Šuštar, CCIE No. 2387, gained his CCIE certification in 1997 and has since been recertifying as a routing and switching CCIE, although he also has experience in the security and service provider areas. As an advisor, he took part in planning networks in Slovenia and abroad. He is also a developer and instructor for specialized Cisco Systems courses.
- Certified Cisco System Instructor #99648
- Certified Information System Auditor
- Cisco Certified Internetwork Expert – R & S #2387
- Microsoft Certified Professional #413392
- VMware Certified Professional #4914