Users need to browse multiple workgroups and domains to retrieve a list of servers within their workgroup or domain and a list of other workgroups and domains.
Figure 3.7 Browser service across multiple workgroups and domains
Upon becoming a master browser, each master browser in each workgroup and domain will broadcast a DomainAnnouncement datagram every minute for the first five minutes. After the first five minutes, the master browser will broadcast a DomainAnnouncement datagram once every 15 minutes. If a workgroup or domain has not announced itself for three announcement periods, the workgroup or domain will be removed from the list of workgroups and domains. Therefore, it is possible that a workgroup or domain will appear in the browse list 45 minutes after the workgroup or domain has failed or been shut down.
A DomainAnnouncement datagram contains the following information.
If the browser computer is running Windows NT Server, the DomainAnnouncement datagram will also specify whether or not the browser computer is the domain PDC.