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Cisco ASA Series CLI Configuration Guide
Chapter 1 Configuring Active/Standby Failover
Controlling Failover
Controlling Failover
This sections describes how to control and monitor failover. This section includes the following topics:
• Forcing Failover, page 1-16
• Disabling Failover, page 1-16
• Restoring a Failed Unit, page 1-17
Forcing Failover
To force the standby unit to become active, enter one of the following commands:
Disabling Failover
To disable failover, enter the following command:
Command Purpose
failover mac address phy_if active_mac
standby_mac
Example:
hostname (config): failover mac address
Ethernet0/2 00a0.c969.87c8 00a0.c918.95d8
Configures the virtual MAC address for an interface.
The phy_if argument is the physical name of the interface, such as
Ethernet1. The active_mac and standby_mac arguments are MAC
addresses in H.H.H format, where H is a 16-bit hexadecimal digit. For
example, the MAC address 00-0C-F1-42-4C-DE would be entered as
000C.F142.4CDE.
The active_mac address is associated with the active IP address for the
interface, and the standby_mac is associated with the standby IP address
for the interface.
You can also set the MAC address using other commands or methods, but
we recommend using only one method. If you set the MAC address using
multiple methods, the MAC address used depends on many variables, and
might not be predictable.
Use the show interface command to display the MAC address used by an
interface.
Command Purpose
failover active
Example:
hostname# failover active
Forces a failover when entered on the standby unit in a failover pair. The
standby unit becomes the active unit.
no failover active
Example:
hostname# no failover active
Forces a failover when entered on the active unit in a failover pair. The
active unit becomes the standby unit.
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