According to Cisco, its mandatory to do CCNA R&S if you want to opt for Cisco Security Certifications track.

According to Cisco, your training path should be CCNA R&S ==> CCNA Security ==> CCNP Security ==> CCIE Security.

But according to current global job market, you should have in-depth knowledge of Cisco Routing & Switching technologies, if you even want to be CCIE Security Certified. You don't need to appear for any Cisco CCNA or CCNP exams to go for CCIE Security, but in-depth understanding of concepts in must.

Looking at current industry trends, we highly recommend CCNA R&S and CCNP R&S both for candidates looking for CCIE Security Certification and Trainings.

If you opt for a program that covers CCNA R&S + CCNP R&S + CCNA Security + CCNP Security + CCIE Security, you get in-depth understanding of How to Design, implement, Troubleshoot and Secure Networks using Cisco Routers, Switches, Firewalls, IPS Systems, Iron Port, ISE Servers and more. This is how you become a combo of Cisco Routing & Switching and Network Security skills. Company see you as mixture of a Network Engineer and Network Security Engineer.

This is how you grow much faster. Happy Learning!!