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Cisco ASA 5500 Series Configuration Guide using ASDM
Chapter 12 Starting Interface Configuration (ASA 5510 and Higher)
Starting Interface Configuration (ASA 5510 and Higher)
Because the physical or redundant interface must be enabled for the subinterface to pass traffic,
ensure that the physical or redundant interface does not pass traffic by not configuring a name for
the interface. If you want to let the physical or redundant interface pass untagged packets, you can
configure the name as usual. See Chapter 14, “Completing Interface Configuration (Routed Mode),”
or Chapter 15, “Completing Interface Configuration (Transparent Mode, 8.4 and Later),” for more
information about completing the interface configuration.
• (ASA 5512-X through ASA 5555-X) You cannot configure subinterfaces on the Management 0/0
interface.
Prerequisites
For multiple context mode, complete this procedure in the system execution space. If you are not already
in the System configuration mode, in the Configuration > Device List pane, double-click System under
the active device IP address.
Detailed Steps
Step 1 Depending on your context mode:
• For single mode, choose the Configuration > Device Setup > Interfaces pane.
• For multiple mode in the System execution space, choose the Configuration > Context
Management > Interfaces pane.
Step 2 Choose Add > Interface.
The Add Interface dialog box appears.