DNS configuration recomendatiton

[Spale]

This is the situation.I have 8 site with 16 domain controllers.On every DC i
run DNS server.On my PDC emulator i configure forwardes to external DNS
server.My question is.How must i configure Forwarders on other DNS
servers?Because right now all dns servers are configured with forwarders to
external DNS servers?Any suggestions?

 

[Kevin D. Goodknecht [MVP]]

In

This is the situation.I have 8 site with 16 domain controllers.On
every DC i run DNS server.On my PDC emulator i configure forwardes to
external DNS server.My question is.How must i configure Forwarders on
other DNS servers?Because right now all dns servers are configured
with forwarders to external DNS servers?Any suggestions?

If all DCs are in the same domain (no child domains) Forward to external DNS
servers.
Are all DCs in the same domain?

 

[Spale]

All DC's are in the same domain.I have a 8 sites with 2 domain controller in
each site thats 16 domain controllers.I just need a info how to set DNS in
this situation?

 

[Kevin D. Goodknecht [MVP]]

In

All DC's are in the same domain.I have a 8 sites with 2 domain
controller in each site thats 16 domain controllers.I just need a
info how to set DNS in this situation?

As for the forwarders each DC should forward to the ISP's DNS for the
geographic location. In other words, if the sites are scattered all over the
country set a forwarder to the geographically closest ISP's DNS.
As for the NIC configuration all DCs should point to one central DC
preferably the first DC set up in the forest, as its preferred DNS, it
alternate DNS should be to the other DC that is on that site. This prevents
any one DNS from becoming an island and keeps replication working between
the sites.
275278 - DNS Server Becomes an Island When a Domain Controller Points to
Itself for the _Msdcs.ForestDnsName Domain:
http://support.microsoft.com/default.aspx?scid=kb;en-us;275278&Product=win2000

 

[Spale]

Ok i'll try it.Thanks.

 

[Spale]

Just one question.How this will affect on WAN links?Does this will raise
network traffic?

 

[Kevin D. Goodknecht [MVP]]

In

Just one question.How this will affect on WAN links?Does this will
raise network traffic?

Only very slightly, DNS resolution is only a tiny bit of traffic. Well worth
the piece of mind that it will keep replication working, in fact only a tiny
bit compared to replication itself. Most of the time it site partner will
handle most of the DNS resolution each DC needs.

 

[Spale]

So for instance when a server needs some dns query he will as the server on
main site or... i'm don't understand this.If server needs some DNS query
which server he will ask.Main server server in same site or him self?

 

[Kevin D. Goodknecht [MVP]]

In

So for instance when a server needs some dns query he will as the
server on main site or... i'm don't understand this.If server needs
some DNS query which server he will ask.Main server server in same
site or him self?

Remember, this is only on the DCs, clients should use the two DNS servers on
site. Other than that the DCs, unless some one is using them for a
workstation, will see little activity. (Once an hour for Netlogon
registration and at startup)

 

[Spale]

OK thanks.