Command Line Reference Guide

20
High Availability (HA)
In FTOS, High Availability (HA) is a collection of features that synchronize switch configuration to minimize recovery time
in the event of a stack-unit failure. High Availability features are supported only on stacked S5000 switches; they are not
supported on a standalone S5000 switch.
In general, a protocol is defined as “hitless” in the context of stack-unit failure. A protocol is defined as hitless if a stack-
unit failover has no impact on the protocol.
You must specifically enable some protocols for HA. Some protocols are only hitless if related protocols are also
enabled as hitless (for example, the redundancy protocol command).
redundancy disable-auto-reboot
Prevent the system from auto-rebooting the failed stack-unit member(s).
S5000
Syntax
redundancy disable-auto-reboot [stack-unit unit-number |
members]
To return to the default, use the no redundancy disable-auto-reboot stack-
unit
command.
Parameters
stack-unit
unit-
number
Enter the keyword stack-unit followed by number to disable
auto-reboot of the failed stack-unit. The range is 0 to 11.
members Enter the keyword members to disable auto-reboot of all members of
the stack-unit.
Default Disabled (that is, the failed module is automatically rebooted).
Command Modes CONFIGURATION
Command History
Version 9.0(1.3) Introduced on the S5000.
Usage
Information
Enabling this command keeps the failed stack-unit in the failed state. If there are two or more
stack-unit members in the system, enabling this command prevents the failed stack-unit from
becoming a standby unit. If there is only one stack-unit in the system, the failed unit does not
recover and affects the system.
467