What’s new in this document

The following table provides a description of new information added to this guide for FastIron software release 08.0.95.

Feature	Description	Location
Sub-second stack failover	The traffic interruption time is improved to sub-second if the active controller fails and the traffic must be rerouted. The traffic that does not pass through the failed active controller is hitless. When a stacking ring transitions to a linear stack, however, the traffic interruption remains in the 1-3 second range for traffic that needs to be rerouted.	Refer to Hitless Stacking for more information on hitless failover.

Feature	Description	Location
ICX 7550 stacking enhancement	ICX 7550 100-Gbps stacking is added in this release.	Refer to FastIron Stacking Ports and Bandwidth and ICX 7550 Stack Configuration Overview for more information.
Zero 'stack-port' or 'stack-trunk' configuration allowed	There is no longer a requirement for designated stack-ports or stack-trunks to be present when stacking is not enabled.	Refer to Changes to Stacking in FastIron Release 08.0.95c.

Feature	Description	Location
ICX 7550 support	RUCKUS ICX 7550 Series Switches are introduced in this release.	Refer to ICX 7550 Stack Configuration Overview for more information.
Editorial changes	Editorial changes have been made to improve readability.	Throughout the guide.