active directory

DCDIAG reports that the Active Directory Replications test has failed with error 1256: "The remote system is not available."

I cannot RDP but ping it successfully

one DC cannot communicate with other DC

What resolution I should look for
pramod1Asked:
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Joseph MoodyBlogger and wearer of all hats.Commented:
Can you ping by name and IP?

If just IP, make sure nothing else took that IP.

Do you have a firewall blocking traffic between the devices?
pramod1Author Commented:
I Can ping by name but cannot RDP
Joseph MoodyBlogger and wearer of all hats.Commented:
Check the firewall then. Make sure it isn't blocking rdp and replication traffic.
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pramod1Author Commented:
can I do replicate from ntds setting from one sserver which I can connect
rjwesleyCommented:
Event logs... there will likely be other errors.
Check the clocks on both, are they synced. Can you manually replicate (within the links below)

https://technet.microsoft.com/en-us/library/replication-error-1256-the-remote-system-is-not-available(WS.10).aspx

https://technet.microsoft.com/en-us/library/cc949120(v=ws.10).aspx

Do you know how long the replication has been failing (tombstone?)

Rob

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pramod1Author Commented:
where should I check that
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