We are currently running a PIX 515E behind a 2851 router balancing two internet pipes via BGP.
It has been recommended to us that we upgrade the PIX to the ASA line.
Is there a good reason not to use the Firewall/VPN capabilities available in the 2851 and eliminate the additional box?
We have two point-to-point VPN tunnels to remote offices running PIX501's and a handful of users accessing client VPN, though that may change if we can do SSL VPN.
Any advice would be greatly appreciated!