I Completed my CCNA [640-802] & now Want to start for CCSP. But I came to know that CCNA Security OR CCNA+SND* are the prerequisties for attempting the CCSP.
So , should I give either CCNA Security OR SND first & then go for CCSP ?
Yes, you do require the CCNA Certification as the "first" step :)
CCNA Security Prerequisites
Hope this helps!