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Cisco ASDM User Guide
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Chapter 15 High Availability
Field Information for the Failover Panes
• Subnet Mask—Identifies the mask for this interface. This field does not appear if an IP address has
not been assigned to the interface.
• Standby IP Address—Specifies the IP address of the corresponding interface on the standby failover
unit. This field does not appear if an IP address has not been assigned to the interface.
• Monitor interface for failure—Specifies whether this interface is monitored for failure. The number
of interfaces that can be monitored for the security appliance is 250. Hello messages are exchanged
between the security appliance failover pair during every interface poll time period. Monitored
failover interfaces can have the following status:
–
Unknown—Initial status. This status can also mean the status cannot be determined.
–
Normal—The interface is receiving traffic.
–
Testing—Hello messages are not heard on the interface for five poll times.
–
Link Down—The interface is administratively down.
–
No Link—The physical link for the interface is down.
–
Failed—No traffic is received on the interface, yet traffic is heard on the peer interface.
Modes
The following table shows the modes in which this feature is available:
For More Information
For more information about failover in general, see Understanding Failover.
Failover - Transparent
Use this pane to define the standby IP address for the management interface for the security context and
to specify whether the status of the interfaces on the security context should be monitored.
Fields
• Interface—Lists the interfaces for the security context and identifies their monitoring status.
–
Interface Name—Identifies the interface name.
–
Is Monitored—Specifies whether this interface is monitored for failure.
• Edit—Displays the Edit Failover Interface Configuration dialog box for the selected interface.
• Management IP Address—Identifies the active and standby management IP addresses for the
security context.
–
Active—Identifies the management IP address for the active failover unit.
–
Standby—Specifies the management IP address for the standby failover unit.
• Management Netmask—Identifies the mask associated with the management address.
Firewall Mode Security Context
Routed Transparent Single
Multiple
Context System
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