CN104038426A - Network switch and data updating method - Google Patents
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Abstract
The invention provides a network switch and a data updating method. The data exchanger comprises a plurality of connection ports, a memory unit and a processing unit. The plurality of connection ports are connected with a plurality of network devices, wherein the network devices are respectively provided with medium access control addresses. The memory unit is used for storing an address check table, wherein the address check table is used for recording a medium access control address of the network device and a corresponding connection port. The processing unit is connected with the connection port and the memory unit. When one of the connection ports is in an interrupted connection state, the processing unit deletes all medium access control addresses of the network devices corresponding to the connection port in the interrupted connection state in the address check table.
Description
Technical field
The present invention relates to a kind of communication device, and be particularly related to a kind of network switch and data-updating method.
Background technology
Generally speaking, network switch (Network Switch) all can be set up a medium access control (Media Access Control, MAC) address check table (look-up table), for example deposit in the memory of network switch, be used for the MAC address learning of the source of the grouping receiving (source) (learn) to enter in address check table, and utilize the destination in grouping to determine the flow direction of dividing into groups.And during the new MAC Address of one of the every study/record of MAC Address check table, just can take the part in memory.For the service efficiency of memory is improved, in known technology, normally used mode is, every for example, through a setting-up time (a few minutes or several hours), whether the address that just checks to learn has renewal, if do not have renewal in above-mentioned setting-up time, judge this address not exist and delete address and relevant information, to discharge storage space, such is referred to as an Ageing Treatment (aging) as rule.
But use above-mentioned Ageing Treatment scheduler check table still having several shortcomings.For example, when the address failure of having learnt, for example, while having the main frame shutdown of this MAC Address, in the time of must waiting until above-mentioned setting-up time, when namely Ageing Treatment mechanism occurs, the address of the inefficacy in address check table just can be eliminated.Therefore, the release that memory cannot be instant, and cause the efficiency of use comparatively low.
Another situation is, the main frame of the address of having learnt by migration elsewhere (for example, with another connectivity port interconnection network interchanger, or connect by other network switchs), and in the setting-up time of Ageing Treatment, or the address of the main frame of migration elsewhere is by from new study, above-mentioned address is still present in address learning list.Under these circumstances, the grouping that original destination is address above mentioned still can constantly be sent to corresponding connectivity port, and cannot immediately discover above-mentioned address, loses efficacy.
Summary of the invention
The invention provides a kind of network switch and data-updating method, the address information in can more effective scheduler check table.
Network switch of the present invention comprises a plurality of connectivity ports, memory cell and processing unit.A plurality of connectivity ports connect a plurality of network equipments, and wherein network equipment has respectively Media Access Control address.Memory cell is in order to memory address check table, and wherein address check table is in order to record Media Access Control address and the corresponding connectivity port connecting of network equipment.Processing unit connects connectivity port and memory cell.Wherein, when the connection status of one of connectivity port is when interrupting, processing unit is deleted the Media Access Control address of all network equipments that are the connectivity port of interrupting corresponding to connection status in address check table.
In one embodiment of this invention, above-mentioned network equipment is respectively main frame or route device.
In one embodiment of this invention, address check table also comprises a plurality of Ageing Treatment parameters, correspond respectively to the Media Access Control address of network equipment, when processing unit within the scheduled time not when thering is the network equipment of one of Media Access Control address and receive network packet, processing unit increases the numerical value corresponding to the Ageing Treatment parameter of Media Access Control address.And when one of timeliness processing parameter is greater than a set point, processing unit is deleted corresponding to the Media Access Control address that is greater than the Ageing Treatment parameter of set point.
In the above embodiment of the present invention, when the connection status of one of connectivity port is when interrupting, this processing unit is more deleted these Ageing Treatment parameters of all these network equipments that are this connectivity port of interrupting corresponding to this connection status in this address check table.
In one embodiment of the invention, network switch also comprises a detecting unit, is coupled to connectivity port and processing unit, in order to detect the connection status of connectivity port.When the connection status of one of connectivity port is interruption, the connectivity port transmission notification signal that the corresponding connection status of detecting unit is interruption is to processing unit.Wherein, when processing unit reception notification signal, processing unit is deleted the Media Access Control address of all network equipments that are the connectivity port of interrupting corresponding to connection status in address check table according to notification signal.
Data-updating method of the present invention, is applicable to network switch, and described data-updating method comprises the following steps.First, with a plurality of connectivity ports, connect a plurality of network equipments, wherein network equipment has respectively a Media Access Control address.Then, memory address check table, wherein address check table is in order to record Media Access Control address and the corresponding connectivity port connecting of network equipment.When the connection status of one of connectivity port is when interrupting, delete the Media Access Control address of all network equipments that are the link port that interrupts corresponding to connection status in address check table.
Based on above-mentioned, the invention provides a kind of network switch and data-updating method, can be according to the connection status of the connectivity port of network switch, the address check table in immediate updating network switch, can more promote the service efficiency of the memory cell in network switch.
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate accompanying drawing to be described in detail below.
Accompanying drawing explanation
Fig. 1 is according to the device calcspar of network switch that one embodiment of the invention illustrates.
Fig. 2 is according to the graph of a relation of network switch that one embodiment of the invention illustrates and network and network equipment.
Fig. 3 is according to the process step figure of data-updating method that one embodiment of the invention illustrates.
[symbol description]
10: network switch
111～11n: connectivity port
120: memory cell
130 processing units
210～230: main frame
30: network
S301～S303: step
Embodiment
Fig. 1 is according to the device calcspar of network switch that one embodiment of the invention illustrates.Please refer to Fig. 1, data exchange unit 10 comprises connectivity port 111～11n, memory cell 120 and processing unit 130.Connectivity port 111～11n is in order to connect a plurality of network equipments, and wherein network equipment has respectively medium access control (Media Access Control, MAC) address, such as main frame or route device etc.It should be noted that, connectivity port 111～11n not only connects above-mentioned a plurality of network equipment in man-to-man mode, and single connecting interface (such as one of connectivity port 111～11n) also can connect a plurality of network equipments by connecting the modes such as another network switch.
Memory cell 120 is in order to memory address check table, and wherein address check table for example, in order to record Media Access Control address and the corresponding connectivity port (one of connectivity port 111～11n) connecting of network equipment.Processing unit 130 connects connectivity port 111～11n and memory cell 120.Wherein, when the connection status (link status) of one of connectivity port 111～11n is when interrupting (link-off), processing unit 130 is deleted the Media Access Control address of all network equipments that are the connectivity port of interrupting corresponding to connection status in address check tables.
And in an embodiment of the present invention, above-mentioned network switch 10 also comprises a detecting unit (not illustrating), be coupled to connectivity port 111～11n and processing unit 130, in order to detect the connection status of connectivity port 111～11n.When the connection status of one of connectivity port 111～11n is interruption, connectivity port (for example one of connectivity port 111～11n) the transmission notification signal that the corresponding connection status of detecting unit is interruption is to processing unit 130.For example, and when processing unit 130 receives above-mentioned notification signal, 130 of processing units can be deleted according to notification signal the Media Access Control address of all network equipments that are the connectivity port (one of connectivity port 111～11n) of interrupting corresponding to connection status in the address check table of depositing in memory cell 120.
And in an embodiment of the present invention, network switch 10 also has the mechanism of Ageing Treatment (aging) simultaneously.That is the address check table of storing also comprises a plurality of Ageing Treatment parameters, correspond respectively to the Media Access Control address of network equipment in memory cell 120.When processing unit 130 within the scheduled time not when thering is the network equipment of one of Media Access Control address and receive a network packet, the numerical value that processing unit 130 increases corresponding to the Ageing Treatment parameter of Media Access Control address.And be greater than a set point when one of timeliness processing parameter, for example during a setting-up time, processing unit 130 is deleted corresponding to the Media Access Control address that is greater than the Ageing Treatment parameter of set point.
And when the connection status of one of connectivity port 111～11n is when interrupting, processing unit 130 is more deleted the Ageing Treatment parameter of all network equipments that are the connectivity port of interrupting corresponding to connection status in address check table.In fact, in address check table, also corresponding Media Access Control address is stored relevant parameter, for example the parameter such as virtual region net (Virtual Area Network, VLAN) or priority level (Priority).When deleting the Ageing Treatment parameter of Media Access Control address and correspondence, these parameters are also simultaneously deleted.
With next with embodiment illustration technology contents of the present invention.The partial content that following table 1 is the address check table of the present invention in an embodiment:
| ? | Connectivity port | Ageing Treatment parameter | MAC Address |
| 0 | Connectivity port 112 | 1 | MAC?b |
| 1 | ? | ? | ? |
| 2 | Connectivity port 112 | 2 | MAC?c |
| 3 | Connectivity port 111 | 0 | MAC?a |
| 4 | ? | ? | ? |
| 5 | ? | ? | ? |
| 6 | Connectivity port 11n | 3 | MAC?z |
| 7 | Connectivity port 113 | 4 | MAC?e |
| 8 | Connectivity port 113 | 2 | MAC?d |
| 9 | Connectivity port 11n | 0 | MAC?x |
| 10 | ? | ? | ? |
| … | ? | ? | ? |
| M-2 | Connectivity port 11n | 1 | MAC?y |
| M-1 | Connectivity port 113 | 6 | MAC?f |
| M | ? | ? | ? |
Table 1
In the present embodiment, address check table has M+1 memory space (corresponding to M+1 row).For simple declaration, in above-mentioned table 1, only list connectivity port, Ageing Treatment parameter and medium access control (hereinafter referred to as MAC) address.And in the present embodiment, network switch 10 utilizes respectively connectivity port 111 to connect the network equipment that MAC Address is a; It is two network equipments of b, c that connectivity port 112 connects MAC Address; And connectivity port 11n connection MAC Address is the network equipment of x, y and z.The information of above-mentioned MAC Address and corresponding connectivity port is due to the asynchronism(-nization) of interconnection network interchanger 10, and deposits in respectively in each memory space as shown in table 1.Ageing Treatment parameter increases with time, for example, within one second, increase numerical value 1.For example, when one of timeliness processing parameter surpasses a set point (60), 130 of processing units empty the memory space that comprises the Ageing Treatment parameter that surpasses set point.
When the connection state of connectivity port 113 is interruption, (for example by detecting unit, detects and obtain, and transmit notification signal to processing unit 130), 130 of processing units start anew to scan M+1 memory space by address check table, and all information connecting by connectivity port 113 (for example Ageing Treatment parameter and MAC Address) is all deleted, to discharge the space of memory cell 120.Address check table after above-mentioned information after deletion is as shown in table 2 below:
| ? | Connectivity port | Ageing Treatment parameter | MAC Address |
| 0 | Connectivity port 112 | 1 | MAC?b |
| 1 | ? | ? | ? |
| 2 | Connectivity port 112 | 2 | MAC?c |
| 3 | Connectivity port 111 | 0 | MAC?a |
| 4 | ? | ? | ? |
| 5 | ? | ? | ? |
| 6 | Connectivity port 11n | 3 | MAC?z |
| 7 | ? | ? | ? |
| 8 | ? | ? | ? |
| 9 | Connectivity port 11n | 0 | MAC?x |
| 10 | ? | ? | ? |
| … | ? | ? | ? |
| M-2 | Connectivity port 11n | 1 | MAC?y |
| M-1 | ? | ? | ? |
| M | ? | ? | ? |
Table 2
That is to say, in address check table the 7th, 8 of original memory address d, e and f and M-1 memory space all because above-mentioned deletion action empties, but not the numerical value of Ageing Treatment parameter just empties corresponding memory space over set point by the time.For example, due to network equipment (main frame) shutdown or the action of pulling out from corresponding connectivity port all can cause connection status to interrupt, so the address check table in network switch 10 can be by above-mentioned deletion/the empty storage space of the more instant release memory cell 120 of action.The connectivity port of more then pulling out due to original link main frame may connect other main frame after breaking with main frame, and in such a case, above-mentioned action also can reduce the possibility of grouping misinformation.With next, will coordinate drawings and Examples that above-mentioned situation is described.
Fig. 2 is according to the graph of a relation of network switch that one embodiment of the invention illustrates and network and network equipment.Please refer to Fig. 2, in the present embodiment, network equipment is main frame 210～230, and main frame 210～230 is connected to network switch 10 by connectivity port 111～113 respectively, and wherein 20 of network switchs are connected between main frame 220 and the connectivity port 112 of network switch 10.And in the present embodiment, main frame 230 is via user's control, from connectivity port, 113 pull out, then pass through network switch 20 identical with main frame 220 is connected with the connectivity port 112 of network switch 10.And on the connectivity port 113 being originally connected with main frame 230 because of user's control connection main frame 240.
If network switch 10 only has above-mentioned Ageing Treatment mechanism,, before the setting-up time of Ageing Treatment mechanism, in the address check table in network switch 10, still record the MAC Address of main frame 230 corresponding to the record of connectivity port 113.Therefore, before the setting-up time of Ageing Treatment mechanism, network switch 10 still can be received by network 30 all, and destination is that the grouping of the MAC Address of main frame 230 is sent to connectivity port 113.The grouping that receives the non-MAC Address for main frame 240 in destination due to main frame 240 will directly abandon, and therefore above-mentioned grouping can become the grouping of loss.Until while arriving the setting-up time of network switch 10, or the address of main frame 230 during again by network switch 10 (such as main frame 230, initiatively sending a message to network equipment of far-end etc.), network switch 10 just can start Ageing Treatment mechanism, or the message initiatively sending according to main frame 230, remove the MAC Address of main frame 230, or upgrade MAC Address and the corresponding connectivity port (connectivity port 112) thereof of main frame 230.Above-mentioned setting-up time may be according to status of implementation and difference, when setting-up time is while waiting the longer time such as one hour, it is that the source (source) of the grouping of main frame 230 may retransmit many times that destination is sent in tendency to develop, still above-mentioned grouping cannot be passed to main frame 230.Main frame 230 initiatively sends message to the time of network switch 10 to be determined in the activity of main frame 230 according to user, also cannot estimate accurately.
And network switch 10 in embodiment illustrated in fig. 2 is while having technology contents proposed by the invention, when user is from connectivity port 113 when main frame 230 is pulled out, network switch 10 just can detect obtain connectivity port 113 connection status for interrupting, and then the MAC Address being connected with connectivity port 113 in the check table of scan address, that is the MAC Address of main frame 230, and delete its address and relevant information.
And when network switch 10 receives destination and is the grouping of MAC Address of main frame 230 from network 30, owing to not having any information of the MAC Address of main frame 230 in address check table, 10 of network switchs can transmit above-mentioned grouping to broadcast the mode of (Broadcast) to connectivity port 111～113.And when main frame 230 receives this grouping, main frame 230 just can be replied a message to network switch 10, network switch 10 can be judged and learn that current network switch 10 is to be connected to main frame 230 with connectivity port 112.Network switch 10 is scheduler check table by this just, by the content record of the MAC Address of main frame 230 and corresponding connectivity port 112 in position detection table.Thus, by content proposed by the invention, the scheduler check table that 10 of network switchs can be more instant, improves the operation efficiency of storage space, more can reduce the possibility of grouping misinformation.
Above-mentioned content is only the illustration of carrying out according to one embodiment of the invention, the actual state that detailed implementation step and flow process may be when implementing and changing to some extent, and the present invention is not limited to above-mentioned content.
It is worth mentioning that, the processing unit in the present invention (processing unit 130 as shown in Figure 1) can be realized by entity circuit, also can be realized by general purpose processor collocation program code, and the present invention is not limited to above-mentioned.But the processing unit 130 of being realized by entity circuit is better than utilizing the execution mode of processor collocation program code at the execution speed of the action that address check table is upgraded/deleted.And in the mentioned detecting unit of above-described embodiment, those skilled in the art also can simply change by the detecting element in current network switch, therefore,, with respect to the network switch in known technology, network switch provided by the present invention there is no increases too much hardware cost.
The present invention also provides a kind of data-updating method that is applicable to network switch.Fig. 3 is according to the process step figure of data-updating method that one embodiment of the invention illustrates.Please refer to Fig. 3, first, when step S301, with a plurality of connectivity ports, connect a plurality of network equipments, wherein network equipment has respectively a Media Access Control address.Then when step S302, memory address check table, wherein address check table is in order to record Media Access Control address and the corresponding connectivity port connecting of network equipment.At step S303, be also when the connection status of one of connectivity port is when interrupting, delete the Media Access Control address of all network equipments that are the link port that interrupts corresponding to connection status in address check table.The detailed implementation content of this method can be with reference to the explanation of above-mentioned Fig. 1～Fig. 2, and in which not repeat.
In sum, the invention provides a kind of network switch and data-updating method, can be not increase in the situation of too much hardware cost or computation complexity, according to the connection status of the connectivity port of network switch, address check table in immediate updating network switch, the service efficiency of the memory cell/memory in network switch is more promoted, and reduced the possibility of grouping misinformation simultaneously.Meanwhile, technology contents proposed by the invention also can with known technology in Ageing Treatment mechanism or other update mechanisms use, to reach more complete effectiveness.
Claims (10)
1. a network switch, is characterized in that, comprising:
A plurality of connectivity ports, connect a plurality of network equipments, and wherein these network equipments have respectively a Media Access Control address;
One memory cell, in order to store an address check table, wherein this address check table is in order to record Media Access Control address and corresponding this connectivity port connecting of these network equipments; And
One processing unit, connect these connectivity ports and this memory cell, wherein when the connection status of one of these connectivity ports is when interrupting, this processing unit is deleted the Media Access Control address of all these network equipments that are this connectivity port of interrupting corresponding to this connection status in this address check table.
2. network switch as claimed in claim 1, wherein:
These network equipments are respectively a main frame or a route device.
3. network switch as claimed in claim 1, wherein:
This address check table also comprises a plurality of Ageing Treatment parameters, correspond respectively to the Media Access Control address of these network equipments, when this processing unit within a scheduled time not when thering is this network equipment of one of these Media Access Control address and receive a network packet, this processing unit increases the numerical value corresponding to this Ageing Treatment parameter of this Media Access Control address;
When one of these Ageing Treatment parameters are greater than a set point, this processing unit is deleted corresponding to this Media Access Control address that is greater than this Ageing Treatment parameter of this set point.
4. network switch as claimed in claim 3, wherein:
When this connection status of one of these connectivity ports is when interrupting, this processing unit is also deleted these Ageing Treatment parameters of all these network equipments that are this connectivity port of interrupting corresponding to this connection status in this address check table.
5. network switch as claimed in claim 1, wherein said network switch also comprises:
One detecting unit, be coupled to these connectivity ports and this processing unit, in order to detect this connection status of these connectivity ports, when this connection status of one of these connectivity ports is interruption, this detecting unit to should connection status for transmitting a notification signal to this processing unit in this connectivity port of interrupting
Wherein, when this processing unit receives this notification signal, this processing unit is deleted the Media Access Control address of all these network equipments that are this connectivity port of interrupting corresponding to this connection status in this address check table according to this notification signal.
6. a data-updating method, is applicable to a network switch, it is characterized in that, described data-updating method comprises:
With a plurality of connectivity ports, connect a plurality of network equipments, wherein these network equipments have respectively a Media Access Control address;
Store an address check table, wherein this address check table is in order to record Media Access Control address and corresponding this connectivity port connecting of these network equipments; And
When the connection status of one of these connectivity ports is when interrupting, delete the Media Access Control address of all these network equipments that are this link port of interrupting corresponding to this connection status in this address check table.
7. data-updating method as claimed in claim 6, wherein:
These networks are respectively a main frame or a route device.
8. data-updating method as claimed in claim 6, wherein this address check table also comprises a plurality of Ageing Treatment parameters, corresponds respectively to these Media Access Control address; And after the step of this address check table of described storage, described data-updating method also comprises:
When within a scheduled time not when thering is this network equipment of one of these Media Access Control address and receive a network packet, increase the numerical value corresponding to this Ageing Treatment parameter of this Media Access Control address; And
When one of these Ageing Treatment parameters are greater than a set point, delete corresponding to this Media Access Control address that is greater than this Ageing Treatment parameter of this set point.
9. data-updating method as claimed in claim 8, wherein said this connection status when one of these connectivity ports is when interrupting, and the step of deleting the Media Access Control address of all these network equipments that are this link port of interrupting corresponding to this connection status in this address check table also comprises:
This that deletion is interruption corresponding to this connection status links these Ageing Treatment parameters of these network equipments of port.
10. data-updating method as claimed in claim 6, after the step of this address check table of wherein said storage, described data-updating method also comprises:
Detect this connection status of these connectivity ports, when this connection status of these connectivity ports is when interrupting, to should connection status producing a notification signal for this connectivity port of interrupting; And
According to this notification signal, delete the Media Access Control address of all these network equipments that are this link port of interrupting corresponding to this connection status in this address check table.
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| CN115412431A (en) * | 2021-05-10 | 2022-11-29 | 瑞昱半导体股份有限公司 | Network switch and abnormality detection method |
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| CN109819491B (en) * | 2019-03-21 | 2021-07-06 | 创新维度科技（北京）有限公司 | Handover control method, base station, and storage medium |
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| TWI505675B (en) | 2015-10-21 |
| TW201436509A (en) | 2014-09-16 |
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Application publication date: 20140910 |