The browser service maintains a list of the domain name or workgroup name the computer is in, and the protocol being used for each computer on the network segment being served by the computer running the browser service. On each network segment, a master browser is elected from the group of computers located on the segment that are running the browser service.
The master browser is responsible for collecting host or server announcements, which are sent as datagrams every 12 minutes by each server on the network segment of the master browser. The master browser instructs the potential browsers for each network segment to become backup browsers. The backup browser on a given network segment provides a browse list to the client computers located in the same segment.
NOTE: In a Windows NT domain structure, the primary domain controller (PDC) is always selected as the domain master browser. Only the PDC can be a domain master browser. If a PDC is not present, a domain master browser is not available and you are unable to obtain browse lists from workgroups other than the workgroup you are located in.
On a given network segment, there is only one master browser. All domain controllers other than the PDC are designated as backup browsers. Additionally, one backup browser is allocated for every 32 computers on the network segment.
In a workgroup configuration containing Windows NT Workstation-based computers, there is always one master browser. If there are at least two Windows NT Workstation-based computers in the workgroup, there is also one backup browser. For every 32 Windows NT Workstation-based computers in the workgroup, there is another backup browser.
If there is not a domain controller present on a given network segment, then an election process is started that chooses a master browser and backup browser from the computers on the segment using the following order of priority:
Windows 2000 Server
Windows 2000 Professional
Microsoft Windows NT 4.0 Server Enterprise Edition
Microsoft Windows NT 4.0 Server
Microsoft Windows NT 4.0 Workstation
Microsoft Windows 98
Microsoft Windows 95
Microsoft Windows for Workgroups 3.11
The master browser is responsible for collecting host or server announcements, which are sent as datagrams every 12 minutes by each server on the network segment of the master browser. The master browser instructs the potential browsers for each network segment to become backup browsers. The backup browser on a given network segment provides a browse list to the client computers located in the same segment.
NOTE: In a Windows NT domain structure, the primary domain controller (PDC) is always selected as the domain master browser. Only the PDC can be a domain master browser. If a PDC is not present, a domain master browser is not available and you are unable to obtain browse lists from workgroups other than the workgroup you are located in.
On a given network segment, there is only one master browser. All domain controllers other than the PDC are designated as backup browsers. Additionally, one backup browser is allocated for every 32 computers on the network segment.
In a workgroup configuration containing Windows NT Workstation-based computers, there is always one master browser. If there are at least two Windows NT Workstation-based computers in the workgroup, there is also one backup browser. For every 32 Windows NT Workstation-based computers in the workgroup, there is another backup browser.
If there is not a domain controller present on a given network segment, then an election process is started that chooses a master browser and backup browser from the computers on the segment using the following order of priority:
Windows 2000 Server
Windows 2000 Professional
Microsoft Windows NT 4.0 Server Enterprise Edition
Microsoft Windows NT 4.0 Server
Microsoft Windows NT 4.0 Workstation
Microsoft Windows 98
Microsoft Windows 95
Microsoft Windows for Workgroups 3.11
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