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Cisco ASA 5500 Series Configuration Guide using ASDM
OL-20339-01
Chapter 8 Configuring Interfaces
Information About Interfaces
Note An active VLAN is a VLAN with a nameif command configured.
With the Base license, the third VLAN can only be configured to initiate traffic to one other VLAN. See
Figure 8-1 for an example network where the Home VLAN can communicate with the Internet, but
cannot initiate contact with Business.
Figure 8-1 ASA 5505 Adaptive Security Appliance with Base License
With the Security Plus license, you can configure 20 VLAN interfaces, including a VLAN interface for
failover and a VLAN interface as a backup link to your ISP. You can configure the backup interface to
not pass through traffic unless the route through the primary interface fails. You can configure trunk
ports to accommodate multiple VLANs per port.
Note The ASA 5505 adaptive security appliance supports Active/Standby failover, but not Stateful Failover.
ASA 5505
with Base License
Business
Internet
Home
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