Would it be a good option to do MBA or shall I do some certifications like CCNA, CCNP or MCSE at the age of 30?

Whether pursuing an MBA or certification courses like CCNA CCNP or MCSE is a better option for you at the age of 30 depends on your career goals and personal aspirations. An MBA (Master of Business Administration) is a degree programme that focuses on developing leadership, management, and business

The MCSE certification is the highest level Microsoft certification while one can opt for more advanced level certifications in Cisco environment after CCNA like; CCNP (Cisco Certified Network Professional) and CCIE (Cisco Certified Internet Professional.

This decision would depend a lot on your interest areas and long term career aspirations. MBA is a generic management course where as CCNA, CCNP and MCSE are very specific technical courses and each of them will give you a different career path.