Cisco Systems Configuring and Enabling Switch Ports as Access Ports

13-8
Cisco ASA 5500 Series Configuration Guide using ASDM
Chapter13 Starting Interface Configuration (ASA 5505)
Starting ASA 5505 Interface Configuration
For example, you have one VLAN assigned to the outside for Internet access, one VLAN assigned to an
inside business network, and a third VLAN assigned to your home network. The home network does not
need to access the business network, so you can use this option on the home VLAN; the business network
can access the home network, but the home network cannot access the business network.
If you already have two VLAN interfaces configured with a name, be sure to configure this setting before
setting the name on the third interface; the ASA does not allow three fully functioning VLAN interfaces
with the Base license on the ASA 5505.
Note If you upgrade to the Security Plus license, you can remove this option and achieve full
functionality for this interface. If you leave this option enabled, this interface continues to be
limited even after upgrading.
To configure the MAC address and MTU, see the “Configuring the MAC Address and MTU”
section on page 14-12.
Step7 Click OK.
What to Do Next
Configure the switch ports. See the “Configuring and Enabling Switch Ports as Access Ports” section on
page 13-8 and the “Configuring and Enabling Switch Ports as Trunk Ports” section on page13-10.
Configuring and Enabling Switch Ports as Access Ports
By default (with no configuration), all switch ports are shut down, and assigned to VLAN 1. To assign
a switch port to a single VLAN, configure it as an access port. To create a trunk port to carry multiple
VLANs, see the “Configuring and Enabling Switch Ports as Trunk Ports” section on page13-10. If you
have a factory default configuration, see the “ASA 5505 Default Configuration” section on page2-13 to
check if you want to change the default interface settings according to this procedure.
For more information about ASA 5505 interfaces, see the “Information About ASA 5505 Interfaces”
section on page 13-1.
Caution The ASA 5505 does not support Spanning Tree Protocol for loop detection in the network. Therefore
you must ensure that any connection with the ASA does not end up in a network loop.
Detailed Steps
Step1 Choose the Configuration > Device Setup > Interfaces pane.
Step2 Click the Switch Ports tab.
Step3 Click the switch port you want to edit.
The Edit Switch Port dialog box appears.