In native stacking mode, switches are connected using either designated Ethernet data ports or dedicated stacking connectors.
In alternate stacking mode, switches are connected using Ethernet data ports that have been configured for stacking. These ports are located either on the switch itself or on option cards installed on either the front or the rear of the switch. Not all switches support alternate stacking mode.
The Extreme 7720 supports native stacking in Native-V400 stacking mode. The switch also supports Native-V400 Alternative Configuration stacking mode. The Extreme 7720 does not support alternate stacking. See Combine Switches from Different Series for more information about cross-stacking Extreme 7720 switches with other switches.
When planning and building your stack, be sure to follow port compatibility and cabling recommendations as described in this chapter.
