I want to update an MIB database that is exhaustive. oidview is limited so I couldn't finish downloading MIBs per vendor and only Cisco is making its OIDs available for public on ftp.
Is there a way to download a whole up-to-date MIB database ?
As PP said, there's no requirement that companies release their SNMP MIBs. Heck, they can even change their MIBs six times a year or keep them completely secret even from their own management as a "security precaution". If you want a MIB, you have to go find it yourself, whether it be from a public RFC, a generous FTP site like Cisco's, or by schmoozing a sales engineer to slip it to you under the desk.