Configure and Manage switch stacks.
Switch Stack OR Virtual Switching Framework(VSF), defines a virtual switch,
comprising multiple individual physical switches, inter-connected through
standard Ethernet links. These physical switches will operate with one
control plane, thereby visible to the peers as a virtual switch stack.

Within the stack, one switch is the Conductor switch, which runs all the
control plane software and manages the ASICs of all the stack members.
A second switch can be configured as the Standby switch, which will
take over as Conductor if the conductor fails.

It is strongly recommended to configure a secondary member in the stack,
since a stack with a standby offers resiliency and high-availability.