The vendor is focused on getting and keeping the technology working. In fact, documentation may allow you to be more independent of the vendor. Remember that not all vendors encourage customer self-sufficiency with technology. Network documentation has a very short shelf-life. Most network environments are changing frequently.
Network documentation is too time-consuming.
Network documentation like all other documentation, takes time. The value of the time invested is not justified by the time and cost it saves in the instances that it is relied on. Finally, you need to maintain some autonomy from your vendors or at least know who to call. Recognizing the frustration and time-consuming nature of the most frequently changing aspects of documentation, there is a growing suite of responses from the computer industry. Computers are becoming more intelligent, allowing them not only to know all their parts, but also to have a way to send that information to a central depository.