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Client Communication in Mixed Mode and Native Mode

Applies To: System Center Configuration Manager 2007, System Center Configuration Manager 2007 R2, System Center Configuration Manager 2007 R3, System Center Configuration Manager 2007 SP1, System Center Configuration Manager 2007 SP2

The site mode configuration in a Configuration Manager 2007 site affects the client-to-server communication, both within its assigned site and when roaming between sites in different modes.

Client-to-Server Communication Within a Site

The following table displays the change of protocol communication from HTTP to HTTPS for the different site modes when a client is communicating with site systems in its assigned site.

 

Site System Mixed Mode Native Mode

Management point

HTTP

HTTPS

Standard distribution point

HTTP

HTTPS

Software update point

HTTP or HTTPS

HTTPS

State migration point

HTTP

HTTPS

Fallback status point

HTTP

HTTP

Server locator point

HTTP

HTTP

noteNote
In native mode, client computers must be configured for HTTP communication for roaming and site assignment to communicate with a server locator point. If native-mode client computers are not configured with this option, they cannot communicate with a server locator point in native mode. Mobile device clients do not communicate with a server locator point, and do not support roaming capability.

The following picture shows this change of protocol communication from HTTP to HTTPS for the different site modes when a client is communicating with site systems in its assigned site.

Mixed mode client-to-server protocols Native mode client-to-server protocols

The following site system communications are not affected by the by site mode, because these are initiated by the Microsoft Windows operating system or browser rather the Configuration Manager 2007 client:

  • System Health Validator point: The computer sends statement of health messages to the System Health Validator point, using the Network Access Protocol communication established with the Network Policy Server.

  • PXE Service point: The computer uses the PXE protocol to boot the computer and install an operating system.

  • Reporting point: The computer uses the selected Web browser to connect to the reporting point. You can configure the reporting point for HTTP or HTTPS independently from the site mode.

Additionally, branch distribution points will always use the server message block (SMB) protocol in both mixed mode and native mode, and standard distribution points will also use SMB if they are not configured with the following option: Allow clients to transfer content from this distribution point using BITS, HTTP, and HTTPS (required for device clients and Internet-based clients.

There are also some situations where clients can communicate with standard distribution points over SMB rather than HTTP or HTTPS, such as when advertisements are configured with the option Run program from distribution point, and also if HTTP fails in mixed mode or HTTPS fails on the intranet in native mode.

Client-to-Server Communication When Roaming Between Sites in Different Modes

For an overview of roaming in Configuration Manager 2007, see About Client Roaming in Configuration Manager.

When a mixed mode client roams into a native mode site, the mixed mode client will not be able to communicate with the resident native mode management point or with any native mode distribution points in that site. In this scenario, roaming does not work, and the client will communicate with its assigned management point and download content from distribution points in its own site.

When a native mode client computer roams into a mixed mode site, the behavior varies depending on whether the native mode client computer is configured for HTTP communication for roaming and site assignment. The following table displays this difference.

 

Site System Client communication if HTTP communication for roaming and site assignment is not configured Client communication if HTTP communication for roaming and site assignment is configured

Client’s assigned (native mode) management point

Yes, using HTTPS

Yes, using HTTPS

Client’s assigned site (native mode) distribution point

Yes, using HTTPS

Yes, using HTTPS

Mixed mode resident management point

No

Yes, using HTTP

Mixed mode distribution point

No

Yes, using HTTP

The following picture shows the roaming behavior for a native-mode client computer if the option for HTTP communication for roaming and site assignment is not configured.

Native mode roaming without HTTP option enabled

The following picture shows the roaming behavior for a native-mode client computer if the option for HTTP communication for roaming and site assignment is configured.

Native mode roaming with HTTP option enabled

See Also

For additional information, see Configuration Manager 2007 Information and Support.
To contact the documentation team, email SMSdocs@microsoft.com.
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