You can assign either an IPv4 or an IPv6 address to the interface. You cannot assign both types of addresses to the failover link. 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 failover link IP address and MAC address do not change at failover. The active IP address for the failover link always stays with the primary unit, while the standby IP address stays with the secondary unit. Step 5 interface phy_if Example: hostname(config)# interface vlan100 hostname(config-if)# no shutdown Enables the interface. Step 6 failover link if_name phy_if Example: hostname(config)# failover link statelink GigabitEthernet0/2 (Optional) Specifies the interface to be used as the Stateful 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 phy_if argument. The phy_if argument can be the physical port name, such as Ethernet1, or a previously created subinterface, such as Ethernet0/2.3. This interface should not be used for any other purpose (except, optionally, the failover link). Command Purpose
33-10 Cisco ASA 5500 Series Configuration Guide using the CLI OL-18970-03 Chapter 33 Configuring Active/Standby Failover Configuring Active/Standby Failover Configuring the Secondary Unit The only configuration required on the secondary unit is for the failover interface. The secondary unit requires these commands to communicate initially with the primary unit. After the primary unit sends its configuration to the secondary unit, the only permanent difference between the two configurations is the failover lan unit command, which identifies each unit as primary or secondary. Prerequisites When configuring LAN-based failover, you must bootstrap the secondary device to recognize the failover link before the secondary device can obtain the running configuration from the primary device Step 7 failover interface ip if_name [ ip_address mask standby ip_address | ipv6_address / prefix standby ipv6_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.
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- Fall '19
- IP address, active unit, standby failover