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How to configure two Summit X670 switches for V320 stacking

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TitleHow to configure two Summit X670 switches for V320 stacking
Objective
How to configure two Summit X670 switches for V320 stacking
Environment
  • Summit X670
  • VIM4
  • EXOS
Procedure

V320 stacking combines a pair of QSFP+ ports into a single logical link and requires the use of all four ports on the VIM4 module.

  1. Begin by connecting Port 1 on SW1 to Port 2 on SW2, and Port 3 on SW1 to Port 4 on SW2. These two links become S1.
  2. Now, connect  Port 1 on SW2 to Port 2 on SW1, and Port 3 on SW2 to Port 4 on SW 1. These links become S2.
Cable diagram
 
  1. Now, the stack ports must be configured for the correct stacking mode. To do so, type the commands below on each switch:
  • "enable stacking-support"
  • "reboot"
  • "y" to save and reboot
  • "configure stacking-support stack-ports all selection native v320"
  • "reboot"
NOTE: The above commands need to be configured individually on each X670V before stack can be created.
  1. After rebooting, the stack can be configured as normal.​

Additional notes
A note about redundancy:

The stack will continue to function if any one port is disconnected. The stack will also continue to function if two ports are disconnected, as long as those ports are Ports 1+3 or Ports 2+4. But, if Ports 1+2 or 3+4 go down then the stack will fail.

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