16, method according to claim 1 is characterized in that, described step b) specifically comprises: the Routing Protocol of the node at described flow engineering link two ends by Link State is published to other node in the network with the state information of this flow engineering link.
17, method according to claim 1, it is characterized in that, described step b) specifically comprises: the node at described flow engineering link two ends sends to distribution apparatus in the network with the state information of flow engineering link, by this distribution apparatus the state information of this flow engineering link is issued in network.
18, method according to claim 1, it is characterized in that, comprise at least in the described flow engineering link state information: to be the described flow engineering link sign of distributing, this end node be risk shared link group id under the granularity of the sign of this flow engineering link distribution, this flow engineering link, maximum bandwidth, available bandwidth, this flow engineering link about the peer node of this flow engineering link to the local terminal of publisher node.
19, method according to claim 1 is characterized in that, described multiplex section ring is two-direction duplexing section guard ring or bidirectional line switched ring or unidirectional multiplex section protective ring or one-way line rotating loop.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100060210A CN100546273C (en) | 2004-02-25 | 2004-02-25 | The processing method of multiplex section loop chain road in ASON |
| PCT/CN2004/001474 WO2005083913A1 (en) | 2004-02-25 | 2004-12-20 | A processing method for multiplexing segment ring link in automatic exchange optical network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100060210A CN100546273C (en) | 2004-02-25 | 2004-02-25 | The processing method of multiplex section loop chain road in ASON |
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| Publication Number | Publication Date |
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| CN1661984A CN1661984A (en) | 2005-08-31 |
| CN100546273C true CN100546273C (en) | 2009-09-30 |
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| CNB2004100060210A Expired - Lifetime CN100546273C (en) | 2004-02-25 | 2004-02-25 | The processing method of multiplex section loop chain road in ASON |
Country Status (2)
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| CN (1) | CN100546273C (en) |
| WO (1) | WO2005083913A1 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384155C (en) * | 2006-01-14 | 2008-04-23 | 华为技术有限公司 | Client layer chain-link automatic finding method and apparatus |
| CN101155133B (en) * | 2006-09-26 | 2011-04-20 | 华为技术有限公司 | Processing method for information of flux project periodic line |
| CN101155064A (en) * | 2006-09-26 | 2008-04-02 | 华为技术有限公司 | Processing method for periodic line resource information of traffic engineering |
| CN101459527B (en) * | 2007-12-10 | 2011-10-05 | 华为技术有限公司 | Method, device and system for checking data links and publishing the same as flow engineering links |
| CN101459565B (en) * | 2007-12-13 | 2012-06-27 | 华为技术有限公司 | Recovery method, device and network node for multiplexing protection service |
| CN101325560B (en) * | 2008-07-22 | 2011-12-28 | 中兴通讯股份有限公司 | Method and apparatus for generating link |
| CN101646105B (en) | 2008-08-07 | 2013-08-07 | 华为技术有限公司 | Method, system and equipment for service recovery |
| CN101360348B (en) * | 2008-08-25 | 2012-02-22 | 中兴通讯股份有限公司 | Establishing method for virtual control channel between head and tail node of service |
| US9042395B2 (en) | 2009-05-01 | 2015-05-26 | Ciena Corporation | E-spring support of Ethernet protection |
| CN101888573B (en) * | 2009-05-15 | 2013-03-20 | 中兴通讯股份有限公司 | Method and system for automatically discovering resource state between adjacent nodes |
| CN102014040B (en) * | 2009-09-07 | 2012-10-03 | 华为技术有限公司 | Method and device for issuing traffic engineering properties |
| CN102136898B (en) * | 2010-01-21 | 2016-09-28 | 中兴通讯股份有限公司 | The implementation method of protection group nesting, the method and system of Ethernet protection switching |
| CN102142976B (en) * | 2010-02-01 | 2015-04-01 | 中兴通讯股份有限公司 | Method and system for shared protection of protection domain of mesh network |
| CN102238056B (en) * | 2010-04-30 | 2014-03-12 | 中兴通讯股份有限公司 | Automatic ring network protection topology structure discovery method and device |
| CN102638404B (en) * | 2012-04-09 | 2014-07-16 | 南京邮电大学 | Optical network protection resource allocation method based on service differentiation |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1126331C (en) * | 1999-11-04 | 2003-10-29 | 深圳市中兴通讯股份有限公司 | Automatically protected switching method and device in high rate SDH loop |
| CN100346588C (en) * | 2001-10-29 | 2007-10-31 | 上海贝尔有限公司 | System of dual fibers two-way channel/multiplexing segment rotating loop for wavelength division multiplexing optical network |
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2004
- 2004-02-25 CN CNB2004100060210A patent/CN100546273C/en not_active Expired - Lifetime
- 2004-12-20 WO PCT/CN2004/001474 patent/WO2005083913A1/en active Application Filing
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| WO2005083913A1 (en) | 2005-09-09 |
| CN1661984A (en) | 2005-08-31 |
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