DC down in a site, how do users log on to domain?

[Ed]

If a domain has many sites, and has a DC at the root. Each
site has a DC, if that dc is unavailable can the users log
on using the DC at the root of the domain, or hoe is the
secondary dc set?

 

[Doug Sherman [MVP]]

As long as workstations in the Site point to a functioning domain DNS server
and routing is still functional, user logons will be directed to a DC
outside the Site when Site DCs are not available. See:

http://support.microsoft.com/default.aspx?scid=kb;en-us;314861

Doug Sherman
MCSE Win2k/NT4.0, MCSA, MCP+I, MVP