Figure 7-1 – Cisco ASA 5505 User Manual
Page 281
7-3
Cisco ASA 5500 Series Configuration Guide using the CLI
Chapter 7 Starting Interface Configuration (ASA 5505)
Information About ASA 5505 Interfaces
With the Base license in routed mode, the third VLAN can only be configured to initiate traffic to one
other VLAN. See
for an example network where the Home VLAN can communicate with the
Internet, but cannot initiate contact with Business.
Figure 7-1
ASA 5505 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
for an example network.
Figure 7-2
ASA 5505 with Security Plus License
ASA 5505
with Base License
Business
Internet
Home
153364
ASA 5505
with Security Plus
License
Failover
ASA 5505
Inside
Backup ISP
Primary ISP
DMZ
Failover Link
153365