A Method of Scanning and Repairing tcam Errors
An error repair and error technology, applied in the field of memory, can solve the problems of low efficiency, insufficient intelligence, no automatic scanning and monitoring mechanism of TCAM memory, etc., to achieve high efficiency and improve fault tolerance.
Active Publication Date: 2021-07-02
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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Problems solved by technology
[0003] At present, there is no automatic scanning and monitoring mechanism for TCAM memory. When it is found that the network traffic is not filtered according to the ACL rules, it is necessary to manually check which rule in the ACL table has a problem, and then locate the hardware entry. Specific location, then re-modify the rule or delete the rule and add it, and then send it to the TCAM table again
This method needs to rely on manual troubleshooting, the efficiency is low, the positioning time is long, it needs to consume a certain amount of manpower and time, and it is not smart enough
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[0027] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions protected by the present invention will be clearly and completely described below using specific embodiments and accompanying drawings. Obviously, the implementation described below Examples are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in this patent, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this patent.
[0028] This embodiment provides a method for TCAM error scanning and repairing, such as figure 1 As shown, the methods include:
[0029] S1, start the scanning process, read the data in the main TCAM one by one, and compare the read data with the data in the backup TCAM;
[0030] S2, when the data read in the primary TCAM is different from the data in the backup TCAM, trigger the error r...
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The invention provides a method for scanning and repairing TCAM errors. The method includes: starting a scanning process, reading data in the main TCAM one by one, and comparing the read data with data in the backup TCAM; when reading the data in the main TCAM When the data is different from the data in the backup TCAM, trigger the error repair mechanism, enter the error repair logic, clear the data in the main TCAM, and rewrite the data in the backup TCAM to the corresponding position of the main TCAM. The auxiliary TCAM and memory mirror two-level cache are applied to back up the data in the main TCAM, improve the fault tolerance rate, and can automatically repair any errors that may occur in the main TCAM, with high efficiency.
Description
technical field [0001] The invention relates to the field of memory, in particular to a method for scanning and repairing TCAM errors. Background technique [0002] Access Control List (ACL, Access Control List) is a list of interface instructions in the memory of switches and routers. Through the combination of various rules, it can control the data packets entering and leaving the port, so as to achieve the purpose of filtering network traffic. A network technical means of access control. In various high-end switches, routers and other network devices, ACL is one of the most important functions, and also one of the most critical technologies for realizing QoS. [0003] At present, there is no automatic scanning and monitoring mechanism for TCAM memory. When it is found that the network traffic is not filtered according to the ACL rules, it is necessary to manually check which rule in the ACL table has a problem, and then locate the hardware entry. specific location, and ...
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IPC IPC(8): G06F11/10
CPCG06F11/102G06F11/1064
Inventor 梁盛楠
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD