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DNS Issues

Hi I have windows 2003 domain.Primary DNS is located in site A and secondary DNS servers are distributed to sites B,C and D. Each site uses it's own DNS for name resolutions.Each Site have its own DHCP.If my Wan connection to site A is down,then the other sites culdnot able to access the network resources
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Dear sven_jambor

It will take more time to login

If i open my computer,the sytem will hang(I have mapped network drive which is mapped by login script).If i remove the network cable,it became fast.If i click on share drive it will give me access denied messages

If i restart the local Dc, evrything will fine even before my wan connection back
DNS server order is correct
Okay, that makes sense. Just to be sure: are the local DCs Global Catalog servers?
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yes ,they are Global Catalog servers
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I've requested that this question be closed as follows:

Accepted answer: 0 points for ThaMbU's comment http:/Q_26643856.html#34340659

for the following reason:

it started working after all these changes
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gg
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I've requested that this question be closed as follows:

Accepted answer: 0 points for ThaMbU's comment http:/Q_26643856.html#36284171
Assisted answer: 167 points for sven_jambor's comment http:/Q_26643856.html#34228378
Assisted answer: 166 points for wdurrett's comment http:/Q_26643856.html#34232572
Assisted answer: 167 points for sven_jambor's comment http:/Q_26643856.html#34246506

for the following reason:

it started working after all these changes
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working
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it started working
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   it started working after all these changes