This clocked data comes to you as traffic reports and warnings of specific problems. Much like your desktop applications, if the managed hub or switch software has the wrong date it will either fail to report or provide information that's useless. Some managed devices are flash-upgradable, and the vendor should provide that information on its Web site or in the documentation. You load the file into the networked device either through a serial management port or across the LAN using a utility like Telnet. Your routers are highly susceptible to Y2K problems.
Routers have an internal clock that keeps track of the time and date.
This clock typically allows you to configure the router to make connections at different times of the day so you can save money when the rates are less. If the router doesn't use a four-digit date, it could possibly fail when Y2K arrives and drop all of your WAN connections. Cisco, the leader in routers, has set up an entire Y2K certification test to ensure that its products and any others will handle the new date. For now, the best advice I can give you is to set aside a weekend and change the date on all of your hardware and software to see what happens.