CN101997728B - A kind of checkout gear of Ethernet localised protection and method - Google Patents
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Abstract
The invention discloses a kind of checkout gear of Ethernet localised protection, in this device, configuration management element, for receiving order or the parameter of exterior arrangement, and sends to fault detection unit by the operational order or configuration parameter that are applied to fault detect; Fault detection unit, for receiving operational order or configuration parameter from configuration management element, detecting according to operational order or configuration parameter operation troubles, and carrying out fault detect to the section in the protected field of local; Detection Information or warning information are fed back to configuration management element.The invention also discloses a kind of detection method of Ethernet localised protection; the method comprises: the operational order needed for fault detection unit detects according to the operation received from configuration management element or configuration parameter operation troubles detect, and carry out fault detect to the section in the protected field of local.Adopt device and method of the present invention, energy fast detecting outgoing link fault, thus improve the efficiency of protection switching.
Description
Technical Field
The present invention relates to the field of network communication technologies, and in particular, to a device and a method for detecting local protection of an ethernet tunnel.
Background
With the introduction of Carrier Ethernet (CE) concept to meet the telecommunication network requirements, the connection-oriented Ethernet technology, Provider Backbone Transport (PBT), was also surfaced in 2005 at 10 months. After that, operators at home and abroad adopt PBT technology networking, and a good start is provided for the development of the PBT technology in the metropolitan area network.
The PBT technology is based on the Provider Backbone Bridging (PBB) technology defined by the IEEE802.1 ah standard, and the IEEE refers to the PBT technology as the Provider Backbone bridging (PBB-TE) technology supporting Traffic Engineering. The PBB-TE technology is based on the PBB technology, the core of the PBB technology is to improve the PBB technology, an outer layer Media Access Control (MAC) address is adopted, and meanwhile, an outer layer Virtual Local Area Network (VLAN) identifier is combined, for example, a Backbone Destination MAC address (B-DA, Backbone Destination MAC address) + a Backbone VLAN identifier (B-VID, Backbone VLAN ID) is used for service forwarding, and a forwarding path is configured in advance. The traffic in the CE is made in fact connected through network management and control in order to implement the functions of the telecommunication network of protection switching, quality of service (QoS), traffic engineering, etc. The PBB-TE technology is compatible with the architecture of the traditional Ethernet bridge, the data frame can be forwarded based on the B-DA + B-VID without updating the intermediate node of the network, the data frame does not need to be modified, and the forwarding efficiency is high.
The attributes of the tunnel are represented by a triplet < ESP-DA, ESP-SA, ESP-VID > where ESP is the ethernet switched path, parameter ESP-DA refers to the ethernet switched path destination MAC address, parameter ESP-SA refers to the ethernet switched path source MAC address, and parameter ESP-VID refers to the value of B-VLAN. A point-to-point Traffic Engineering Service Instance (TESI) consists of a pair of bi-directional point-to-point ESPs. A detailed description of the triplets and TESI may be found in the IEEE802.1Qay standard.
Fig. 1 is a schematic diagram of ethernet tunnel protection when the existing PBB-TE technology is adopted, and taking the left-to-right direction of fig. 1 as an example, the ESP of the end-to-end working tunnel, i.e., Y-B-C-D-X, is < B-MAC2, B-MAC1, B-VLAN1 >. Wherein, B-MAC2 is the MAC address of X, which is the destination MAC address; B-MAC1 is the MAC address of Y, which is the source MAC address; B-VLAN1 is the value of the B-VLAN of Y-B-C-D-X.
The prior art realizes the full path protection of the tunnel. As shown in FIG. 1, in the TESI end-to-end working tunnel Y-B-C-D-X, Y and X are the end points of the tunnel instance; Y-F-G-H-X is the end-to-end backup tunnel of the TESI, and Y-F-G-H-X is the backup tunnel of Y-B-C-D-X. Wherein, Y-B-C-D-X is a bidirectional end-to-end working tunnel, and Y-F-G-H-X is a bidirectional end-to-end backup tunnel. Moreover, the middle solid line along Y-B-C-D-X is paired with the middle dotted line along Y-F-G-H-X to form a group of working tunnels and corresponding backup tunnels; the thick solid lines along Y-B-C-D-X are paired with the thick dashed lines along Y-F-G-H-X to form another set of working tunnels and corresponding backup tunnels. Then the switch to Y-F-G-H-X can be made in both directions when a fault is detected by Y-B-C-D-X. And in order to distinguish whether the message is forwarded on the working tunnel or the backup tunnel during message forwarding, when the message forwarding system is configured in advance, virtual local area network identifiers (B-VLANs) borne by the tunnels are respectively assigned to the working tunnel and the backup tunnel, for example, B-VLAN1 is assigned to the working tunnel, and B-VLAN2 is assigned to the backup tunnel.
The connectivity of the tunnel is detected by sending a Connectivity Check Message (CCM) in the tunnel, the CCM being defined in the IEEE802.1 ag standard. CCM is mutually transmitted between the tunnel endpoints along the working tunnel and the backup tunnel respectively, and the CCM message headers of the working tunnel and the backup tunnel respectively package the B-VLAN1 and the B-VLAN 2. See the ieee802.1qay standard.
Although the end-to-end protection technology of the PBB-TE can effectively protect the tunnel, the end-to-end protection scheme not only has long protection switching time, but also has too many involved nodes. When a certain segment in the path is particularly vulnerable or a certain segment is particularly important, only the local links of the end-to-end tunnel may be protected. Local link protection may protect all tunnel instances carried on this segment of the link. Combining local link protection with full path protection of end-to-end tunnel instances can enhance the robustness of the PBB-TE network, increase failure recovery speed and reduce nodes involved in protection switching.
In the prior art, tunnel full path protection can protect an end-to-end PBB-TE tunnel. When a certain section of link within the PBB-TE network carrying a plurality of PBB-TE tunnels is particularly important or particularly vulnerable, only partial links within the PBB-TE network domain may be protected. It can be seen that combining local link protection with full path protection of end-to-end tunnel instances can enhance the robustness of the PBB-TE network, increase the failure recovery speed and reduce the nodes involved in protection switching. However, the precondition for protection switching is: a link failure needs to be detected. Thus, the protection of the failed link can be switched to the corresponding protection link in a targeted manner. That is, the efficiency of implementing protection switching depends on the scheme taken for detection, in addition to the combination of local link protection and end-to-end full path protection. Currently, a detection scheme capable of improving protection switching efficiency is urgently needed.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a device and a method for detecting local protection of ethernet, which can quickly detect a link failure, thereby improving the efficiency of protection switching.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the detection device for local protection of Ethernet is located at any side segment end point of a local protection domain; the device comprises: a configuration management unit and a fault detection unit; wherein,
the configuration management unit is used for receiving commands or parameters of external configuration and sending operation commands or configuration parameters applied to fault detection to the fault detection unit;
the fault detection unit is used for receiving the operation command or the configuration parameter from the configuration management unit, operating fault detection according to the operation command or the configuration parameter and carrying out fault detection on the segment in the local protection domain; and feeding back the detection information or the alarm information to the configuration management unit.
Wherein the apparatus further comprises: the protection switching unit is used for redirecting a Traffic Engineering Service Instance (TESI) on the working segment to the protection segment; alternatively, the TESI restoration on the protection segment is redirected to the working segment.
The configuration management unit is further configured to receive an external configuration command or parameter, and send an operation command or configuration parameter applied to protection switching to the protection switching unit;
the fault detection unit is further used for generating a switching message after detecting the fault state of the section and sending the switching message to the protection switching unit;
the protection switching unit is further configured to receive the operation command or the configuration parameter from the configuration management unit, run protection switching according to the operation command or the configuration parameter, and perform protection switching for redirection or redirection recovery of the TESI in combination with the switching message received from the fault detection unit; and feeding back the switching information or the alarm information to the configuration management unit.
The fault detection unit at the local end is further used for interacting detection messages with the remote end; the state of the segment is interactively acquired according to the detection message, and the generated switching message is sent to the protection switching unit;
the protection switching unit is further configured to run protection switching according to the operation command or the configuration parameter received from the configuration management unit, and perform protection switching for redirection or redirection recovery of the TESI in combination with the switching message received from the fault detection unit of the local end; and feeding back the switching information or the alarm information to the configuration management unit.
The protection switching unit at the local end is further used for carrying out switching message interaction with the remote end; running protection switching according to the operation command or the configuration parameter received from the configuration management unit, and performing protection switching for redirecting or recovering redirection of the TESI in combination with the switching message received from a far end; and feeding back the switching information or the alarm information to the configuration management unit.
A method for detecting local protection of an ethernet network, the method comprising:
the configuration management unit receives commands or parameters of external configuration;
the fault detection unit operates fault detection according to an operation command or configuration parameters required by operation detection received from the configuration management unit and performs fault detection on the segment in the local protection domain;
and feeding back the detection information or the alarm information to the configuration management unit.
The local protection domain for operation detection consists of a working section and at least one protection section; the working segment and the protection segment have the same end point, and the segment consists of a series of Local Area Networks (LANs) and bridge equipment between the LANs;
the TESI is used as a protected object in the local protection domain, and specifically includes: a set of TESIs passed through (transition) segment.
Wherein, the method also comprises: when the protection switching unit executes protection switching, the TESI on the working segment is redirected to the protection segment; or redirecting the TESI recovery on the protection segment to the working segment.
Wherein the protection switching specifically comprises: the protection switching unit performs protection switching for redirecting or recovering redirection of the TESI according to an operation command or configuration parameters required by operation switching received from the configuration management unit and in combination with a switching message received from the fault detection unit of the local terminal; feeding switching information or alarm information back to the configuration management unit; wherein, the switching message is generated by a fault detection unit of the local terminal;
or, the protection switching unit operates the protection switching according to the operation command or the configuration parameter required by the operation switching received from the configuration management unit, and performs the redirection of the TESI or the recovery of the redirected protection switching by combining the switching message received from the far end; feeding switching information or alarm information back to the configuration management unit; the switching message is acquired by a protection switching unit at the local end in a switching message interaction manner with the remote end.
The device of the invention is positioned on any side section end point of the local protection domain; the device comprises: a configuration management unit and a fault detection unit. The configuration management unit is used for receiving commands or parameters of external configuration and sending operation commands or configuration parameters applied to fault detection to the fault detection unit; the fault detection unit is used for receiving the operation command or the configuration parameters from the configuration management unit, running fault detection according to the operation command or the configuration parameters and carrying out fault detection on the sections in the local protection domain; and feeding back the detection information or the alarm information to the configuration management unit.
The device of the invention can automatically and quickly detect the fault link according to the pre-configured parameters or operation commands, thereby realizing the quick protection switching of the TESI of a plurality of Ethernet tunnels on the local transmission entity. When the local transmission entity fault is detected, all the TESIs on the local transmission entity are redirected to the protection transmission entity of the local transmission entity, the fault location and repair can be limited in a small range, and the protection switching efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of a conventional PBB-TE tunnel full path protection;
FIG. 2 is a schematic diagram of the structure of the device and the input/output relationship among the units;
FIG. 3 is a schematic diagram of a local protection model of an Ethernet tunnel according to the present invention;
FIG. 4 is a schematic diagram of a protected object of the present invention;
FIG. 5 is a schematic view of an embodiment of the present invention;
fig. 6 is a schematic flow chart of the implementation of the method of the present invention.
Detailed Description
The basic idea of the invention is: the device comprises a configuration management unit, a fault detection unit and a fault detection unit, wherein the configuration management unit is used for receiving commands or parameters of external configuration and sending operation commands or configuration parameters applied to fault detection to the fault detection unit; the fault detection unit is used for receiving the operation command or the configuration parameters from the configuration management unit, running fault detection according to the operation command or the configuration parameters and carrying out fault detection on the sections in the local protection domain; and feeding back the detection information or the alarm information to the configuration management unit.
The following describes the embodiments in further detail with reference to the accompanying drawings.
As shown in fig. 2, a detection apparatus for local protection of ethernet is located at any end of the side segment of the local protection domain; the device includes: a configuration management unit and a fault detection unit. The configuration management unit is used for receiving commands or parameters of external configuration and sending operation commands or configuration parameters applied to fault detection to the fault detection unit. The fault detection unit is used for receiving the operation command or the configuration parameter of the operation fault detection unit from the configuration management unit, operating fault detection according to the operation command or the configuration parameter and carrying out fault detection on the section in the local protection domain; and feeding back the detection information or the alarm information to the configuration management unit.
Here, the local protection domain is composed of one working segment and at least one protection segment; the working segment and the protection segment have the same segment end points. The TESI is used as a protected object in the local protection domain, and specifically includes: a set of TESIs passed through (transition) segment. Thus, the fault detection unit can carry out efficient detection according to the operation command or the configuration parameter configured in advance, and the set of TESIs can be effectively protected by the fault detection means. Wherein a segment is composed of a series of Local Area Networks (LANs) and bridge devices in between. The relationship of this set of TESIs to segments in the local protection domain, the Chinese meaning, can be interpreted as: a set of TESIs that traverse a series of LANs and intervening bridge devices. The English expression is: a group of TrafficEngineered Service Instances (TESIs) which are sequences of Local Area Networks (LANs) and interactive bridges. The following refers to reverse, which is also meant herein, and is not described in detail below.
Here, the apparatus further includes: the protection switching unit is used for redirecting the TESI on the working section to the protection section; alternatively, the TESI restoration on the protection segment is redirected to the working segment.
When the protection switching unit acquires different switching messages from different ways, the specific implementation is different; the input and output relationships among the units in the device are different, and the specific implementation of each unit is also different, which is described in the following specific examples.
In the first case: and the configuration management unit is further used for receiving an external configuration command or parameter and sending an operation command or configuration parameter applied to protection switching to the protection switching unit. And the fault detection unit is further used for generating a switching message after detecting the fault state of the section and sending the switching message to the protection switching unit. The protection switching unit is used for receiving an operation command or configuration parameters for operating the protection switching unit from the configuration management unit, operating protection switching according to the operation command or the configuration parameters, and performing TESI redirection or recovery redirection protection switching by combining the switching message received from the fault detection unit; and feeding back the switching information or the alarm information to the configuration management unit.
Here, for the switching message, the generation of the switching message depends on the states of the working segment and the protection segment, and the TESI can be switched from the working segment to the protection segment only when the working segment fails and the protection segment does not fail. That is, the fault detection unit detects both the state of the working segment and the state of the protection segment, otherwise, blind switching occurs. The place related to the handover message is the meaning herein, and the details are not described below.
In the second case: the fault detection unit is positioned at the local end and is further used for interacting the detection message with the remote end; and interactively acquiring the fault state of the segment according to the detection message, and sending the generated switching message to a protection switching unit. The interaction of the detection messages can be performed between the local fault detection unit and the remote fault detection unit.
The protection switching unit is further used for operating protection switching according to an operation command or configuration parameters for operating the protection switching unit received from the configuration management unit and performing TESI redirection or recovery redirection protection switching by combining a switching message received from the fault detection unit of the local terminal; and feeding back the switching information or the alarm information to the configuration management unit.
In the third case: the protection switching unit is positioned at the local end and is further used for carrying out switching message interaction with the remote end; the protection switching is operated according to an operation command or configuration parameters of the operation protection switching unit received from the configuration management unit, and the protection switching of the redirection or recovery redirection of the TESI is carried out in combination with the switching message received from the far end; and feeding back the switching information or the alarm information to the configuration management unit. The switching message interaction can be performed between the local protection switching unit and the remote protection switching unit.
In summary, the present invention mainly includes the following contents: a working section and at least one protection section form a local protection domain. The working and protection segments have the same end-point bridge, and a segment is composed of a series of LANs and bridge devices in between. The end bridges are the end points of the segments.
Wherein, the protected object of the local protection domain is a set of TESIs on the segment. Segments in this set of TESI transition local protection domains. The failure detection unit in the inventive arrangement protects the set of TESIs by failure monitoring of the segments within the local protection domain. Under normal conditions, the working segment refers to a segment in which the protected object runs; the protection segment is a backup entity corresponding to the working segment, and when a switching event occurs, a protection object on the affected working segment is switched to the protection segment.
By adopting the protection switching unit in the device, a group of TESIs on the working section can be redirected to the protection section or a group of TESIs on the protection section can be restored and redirected to the working section.
In order to complete the segment protection function, the segment end points of the local end and/or the remote end are provided with the device of the invention, wherein the device comprises a configuration management unit, a fault detection unit and a protection switching unit. The configuration management unit is responsible for configuration of the local protection domain and processing of management information, and input information of the configuration management unit comprises: the protection switching unit is used for protecting the switching information and the alarm information output by the protection switching unit. The output of the configuration management unit includes: configuration parameters sent to the fault detection unit, configuration parameters sent to the protection switching unit, operation commands and the like.
And for the fault detection unit, the fault detection unit is responsible for monitoring the connectivity or faults of the working section and the protection section, and when the fault of the working section is detected and the protection section has no fault, the protection switching unit is informed to switch. The inputs to the fault detection unit include: a detection message of a remote end, configuration parameters sent by a configuration management unit, and the like. The output of the fault detection unit includes: detection messages sent to a far end, detection information and alarm information output to a configuration management unit, switching information output to a protection switching unit and the like.
The protection switching unit is responsible for determining whether to perform protection switching and how to perform protection switching according to the input information. The inputs of the protection switching unit include: the switching information of the far end, the switching information sent by the fault detection unit, the configuration parameters and the operation commands sent by the configuration management unit, and the like. The output of the protection switching unit includes: switching information sent to the remote end, switching information and alarm information output to the configuration management unit, and the like.
Fig. 3 is a diagram of a local protection model of an ethernet tunnel according to the present invention. The local protection domain in the figure is shown as a dashed box and comprises a working segment and a plurality of protection segments, wherein the number of the protection segments is greater than or equal to 1. The working segment and the protection segment are portions between segment end point bridge S1 and segment end point bridge S2. The same components are contained in the working section and the protection section, both being bridge devices and LANs connected in series. Among them, the number of bridge devices and LAN devices is arbitrary. It is to be noted here that: there may also be no bridge or LAN on a segment and only one segment of the link. LAN device in FIG. 3 toRepresents; bridge apparatus andand (4) showing.
The relationship and input/output relationship between the units in the device of the present invention are shown in fig. 2, and include: inputting an external configuration command or parameter to a configuration management unit; secondly, outputting detection information or alarm information and the like to the configuration management unit for the fault detection unit; inputting configuration parameters or operation commands from the configuration management unit for the fault detection unit; fourthly, the configuration management unit outputs configuration parameters or operation commands and the like to the protection switching unit; the protection switching unit outputs switching information or alarm information to the configuration management unit; sixthly, the local fault detection unit and the remote end interactively detect the message; seventhly, switching information is interacted between the local terminal switching protection unit and the remote terminal; and the fault detection unit sends a switching message to the protection switching unit.
FIG. 4 is a schematic diagram illustrating a protected object of the present invention. As shown in FIG. 4, B-C-D is the working segment of the local protection domain, and B-F-G-H is the protection segment of the local protection domain. TESI-1 and TESI-2 start and end in the local protection domain at the locally protected segment end bridges B and C and pass through the working segmentThe parts of the nodes C, TESI-1 and TESI-2 above in the local protection domain can be protected by the local protection domain. While TESI-3 cannot be protected by the local protection domain because TESI-3 only does not pass through the breakpoint bridge B of the local protection domain. In actual implementation, whether TESI-1 and TESI-2 are protected by the local protection domain is also combined with actual configuration. In the context of figure 4, it is shown,representing a local protection domain; TESI-1, TESI-2, and TESI-3 are indicated by different thick solid lines, respectively, with TESI-3 being the coarsest, TESI-2 times the coarsest, and TESI-1 being the finest.
FIG. 5 is an implementation of a protection switch. The local protection domain is shown as a shaded portion, wherein the working segment is B-C-D, the backup segment is B-F-G-D, and the two-way Ethernet switch paths ESP-1 and ESP-2 pass through the working segment of the local protection domain. B. D is the end-point bridge of the local protection domain. Normally, the configuration of the ethernet forwarding path on the working segment is shown in the table above the endpoint bridge in the figure, where Pn/Pm represents the working path outgoing interface and the protection path outgoing interface, respectively. The working entry of the FDB address table of ESP-1 on endpoint bridge B is < X, 1> → P2, and the backup entry is < X, 1> → P3; the FDB address table of ESP-2 has a work entry < Y, 2> → P1 and a backup entry < Y, 2> → P3 on the endpoint bridge D. The intermediate node of the segment has no backup FDB entry, and only needs to preset an FDB address table forwarding entry. In bidirectional protection switching mode, when the working segment fails, the endpoint bridge B, D switches the FDB address table entry to the backup entry to switch the bidirectional ethernet switched path to the backup segment. The FDB refers to a Filtering Database, which is denoted by Filtering Database, and may also be referred to as an address forwarding table or an address table.
As shown in fig. 6, a method for detecting local protection of ethernet includes the following steps:
step 101, the configuration management unit receives commands or parameters of external configuration.
Here, these commands and parameters are applied to detection, that is, the fault detection unit needs to run fault detection depending on the configuration parameters or operation commands received from the configuration management unit for running fault detection; similarly, these commands and parameters are also applied to the switching, that is, the protection switching unit needs to execute the protection switching depending on the configuration parameters or operation commands received from the configuration management unit for executing the protection switching.
Step 102, the fault detection unit operates fault detection according to the operation command or configuration parameter required by the operation detection received from the configuration management unit, and performs fault detection on the segment in the local protection domain.
Step 103, the fault detection unit feeds back the detection information or the alarm information to the configuration management unit.
Here, the local protection domain protected by the operation detection is composed of a working segment and at least one protection segment; the working segment and the protection segment have the same segment end points. The TESI is used as a protected object in the local protection domain, and specifically includes: set of TESIs of transition segment.
Here, the method further includes: when the protection switching unit executes protection switching, the TESI on the working section is redirected to the protection section; alternatively, the TESI restoration on the protection segment is redirected to the working segment.
Here, when the protection switching unit acquires different switching messages from different ways, the protection switching operation performed by the protection switching unit is different, and the following specific example illustrates the operation.
In the first case: when the protection switching unit executes protection switching, the protection switching unit redirects or restores the redirected protection switching of the TESI according to an operation command or configuration parameters required by operation switching received from the configuration management unit and in combination with a switching message received from the fault detection unit of the local terminal; and feeding back the switching information or the alarm information to the configuration management unit. Wherein, the switching message is generated by the fault detection unit of the local terminal.
In the second case: when the protection switching unit executes protection switching, the protection switching is executed according to an operation command or configuration parameters required by the operation switching received from the configuration management unit, and the protection switching of the redirection or recovery redirection of the TESI is carried out in combination with the switching message received from the far end; and feeding back the switching information or the alarm information to the configuration management unit. The switching message is acquired by a protection switching unit at the local end in a switching message interaction manner with the remote end.
Here, the above-mentioned Segment may be denoted by an Infrastructure Segment.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (9)
1. The detection device for the local protection of the Ethernet is characterized in that the device is positioned on any side segment end point of a local protection domain; the device comprises: a configuration management unit and a fault detection unit; wherein,
the configuration management unit is used for receiving commands or parameters of external configuration and sending operation commands or configuration parameters applied to fault detection to the fault detection unit;
the fault detection unit is used for receiving the operation command or the configuration parameter from the configuration management unit, operating fault detection according to the operation command or the configuration parameter and carrying out fault detection on the segment in the local protection domain; and feeding back the detection information or the alarm information to the configuration management unit.
2. The apparatus of claim 1, further comprising: the protection switching unit is used for redirecting the Traffic Engineering Service Instance (TESI) on the working segment to the protection segment; alternatively, the TESI restoration on the protection segment is redirected to the working segment.
3. The apparatus of claim 2, wherein the configuration management unit is further configured to receive an external configuration command or parameter, and send an operation command or configuration parameter applied to protection switching to the protection switching unit;
the fault detection unit is further used for generating a switching message after detecting the fault state of the section and sending the switching message to the protection switching unit;
the protection switching unit is further configured to receive the operation command or the configuration parameter from the configuration management unit, run protection switching according to the operation command or the configuration parameter, and perform protection switching for redirection or redirection recovery of the TESI in combination with the switching message received from the fault detection unit; and feeding back the switching information or the alarm information to the configuration management unit.
4. The apparatus according to claim 2, wherein the fault detection unit at the local end is further configured to perform interaction of detecting a message with the remote end; the state of the segment is interactively acquired according to the detection message, and the generated switching message is sent to the protection switching unit;
the protection switching unit is further configured to run protection switching according to the operation command or the configuration parameter received from the configuration management unit, and perform protection switching for redirection or redirection recovery of the TESI in combination with the switching message received from the fault detection unit of the local end; and feeding back the switching information or the alarm information to the configuration management unit.
5. The apparatus of claim 2, wherein the protection switching unit at the local end is further configured to perform switching message interaction with the remote end; running protection switching according to the operation command or the configuration parameter received from the configuration management unit, and performing protection switching for redirecting or recovering redirection of the TESI in combination with the switching message received from a far end; and feeding back the switching information or the alarm information to the configuration management unit.
6. A method for detecting local protection of ethernet, the method comprising:
the configuration management unit receives commands or parameters of external configuration;
the fault detection unit operates fault detection according to an operation command or configuration parameters required by operation detection received from the configuration management unit and performs fault detection on the segment in the local protection domain;
and feeding back the detection information or the alarm information to the configuration management unit.
7. The method according to claim 6, characterized in that the local protection domain of the operation detection consists of one working segment and at least one protection segment; the working segment and the protection segment have the same end point, and the segment consists of a series of Local Area Network (LAN) and bridge equipment between the LAN and the LAN;
the traffic engineering service instance TESI, as a protected object in the local protection domain, specifically is: a set of TESIs passed through (transition) segment.
8. The method of claim 7, further comprising: when the protection switching unit executes protection switching, the TESI on the working segment is redirected to the protection segment; or redirecting the TESI recovery on the protection segment to the working segment.
9. The method according to claim 8, wherein the protection switching specifically comprises: the protection switching unit performs protection switching for redirecting or recovering redirection of the TESI according to an operation command or configuration parameters required by operation switching received from the configuration management unit and in combination with a switching message received from the fault detection unit of the local terminal; feeding switching information or alarm information back to the configuration management unit; wherein, the switching message is generated by a fault detection unit of the local terminal;
or, the protection switching unit operates the protection switching according to the operation command or the configuration parameter required by the operation switching received from the configuration management unit, and performs the redirection of the TESI or the recovery of the redirected protection switching by combining the switching message received from the far end; feeding switching information or alarm information back to the configuration management unit; the switching message is acquired by a protection switching unit at the local end in a switching message interaction manner with the remote end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910091476.XA CN101997728B (en) | 2009-08-21 | 2009-08-21 | A kind of checkout gear of Ethernet localised protection and method |
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| CN101019373A (en) * | 2004-12-28 | 2007-08-15 | 中兴通讯股份有限公司 | Configuration control method and device for remote device configuration parameter set |
| CN101087216A (en) * | 2007-05-23 | 2007-12-12 | 东北大学 | Detection system and method for base secondary link failure of computer network |
| CN101505246A (en) * | 2009-03-02 | 2009-08-12 | 中兴通讯股份有限公司 | Fault detection and recovery method for network tunnel sectional protection mode |
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| CN101019373A (en) * | 2004-12-28 | 2007-08-15 | 中兴通讯股份有限公司 | Configuration control method and device for remote device configuration parameter set |
| CN101087216A (en) * | 2007-05-23 | 2007-12-12 | 东北大学 | Detection system and method for base secondary link failure of computer network |
| CN101505246A (en) * | 2009-03-02 | 2009-08-12 | 中兴通讯股份有限公司 | Fault detection and recovery method for network tunnel sectional protection mode |
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