CN109982170B - Link-based protection method and system for optical network equipment - Google Patents
Link-based protection method and system for optical network equipment Download PDFInfo
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- CN109982170B CN109982170B CN201910161394.1A CN201910161394A CN109982170B CN 109982170 B CN109982170 B CN 109982170B CN 201910161394 A CN201910161394 A CN 201910161394A CN 109982170 B CN109982170 B CN 109982170B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0079—Operation or maintenance aspects
- H04Q2011/0081—Fault tolerance; Redundancy; Recovery; Reconfigurability
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0079—Operation or maintenance aspects
- H04Q2011/0083—Testing; Monitoring
Abstract
The invention discloses a link-based protection method and system for optical network equipment, and relates to the technical field of computers and photoelectric communication. According to the invention, by starting the round-robin thread, the clock register, the back panel link state and the number of link crc errors are detected, and protective measures are executed according to the detection result. Under the conditions of not increasing cost, bringing extra complexity and the like, the problem that the whole frame of service is flashed due to faults of individual single disk faults or clock faults, poor connection of a back plate and the like of optical network communication equipment based on a cell switching architecture is solved, the development, networking and maintenance costs are saved, and the stability of the equipment is enhanced.
Description
Technical Field
The invention relates to the technical field of computers and photoelectric communication, in particular to a link-based protection method and system of optical network equipment.
Background
At present, with the mature and commercial use of 4G and the development layout of 5G (fifth-generation), optical network transmission equipment is deployed on a large scale. 5G puts forward key new requirements for a bearer network, including large bandwidth, ultrahigh speed, ultralow time delay and low bit cost. The ultra-high speed and large bandwidth requirements present a great challenge to the existing bearer network, which will result in a sharp increase of transmission bandwidth and a sinking of all-optical nodes to the central transmission. Secondly, the harsh requirements of millimeter-scale time delay and hundred nanosecond-scale clock precision bring double challenges to a network architecture and nodes, and the flattening network architecture and microsecond-scale ultra-low time delay node equipment become the current technical development direction. The stability of large capacity crossover and transmission equipment is an important consideration.
However, in order to improve transmission capacity, bandwidth and implement flexible cross-scheduling granules, the optical network equipment is implemented inside the equipment in a cell switching manner. However, the cell-switched architecture has the problem that the entire frame of service is flashed due to the failure of individual single disk or the failure of clock, etc., and the failure is not the condition for triggering the protection switching. The customer perception and the communication product stability are seriously affected. This situation runs counter to the trend of the entire network.
Disclosure of Invention
The present invention aims to overcome the defects of the background art, and provides a link-based protection method and system for an optical network device, which solves the problem of the whole frame service flash caused by individual single disk failure or clock failure, poor connection of a back plate, and other failures, and ensures the stability of the device and the service.
The invention provides a link-based protection method of optical network equipment, which comprises the following steps:
and starting a round-robin thread, detecting the state of the clock register, the link of the back plate and the number of errors of the link crc, and executing protective measures according to the detection result.
On the basis of the scheme, the method for detecting the state of the clock register, the state of the backplane link and the number of link crc errors and executing protective measures according to the detection result specifically comprises the following steps: comparing whether the frequency of the clock register is matched with the frequency of the system clock, if not, not enabling the control overhead or the cell of the back plate link; and if the link state and the link crc error number of the backboard are matched, detecting the link state and the link crc error number of the backboard, and executing corresponding protection measures.
On the basis of the scheme, the method for detecting the link state and the link crc error number of the backboard and executing corresponding protection measures specifically comprises the following steps:
if the number of link ups of the back plate is greater than the minimum number of links required by the single disk, and the number of link error is less than the maximum number of link error of the single disk, enabling control overhead or cells of the back plate link;
if the number of link error is larger than the maximum number of link error allowed by a single disk, or the number of back plate link up is smaller than the minimum number of back plate link up, the control overhead or cells of the back plate link cannot be enabled, and an alarm is sent out.
On the basis of the scheme, the method for detecting the link state and the link crc error number of the backboard and executing corresponding protection measures comprises the following steps: when the number of the back plate link error is smaller than the maximum number of the single disk link error, setting the number of errors of a single link crc on the back plate side in time to exceed a threshold value, isolating the single link, and sending an alarm; and if no link crc error occurs in any link within the set time, performing the action of removing the isolation on the isolated link and canceling the alarm.
On the basis of the scheme, when the number of the back plate link error is smaller than the maximum number of the single disk link error, the number of single link crc errors on the back plate side exceeds a threshold value within set time, isolating the single link and giving an alarm; the method comprises the following steps of setting a link crc error in no link within a set time, executing a de-isolation action on the isolated link, and canceling an alarm, wherein the method specifically comprises the following steps:
circularly detecting the crc states of all links, if 1 crc error appears on one link, judging whether the crc error is the crc error received by the link for the first time, and if the crc error is received by the link for the first time, starting a timer and circularly detecting the set times; if not, continuing to detect the next time when the crc error is received for the first time;
when the accumulation of the cycle times reaches the set times, if the crc error accumulation count of the link is more than or equal to the threshold value, isolating the link; if the crc count accumulated by the link is less than or equal to the threshold, clearing the crc error count data of the link; if the accumulated cycle times reach the set times, none of the links has crc, the links are searched for being isolated, and if yes, the isolated links are subjected to the operation of isolation removal;
if a certain cycle is detected without crc error count, the cycle count will continue with +1 and continue with the next cycle.
The present invention also provides a link-based protection system for an optical network device, comprising:
a Link anomaly detection module to: starting a round-robin thread, and detecting the state of a clock register, a back plate link and the number of link crc errors;
a Link exception protection module to: and executing protective measures according to the inspection result.
On the basis of the scheme, the Link abnormity detection module starts a round-robin thread, detects the clock register, the backboard Link state and the number of Link crc errors, and executes protective measures according to the check result, and specifically comprises the following steps:
the Link abnormity detection module compares whether the frequency of the clock register is matched with the frequency of the system clock, if not, the Link abnormity protection module does not enable the control overhead or cells of the backboard Link; if the Link status and the Link crc errors are matched, the Link abnormity detection module continues to detect the Link status and the number of the Link crc errors of the backboard, and the Link abnormity protection module executes protection measures.
On the basis of the above scheme, the Link exception protection module is specifically configured to:
if the number of link ups of the back plate is greater than the minimum number of links required by the single disk, and the number of link error is less than the maximum number of link error of the single disk, enabling control overhead or cells of the back plate link;
if the number of link error is larger than the maximum number of link error allowed by a single disk, or the number of back plate link up is smaller than the minimum number of back plate link up, the control overhead or cells of the back plate link cannot be enabled, and an alarm is sent out.
On the basis of the above scheme, the Link exception protection module is further specifically configured to:
when the number of the back plate link error is smaller than the maximum number of the single disk link error, setting the number of errors of a single link crc on the back plate side in time to exceed a threshold value, isolating the single link, and sending an alarm; and if no link crc error occurs in any link within the set time, performing the action of removing the isolation on the isolated link and canceling the alarm.
On the basis of the scheme, when the number of the Link error of the back plate is smaller than the maximum number of the Link error of the single disk, the Link abnormal protection module isolates the single Link and sends an alarm when the number of the crc errors of the single Link at the back plate side exceeds a threshold value within a set time; the method comprises the following steps of setting a link crc error in no link within a set time, executing a de-isolation action on the isolated link, and canceling an alarm, wherein the method specifically comprises the following steps:
circularly detecting the crc states of all links, if 1 crc error appears on one link, judging whether the crc error is the crc error received by the link for the first time, and if the crc error is received by the link for the first time, starting a timer and circularly detecting the set times; if not, continuing to detect the next time when the crc error is received for the first time;
when the accumulation of the cycle times reaches the set times, if the crc error accumulation count of the link is more than or equal to the threshold value, isolating the link; if the crc count accumulated by the link is less than or equal to the threshold, clearing the crc error count data of the link; if the accumulated cycle times reach the set times, none of the links has crc, the links are searched for being isolated, and if yes, the isolated links are subjected to the operation of isolation removal;
if a certain cycle is detected without crc error count, the cycle count will continue with +1 and continue with the next cycle.
Compared with the prior art, the invention has the following advantages:
according to the invention, by starting a round-robin thread, the link state and the number of link crc errors of the backboard are detected; and executing protective measures according to the inspection result. Under the conditions of not increasing cost, bringing extra complexity and the like, the problem that the whole frame of service is flashed due to individual single-disk faults or clocks and other faults of optical network communication equipment based on a cell switching architecture is solved, the development, networking and maintenance costs are saved, and the stability of the equipment is enhanced.
Drawings
Fig. 1 is a flowchart of a protection processing for multiple link exceptions in an initialization process or an operation process of a link-based protection method of an optical network device according to an embodiment of the present invention;
fig. 2 is a flowchart of a small number or single link exception protection processing in the operation process of the link-based protection method of the optical network device according to the embodiment of the present invention;
fig. 3 is a schematic flow chart of a Link exception handling flow of a Link-based protection method using an optical network device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a link-based protection system of an optical network device according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
The embodiment of the invention provides a link-based protection method of optical network equipment, which comprises the following steps:
starting a round-robin thread, and detecting the state of a clock register, a back plate link and the number of link crc errors;
and executing protective measures according to the inspection result.
As a preferred embodiment, the method comprises the following steps of detecting the clock register, the link state of the backplane and the number of link crc errors, and executing protective measures according to the detection result: comparing whether the frequency of the clock register is matched with the frequency of the system clock, if not, not enabling the control overhead or the cell of the back plate link; and if the link state and the link crc error number of the backboard are matched, detecting the link state and the link crc error number of the backboard, and executing corresponding protection measures.
Detecting the link state and the link crc error number of the backboard, and executing corresponding protection measures, wherein the method specifically comprises the following steps:
if the number of link ups of the back plate is greater than the minimum number of links required by the single disk, and the number of link error is less than the maximum number of link error of the single disk, enabling control overhead or cells of the back plate link;
the number of link error is greater than the maximum number of link error allowed by a single disk, or the number of link up of the back plate is less than the minimum number of link up, so that the control overhead or cells of the back plate link cannot be enabled, and an alarm is sent out;
when the control overhead or the cell of the back plate link is enabled, setting the number of errors of a single link crc at the back plate side in time to exceed a threshold value, isolating the single link and sending an alarm; and if no link crc error occurs in any link within the set time, performing the action of removing the isolation on the isolated link and canceling the alarm.
As a preferred embodiment, as shown in fig. 1, the method specifically comprises the following steps:
in the initialization process, the control overhead or the cell of the back panel link is not enabled, whether the frequency of the clock register is matched with the frequency of the system clock is compared, and if the frequency of the clock register is not matched with the frequency of the system clock, the control overhead or the cell of the back panel link is not enabled; if the link state and the link crc error number of the backboard are matched, detecting the link state and the link crc error number of the backboard;
if the number of link up of the back plate is larger than the minimum number of link required by the single disk, and the number of link error is smaller than the number of maximum link error of the single disk, enabling the control overhead or cell of the back plate link;
if the number of link up of the back plate is larger than the minimum number of link up required by the single disk, but the number of link error is larger than the maximum number of link error of the single disk, the control overhead or cell of the back plate link cannot be enabled, and an alarm is sent out;
if the number of the link up of the backboard is smaller than the minimum number of the link up, the control overhead or the cell of the backboard link is not enabled, and an alarm is sent.
In the operation process, the control overhead or the cell of the back plate link is in an enabling state, whether the frequency of the clock register is matched with the frequency of the system clock is compared, and if the frequency of the clock register is not matched with the frequency of the system clock, the control overhead or the cell of the back plate link is not enabled; if the link state and the link crc error number of the backboard are matched, detecting the link state and the link crc error number of the backboard;
if the number of link up of the back plate is larger than the minimum number of link up required by the single disk, but the number of link error is larger than the maximum number of link error of the single disk, the control overhead or cell of the back plate link cannot be enabled, and an alarm is sent out;
if the number of the link up of the back plate is smaller than the minimum number of the link up, the control overhead or cells of the link of the back plate are not enabled, and an alarm is sent out;
if the number of the link up of the back plate is larger than the minimum number of the link required by the single disk, and the number of the link error is smaller than the number of the maximum link error of the single disk, the control overhead or the cell of the back plate link is enabled, and the alarm is cancelled.
Referring to fig. 2, as a preferred embodiment, when the control overhead or the cell of the backplane link is enabled, the number of errors of the crc of the single link on the backplane side exceeds a threshold within a set time, the single link is isolated, and an alarm is issued; the method comprises the following steps of setting a link crc error in no link within a set time, executing a de-isolation action on the isolated link, and canceling an alarm, wherein the method specifically comprises the following steps:
circularly detecting the crc states of all links, if 1 crc error is detected to occur on a certain link, judging whether the crc error is the first crc error received by the link, if so, starting a timer, and circularly detecting for 60 times (namely 5 min) after 5s of each time; if not, the next detection is continued without other processing;
when the cycle number reaches 60 times in total, if the crc error accumulation count of the link reaches 5 times, isolating the link; if the accumulated crc count of the link is less than 5 times, clearing the crc error count data of the link; if no link appears crc in the detection process of 5 minutes, searching whether the link is isolated or not, and if so, performing the operation of isolating the isolated link;
if a certain cycle is detected without crc error count, the cycle count will continue with +1 and continue with the next cycle.
Referring to fig. 3, a Link exception handling process of the Link-based protection method for an optical network device according to the embodiment of the present invention includes the following steps:
1. the method comprises the steps that Link type alarm, performance and line number information are registered when single-disk power-on software is initialized;
2. polling acquisition in a polling task to obtain Link related alarm and performance;
3. and reporting the collected information to an equipment management control unit, and finally analyzing the alarm and performance information by a network manager.
Referring to fig. 4, an embodiment of the present invention further provides a link-based protection system for an optical network device, including:
a Link anomaly detection module to: starting a round-robin thread, and detecting the link state and the number of link crc errors of the backboard;
a Link exception protection module to: and executing protective measures according to the inspection result.
As a preferred embodiment, the Link exception detection module starts a round-robin thread, detects a clock register, a backplane Link status, and the number of Link crc errors, and executes a protection measure according to a check result, specifically including the following steps:
the Link abnormity detection module compares whether the frequency of the clock register is matched with the frequency of the system clock, if not, the Link abnormity protection module does not enable the control overhead or cells of the backboard Link; if the Link status and the Link crc errors are matched, the Link abnormity detection module continues to detect the Link status and the number of the Link crc errors of the backboard, and the Link abnormity protection module executes corresponding protection measures.
The Link exception protection module executes corresponding protection measures, and specifically includes:
if the number of link ups of the back plate is greater than the minimum number of links required by the single disk, and the number of link error is less than the maximum number of link error of the single disk, enabling control overhead or cells of the back plate link;
the number of link error is greater than the maximum number of link error allowed by a single disk, or the number of link up of the back plate is less than the minimum number of link up, so that the control overhead or cells of the back plate link cannot be enabled, and an alarm is sent out;
when the control overhead or the cell of the back plate link is enabled, setting the number of errors of a single link crc at the back plate side in time to exceed a threshold value, isolating the single link and sending an alarm; and if no link crc error occurs in any link within the set time, performing the action of removing the isolation on the isolated link and canceling the alarm.
As a preferred embodiment, the Link exception protection module is specifically configured to:
in the initialization process, the control overhead or the cell of the back panel link is not enabled, whether the frequency of the clock register is matched with the frequency of the system clock is compared, and if the frequency of the clock register is not matched with the frequency of the system clock, the control overhead or the cell of the back panel link is not enabled; if the link state and the link crc error number of the backboard are matched, detecting the link state and the link crc error number of the backboard;
if the number of link up of the back plate is larger than the minimum number of link required by the single disk, and the number of link error is smaller than the number of maximum link error of the single disk, enabling the control overhead or cell of the back plate link;
if the number of link up of the back plate is larger than the minimum number of link up required by the single disk, but the number of link error is larger than the maximum number of link error of the single disk, the control overhead or cells of the back plate link cannot be enabled; and sending an alarm;
if the number of the link up of the backboard is smaller than the minimum number of the link up, the control overhead or the cell of the backboard link is not enabled, and an alarm is sent.
As a preferred embodiment, the Link exception protection module is specifically configured to:
circularly detecting the crc states of all links, if 1 crc error is detected to occur on a certain link, judging whether the crc error is the first crc error received by the link, if so, starting a timer, and circularly detecting for 60 times (namely 5 min) after 5s of each time; if not, the next detection is continued without other processing;
when the cycle number reaches 60 times in total, if the crc error accumulation count of the link reaches 5 times, isolating the link; if the accumulated crc count of the link is less than 5 times, clearing the crc error count data of the link; if no link appears crc in the detection process of 5 minutes, searching whether the link is isolated or not, and if so, performing the operation of isolating the isolated link;
if a certain cycle is detected without crc error count, the cycle count will continue with +1 and continue with the next cycle.
As a preferred embodiment, the Link exception protection module is specifically configured to:
in the operation process, if the number of link error is greater than the maximum number of link error of a single disk, the control overhead or cells of the back plate link cannot be enabled, and an alarm is sent out;
and when the number of the link error of the back plate is detected to be smaller than the maximum number of the link error of the single disk, enabling the control overhead or the cell of the back plate link, and canceling the alarm.
Various modifications and variations of the embodiments of the present invention may be made by those skilled in the art, and they are also within the scope of the present invention, provided they are within the scope of the claims of the present invention and their equivalents. What is not described in detail in the specification is prior art that is well known to those skilled in the art.
Claims (6)
1. A link-based protection method of optical network equipment is characterized by comprising the following steps:
starting a round-robin thread, detecting the state of a clock register, a back plate link and the number of link crc errors, and executing protective measures according to a detection result;
the method comprises the following steps of detecting the clock register, the back plate link state and the number of link crc errors, and executing protective measures according to a detection result, wherein the method specifically comprises the following steps: comparing whether the frequency of the clock register is matched with the frequency of the system clock, if not, not enabling the control overhead or the cell of the back plate link; if the link state and the link crc error number of the backboard are matched, a corresponding protection measure is executed;
the method for detecting the link state and the link crc error number of the backboard and executing corresponding protection measures comprises the following steps:
if the number of link ups of the back plate is greater than the minimum number of links required by the single disk, and the number of link error is less than the maximum number of link error of the single disk, enabling control overhead or cells of the back plate link;
if the number of link error is larger than the maximum number of link error allowed by a single disk, or the number of back plate link up is smaller than the minimum number of back plate link up, the control overhead or cells of the back plate link cannot be enabled, and an alarm is sent out.
2. The method of claim 1, wherein: the method for detecting the link state and the link crc error number of the backboard and executing corresponding protection measures comprises the following steps: when the number of the back plate link error is smaller than the maximum number of the single disk link error, setting the number of errors of a single link crc on the back plate side in time to exceed a threshold value, isolating the single link, and sending an alarm; and if no link crc error occurs in any link within the set time, performing the action of removing the isolation on the isolated link and canceling the alarm.
3. The method of claim 2, wherein: when the number of the back plate link error is smaller than the maximum number of the single disk link error, setting the number of errors of a single link crc on the back plate side in time to exceed a threshold value, isolating the single link, and sending an alarm; the method comprises the following steps of setting a link crc error in no link within a set time, executing a de-isolation action on the isolated link, and canceling an alarm, wherein the method specifically comprises the following steps:
circularly detecting the crc states of all links, if 1 crc error appears on one link, judging whether the crc error is the crc error received by the link for the first time, and if the crc error is received by the link for the first time, starting a timer and circularly detecting the set times; if not, continuing to detect the next time when the crc error is received for the first time;
when the accumulation of the cycle times reaches the set times, if the crc error accumulation count of the link is more than or equal to the threshold value, isolating the link; if the crc count accumulated by the link is less than or equal to the threshold, clearing the crc error count data of the link; if the accumulated cycle times reach the set times, none of the links has crc, the links are searched for being isolated, and if yes, the isolated links are subjected to the operation of isolation removal;
if a certain cycle is detected without crc error count, the cycle count will continue with +1 and continue with the next cycle.
4. A link-based protection system for an optical network device, comprising:
a Link anomaly detection module to: starting a round-robin thread, and detecting the state of a clock register, a back plate link and the number of link crc errors;
a Link exception protection module to: executing protective measures according to the checking result;
the Link abnormity detection module starts a round-robin thread, detects the state of a clock register, a backboard Link and the number of Link crc errors, and executes protective measures according to the detection result, and specifically comprises the following steps:
the Link abnormity detection module compares whether the frequency of the clock register is matched with the frequency of the system clock, if not, the Link abnormity protection module does not enable the control overhead or cells of the backboard Link; if the Link abnormity detection module is matched with the Link abnormity detection module, the Link state and the number of Link crc errors of the backboard are continuously detected, and the Link abnormity protection module executes protection measures;
the Link exception protection module is specifically configured to:
if the number of link ups of the back plate is greater than the minimum number of links required by the single disk, and the number of link error is less than the maximum number of link error of the single disk, enabling control overhead or cells of the back plate link;
if the number of link error is larger than the maximum number of link error allowed by a single disk, or the number of back plate link up is smaller than the minimum number of back plate link up, the control overhead or cells of the back plate link cannot be enabled, and an alarm is sent out.
5. The system of claim 4, wherein: the Link exception protection module is further specifically configured to:
when the number of the back plate link error is smaller than the maximum number of the single disk link error, setting the number of errors of a single link crc on the back plate side in time to exceed a threshold value, isolating the single link, and sending an alarm; and if no link crc error occurs in any link within the set time, performing the action of removing the isolation on the isolated link and canceling the alarm.
6. The system of claim 5, wherein: when the number of the Link error of the back plate is smaller than the maximum number of the Link error of the single disk, the Link abnormity protection module sets the number of the single Link crc errors of the back plate side to exceed a threshold value within a set time, isolates the single Link and sends an alarm; the method comprises the following steps of setting a link crc error in no link within a set time, executing a de-isolation action on the isolated link, and canceling an alarm, wherein the method specifically comprises the following steps:
circularly detecting the crc states of all links, if 1 crc error appears on one link, judging whether the crc error is the crc error received by the link for the first time, and if the crc error is received by the link for the first time, starting a timer and circularly detecting the set times; if not, continuing to detect the next time when the crc error is received for the first time;
when the accumulation of the cycle times reaches the set times, if the crc error accumulation count of the link is more than or equal to the threshold value, isolating the link; if the crc count accumulated by the link is less than or equal to the threshold, clearing the crc error count data of the link; if the accumulated cycle times reach the set times, none of the links has crc, the links are searched for being isolated, and if yes, the isolated links are subjected to the operation of isolation removal;
if a certain cycle is detected without crc error count, the cycle count will continue with +1 and continue with the next cycle.
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