Syed,

To answer your questions, here is the link that explains about the features on the SOHO routers

http://www.cisco.com/en/US/products/hw/routers/ps4866/products_data_sheet09186a008010e5c4.html

But, I do know that IPSec HA is supported only on some of the platforms. Here is the snippet from Cisco's web site

"IPsec HA is supported only on limited hardware. The hardware list includes Cisco 7200 VXR (NPE-400, NPE-G1) Series router, Cisco 7301 Router, and Cisco 3725 and 3745 multiservice access routers."

http://www.cisco.com/en/US/products/ps6660/products_white_paper0900aecd80278edf.shtml

Hope this explains your queries.

Rate this post, if it helps!!

Cheers

Gilbert