Streaming Media Supplement sa2150 and sa2250

Chapter 7 Configuring Media-IXT for RealNetworks

To configure RealProxy support of virtual IP addresses:

1. Create additional logical interfaces attached to the primary physical interface and configure IP addresses

using operating system administration tools.

2. Add the reverse proxy mapping rules, if required.

3. Follow the procedure for adding IP Bindings using the RealProxy GUI (see “To configure RealProxy to

listen on selected interfaces:” above).

4. Restart RealProxy.

Configuring transparent proxy caching for RealNetworks

The Adaptive Redirection Module has been installed at the factory.

You must enable ARM and choose any protocols besides HTTP for which you want Media-IXT to provide

transparency. If ARM is enabled at all, Media-IXT provides HTTP transparency. Choose RTSP if you want

Media-IXT to perform transparent proxy caching for RealNetworks content.

See the HP Cache Server Appliance Administrator Guide for information about ARM.

Configuring a layer 4 switch for transparency

Layer 4 switches from Alteon, Arrowpoint, and Foundry are among those qualified to provide transparency for

Media-IXT. Contact your switch vendor for documentation about how to operate the switch.

For sample layer 4 switch configurations providing transparency for streaming media protocols (RTSP and

MMS) as well as HTTP, see the HP Technical Support website:

http://www.hp.com/serverappliances/support

Configuring a WCCP2-compatible router for transparency

WCCP2-compatible routers provide transparency for Media-IXT. Contact your router vendor for

documentation about how to operate the router.

For more information about these issues, and sample WCCP2 router configurations providing transparency for

streaming media protocols (RTSP and MMS) as well as HTTP, see the HP Technical Support website:

http://www.hp.com/serverappliances/support

Configuring reverse proxy caching for RealNetworks

For RTSP, the mapping rules for reverse proxy caching are in the remap.config file. Be aware that these

directions document only one scenario for reverse proxy, in which Media-IXT answers to the advertised name

of the website. That is, the advertised name of the website resolves to an IP address which is Media-IXT’s,

whether virtual or not.

Reverse proxy mapping rules must be different when a different reverse proxy scenario applies. See the

explanation of these issues in “Understanding forward proxy, reverse proxy, and transparency” on page 6.

Also be aware that writing correct mapping rules is necessary but not sufficient for reverse proxy to work

correctly. The Fully Qualified Domain Name portion of the URLs of the origin server’s content must contain

the advertised name of the website. Again, see the section just cited.