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Add Site and Site Link (Was... The Chicken or the Egg)

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  • Add Site and Site Link (Was... The Chicken or the Egg)

    Howdy all!
    Let me start off by saying I'm not well versed with AD but I have managed to be able to get around ok with what I've inherited. My problem is this, I have a need to create another site in AD. Using the "Sites and Services" MMC I can see how to add a site however it looks like a need to add a site link first. To add a site link I need to have a site created for it... It's the same thing with adding a subnet Soooo.... how do i get this process started? It's like a snake chasing it's own tail.

    be nice to me I know I'm out of my league here
    Last edited by Ossian; 23rd January 2008, 22:25. Reason: Title Change

  • #2
    Re: ... The Chicken or the Egg

    I gues in current state you only have the default first site.
    So to create a new site go to sites and services, and add a site.
    In the same box the default first site link is presented, klik it and than click ok.
    Now you have 2 sites.

    Sites - One or more IP subnets. Generally this refers to a physical site such as a portion of the organization in particular city or part of a city which is linked by leased lines or other media to other parts of the organization.

    Subnets - Subnets must be created in each site object before it is really active. A network address and subnet mask is used to define the subnet.

    Site links - It is a list of two or more connected sites. Whether the link will use RPC or SMTP for passing data must be determined before creating the link since it cannot be changed. Selection IP means selection RPC over IP. Site link information includes: Replication schedule - Specify the times the sites can replicate and how often they attempt replication.
    - Link cost - High for a low bandwidth link. A high cost link gets lower priority. A lower priority link is normally used if there are more than one link to the same location.

    Member sites - Lists sites that are connected using the site link.
    Transport Mechanism - RPC or SMTP (Mail) is specified.
    SMTP (Mail) - It cannon be used for replication inside the same site and is a form of asynchronous replication.

    RPC - Requires more bandwidth than SMTP.

    Bridgehead server - A domain controller that is used to send replication information to one or more other sites across a site link.
    Site link bridges - Allows one site in a string of sites to replicate through one or two sites to a second or third site. These are only used for fine control of how replication will occur across WAN links. This is actually done automatically by AD, without fine control. To use this feature, automatic bridging of site links must be turned off. You must have three sites to create a site link bridge since it takes three sites and two site links to make a string of sites.

    Global catalog servers - The global catalog is a searchable master index with data about all objects in a forest. The global catalog server maintains this catalog. It:
    Helps Active Directory resources be located by users.
    During logon, it provides group membership information.
    There is one in each domain by default, and the first domain controller in the domain is originally the global catalog server. It is worthwhile to have a global catalog server on each side of a WAN connection if the domain is spread out across a WAN.
    Set-Location Malibu Beach



    • #3
      Re: ... The Chicken or the Egg

      Title changed

      As said, there is always a "default-first-site-link" to use, then you can add other links as appropriate
      Tom Jones
      MCT, MCSE (2000:Security & 2003), MCSA:Security & Messaging, MCDBA, MCDST, MCITP(EA, EMA, SA, EDA, ES, CS), MCTS, MCP, Sec+
      PhD, MSc, FIAP, MIITT
      IT Trainer / Consultant
      Ossian Ltd

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