CN116582498A - Method for automatically adjusting port rate of switch to connect other network equipment - Google Patents

Abstract

The invention provides a method for a switch to automatically adjust the port rate to connect to other network devices, including: the switch detects its own connection status, and judges whether it needs to establish a connection with other network devices; when it needs to establish a connection with other network devices, the switch uses I2C The communication method accesses the memory of its own optical module to obtain the nominal rate of the optical module; the switch adjusts the port rate that meets the nominal rate of the optical module to establish a connection with other network devices according to its own port rate grade. The beneficial effect of the present invention is that the port rate of the switch can be adjusted according to the optical module of the switch so as to realize fast connection with other network devices.

Description

A method for a switch to automatically adjust port speed to connect other network devices

technical field

The invention relates to the technical field of switches, in particular to a method for a switch to automatically adjust port speeds to connect to other network devices.

Background technique

A switch is a network device used for electrical signal forwarding. It can provide an exclusive electrical signal path for any two network nodes connected to the switch. The most common switch is an Ethernet switch.

With the rapid development of science and technology, people's demand for network communication speed is increasing, and the speed of network equipment has developed from 100M and 1000M to 10M or even higher. At present, the common 10-Gigabit transmission method is to use optical fiber and corresponding photoelectric conversion equipment with equipment that supports 10-Gigabit forwarding, such as a 10-Gigabit switch as a transit device, a 10-Gigabit optical module as a photoelectric conversion device, and an optical fiber as a transmission medium.

However, not all 10 Gigabit switches currently support the auto-negotiation function of the port rate. When the switch does not support the port rate auto-negotiation, it is not convenient for the management and use of the switch: 1. If the peer rate changes, the connection will be disconnected. Only by modifying the rate can it be managed again; 2. When the switch is connected to other network devices, the rate needs to be manually set, which is inconvenient to use. This defect mainly comes from the limitation of the switching chip used by the switch.

Contents of the invention

In order to solve the problems in the prior art, the present invention provides a method for a switch to automatically adjust the port rate to connect to other network devices, which can adjust the port rate grade of the switch according to the nominal rate of the optical module of the switch so as to realize fast communication with other network devices. The connection solves the problems in the prior art that when the switch does not support port rate auto-negotiation, the rate changes and the connection will be disconnected, and the rate needs to be manually set when the switch is connected to other network devices, which is inconvenient to use.

A method for automatically adjusting the port speed of a switch to connect to other network devices of the present invention comprises the following steps:

Step 1: The switch detects its own connection status and determines whether it needs to establish a connection with other network devices;

Step 2: When it is necessary to establish a connection with other network devices, the switch accesses the memory of its own optical module through I2C communication to obtain the nominal rate of the optical module;

Step 3: The switch adjusts the port rate that conforms to the nominal rate supported by the optical module according to its own port rate level to establish a connection with other network devices.

The present invention is further improved, and in said step 1, the following steps are also included,

Step 101: the switch detects whether there is an optical signal in its own port;

Step 102: When the switch detects that there is an optical signal in its own port, the switch detects whether it has successfully established a connection with other network devices;

Step 103: When the switch detects that it has not successfully established a connection with other network devices, the switch detects whether the current port rate of the switch to attempt to establish a connection with other network devices has exceeded the first set time;

Step 104: When the switch detects that its current port rate attempt to establish a connection with other network devices does not exceed the first set time, the switch records its current port rate level.

The present invention is further improved, in said step 3, also includes the following steps,

Step 301: The switch judges whether its current port rate class conforms to the port rate supported by the nominal rate of the optical module;

Step 302: When the switch judges that its current port rate class conforms to the port rate supported by the nominal rate of the optical module, the switch detects whether the current port rate attempt of the switch to establish a connection with other network devices has exceeded the first set time;

Step 303: When the switch detects that its current port rate attempt to establish a connection with other network devices has not exceeded the first set time, the switch adjusts the port rate level that meets the nominal rate of the optical module according to its own port rate level, and continues Establish connections with other network devices.

The present invention is further improved. In the step 1, when there is no need to establish a connection with other network equipment, the switch prompts that there is no need to establish a connection with other network equipment.

The present invention is further improved. In the step 101, when the switch detects that there is no optical signal in its own port, the switch prompts that there is no other network device to be connected.

The present invention is further improved. In the step 102, when the switch detects that it has successfully established a connection with other network devices, the switch prompts that the connection has been completed.

The present invention makes a further improvement. In the step 103, when the switch detects that the current port rate of the switch itself has attempted to establish a connection with other network equipment for more than the first set time, the switch detects that the current port rate of the switch itself attempts to establish a connection with other network equipment. Whether the connection establishment exceeds the second set time, if it does not exceed the second set time, execute step 101; if it exceeds the second set time, the switch determines that other network devices that are trying to establish a connection do not match the switch, and do not proceed connection, the initial setting value of the first setting time is 2 seconds, and the initial setting value of the second setting time is 8 seconds.

The present invention is further improved. In the step 301, when the switch judges that its current port rate grade does not meet the port rate supported by the nominal rate of the optical module, it directly executes the step 303.

The present invention makes a further improvement. In the step 302, when the switch detects that the current port rate of the switch is trying to establish a connection with other network devices for more than the first set time, the switch continues to try to establish a connection with other network devices.

The present invention makes a further improvement. In the step 303, when the switch has adjusted all the port rates that meet the nominal rate support of the optical module according to its own port rate level and fails to establish a connection with other network devices, return to the execution step 1.

The beneficial effects of the present invention are: a method for automatically adjusting the port rate of a switch to connect to other network devices provided by the present invention, the switch obtains the nominal rate of its own optical module according to its own port rate grade, and then adjusts the switch to meet the rate of the optical module The port speed grade within the nominal range continues to try to establish connections with other network devices, so as to achieve fast connections with other network devices, and solves the problem of speed changes when the switch does not support port speed auto-negotiation in the prior art. When disconnection occurs and the switch is connected to other network devices, it is necessary to manually set the rate and it is not convenient to use.

Description of drawings

Fig. 1 is the flow chart of the method for a kind of switch automatically adjusting port rate of the present invention to connect other network devices;

Fig. 2 is the flow chart of the method for a kind of switch automatically adjusting port rate of the present invention to connect other network devices;

Fig. 3 is the flow chart of the method for a kind of switch automatically adjusting port rate of the present invention to connect other network devices;

Fig. 4 is a network deployment principle diagram of a method for automatically adjusting the port rate of a switch to connect to other network devices according to the present invention;

Fig. 5 is a schematic diagram of the communication between the switch and its own optical module according to the present invention.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

Referring to Fig. 1-5, a kind of method that switch automatically adjusts port rate to connect other network equipments of the present invention comprises the following steps:

Step 1: The switch detects its own connection status to determine whether it needs to establish a connection with other network devices; when it does not need to establish a connection with other network devices, the switch prompts that it does not need to establish a connection with other network devices.

Step 2: When it is necessary to establish a connection with other network devices, the switch accesses the memory of its own optical module through I2C communication to obtain the nominal rate of the optical module.

Step 3: The switch adjusts the port rate that conforms to the nominal rate supported by the optical module according to its own port rate level to establish a connection with other network devices.

Please refer to Figure 4. In the construction of the current 10G network system, optical fibers are generally used as the transmission medium, 10G switches are used as data transfer devices, and optical modules are used as intermediate devices for connecting optical fibers to 10G switches. Switches and other network devices need to be connected. Rate configuration, the connection can be successful only when the rate is consistent, and other network devices can be other switches or routers. Among them, the optical module, also known as SFP (Small Form Pluggable), can be simply understood as an upgraded version of GBIC (abbreviation for Gigabit Interface Converter), which is an interface device that converts gigabit electrical signals into optical signals, and can be hot-swapped.

In this embodiment, the optical module conforms to the SFF-8472 protocol. The SFF-8472 protocol stipulates that there are two EEPROMs in the optical module for the manufacturer to store information about the optical module, and the addresses are A0H and A2H respectively. Among them, A0H is used to store the specification information of the optical module, including transceiver type, supplier, supported rate and link length, etc. EEPROM, full name (Electrically Erasable Programmable Read-Only Memory), that is, electrically erasable programmable read-only memory, is a memory chip that does not lose data after power failure. Part of the SFF-8472 agreement is as follows:

Among them, the 12th address bit information is: rate nominal. The upper limit of the maximum rate supported by the optical module can be obtained, thereby limiting the port rate grade configured by the switch.

In this embodiment, the EEPROM of the optical module can be accessed through the I2C communication method, and the relevant information can be read according to the address bits, which can be realized by simulating I2C through the corresponding GPIO pins on the switch chip or by including the I2C function on the switch chip. I2C communication communicates through two bidirectional I/O lines, which are the communication between SDA (serial data line) and SCL (serial clock line) and the optical module. Please refer to Figure 5 for a schematic diagram of the interactive communication. Among them, the I2C communication mode refers to the way in which two lines - serial data (SDA) and serial clock (SCL) lines transmit information between devices connected to the bus. Each device has a unique address identification (whether it is a microcontroller - MCU, LCD driver, memory or keyboard interface), and can be used as a transmitter or receiver (determined by the function of the device), the LCD driver is just A receiver, while the memory can both receive and send data. In addition to transmitters and receivers, devices can also be considered as masters or slaves when performing data transfers. The master is the device that initiates the data transfer on the bus and generates the clock signals that allow the transfer. At this point, any addressed device is considered a slave.

Please refer to Figure 2, in the step 1, the following steps are also included,

Step 101: the switch detects whether there is an optical signal in its own port; when the switch detects that there is no optical signal in its own port, the switch prompts that no other network device can be connected.

Step 102: When the switch detects that there is an optical signal in its own port, the switch detects whether it has successfully established a connection with other network devices; when the switch detects that it has successfully established a connection with other network devices, the switch prompts that the connection has been completed. In this embodiment, the detection of the optical signal indicates that other network devices have been physically connected to the switch.

Step 103: When the switch detects that it has not successfully established a connection with other network devices, the switch detects whether the current port rate of the switch itself has attempted to establish a connection with other network devices for more than the first set time; When trying to establish a connection with other network devices has exceeded the first set time, the switch detects whether the port rate of the switch itself is trying to establish a connection with other network devices for more than the second set time, and if it does not exceed the second set time, go to step 101 ; If the second setting time is exceeded, the switch will determine that other network devices trying to establish a connection do not match the switch, and no longer connect. The initial setting value of the first setting time is 2 seconds, and the second setting time is 2 seconds. The initial setting is 8 seconds.

Step 104: When the switch detects that its current port rate attempt to establish a connection with other network devices does not exceed the first set time, the switch records its current port rate level. In this embodiment, the switch itself has multiple built-in port rate grades.

Please refer to Figure 3, in the step 3, the following steps are also included,

Step 301: The switch judges whether its current port speed grade conforms to the port speed supported by the nominal speed of the optical module; when the switch judges that its current port speed grade does not conform to the port speed supported by the nominal speed of the optical module, it directly executes step 303.

Step 302: When the switch judges that its current port rate grade conforms to the port rate supported by the nominal rate of the optical module, the switch detects whether the current port rate of the switch itself is trying to establish a connection with other network devices for more than the first set time; when the switch detects When the current port rate attempt to establish a connection with other network devices has exceeded the first set time, the switch continues to try to establish a connection with other network devices.

Step 303: When the switch detects that its current port rate attempt to establish a connection with other network devices has not exceeded the first set time, the switch adjusts the port rate level that meets the nominal rate of the optical module according to its own port rate level, and continues Establish connections with other network devices; among them, when the switch adjusts all the port speeds that meet the nominal rate support of the optical module according to its own port speed level and fails to establish a connection with other network devices, return to step 1. In this embodiment, the switch itself has multiple built-in port rate grades. For example, if the switch has built-in three port speed grades of 1Gb/s, 2Gb/s, and 10Gb/s, and the nominal speed of the optical module is 5Gb/s, then only the two port speed grades of 1Gb/s and 2Gb/s need to be adjusted To establish a connection with other network devices, there is no need to try the 10Gb/s port speed grade, so as to realize fast connection with other network devices.

As can be seen from the above, the beneficial effects of the present invention are: a method for automatically adjusting the port rate of a switch to connect to other network devices provided by the present invention, the switch obtains the rate rating of its own optical module according to its own port rate grade, and then adjusts the switch to Conforms to the port rate grade within the nominal range of the optical module rate, and continues to try to establish connections with other network devices, so as to achieve fast connections with other network devices, and solves the problem in the prior art when the switch does not support port rate auto-negotiation. If there is a change, there will be a disconnection, and when the switch is connected to other network devices, it is necessary to manually set the rate and it is not convenient to use.

The specific implementations described above are preferred implementations of the present invention, and are not intended to limit the specific implementation scope of the present invention. The scope of the present invention includes and is not limited to the specific implementations. All equivalent changes made according to the present invention are Within the protection scope of the present invention.

Claims (10)

1. A method for automatically adjusting port rate of a switch to connect with other network devices is characterized by comprising the following steps,

step 1: the switch detects the connection state of the switch and judges whether connection with other network equipment is required to be established;

step 2: when connection with other network equipment is required to be established, the switch accesses a memory of the own optical module through an I2C communication mode to obtain the rate nominal of the optical module;

step 3: and the switch adjusts the port rate which accords with the nominal support of the optical module rate according to the port rate grade of the switch and establishes connection with other network equipment.

2. The method for automatically adjusting port rate for connecting other network devices according to claim 1, wherein in said step 1, further comprising the step of,

step 101: the switch detects whether an optical signal exists in a port of the switch;

step 102: when the switch detects that the optical signal exists in the port of the switch, the switch detects whether the switch successfully establishes connection with other network equipment or not;

step 103: when the switch detects that the switch does not successfully establish connection with other network equipment, the switch detects whether the port rate of the switch tries to establish connection with other network equipment or not exceeds a first set time;

step 104: when the switch detects that the port rate of the switch tries to establish connection with other network equipment at this time does not exceed the first set time, the switch records the current port rate grade of the switch.

3. The method for automatically adjusting port rate for connecting other network devices according to claim 2, wherein in said step 3, further comprising the step of,

step 301: the exchanger judges whether the current port rate grade accords with the port rate nominally supported by the optical module rate or not;

step 302: when the switch judges that the current port rate grade of the switch accords with the port rate nominally supported by the optical module rate, the switch detects whether the current port rate of the switch tries to establish connection with other network equipment or not exceeds a first set time;

step 303: when the switch detects that the port rate of the switch tries to establish connection with other network equipment at this time does not exceed the first set time, the switch adjusts the port rate grade which accords with the nominal support of the optical module rate according to the port rate grade of the switch, and continues to establish connection with other network equipment.

4. The method for automatically adjusting port rates for connection to other network devices by a switch as recited in claim 3, wherein: in the step 1, when no connection needs to be established with other network devices, the switch prompts that no connection needs to be established with other network devices.

5. The method for automatically adjusting port rates for connection to other network devices by a switch according to claim 4, wherein: in the step 101, when the switch detects that there is no optical signal in its own port, the switch prompts that no other network device is connectable.

6. The method for automatically adjusting port rates for connection to other network devices by a switch according to claim 5, wherein: in said step 102, when the switch detects that itself has successfully established a connection with another network device, the switch prompts that the connection has been completed.

7. The method for automatically adjusting port rates for connection to other network devices by a switch according to claim 6, wherein: in the step 103, when the switch detects that the current port rate attempts to establish connection with other network devices for more than a first set time, the switch detects whether the current port rate attempts to establish connection with other network devices for more than a second set time, and if the current port rate attempts to establish connection with other network devices for more than the second set time, the switch executes the step 101; if the second set time is exceeded, the switch judges that other network devices attempting to establish connection are not matched with the switch and no connection is performed, the initial set value of the first set time is 2 seconds, and the initial set value of the second set time is 8 seconds.

8. The method for automatically adjusting port rates for connection to other network devices by a switch according to claim 7, wherein: in the step 301, when the switch determines that the current port rate level does not conform to the port rate nominally supported by the optical module rate, step 303 is directly performed.

9. The method for automatically adjusting port rates for connection to other network devices by a switch according to claim 8, wherein: in the step 302, when the switch detects that the port rate of the switch itself attempts to establish connection with other network devices for more than a first set time, the switch continues to attempt to establish connection with other network devices.

10. The method for automatically adjusting port rates for connection to other network devices by a switch according to claim 9, wherein: in step 303, when the switch adjusts all port rates meeting the nominal support of the optical module rate according to the port rate level thereof, and the connection with other network devices is not successfully established, step 1 is executed again.