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Cisco ASA 5500 Series Configuration Guide using ASDM
Chapter12 Starting Interface Configuration (ASA 5510 and Higher)
Starting Interface Configuration (ASA 5510 and Higher)
What to Do Next
Optional Task:
Configure VLAN subinterfaces. See the “Configuring VLAN Subinterfaces and 802.1Q Trunking”
section on page 12-35.
Required Tasks:
For multiple context mode, assign interfaces to contexts and automatically assign unique MAC
addresses to context interfaces. See the “Configuring Multiple Contexts” section on page11-14.
For single context mode, complete the interface configuration. See the Chapter14, “Completing
Interface Configuration (RoutedMode),” or Chapter 15, “Completing Interface Configuration
(TransparentMode, 8.4 and Later).”

Changing the Active Interface

By default, the active interface is the first interface listed in the configuration, if it is available. To view
which interface is active, enter the following command in the Tools > Command Line Interface tool:
show interface redundantnumber detail | grep Member
For example:
show interface redundant1 detail | grep Member
Members GigabitEthernet0/3(Active), GigabitEthernet0/2
To change the active interface, enter the following command:
redundant-interface redundantnumber active-member physical_interface
where the redundantnumber argument is the redundant interface ID, such as redundant1.
The physical_interface is the member interface ID that you want to be active.
Configuring an EtherChannel
This section describes how to create an EtherChannel port-channel interface, assign interfaces to the
EtherChannel, and customize the EtherChannel.
This section includes the following topics:
Adding Interfaces to the EtherChannel, page12-30
Customizing the EtherChannel, page12-32