Configuring HAU

This section provides default HAU values and a procedure for configuring an HAU system.

The following table lists HAU default values.

Default HAU Parameters

Parameter	Description	Default Value
system boot mode	Determines firmware load or upgrade behavior when the system is powered on or reset.	standard
HAU delay	A configurable delay in seconds between the upgrade completion of one HAU group and the beginning of the next HAU group upgrade.	0 seconds
HAU default mode	The boot mode that is used when no boot mode is specified when setting the system boot image.	never

The following procedure describes HAU configuration on the Extreme Networks S- and 7100-Series devices. All commands used to configure HAU can be entered in any command mode.

Configuring HAU

Step	Task	Command(s)
1	Optionally, modify the default HAU mode. By default a standard (non-high availability) upgrade is performed, unless high availability is set when specifying the boot image.	set boot high-availability default-mode {never | if-possible | always}
2	Optionally, modify the default HAU group configuration by placing multiple slots into some or all HAU groups.	set boot high-availability group group-id slot(s)
3	Optionally, set a delay between the end of an HAU group upgrade and the beginning of the next HAU group upgrade.	set boot high-availability delay delay
4	Specify the system image that will boot the next time the system resets, and optionally specify whether the image will load using the standard or high availability method.	set boot system filename [standard | high-availability]

Refer to the S-, K-, and 7100 Series CLI Reference Guide for more information about each command.

The following is an example of the HAU aspect of a high availability upgrade configuration, based upon the system setup presented in System High Availability Firmware Upgrade Overview for the S-Series slotted chassis or VSB System High Availability Firmware Upgrade for the SSA and 7100-Series. This configuration example:

• Assumes that VSB and LAGs have been correctly configured
• Leaves the high availability default mode unchanged because the high availability method was specified in the set boot system command
• (7100-Series) Leaves the default HAU group configuration of each chassis configured in its own HAU group unchanged
• (S-Series) Configures HAU groups:
  • HA group 1, slots 1 and 4
  • HA group 2, slots 2 and 5
  • HA group 3, slots 3 and 6
• Sets the delay between the upgrade completion of one HAU group and the beginning of another to 15 seconds
• Sets the boot system mode to high-availability for the appropriate image

  S-Series Input

  S-Series(rw)->set boot high-availability group 1 1,4
  S-Series(rw)->set boot high-availability group 2 2,5
  S-Series(rw)->set boot high-availability group 3 3,6
  S-Series(rw)->set boot high-availability delay 15
  S-Series(rw)->set boot system S-83101-0003 high-availability

  7100-Series Input

  7100-Series(rw)->set boot high-availability delay 15
  7100-Series(rw)->set boot system 7100-83101-0003 high-availability