i have completed my CCNA(ICND1 and ICND2) and
wants to go to CCSP path. which exam i should give next.
The prerequisites for CCSP are:
CCNA Security OR CCNA + SND (up to Nov. 2011) OR any CCIE Certification can act as a pre-requisite.
I'm assuming you are not going down the CCIE track and you can't take SND anymore I believe so that means you need to complete the CCNA Security exam before taking CCSP. After that I would take SNRS.
Please rate if helpful.