Clients that already have a software update point continue to use it until it can't be reached. On the Home tab, in the Create group, select Create Boundary Group. Import your subnet exclusion list as a comma-separated subnet string. It also reflects the Boundary group to Site Server relationship. For client content requests, Configuration Manager includes only distribution points that have the requested content in the list of site systems returned. To address this problem now, use the Never fallback option to make sure that clients only fall back to management points with which they can communicate. MMS 2013 videos will also help you clear your boundary concepts in CM 2012. When Active Directory System Discovery discovers a new resource, the site evaluates network information for the resource against the boundaries in boundary groups. In the System Center Configuration Manager console, click on “Administration”, expand “Hierarchy Configuration” and click on “Boundary Groups”. The behavior of this hierarchy setting, Clients prefer to use management points specified in boundary groups, changed in version 1802. A client in boundary group Z fails to reach its last known-good software update point. Due to the real-time nature of task sequence processing, it doesn't wait for the failover time on a neighbor boundary group. If you enable this option, the management point only includes in the content location list peer sources that are in the same subnet as the client. Select OK to save the new boundary group, or continue to the next section to configure the boundary group. The Add Site Systems window only lists servers that have supported site system roles. When a client fails to find content from a distribution point in the current group, this time is when the client begins to search content locations from neighbor boundary groups. In the Fallback Boundary Groups window, select the boundary group to configure. If the client fails to find content from its current boundary group after searching for 10 minutes, it then adds the distribution points from the BG_B boundary group to its search. It adds servers to the available pool of software update points that are in it's current and any neighbor boundary groups configured for 120 minutes or less. A boundary group can have more than one relationship, each with a specific neighbor boundary group. On the General tab, select the checkbox to Use a fallback site. Set a fallback time for the following site system roles: Distribution point. This setting is dependent upon the preceding option. The following script is a sample way of changing this value. For other service location requests, Configuration Manager includes only site systems that host the type of role requested which may be one of the following: This behavior enables the client to select the nearest server to communicate with for each request type. This information is site data and only available on primary sites. When the management point is in both a neighbor and the site default boundary groups, the locality is 2. This pool now includes servers from both the BG_A and BG_B boundary groups. When you set a new time in minutes for fallback or block fallback, that change affects only the link you're configuring. These links form relationships that you configure on the new boundary group properties tab named Relationships: Each boundary group that a client is directly associated with is called a current boundary group. Configure the second neighbor group (BG_C) to be used after 20 minutes. When a client is a member of more than one boundary group, it defines its current boundary group as a union of all its boundary groups. Common scenarios for enabling this option: Your boundary group design for content distribution includes one large boundary group that overlaps other smaller boundary groups. These site systems are of the appropriate type associated with each boundary group that includes the client's current network location: During software distribution, clients request a location for deployment content on a valid content source. The implied link is a default fallback option from a current boundary group to the site's default boundary group. During content deployment, if a client requests content that isn't available from a source in its current boundary group, the client continues to request that content. Boundary Groups were introduced in ConfigMgr 2012 to combine boundaries together and give them one of two common purposes: Content Location Site Assignment These are the same two things that boundaries were used for in ConfigMgr 2007; however, all boundaries were used for both purposes in 2007 and there was no way to separate them out. A client tries to use a preferred management point from its assigned site before using one not configured as preferred from its assigned site. You can configure each boundary group with an assigned site for clients. In 1702 Microsoft required that all SUPs be listed as Site System Servers. This setting reverses that priority for clients that are in the same subnet as the peer cache source. Override this default behavior of 120 minutes by explicitly associating the default site boundary group to a current group. Configure site assignment and select site system servers, Boundary group options for peer downloads. In 2012, you assign boundaries for one (or both) … Changes to a boundary groups assigned site only apply to new site assignment actions. For example, when a laptop travels to a remote office location. This link becomes active after 120 minutes. This pool includes the servers in boundary group A, which were previously added to the pool of available servers. Configuration Manager sends this list to a client in response to a content or service location request. Set a specific time in minutes, or block fallback entirely to prevent its use. By default, the management point prioritizes peer cache sources at the top of the list of content locations. Before you start this change, make sure that your software update points are in the correct boundary groups. The client tries different content sources in its current boundary group until it reaches the fallback period for a neighbor or the default site boundary group. When a client fails to find an available site system in its current boundary group, the configuration of each relationship determines when it begins to search a neighbor boundary group. Use the percent sign (%) as a wildcard character. You can configure Fallback times (in minutes) for software update points to be less than 120 minutes. Applies to: Configuration Manager (current branch). Configuration Manager supports overlapping boundary and boundary group configurations for content and service location requests. For each type of supported site system role, configure independent settings for fallback to the neighbor boundary group. The state migration point role doesn't use fallback relationships. Both are across a WAN from the other two boundary groups. Clients switch to the new software update point during their next software updates scan cycle. The task sequence tries to acquire content in the following order: Distribution points in the current boundary group, Distribution points in a neighbor boundary group. For more information, see Boundary groups. The client continues to contact each distribution point for two minutes, and then switches to the next server in its pool. After failing to reach its original server for two hours, the client then uses a shorter cycle to establish a connection to a new software update point. 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