ASA5505 dual-ISP (redundancy) question

[Staticfactory]

I have an ASA5505 to which I would like to add a redundant (backup) ISP link. It is currently a simple inside/outside configuration (no DMZ required).

From what I have been able to find so far, it appears that I will need to upgrade from the base license to the security-plus license in order to use more than 2 active VLANs at a time. If anyone can confirm this claim, or direct me to an alternative solution using a base license, it would be greatly appreciated.

The other issue is that both ISPs assign a dynamic address (one cable, one DSL), and the dual-ISP configurations I have been able to find have all included static (default) routes to the ISP's gateway address. Would the 'ip address DHCP setroute" command in both VLAN configurations achieve the same result in this case?

Thanks in advance!

 

[Supergrrover]

I only use the sec+ license on them but here is the guide. make sure you use the backup interface command. As long as you don't have a dmz the other vlan should be able to be used.

http://www.cisco.com/en/US/products...s_configuration_example09186a00806e880b.shtml

http://www.cisco.com/en/US/docs/security/asa/asa72/command/reference/b_72.html#wp1338585

Brent
Systems Engineer / Consultant
CCNP, CCSP