Hi,
I just want to get some feedback from people who use ISR (2811 or 3825) to do encryption using on board chip vs. purchasing an extra AIM module to do the encryption.
From Cisco own performance test, it shows that with an additional AIM module to assist encryption, there is only minimal performance gain.
http://www.cisco.com/en/US/docs/solutions/Enterprise/WAN_and_MAN/DMVPN_4_Phase2.html#wp82283
Since we are planning to migrate the entire network to a DMVPN, I just want to make sure if there is merit to purchase this AIM module?
Any input or suggestion is welcome.
Thanks.