Add and Remove the Request Forwarder

The request forwarder is installed by default and consists of two parts: an ISAPI filter and an ISAPI extension. To function properly, the reqest forwarder should exist on all or none of the cluster members. You cannot have the request forwarder installed on some members and not others. To ensure consistency across the cluster, complete the following procedures on the cluster controller. Members acquire the appropriate request forwarding settings when the cluster is synchronized.

The following procedures describe how to add and remove the ISAPI filter and extension for the request forwarder.

To remove the ISAPI filter for the request forwarder

1. In the IIS snap-in, right-click the cluster controller from which to remove the request forwarder, and then on the pop-up menu, click Properties.

   The controller_name Properties dialog box appears.

2. Under Master Properties, click WWW Service, and then click Edit.

   The WWW Service Master Properties dialog box appears.

3. Click the ISAPI Filters tab.

4. Click RfFiltExt, and then click Remove.

5. Click Apply.

6. Click OK twice to return to the IIS snap-in.

7. Restart IIS.

To remove the ISAPI extension for the request forwarder

1. In the IIS snap-in, right-click the cluster controller from which to remove the request forwarder, and then click Properties.

   The controller_name Properties dialog box appears.

2. Under Master Properties, click WWW Service, and then click Edit.

   The WWW Service Master Properties dialog box appears.

3. Click the Home Directory tab.

4. Under Application Settings, click Configuration.

5. Click the App Mappings tab, from the Application Mappings list, click .rqfw, and then click Remove.

   The Applications/Script Mappings dialog box appears.

6. Click Yes to confirm removal of .rqfw, and then click Apply.

7. Click OK three times to return to the IIS snap-in.

To reload the ISAPI filter for the request forwarder

1. In the IIS snap-in, right-click the cluster controller on which to reload the request forwarder, and then on the pop-up menu, click Properties.

   The cluster_name Properties dialog box appears.

2. Under Master Properties, click WWW Service, and then click Edit.

   The WWW Service Master Properties dialog box appears.

3. Click the ISAPI Filters tab, and then click Add.

4. In the Filter Name box, enter RfFiltExt.

5. In the Executable box, enter the location of the file name for the request forwarder executable or click Browse to locate the file.

   The default location for the executable file is % root %\Program Files\Microsoft Application Center\RfFilExt.dll.

6. Click OK, and then click Apply.

7. Click OK twice to return to the IIS snap-in.

8. Restart IIS.

To reload the ISAPI extension for the request forwarder

1. In the IIS snap-in, right-click the cluster controller on which to reload the request forwarder, and then on the pop-up menu, click Properties.

   The controller_name Properties dialog box appears.

2. Under Master Properties, click WWW Service, and then click Edit.

   The WWW Service Master Properties dialog box appears.

3. Click the Home Directory tab.

4. Under Application Settings, click Configuration, and then click Add.

5. In the Add/Edit Application Extension Mapping dialog box, in the Executable box, enter % root %/Program Files/Microsoft Application Center/RfFilExt.dll

6. In the Extension box, enter .rqfw, and then click OK.

7. Click Apply.

8. Click OK three times to return to the IIS snap-in.

Related Topics

• For more information about limiting the types of files that are forwarded, see Exclude Specific File Types from Request Forwarding.

• For more information about the request forwarder, see Handling Requests in Load-Balanced Environments.

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