Cisco ASA 5505 - Manual (Page 1316)

62-10
Cisco ASA 5500 Series Configuration Guide using the CLI
Chapter 62 Configuring Active/Standby Failover
Configuring Active/Standby Failover
Step 5 failover link if_name interface_id
Example:
hostname(config)# failover link statelink
GigabitEthernet0/2
(Optional) Specifies the interface to be used as the Stateful
Failover link. This interface should not be used for any other
purpose (except, optionally, the failover link).
Note If the Stateful Failover link uses the failover link or a data
interface, then you only need to supply the if_name
argument.
The if_name argument assigns a logical name to the interface
specified by the interface_id argument. The interface_id
argument can be the physical port name, such as Ethernet1, or a
previously created subinterface, such as Ethernet0/2.3. This
interface can be a physical interface or a redundant interface.
Note Although you can use an EtherChannel as a failover or
state link, to prevent out-of-order packets, only one
interface in the EtherChannel is used. If that interface
fails, then the next interface in the EtherChannel is used.
You cannot alter the EtherChannel configuration while it
is in use as a failover link. To alter the configuration, you
need to either shut down the EtherChannel while you
make changes, or temporarily disable failover; either
action prevents failover from occurring for the duration.
Step 6 failover interface ip if_name [ip_address
mask standby ip_address |
ipv6_address/prefix standbyipv6_address]
Example:
hostname(config)# failover interface ip
folink 172.27.48.1 255.255.255.0 standby
172.27.48.2
hostname(config)# failover interface ip
statelink 2001:a1a:b00::a0a:a70/64 standby
2001:a1a:b00::a0a:a71
(Optional) Assigns an active and standby IP address to the
Stateful Failover link. You can assign either an IPv4 or an IPv6
address to the interface. You cannot assign both types of addresses
to the Stateful Failover link.
Note If the stateful Failover link uses the failover link or data
interface, skip this step. You have already defined the
active and standby IP addresses for the interface.
The standby IP address must be in the same subnet as the active
IP address. You do not need to identify the standby address
subnet mask.
The Stateful Failover link IP address and MAC address do not
change at failover unless it uses a data interface. The active IP
address always stays with the primary unit, while the standby IP
address stays with the secondary unit.
Step 7 interface interface_id
no shutdown
Example:
hostname(config)# interface vlan100
hostname(config-if)# no shutdown
(Optional) Enables the interface.
If the Stateful Failover link uses the failover link or a data
interface, skip this step. You have already enabled the interface.
Command Purpose