Processing method and apparatus for media access control clauses

Abstract

The invention discloses a processing method for controlling item for medium access and device. The method comprises: separately setting priority identification for every media access control item; determining physical address of first medium access control item, determining the item priority according to priority identification of first medium access control item; if the second medium access control item has been written in determined physical address, then determining priority of the second medium access control item according to its priority identification; comparing the priorities of two medium access control item, processing the first medium access control item. In the invention, priorities of every MAC item are determined by setting priority identification of every MAC item, and by further comparing and determining if new MAC item is written in, which can enable the new MAC item not to be directly discarded, thereby guaranteeing MAC item writing-in for important service.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for processing media access control entries. Background technique [0002] The address of the sub-layer protocol of Media Access Control (abbreviated as MAC) is the hardware address burned in the network card (Network Interface Card, referred to as NIC). Among them, the first 24 digits, 0-23 digits, are allocated by each manufacturer; the last 24 digits, 24-47 digits, are the unique identifier of the organization, which is the identifier for identifying the LAN node; in particular, the 40th digit is the group broadcast address flag. [0003] Each device on the same subnet communicates through the MAC address, but before starting to communicate, each device does not know the MAC address of other devices, and each device needs to send an Address Resolution Protocol (ARP) broadcast to communicate with each other. Obtain the MAC address of other devices. After ...

AI Technical Summary

Problems solved by technology

It can be seen that this transformation is a compression mapping, that is, the space of the hash value is smaller than the space of the input value, and different input values ​​may hash to the same output value, that is, the hash value cannot be unique from accurately determine the input value

[0005] At the same time, at present, the MAC table is mainly managed by compressing a message of any length into a function of a fixed-length message digest, which causes the capacity of the MAC table to be less than 100%. In addition, if the capacity of the written MAC address If the capacity of the MAC table is exceeded, or a Hash conflict occurs in the written MAC address, the new MAC address will be discarded, and the new MAC address cannot be written.

For ordinary users, if the new MAC address cannot be written, the user's service will be interrupted; for the device, if the new MAC address assigned to it cannot be written, unpredictable problems will occur, for example, in When a Layer 3 interface is configured on a switch, if the allocated MAC address fails to be written into the MAC table due to Hash conflict or insufficient capacity, the Layer 3 interface of the switch will fail to communicate with the outside world.

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