How to solve this event ID errors 5002, 1202 and event 5008?

got problem with dfs replication and found this event ids. How to you trace the source of the problem? thanks

jess
JessIT2013Asked:
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serialbandCommented:
Have you looked up the event IDs to see what the errors mean?  It looks like DNS, firewall or network issues.  You basically can't connect.

5002  from https://social.technet.microsoft.com/wiki/contents/articles/1207.dfsr-event-5002-dfs-replication.aspx
Summary

DFS Replication encountered an error while communicating with a replication partner during replication. DFS Replication will retry replication.
Causes

An unhealthy state of this monitor is caused by communication errors during replication. Communication errors can occur for the following reasons:

    General network connectivity issues
    DNS errors
    Firewall settings
    Lack of software updates on replication partners
1202 from https://social.technet.microsoft.com/wiki/contents/articles/1206.dfsr-event-1202-dfs-replication.aspx
Summary

The DFS Replication service failed to contact a domain controller to access configuration information. The service will try again during the next configuration polling cycle. This event can be caused by TCP/IP connectivity, firewall, Active Directory Domain Services, or DNS issues.
Causes

DFS Replication failed to contact a domain controller to retrieve configuration information. If replication was working previously, the service will use cached configuration stored locally but will not respond to any configuration changes until the issue is resolved.
This issue can be caused by the following factors:

    Basic network connectivity issues
    Firewall settings
    Active Directory Domain Services (AD DS) issues
5008 from http://www.eventid.net/display-eventid-5008-source-DFSR-eventno-8443-phase-1.htm
Description:
The DFS Replication service failed to communicate with partner <computer> for replication group <dfs path to folder>. This error can occur if the host is unreachable or if the DFS Replication service is not running on the server.

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