The following table lists terms and definitions used in this security mode configuration discussion.
HAU Configuration Terms and Definitions
| Term | Definition |
|---|---|
| active or current image | The image that is currently running or configured to load on the system |
| HAU compatibility key | A key associated with each image on the system that must be the same for both the target and active images for a high availability upgrade to take place. |
| HAU default mode | The boot mode that is used when no boot mode is specified when setting the system boot image. |
| HAU delay | A configurable delay in seconds between the upgrade completion of one HAU group and the beginning of the next HAU group upgrade. |
| HAU force complete | A high availability upgrade feature that forces all HAU groups that have not yet upgraded to immediately and simultaneously upgrade. |
| HAU group | A configuration of one or more slots into a group that results in group members being simultaneously upgraded during a high availability upgrade, leaving slots that are members of all non-upgrading groups operational. |
| high availability boot mode | A system boot mode option that upgrades HAU groups one at a time, if all HAU preconditions are met. |
| High Availability Firmware Upgrade (HAU) | An Extreme Networks feature that allows a system to retain high availability while being upgraded to an HAU compatible release. By contrast, all system connectivity and features are temporarily lost during a standard upgrade. |
| interconnect port | 10GbE port that plays the same role as the backplane fabric in a non-VSB chassis by providing distribution between VSB system chassis. |
| standard boot mode | A system boot mode option that simultaneously upgrades all system slots, taking the system out of operation for the duration of the upgrade. |
| system boot mode | Determines firmware load or upgrade behavior when the system is powered on or reset. |
| target image | The image that the system will upgrade to on the next system reset. |
| Virtual Switch Bonding (VSB) | An Extreme Networks S-Series feature that aggregates two like chassis into a single virtual network device. |
| VSB chassis | One of two chassis configured for VSB that make up a VSB system. |
| VSB system | The aggregation of two chassis configured for VSB and connected by one or more 10GbE interconnect ports. |
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