Cisco ASA Series Cli Configuration Manual page 445

Chapter 1 Starting Interface Configuration (ASA 5505)
With the Base license in routed mode, the third VLAN can only be configured to initiate traffic to one
other VLAN. See
Internet, but cannot initiate contact with Business.
Figure 1-1
with Base License
With the Security Plus license, you can configure 20 VLAN interfaces in routed mode, 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 supports Active/Standby failover, but not Stateful Failover.
See Figure 1-2
Figure 1-2
with Security Plus
Figure 1-1 for an example network where the Home VLAN can communicate with the
ASA 5505 with Base License
Internet
ASA 5505
Business
for an example network.
ASA 5505 with Security Plus License
Backup ISP
Primary ISP
ASA 5505
License
Home
Failover
DMZ
ASA 5505
Failover Link
Inside
Cisco ASA Series CLI Configuration Guide
Information About ASA 5505 Interfaces
1-3