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Number of Automatically Generated Site Connection ?

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  • Number of Automatically Generated Site Connection ?

    I have a root domain with 2 DC's

    I also have a child domain with 1 DC.

    All DC's are running Windows 2003 R2 STD.

    rootSever1
    rootServer2

    childServer1

    Now, i noticed manually created connection objects between the rootServers and the childServer.

    I deleted all manual connections and opened replmon and added the rootserver1 and rootServer2 as monitored servers and kicked off an "Check replication Topology"

    After a while, i noticed that the following <automatically generated> connected was created between the following servers

    rootServer2 --> childServer1

    childServer1 --> rootServer2

    I don't see an automatically generated connection from:

    rootServer1 --> childServer1

    nor

    childServer1 --> rootServer1

    Is this even necessary considering i already have one connection that's up and running ? I don't think this is the recommend setting.

    If not, how can i get that automatically generated AD connection from those 2 boxes ?

    I manually entered a connection for now..

    Hope this makes sense.

  • #2
    Re: Number of Automatically Generated Site Connection ?

    If I'm not mistaken the KCC creates a ring topology not a mesh topology so you won't see connections from every server to every other server.

    Have a look at this article for an in depth explanation of AD Replication Topology:

    http://technet.microsoft.com/en-us/l...repto_how_yipb

    Comment


    • #3
      Re: Number of Automatically Generated Site Connection ?

      You're supposed to tell KCC how you want it done by setting up Site Links. If you leave all Sites in the default Site Link you'll have random mesh depending on what KCC thinks is best.

      Comment


      • #4
        Re: Number of Automatically Generated Site Connection ?

        1. I though it created a ring not a mesh?

        2. Wouldn't you want KCC to create it automatically? It does this based on some pretty sophisticated calculations so my assumption is that what the KCC generates is probably the best. Is that not so?

        Comment


        • #5
          Re: Number of Automatically Generated Site Connection ?

          Thanks Joe.

          It looks as if intersite replication the ISTG would create a inbound connection on each bridgehead server within their respective site.


          So it doesn't appear i need connection objects to every server between sites, even if i have more than 1 BH server per site.

          If i understood that correctly, i'm wondering why i'm experiencing access denied issues when replication happens between the second BH server in the root domain and the child BH in the child domain..

          part of my thinking was directly related to the fact there wasn't a connection a agreement, however that doesn't seem relevant now since between sites, a connection agreement is already established.

          when i run

          repadmin /showreps rootDCserver -- I get:

          C:\>repadmin /showreps phdc1
          MainOffice\PHDC1
          DC Options: IS_GC
          Site Options: (none)
          DC object GUID: 8df1b069-94bd-4add-8e9c-913efd0691ec
          DC invocationID: edbd986a-5140-4405-b965-175ffc7edb33

          ==== INBOUND NEIGHBORS ======================================

          DC=phippsny,DC=org
          NetcongDR\PHNJDC via RPC
          DC object GUID: b9cccd49-d4ce-43a9-8246-6c3499fd8453
          Last attempt @ 2008-10-28 21:20:02 was successful.
          MainOffice\PHPRINT1 via RPC
          DC object GUID: c888385b-86f1-4714-959a-f02e810d9c61
          Last attempt @ 2008-10-28 21:23:05 was successful.

          CN=Configuration,DC=phippsny,DC=org
          NetcongDR\PHNJDC via RPC
          DC object GUID: b9cccd49-d4ce-43a9-8246-6c3499fd8453
          Last attempt @ 2008-10-28 21:20:02 was successful.
          MainOffice\PHPRINT1 via RPC
          DC object GUID: c888385b-86f1-4714-959a-f02e810d9c61
          Last attempt @ 2008-10-28 21:21:26 was successful.

          CN=Schema,CN=Configuration,DC=phippsny,DC=org
          MainOffice\PHPRINT1 via RPC
          DC object GUID: c888385b-86f1-4714-959a-f02e810d9c61
          Last attempt @ 2008-10-28 20:50:02 was successful.
          NetcongDR\PHNJDC via RPC
          DC object GUID: b9cccd49-d4ce-43a9-8246-6c3499fd8453
          Last attempt @ 2008-10-28 21:20:02 was successful.

          DC=DomainDnsZones,DC=phippsny,DC=org
          MainOffice\PHPRINT1 via RPC
          DC object GUID: c888385b-86f1-4714-959a-f02e810d9c61
          Last attempt @ 2008-10-28 21:17:27 was successful.
          NetcongDR\PHNJDC via RPC
          DC object GUID: b9cccd49-d4ce-43a9-8246-6c3499fd8453
          Last attempt @ 2008-10-28 21:20:02 was successful.

          DC=ForestDnsZones,DC=phippsny,DC=org
          MainOffice\PHPRINT1 via RPC
          DC object GUID: c888385b-86f1-4714-959a-f02e810d9c61
          Last attempt @ 2008-10-28 20:50:02 was successful.
          NetcongDR\PHNJDC via RPC
          DC object GUID: b9cccd49-d4ce-43a9-8246-6c3499fd8453
          Last attempt @ 2008-10-28 21:20:02 was successful.

          DC=jacwf,DC=phippsny,DC=org
          MainOffice\PHPRINT1 via RPC
          DC object GUID: c888385b-86f1-4714-959a-f02e810d9c61
          Last attempt @ 2008-10-28 20:50:02 was successful.
          DsReplicaGetInfo() failed with status 8453 (0x2105):
          Replication access was denied.
          DsReplicaGetInfo() failed with status 8453 (0x2105):
          Replication access was denied.

          PHPRINT1 -- BH server in root site

          PHDC1 --- BH server 2 in root site

          I get the same error when trying to connect to the other BH server, PHPRINT1, as well ?

          Comment


          • #6
            Re: Number of Automatically Generated Site Connection ?

            I believe i found the source of my problems.

            I'm running the repadmin command from the child DC logged in as Domain Admin of the child domain --- which shouldn't have permission to certain components of DC's in the root.

            When i log in as an Enterprise Admin on the same box and run the same command, everything comes back successful.

            Could someone confirm this is standard behaviour ?

            also, are there any definitive repadmin commands that should further proove any replication issues ?

            Thanks,

            Comment


            • #7
              Re: Number of Automatically Generated Site Connection ?

              let me clear some things about how the Replication works.
              Technical Reference
              the KCC is responsible for Intrasite partners and replication checker.
              the ISTG (witch is one per site) is responsible for Intersite partners Checker.
              the reason why you see only one connection is b/c you got two DCs on the site, so there is no reason why the other dc would have that partnership as well.

              Comment


              • #8
                Re: Number of Automatically Generated Site Connection ?

                Thanks Guys,

                After reading that article and the quick summary by Akila, i understand now.

                Comment

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