Jr. Level engineer here.
In this scenerio, I want to setup a new firewall to be parallel with an existing firewall. I will use the new firewall to configure a vpn to another remote site. Currently the setup is like this:
T1 connection -> 3700 router (belongs to ISP) -> PIX -> 3560 switch
I'm going to stick a Cisco 3500 switch behind the ISPs 3700 router. That way I can plug the PIX and Juniper into the 3500 switch and make them parallel with each other.
With the 3500 switch, all I plan to do is a "wr erase" + " reload" and that's it. Maybe I'll set a password. Do you see any problem with this? Should I create a VLAN? If I create a VLAN do I have to use the subnet mask provided by their ISP? They only have a /29 so I would hate to burn a static IP on a VLAN interface.