How many cables are required for setting up a stack of CE switches

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At least one cable is required to connect two member switches. To ensure reliability, you are advised to use two cables to connect different cards of two member switches.

Other related questions:
Are dedicated cables required for setting up a stack of CE series switches
Common Ethernet cables are used to set up a stack of CE series switches, and no dedicated stack cable is required. High-speed cables, active optical cables (AOCs), or optical modules and optical fibers are used for connecting optical ports. Category-6, Category-6A, or Category-7 Ethernet cables are used to connect electrical ports.

Stack cables supported by S series fixed switches
For details about stack cables supported by S series fixed switches, click Typical Configuration Examples and choose Typical Stack Configuration of Fixed Switches- Determining the Stack Connection Mode and Hardware and Software Requirements. This section describes whether each model and version of S series fixed switches supports stacking as well as stack modes, hardware and software requirements, typical networking, configuration steps, and also stack cables used to set up various stacks.

Which cables can be used to set up a stack of CE series switches
Common Ethernet cables can be used to set up a stack of CE series switches, and no dedicated stack cable is required. Optical ports are connected using high-speed cables or optical modules and optical fibers, and electrical ports are connected using Category 6, Category 6A, or Category 7 cables.

How many cables are required to connect two stacks
To ensure reliability and service bandwidth, you are advised to take the following precautions when connecting two stacks of S series fixed switches. 1. Two or more cables are required to perform link backup, ensuring system reliability. 2. You are advised to connect the stacks with an even number of cables. 3. More cables connected can provide higher link bandwidths for transmitting services between the stacks.

Number of stack cables among switches on OceanStor 9000 V100R001C01
CE6810 switches are stacked through 40GE QSFP+ high-speed cables. The number of cables varies with the number of the OceanStor 9000 nodes. CONFIGURE principles are as follows: - Configure two cables if a cluster contains 3 to 16 nodes. - Configure three cables if a cluster contains 17 to 24 nodes. - Configure four cables if a cluster contains 25 to 31 nodes. If the number of cluster nodes is greater than or equal to 32, use CE12800 switches instead of CE6810.

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