Cisco operates a formidable training as well as certification operation, both online and in person. The online portion is called The Cisco Learning Network or, more unofficially, Cisco Learning. Here, you could be navigated to the individual credentials as you see fit, but you could also tap into a huge volume of supporting and surrounding information.
Whether you would be looking for resources to help you to obtain that first Cisco certification or you are a seasoned professional which would be seeking to advance in order to the next Cisco certification level, MeasureUp is definitely considered is worth exploring.
Cisco Press offers an amazing collection of certification preparation materials. CCNA self-study resources would be illustrating, you could find all kinds of materials for the enormous majority of Cisco certifications at the company's official press site. Cisco Press not only would be offering a full-length study guide, but also the software simulators, flash cards, video training, and even practice tests.
The Celtic Rover CCNA pages would be offered to some great resources for IT professionals preparing for Cisco's CCNA exam. You would be finding lots of great information in order to dig into for the various CCNA exams. This material would make a great supplement to the candidates who are preparing through Cisco Press CCNA exam cert prep books.
As with Celtic Rover for CCNA, there's a lot of good stuff that you could learn at CCNP Guide which would help you out to bone up for the various professional level CCNP exams, especially for those who are on the Routing and Switching track.
The higher you climb up the Cisco certification pyramid, the more the importance of hands-on access to the hardware increases. That's why at least half of Cisco CCNP candidates as well as those who are pursuing CCIE, purchases their own gear upon which they are going to practice on. And in the case of the CCIE, Cisco pros would be spending a great amount of time with the hardware so as to prepare for the infamous CCIE lab exam.
There would have always been lots of sources for virtual lab access to Cisco environments online, but only in 2012 did Cisco itself would be dipping a toe into these waters by launching of the Cisco Virtual Labs.
As is so often the case for training on certifications of the vendor-specific, you would have an important choice in order to make when you would be seeking out training on Cisco certifications to go through an authorized Cisco training partner that would be taught elements of the Cisco official training curriculum, or in order to go outside the Cisco channel so as to find a solid, reputable third-party training provider.
CCIE R&S Certification would be achieved without proper training module, for which I would recommend you to join the SPOTO, as it provides you with the training along with the passing guarantee.