I have a Cisco 2800 router currently in production that is doing the routing of all VLANs and is also the gateway of our network. We are preparing for a network upgrade and the company has purchased ASA 5510.
Since the 2800 serves as our T1 Internet Gateway and our bandwidth upgrade will have a RJ-45 drop and that ASA is new to me, I'm trying to co-deploy it until the day we will switch over from T1 to RJ-45. I am re-configuring all VLANs to be routed by the ASA (I'm currently only testing non-production VLANs) but don't know how to send Internet traffic to the 2800 for Internet access.
The goal in the end is to have everything configured on the ASA prior to the switch and just have to change routing the Internet traffic from the 2800 to the new ISP.
Is this possible to do? Has anyone done this? Can anyone recommend any other way to do this?