CN101039222A - Warning information transmission method, apparatus and network equipment - Google Patents

Warning information transmission method, apparatus and network equipment Download PDF

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Publication number
CN101039222A
CN101039222A CNA2007100277086A CN200710027708A CN101039222A CN 101039222 A CN101039222 A CN 101039222A CN A2007100277086 A CNA2007100277086 A CN A2007100277086A CN 200710027708 A CN200710027708 A CN 200710027708A CN 101039222 A CN101039222 A CN 101039222A
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warning information
alarm
network equipment
network
lower floor
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CN100499527C (en
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文远癸
张华琛
邓雄
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Abstract

The invention discloses an alarm information transmitting method, which achieves the alarm information transmitting between current layer and lower layer of VPLS that adopts different protocol via the format conversion of the alarm information, i.e. the alarm information of the lower layer network can be transmitted to other network devices in current layer through the alarm format conversion, also, the the alarm information of the current layer network can be transmitted to network devices in lower layer through the alarm format conversion. The invention further discloses an alarm information transmitting device, and a network device thereof. The invention realizes the OAM function from end to end in multilayer VPLS netwrok.

Description

A kind of warning information transmission method, device and the network equipment
Technical field
The present invention relates to the ethernet communication field, relate to a kind of warning information transmission method, device and the network equipment particularly.
Background technology
Ethernet technology has low cost, characteristics such as easy to use, in local area network technology of today, occupied most of share, at present progressively to metropolitan area network and wide area network development, such as making up the ether transmission network, Metro Ethernet (Metro Ethernet) technology is just becoming emerging and important metropolitan area network solution.Virtual private local business (Virtual Private LAN Service, VPLS) technology belongs to two layer virtual private networks (Layer2 Virtual Private Network, L2VPN), be exactly based on multiprotocol label switching (MultipleProtocol Label Switch, transparent transmission user's Ethernet data on network MPLS) or the IP network.
Present network configuration generally is layering, classification, as shown in Figure 1, the end user obtains corresponding service support to service supplier purchase business, and service supplier needs the network provider to guarantee the normal operation of network, promptly needs to guarantee the connectedness of physical link.In the real network environment, operator generally all adopts the network topology of hierarchical classification, promptly presses Access Layer, convergence-level, core layer networking.The networking of two-layer classification VPLS is used schematic diagram as shown in Figure 2, one deck is pseudo-line (the Pseudo Wire of the core of VPLS, PW), promptly by the provider edge equipment of network-oriented (Network-facing Provider ' s Edge Equipment, the NPE) core layer of Zu Chenging is shown among Fig. 21, one deck is pseudo-line (the Pseudo Wire of the access of expansion, PW) or virtual connections, i.e. the convergence-level of being made up of user oriented provider edge equipment is shown among Fig. 22.
The manageability of traditional ethernet, maintainable relatively poor, because range of application mainly concentrates on enterprise network, generally manage by the availability of the technology more than the IP layer to Ethernet, as Simple Network Management Protocol (Simple Network Management Protocol, SNMP).Along with Ethernet enters MAN and Wide Area Network becomes the Carrier Ethernet technology, need to improve Operations, Administration and Maintenance (Operation, Administration and Maintenance, the OAM) ability of Ethernet.For the user, VPLS is a kind of business that Virtual network operator provides, need (Service Level Agreement SLA) verifies, such as time delay, shake, network connectivty etc. to this professional grade of service contract by Ethernet OAM.In the middle of VPLS networking shown in Figure 2 is used, need each layer of network that the Ethernet OAM ability can both be provided.Suppose that client device CE1, CE10, CE2, CE3 among Fig. 2 belong to certain client's VPLS service access equipment, so this client just need can by Ethernet OAM verify these client devices (Customer ' s Equipment, key network parameters such as the connectedness CE), time delay, shake, require network alarm information in time to announce to miscellaneous equipment simultaneously, such as, if there is fault in the link between UPE1 and the CE1, UPE1 just should be able to announce this chain alarming information to CE10, NPE1 so.Equally, if the pseudo-line of the VPLS between UPE1 and the NPE1 exists fault also will announce to CE1, CE10, NPE2, NPE3.Ether OAM ability generally include connectivity checks (Connection Check, CC), loopback (LoopBack, LB), path trace (Link Trace, LT).
In level VPLS network configuration, core PW network with converge the PW network and may belong to different Virtual network operators, therefore Virtual network operator if desired to the provider edge equipment in the own network (Provider ' s Edge Equipment, PE) realize the OAM ability, must transmit OAM information mutually between the heterogeneous networks so, could guarantee the end-to-end OAM ability of service supplier.But in the prior art, the Internet engineering duty group (Internet Engineering Task Force, IETF), Pseudo Wire Emulation Edge-to-Edge (Pseudo Wire Emulation Edge-to-Edge, PWE3), L2VPN, relevant criterion such as VPLS only provide the point-to-point OAM between network provider's equipment mechanism, these mechanism can only be suitable in the non-hierarchical network between the PE and PE, alarm between PE and the CE suppresses, as PWE3 VCCV, by " IP Internet Control Message Protocol echo test (Internet Control Messages Protocol Ping; ICMP Ping) ", " label switched path echo test (Label Switch Path Ping; LSP Ping) ", detection techniques such as " two-way forwarding detect (Bidirectional Forwarding Detection; BFD) " can detect the pseudo-line states between the PE, and these OAM information can be delivered to CE equipment.In level VPLS network shown in Figure 2, between UPE and the NPE, all have the OAM alarming mechanism of point-to-point between NPE and the NPE, but the OAM warning information between UPE and the NPE can not be communicated to other NPE equipment, the OAM warning information between same NPE and the NPE also can't be delivered to other user-end provider edge.
Summary of the invention
Embodiment of the invention technical problem to be solved is, a kind of network equipment, warning information transmission method and device are provided, and makes the warning information in the level VPLS network can cross over the level transmission.
In order to solve the problems of the technologies described above, the embodiment of the invention has proposed a kind of warning information transmission method, is used for transmitting warning information at level virtual private local business network, and this method comprises:
This layer network device generates the warning information of corresponding first form according to the message situation of receiving;
Described layer network device changes into the warning information of second form with the warning information of described first form, and lower floor's network equipment that the warning information of described second form is sent to other this layer network device or is connected with described layer network device.
Correspondingly, the embodiment of the invention provides a kind of warning information transfer device, and it is positioned on the level virtual private local business network equipment, is used for transmitting warning information at level virtual private local business network, and this device comprises:
The alarm generation unit, the message situation that is used for receiving according to described layer network device produces the warning information of corresponding first form;
Control unit is used for described alarm format conversion unit is sent the conversion order, and according to the expectant control strategy described alarm transmitting element is issued the transmission order;
Alarm format conversion unit, be used for the warning information of first form being changed into the warning information of second form according to the conversion order of described control unit, and sending it to described alarm transmitting element, the warning information of described first form is obtained or is generated by described alarm generation unit by the alarm receiving element;
The alarm transmitting element is used for the transmission order according to described control unit, and described warning information is sent to other network equipment of this layer of described transmission order appointment or the lower floor's network equipment that is connected with the described network equipment.
The embodiment of the invention also provides a kind of network equipment, and it is arranged on the network equipment of level virtual private local business network, and this equipment comprises:
The alarm generation unit, the message situation that is used for receiving according to the described network equipment produces the warning information of corresponding first form;
Control unit is used for described alarm format conversion unit is sent the conversion order, and according to the expectant control strategy described alarm transmitting element is issued the transmission order;
Alarm format conversion unit, be used for the warning information of first form being changed into the warning information of second form according to the conversion order of described control unit, and sending it to described alarm transmitting element, the warning information of described first form is obtained or is generated by described alarm generation unit by the alarm receiving element;
The alarm transmitting element is used for the transmission order according to described control unit, and described warning information is sent to other network equipment of this layer of described transmission order appointment or the lower floor's network equipment that is connected with the described network equipment.
A kind of warning information transmission method and device thereof that the embodiment of the invention provides, by warning information is carried out format conversion, make between this layer network of VPLS of adopting different agreement and lower floor's network and can carry out the warning information transmission, promptly, the warning information of lower floor's network can be delivered to other this layer network device through the alarm format conversion, equally, the warning information of this layer network can be delivered to lower floor's network equipment through the alarm format conversion.By this method and device thereof, realized in the level VPLS network OAM(Operation Administration Maintenance) end to end.
Description of drawings
Fig. 1 is the schematic network structure of a kind of classification in the prior art;
Fig. 2 is the networking schematic diagram of a kind of level VPLS network in the prior art;
Fig. 3 is an embodiment schematic flow sheet of warning information transmission method of the present invention;
Fig. 4 is the idiographic flow schematic diagram of step S3002 among Fig. 3;
Fig. 5 is the idiographic flow schematic diagram of step S4002 among Fig. 4;
Fig. 6 is the idiographic flow schematic diagram of step S4003 among Fig. 4;
Fig. 7 is that the functional module of warning information transfer device one embodiment of the present invention is formed schematic diagram;
Fig. 8 is that the functional module of the network equipment one embodiment of the present invention is formed schematic diagram.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the invention is done further in detail clearly explanation.
Fig. 3 shows the embodiment schematic flow sheet of warning information transmission method among the present invention, may further comprise the steps:
Step S3001: this layer network device generates the warning information of corresponding first form according to the message situation of receiving.
In networking as shown in Figure 2, VPLS is divided into two-level network: core layer and convergence-level.This layer network is not limited to core layer in the embodiment of the invention, and its lower floor's network also is not limited to convergence-level, and for ease of explanation, the embodiment of the invention is that example is launched explanation with core layer and convergence-level.
Core layer can adopt different technology and agreement with convergence-level.From the realization technology of present VPLS, core layer can adopt MPLS (signaling is LDP or BGP), IP (signaling is L2TPv3) technology and corresponding OAM technology, and convergence-level can adopt QinQ, MPLS, L2TPv3 technology and corresponding OAM technology.Technology that adopts and defects detection mechanism are different, and the form of its warning information also is not quite similar.Core layer equipment NPE is after receiving message, if its testing mechanism detects defective, then generates the warning information of corresponding format according to the OAM agreement that adopts.
The warning information of described first form may be the warning information of this layer network, i.e. there is fault in connection between the NPE, also may be the warning information of lower floor's network, and promptly there is fault in being connected between NPE and the UPE.
Step S3002: described layer network device changes into the warning information of second form with the warning information of described first form, and the lower floor's network equipment that the warning information of described second form is sent to other this layer network device or is connected with described layer network device according to the expectant control strategy.
Because the technology difference that adopts between this layer network and the lower floor's network, also there is very big-difference in corresponding OAM technology, wants warning information is striden layer transmission, must carry out could realizing after the format conversion to warning information.In VPLS, NPE changes into the warning information of second form to the warning information of first form, then the warning information of second form is passed to the NPE or the UPE of appointment.That is, the warning information of this layer network is passed to lower floor's network through format conversion, the warning information of lower floor's network is passed to this layer network through format conversion.By this method, that has realized the alarm of OAM in the level VPLS network strides the level transmission.
As a kind of execution mode, NPE can carry out format conversion again with it after receiving this warning information, pass to coupled UPE then, promptly, also comprising step S3003 behind the step S3002: after described other this layer network device was received the warning information of described second form, the warning information that converts it into the 3rd form sent to and is attached thereto the lower floor's network equipment that connects.
Certainly, first form here is identical with the 3rd form in some cases, for example, the agreement that adopts between the agreement that adopts between the NPE among the step S3001 and its UPE and the NPE among the step S3003 and its UPE is identical, and the PW between the NPE among the step S3001 and its UPE is when defective occurring.
In step S3002, the warning information of described second form adopts any form to depend on the OAM agreement that adopts between the purpose PE of warning information and the source PE.Therefore, determine earlier that purpose PE could judge the form that will send alarm then.Purpose PE determines to depend on control strategy.In the present invention, described control strategy refers to: the warning information of lower floor's network will pass to all other these layer network devices and the lower floor's network equipment in the network, and the warning information of this layer network only passes to corresponding lower floor's network equipment.Therefore, when warning information occurring, to judge the type of this warning information earlier, see that it is the warning information of this layer network or the warning information of lower floor's network.As a kind of execution mode, the concrete implementing procedure schematic diagram of step S3002 may further comprise the steps as shown in Figure 4:
Step S4001: whether the warning information of judging described first form is the warning information of lower floor's network, if judged result is for being, and execution in step S4002 then, otherwise, execution in step S4003.
The warning information of described first form may be the warning information of this layer network, also may be the warning information of lower floor's network, carries out next step according to concrete control strategy again by judging its type.
Step S4002: the warning information that the warning information of described first form is changed into second form sends to other this layer network device in the level virtual private local business network.
Step S4003: the warning information that the warning information of described first form is changed into second form sends to and is attached thereto the lower floor's network equipment that connects.
As a kind of execution mode, the concrete implementing procedure schematic diagram of step S4002 and step S4003 may further comprise the steps respectively respectively as Fig. 5, shown in Figure 6:
Step S5001: inquire about the protocol type between described layer network device and described other this layer network device.
In level VPLS network shown in Figure 2, be equivalent to the protocol type between core layer network equipment inquiry itself and other core layer network equipment.For example, NPE1 inquires about the protocol type between itself and NPE2 and the NPE3.
Step S5002: the warning information of described first form is changed into the warning information of second form, and the warning information of described second form is corresponding with described protocol type.
Step S5003: the warning information of described second form is sent to described other this layer network device.
Step S6001: inquire about the protocol type between described layer network device and the described coupled lower floor's network equipment.
In level VPLS network shown in Figure 2, be equivalent to core layer network equipment inquiry itself with and its convergence-level network equipment of being connected between protocol type.For example, NPE1 inquires about the protocol type between itself and the UPE1.
Step S6002: the warning information of described first form is changed into the warning information of second form, and the warning information of described second form is corresponding with described protocol type.
Step S6003: the warning information of described second form is sent to the described lower floor network equipment.
Here, we suppose to adopt the QinQ technology between UPE and the NPE and use Connectivity Fault Management (Connectivity Fault Management, CFM) carry out defects detection, adopt MPLS (signaling is LDP) technology between NPE and the NPE and use BFD to carry out defects detection.
BFD is a kind of fast detection mechanism, it is applied to PW just goes up and can detect the defective of PW and produce alarm in the millisecond rank, up-to-date ietf standard draft has defined the message format of BFD at present, " Diag " field wherein can be used to announce the OAM warning information, and draft has defined the following diagnosis sign indicating number of " Diag " field value at present:
0--No Diagnostic (not having diagnosis)
1--Control Detection Time Expired (control detection is overtime)
2--Echo Function Failed (echo disabler)
3--Neighbor Signaled Session Down (neighbours' signal session failed)
4--Forwarding Plane Reset (Forwarding plane is restarted)
5--Path Down (path failure)
6--Concatenated Path Down (associated path inefficacy)
7--Administratively Down (managerial path failure)
8--Reverse Concatenated Path Down (reverse correlation path failure)
9-31--Reserved for future use (reservation)
Institute of Electrical and Electric Engineers (Institute of Electrical and Electronics Engineers, IEEE) 802.1ag CFM provides fault detect means end to end for Ethernet, the Ethernet OAM mechanism of supporting comprises connectivity checks (Connectivity Check, CC), loopback detection, link tracing.Can initiatively send the CC message packet after the MEP configuration CFM function.
The CC message packet adopts known multicast address, will be by multicast replication, and all safeguard that (Maintenance association End Point MEP) can receive the CC message packet to end node, but need not response in the territory.MEP will set up and safeguard MEP CC message database after receiving the CC message packet of other equipment, when not receiving the CC message of certain MEP continuous 3 times, think that there is fault in this MEP to the link of oneself.MEP can produce corresponding alarm according to the reason of fault after detecting fault.Alarm is divided into 4 kinds of forms altogether:
The interconnection alarm: the MEP on the bridge receives continuity check message (Continuity CheckMessage, CCM) behind the message, some configuration informations that need the MEP of opposite end relatively whether with just the same (CCM has carried the configuration information of opposite end) of local terminal configuration.If different, then report the interconnection alarm.
CC loses alarm: the MEP on the bridge (3.5 times CC sends blanking time) in the specific time does not receive the CC message of arbitrary far-end MEP, and then newspaper is lost alarm.
Fault alarm: after the MEP on the bridge received the CC message, whether the MEP that needs to compare in the message was complementary with the far-end MEP that disposes (contain CC and send the interval).If do not match, the mistake that then reports an error alarm.
(Remote Defect Indication, RDI) alarm: the far-end MEP that the local terminal MEP on bridge can not receive it issues its CCM message, and this MEP will be with the position, RDI position in the CCM message that sends so in the remote bug indication.After other MEP on the bridge receives the CCM message of set, report RDI alarm.
The networking application drawing of supposing level VPLS as shown in Figure 2.When UPE1 when there is defective in the QinQ virtual connections of NPE1, the CC message packet of UPE1 will exist to be lost, and will produce alarm after CFM detects, this alarm belongs to lower floor's network alarm, its transmittance process in level VPLS network is as follows:
1) CFM on the NPE1 finds that the CC message packet of UPE1 exists to lose and will produce CC and lose alarm;
2) NPE1 knows that by converging PW and core PW binding relationship this NPE1 is BFD to the OAM agreement of NPE2, NPE3, so being lost alarm, this CC changes into the BFD alarm, be about in the BFD message that the Diag field is set to 6 (Concatenated Path Down, associated path lost efficacy) and NPE2 and NPE3 are given in announcement;
3) NPE2 receives the CC message packet that needs to carry out this information is changed into CFM behind the BFD warning information that NPE1 produces, and gives UPE2 with RDI bit set in the CC message packet and announcement.
Equally, when there was fault in the pseudo-line of the VPLS between NPE3 and the NPE1, the transmittance process of this core layer alarm in level VPLS network was as follows:
1) so finding NPE1, NPE3 loses generation BFD alarm to the BFD message of oneself;
2) NPE3 is by core PW with converge binding relationship between the PW and know that oneself is CFM to the OAM alarm agreement of UPE2, so receive that needing to convert it into CFM CC message packet after the BFD alarm suppresses announces to UPE2.
Here, if the regulation of the alarming mechanism between NPE3 and the NPE1 needs to give the notice opposite end this alarm loopback when finding alarm, then NPE3 also will carry out following steps:
3) the BFD message Diag field that sends to NPE1 is set to 1 (Control Detection TimeExpired, control detection is overtime).
After NPE1 receives this alarm notification, by core PW with converge binding relationship between the PW and know that oneself is CFM to the OAM alarm agreement of UPE1, so receive that needing to convert it into CFM CC message packet after the BFD alarm suppresses announces to UPE1, is about to the RDI bit set in the CC message packet.
In sum,, can in level VPLS, realize layer transmission of striding of warning information, thereby guarantee the end-to-end OAM(Operation Administration Maintenance) of service supplier by warning information transmission method of the present invention.
Correspondingly, the present invention also provides a kind of warning information transfer device, it is positioned on the level virtual private local business network equipment, is used for transmitting warning information at level virtual private local business network, and this functional module of installing a kind of execution mode is formed schematic diagram as shown in Figure 7.It includes alarm generation unit 1, alarm transmitting element 2, alarm receiving element 3, also includes control unit 4 and alarm format conversion unit 5.
The message situation that alarm generation unit 1 is used for receiving according to the network equipment produces the warning information of corresponding first form.
During alarm that control unit 4 is used for receiving first form when described alarm receiving element or described alarm generation unit described alarm format conversion unit 5 issued when generating the warning information of first form and transforms order, and be used for alarm transmitting element 2 being issued and send order according to the expectant control strategy.
Alarm format conversion unit 5 is used for according to the conversion order of described control unit 4 warning information of first form being changed into the warning information of second form, and sending it to described alarm transmitting element 2, the warning information of described first form is obtained by alarm receiving element 3 or is generated by described alarm generation unit 1.
Alarm transmitting element 2 is used for the transmission order according to control unit 4, and described warning information is sent to other network equipment of this layer that sends the order appointment or the lower floor's network equipment that is connected with the described network equipment.
Control unit 4 also includes alarm type judging unit 41, is used to judge whether the warning information that alarm generation unit 1 is generated is the warning information of lower floor's network, and notifies control unit 4 with judged result.Control unit 4 receives described judged result, and transforms order and send order according to the expectant control policy distribution.
As a kind of execution mode, this control strategy can be specially: if judged result is for being, then alarm format conversion unit 5 is issued and transform order, and alarm transmitting element 2 issued send order, control alarm transmitting element 2 sends to other this layer network device in the level virtual private local business network with the warning information of described second form; Otherwise, alarm format conversion unit 5 is issued the conversion order, and alarm transmitting element 2 issued send order, control alarm transmitting element 2 sends to the network equipment UPE of lower floor that is connected with the nucleus equipment NPE at this alarm transfer device place with the warning information of described second form.
Control unit 4 also includes alarm and receives response unit 42, be used for when alarm receiving element 3 is received the warning information of first form, alarm format conversion unit 5 is issued the conversion order, and alarm transmitting element 2 issued send order, control its warning information and send to the lower floor's network equipment that is connected with this layer network device at this alarm transfer device place described second form.
As a kind of execution mode, alarm format conversion unit 5 may further include protocols having type extraction unit 51, information extraction unit 52, conversion unit 53.Protocol type extraction unit 51 is used to extract the protocol type of the LA Management Room of the NPE at this warning information transfer device place and described conversion order appointment, and with described protocol type notice conversion unit 53.The network equipment of described conversion order appointment accuses that system unit 4 sends destination network equipment according to the determined warning information of the judged result of alarm type judging unit 41.Information extraction unit 52 is used for extracting the warning information of described first form from alarm generation unit 1 or alarm receiving element 3, and sends conversion unit 53 to.Conversion unit 53 is used for warning information with described first form and changes into warning information with corresponding second form of described protocol type, and sends alarm transmitting element 2 to.
Correspondingly, the invention provides a kind of network equipment, it is arranged in level virtual private local business network.The functional module of this network equipment one embodiment is formed schematic diagram as shown in Figure 8, and this apparatus embodiments includes alarm generation unit 1, alarm transmitting element 2, alarm receiving element 3, also includes control unit 4 and alarm format conversion unit 5.
The message situation that alarm generation unit 1 is used for receiving according to this network equipment produces the warning information of corresponding first form.
Control unit 4 is used for when described alarm receiving element is received the warning information of first form or described alarm generation unit issues described alarm format conversion unit 5 when generating the warning information of first form and transforms order, and is used for according to the expectant control strategy alarm transmitting element 2 being issued and sends order.
Alarm format conversion unit 5 is used for according to the conversion order of described control unit 4 warning information of first form being changed into the warning information of second form, and sending it to described alarm transmitting element 2, the warning information of described first form is obtained by alarm receiving element 3 or is generated by described alarm generation unit 1.
Alarm transmitting element 2 is used for the transmission order according to control unit 4, and described warning information is sent to other network equipment of this layer that sends the order appointment or the lower floor's network equipment that is connected with the described network equipment.
The above-mentioned network equipment provided by the invention, warning information transmission method and device, by warning information is carried out format conversion, make between this layer network of VPLS of adopting different agreement and lower floor's network and can carry out the warning information transmission, promptly, the warning information of lower floor's network can be delivered to other this layer network device through the alarm format conversion, equally, the warning information of this layer network can be delivered to lower floor's network equipment through the alarm format conversion.That is, realized in the level VPLS network OAM(Operation Administration Maintenance) end to end.
Above disclosed only is preferred embodiment of the present invention, can not limit the present invention's interest field certainly with this, and therefore the equivalent variations of doing according to claim of the present invention still belongs to the scope that the present invention is contained.

Claims (11)

1, a kind of warning information transmission method is used for transmitting warning information at level virtual private local business network, it is characterized in that this method comprises:
This layer network device generates the warning information of corresponding first form according to the message situation of receiving;
Described layer network device changes into the warning information of second form with the warning information of described first form, and lower floor's network equipment that the warning information of described second form is sent to other this layer network device or is connected with described layer network device.
2, warning information transmission method as claimed in claim 1 is characterized in that, also comprises:
After described other this layer network device was received the warning information of described second form, the warning information that converts it into the 3rd form sent to and is attached thereto the lower floor's network equipment that connects.
3, warning information transmission method as claimed in claim 1 or 2, it is characterized in that, described layer network device changes into the warning information of second form with the warning information of described first form, and the warning information of described second form sent to other this layer network device or lower floor's network equipment of being connected with described layer network device is specially:
A, judge whether the warning information of described first form is the warning information of lower floor's network, if judged result is for being, execution in step b then, otherwise, execution in step c;
B, the warning information that the warning information of described first form is changed into second form send to other this layer network device in the level virtual private local business network;
C, the warning information that the warning information of described first form is changed into second form send to the lower floor's network equipment that is connected with described layer network device.
4, warning information transmission method as claimed in claim 3 is characterized in that, described step b specifically may further comprise the steps:
B1, inquire about the protocol type between itself and described other this layer network device;
B2, the warning information of described first form is changed into the warning information of second form, the warning information of described second form is corresponding with described protocol type;
B3, the warning information of described second form is sent to described other this layer network device.
5, warning information transmission method as claimed in claim 3 is characterized in that, described step c specifically may further comprise the steps:
Protocol type between c1, described layer network device of inquiry and the described coupled lower floor's network equipment;
C2, the warning information of described first form is changed into the warning information of second form, the warning information of described second form is corresponding with described protocol type;
C3, the warning information of described second form is sent to the described lower floor network equipment.
6, a kind of warning information transfer device, it is positioned on the network equipment of level virtual private local business, it is characterized in that, and described device comprises:
The alarm generation unit, the message situation that is used for receiving according to the described network equipment produces the warning information of corresponding first form;
Control unit is used for described alarm format conversion unit is sent the conversion order, and according to the expectant control strategy described alarm transmitting element is issued the transmission order;
Alarm format conversion unit, be used for the warning information of first form being changed into the warning information of second form according to the conversion order of described control unit, and sending it to described alarm transmitting element, the warning information of described first form is obtained or is generated by described alarm generation unit by the alarm receiving element;
The alarm transmitting element is used for the transmission order according to described control unit, and described warning information is sent to other network equipment of this layer of described transmission order appointment or the lower floor's network equipment that is connected with the described network equipment.
7, warning information transfer device as claimed in claim 6, it is characterized in that, described control unit also includes the alarm type judging unit, be used to judge whether the warning information that described alarm generation unit is generated is the warning information of lower floor's network, and notify described control unit judged result.
8, warning information transfer device as claimed in claim 6, it is characterized in that, described control unit also includes alarm and receives response unit, be used for when described alarm receiving element is received the warning information of first form, described alarm format conversion unit is issued the conversion order, and described alarm transmitting element issued send order, control its warning information and send to the lower floor's network equipment that is connected with this layer network device at this alarm transfer device place described second form.
As claim 6 or 7 described warning information transfer devices, it is characterized in that 9, described alarm format conversion unit further includes protocol type extraction unit, information extraction unit, conversion unit, wherein:
Described protocol type extraction unit is used to extract this layer network device at this warning information transfer device place and the protocol type of the LA Management Room of described conversion order appointment, and notifies described conversion unit with described protocol type;
Described information extraction unit is used for extracting the warning information of described first form from described alarm generation unit or alarm receiving element, and sends described conversion unit to;
Described conversion unit is used for warning information with described first form and changes into warning information with corresponding second form of described protocol type, and sends described alarm transmitting element to.
10, warning information transfer device as claimed in claim 9 is characterized in that, the network equipment of described conversion order appointment refers to that described control unit sends destination network equipment according to the determined warning information of the judged result of described alarm type judging unit.
11, a kind of network equipment, it is arranged in level virtual private local business network, it is characterized in that this equipment includes:
The alarm generation unit, the message situation that is used for receiving according to the described network equipment produces the warning information of corresponding first form;
Control unit is used for described alarm format conversion unit is sent the conversion order, and according to the expectant control strategy described alarm transmitting element is issued the transmission order;
Alarm format conversion unit, be used for the warning information of first form being changed into the warning information of second form according to the conversion order of described control unit, and sending it to described alarm transmitting element, the warning information of described first form is obtained or is generated by described alarm generation unit by the alarm receiving element;
Described alarm transmitting element is used for the transmission order according to described control unit, and described warning information is sent to other network equipment of this layer of described transmission order appointment or the lower floor's network equipment that is connected with the described network equipment.
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