Cisco 3750 Stack

Preface:
The 3750 stack, unlike the 3550 stack, is a real stack. The Catalyst 3750 series uses StackWise technology and is an innovative stack architecture that provides a 32 Gbps stack interconnection, connect up to nine vswitches and integrate them into a unified, logical, and optimized device for integration, so that customers can deploy voice, video, and data applications with greater confidence, 3750 uses the backplane stack mode. The machine itself has a stack port that requires a dedicated stack line to achieve 32 Gbit/s bandwidth. After the switch is stacked, logically speaking, they belong to the same device. In this way, if you want to configure these switches, you only need to connect to any device and you can see other switches in the stack (3750 requires a dedicated stack cable for stacking, the product comes with 0.5 m stacked cables ).
I. Basic Requirements:
The ios version must be consistent with the dedicated stack module and stack cable, and the maximum number of stacks is 9.
Ii. Stack advantages:
High-density ports for ease of management (a switch is displayed during configuration, with different slot numbers)
Iii. Stack instances:
1: The stacked cables are physically connected. The connection method is master stack1, which is connected to slave stack2.
2: enable the master without any configuration. .
3: Server Load balancer is enabled.
4: No configuration is required. (After the line is plugged in, the system automatically stacks the election upon startup, and the master is highlighted)
Note: You can also configure stacks first, such as IP addresses and priorities.
4. Check the current stack status:
Show platform stack-manager all displays information about all swap stacks
Show switch: displays the summary of stack switches.
Show switch 1 displays vswitch 1 Information
Show switch detail: displays details of stack members.
Show switch neighbors: displays the complete information of stack neighbors.
Show switch stack-ports: displays the complete port information of the stack switch.
5. Notes
1. The model can be different, but the version must be the same
2. It is best to perform power-off operations, but it is also possible to perform power-off operations.
3. 3750 cannot be stacked with 3550
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There is an orange light in the stack's mouth, and the green light is on the ring.
After the stack is successful, you can use an address to manage the stack, but it is not feasible if you do not configure the stack.
Main configurations include:
1. Run the show cluster conditer command on the master stack switch (generally the top one) to view the MAC addresses of each stack switch (useful in the future ),
Run the following command: cluster enable <Name> to activate cluster,
Cluster member 1 mac-address <mac of the first stack switch>,
Cluster member 2 mac-address <mac of the Second stack switch>,
And so on, there are several switches that write such commands.
2. Use the following command on each stack switch:
After configuring cluster command-address <master switch mac>, you can use an IP address for management.
 
 
After a 3750 stack is started, the port number becomes Fa2/0/X, which is immediately removed from the stack. After nvram is cleared, the port number is still 2/0/X.
How can I restore the default configuration? How about changing it to Fa 1/0/X?
This is really troublesome. Please refer to the official documentation to exit the stack group. Change stack member number 2 to 1