Unable to access child domain DFS from parent domain

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we have parent/child domain setup utilizing dfs domain namespaces in both parent , child domains.  have 2003/2008 dc , dfs servers.  parent domain, i'm unable access or manage child domain dfs.  receive "the namespace cannot queried.  rpc server unavailable." when add child domain to dfs management.  dfs working fine within each domain.  working child domain client access parent domain's dfs, not vice versa.  reason why not working?

hello danny,

is there firewall between parent , child domain? if so, received "the rpc server unavailable" erro message, please kindly check verify below dfs ports not blocked on any firewall between 2 domains. 

distributed file system

the distributed file system (dfs) integrates disparate file shares located across local area network (lan) or wide area network (wan) single logical namespace. dfs service required active directory domain controllers advertise sysvol shared folder.

system service name: dfs

 
application protocol protocol ports
netbios datagram service udp 138
netbios session service tcp 139
ldap server tcp 389
ldap server udp 389
smb tcp 445
rpc tcp 135
randomly allocated high tcp ports¹ tcp

<var>random port number between 1024 - 65535</var>
<var>random port number between 49152 - 65535²</var>

<var></var> 
thanks , regards
scorpio_milo
mvp (file system storage)
hp enterprise services: solution architect
microsoft storage team - file cabinet blog
view mcp certifications
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contact me


Windows Server  >  File Services and Storage



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