Actually there are no significant differences between "standard" mode and "enhanced" mode.
- Legacy stacking protocol
- MPLS is not supported
- Required if some nodes do not support enhanced protocol
- Default configuration on switches which support both modes
- Supports MPLS, Prority Flow-Control and hi-speed stacking line 160G & 320G
- x450G2, x460G2, x670G2, x440G2 and x620 series support the Enhanced mode only