Filter
Top Products
15-16
Cisco ASDM User Guide
OL-16647-01
Chapter 15 High Availability
Field Information for the Failover Panes
–
Interface—Specifies the interface used for failover communication. Failover requires a
dedicated interface, however you can share the interface with Stateful Failover.
Only unconfigured interfaces or subinterfaces are displayed in this list and can be selected as
the LAN Failover interface. Once you specify an interface as the LAN Failover interface, you
cannot edit that interface in the Configuration > Interfaces pane.
–
Active IP—Specifies the IP address for the failover interface on the active unit.
–
Subnet Mask—Specifies the mask for the failover interface on the primary and secondary unit.
–
Logical Name—Specifies the logical name of the interface used for failover communication.
–
Standby IP—Specifies the IP address used by the secondary unit to communicate with the
primary unit
–
Preferred Role—Specifies whether the preferred role for this security appliance is as the
primary or secondary unit in a LAN failover.
• State Failover—Contains the fields for configuring Stateful Failover.
Note Stateful Failover is not available on the ASA 5505 platform. This area does not appear on ASDM
running on an ASA 5505 security appliance.
–
Interface—Specifies the interface used for state communication. You can choose an
unconfigured interface or subinterface, the LAN Failover interface, or the Use Named option.
Note We recommend that you use two separate, dedicated interfaces for the LAN Failover
interface and the Stateful Failover interface.
If you choose an unconfigured interface or subinterface, you must supply the Active IP, Subnet
Mask, Standby IP, and Logical Name for the interface.
If you choose the LAN Failover interface, you do not need to specify the Active IP, Subnet
Mask, Logical Name, and Standby IP values; the values specified for the LAN Failover interface
are used.
If you choose the Use Named option, the Logical Name field becomes a drop-down list of
named interfaces. Choose the interface from this list. The Active IP, Subnet Mask, and Standby
IP values do not need to be specified. The values specified for the interface are used. Be sure to
specify a standby IP address for the selected interface on the Interfaces tab.
Note Because Stateful Failover can generate a large amount of traffic, performance for both
Stateful Failover and regular traffic can suffer when you use a named interface.
–
Active IP—Specifies the IP address for the Stateful Failover interface on the primary unit. This
field is dimmed if the LAN Failover interface or Use Named option is selected in the Interface
drop-down list.
–
Subnet Mask—Specifies the mask for the Stateful Failover interfaces on the primary and
secondary units. This field is dimmed if the LAN Failover interface or Use Named option is
selected in the Interface drop-down list.