Identify the master switch from the appearance

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The S2750, S5700, S6700, and S3700 (PoE) switches have a mode switching button for setting the system mode. You can press the button to switch a switch to the stack mode. If a switch function as the master switch in a stack, interface indicators on the switch blink.

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Check the Stack ID of a switch through indicators
For the S2700, S3700, S5700SI, S5710-X-LI, S5720SI, S5720S-SI, S5700EI, S5700HI, S6720EI, and S6700EI, after the more switching button on the front panel of a switch is pressed and turns red, the port indicators on the front panel indicate the stack ID of the switch. For other models, after the mode switching button on the front panel of a switch is pressed, the port indicators on the front panel indicate the stack ID of the switch. For non-master switches: Switch with the stack ID ranging from 1 to 8: The sequence number of the port indicator that is steady on indicates the stack ID of the switch. For example, if the first port indicator is steady on, the stack ID is 1. If the second port indicator is steady on, the stack ID is 2. Switch with stack ID 0: The number of port indicators that are steady on indicates the number of member devices supported by the product. For example, if the first nine port indicators are steady on, the product supports nine member switches in a stack, and the stack ID of the local switch is 0. For the master switch: The stack ID indicator is blinking. The method to check the stack ID on the master switch is the same as that used on non-master switches.

How do I identify different fibers from their appearances
Optical fibers are classified into multimode and single-mode optical fibers: - Multimode optical fibers can be used with multimode optical modules to implement low-cost, short-distance transmission. Multimode optical fibers are classified into OM1, OM2, OM3, and OM4 types. OM1 and OM2 optical fibers are usually orange, whereas OM3 and OM4 optical fibers are usually light green. For specifications of various optical fibers, see the text printed on optical fibers. - Single-mode optical fibers, usually G.652 fibers, can be used with single-mode optical modules to implement long-distance transmission. Single-mode optical fibers are yellow.

Identify the master and standby switches in a stack of S series switches
You can identify the master and standby switches in a stack of S series switches using either the CLI or indicator method. 1. CLI Run the display stack command to check the stack information, including the stack topology, roles of stack member switches, MAC address, and priority. 2. Indicators Press the MODE button on any member switch to change the mode status indicator to the stack mode. You can determine the stack IDs of the master switch and member switches through the status of service port indicators. Note: a. On an S5700EI, S5700SI, S5710-C-LI, S6700, or S5700HI switch, the stack mode status indicator shows the stack and speed modes. After you press the MODE button, the indicator is steady red and off after 45 seconds, indicating that the switch enters the stack mode. b. The S2720, S2750, S5700-LI, S5710-X-LI, S5710EI, S5720SI, S5720S-SI, and S6720EI switches have an independent stack mode indicator (STCK indicator). After you press the MODE button, the indicator is steady green or blinking, and then off in 45 seconds, indicating that the switch enters the stack mode. If the service port indicator is steady green, the member switch is a non-master switch. If the service port indicator blinks green, the member switch is the master switch. a. If the indicator of a port is steady on or blinking, the number of this port is the stack ID of the switch. b. If the first nine port indicators of a switch are steady on or blink, the stack ID of the switch is 0. To identify the standby switch, run the display stack command to check the stack ID of the standby switch and then check the status of the service port indicators.

Appearance and structure of an S series switch
For the appearance and dimensions of an S series switch, see "Appearance and Structure" in the Product Description or Hardware Description. You can also use Enterprise Network Product Hardware Query Tool to query the appearance and dimension of a specified model. For the product description of the S1700, see < S1700 Products Description >. For the hardware description of the S2700, see < S2700 Hardware Description >. For the hardware description of the S3700, see < S3700 Hardware Description >. For the hardware description of the S5700, see < S5700 Hardware Description >. For the hardware description of the S6700, see < S6700 Hardware Description >. For the hardware description of the S600, see < S600 Hardware Description >. For the hardware description of the S9300 and S9300E, see < S9300&S9300E Hardware Description >. For the hardware description of the S7700, see < S7700 Hardware Description >. For the hardware description of the S9700, see < S9700 Hardware Description >. For the hardware description of the S12700, see < S12700 Hardware Description >.

How to copy files from the master MPU to the slave MPU on an S series modular switch
To copy files from the master MPU to the slave MPU on an S series modular switch, run the copy source-filename destination-filename command. Set source-filename to the storage path on the master MPU and destination-filename to the storage path on the slave MPU. copy test.txt slave#flash:/ Copy flash:/test.txt to slave#flash:/test.txt?[Y/N]:y 100% complete. Info: Copied file flash:/test.txt to slave#flash:/test.txt...Done.

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