Why use three Network Time Protocol (NTP) servers?
A. Typically, just one server is sufficient. However, the Cisco MeetingPlace server can synchronize with up to three servers simultaneously. Of the three, it chooses the one it thinks is best to supply the time information. By offering three servers, you allow the Cisco MeetingPlace server to reject a server that is not sane (in other words, one that does not agree with the others). More typically, the Cisco MeetingPlace server chooses the server that is at the lowest stratum (logically nearest the primary server) and is reliably accessible.
