Cisco Cisco Unified Customer Voice Portal 10.0(1)
D-3
Cisco Internet Service Node (ISN) Configuration and Administration Guide
OL-1251-03
Appendix D Configuring Cisco Content Services Switch (CSS) for Use with ISN
General Approach
Http Redirects
In order to reduce streaming media traffic, the CSS media server services are configured as http redirect
services (also referred to as ‘remote’ services) within the CSS. With the absence of a ‘local’ service, this
configuration will choose an available service based on the content rule, and present the requesting
gateway with an http 302 redirect message. Media streaming will occur directly from the GW to the
individual Media Server. For specific information on http redirection services, please see “Specifying a
Service Type” in Chapter 1 of the CSS Basic Configuration Guide.
services (also referred to as ‘remote’ services) within the CSS. With the absence of a ‘local’ service, this
configuration will choose an available service based on the content rule, and present the requesting
gateway with an http 302 redirect message. Media streaming will occur directly from the GW to the
individual Media Server. For specific information on http redirection services, please see “Specifying a
Service Type” in Chapter 1 of the CSS Basic Configuration Guide.
Content Rule
Using the content owner you have defined, define a content routing rule for the ISN Media Servers. CSS
offers many balancing types for choosing an active media server. This application uses the default
defined round-robin as the balancing method. Additionally, a primarySorryServer is defined.
offers many balancing types for choosing an active media server. This application uses the default
defined round-robin as the balancing method. Additionally, a primarySorryServer is defined.
The following content rule implements a layer 5 http round-robin routing rule for two media servers,
with the third server reserved for failover.
with the third server reserved for failover.
Example 0-2
Content Rule
content MEDIA
vip address 10.1.1.4
protocol any
port 80
url "/*"
add service mediaserver1
add service mediaserver2
primarySorryServer mediaserver3
protocol any
port 80
url "/*"
add service mediaserver1
add service mediaserver2
primarySorryServer mediaserver3
Keepalives
The media servers are standard http servers. CSS supports varying methods of keepalives used to
determine the availability of an individual service.
determine the availability of an individual service.
For media servers, the http keepalive method is recommended. This will ensure that CSS determines the
availability of a server at the application layer. In order to implement this keepalive method, the service
must identify an available html page which the keepalive will use to determine http availability. For this
reason, in addition to the ISN prompt audio files, the server should have an available html document
defined. The example assumes an “index.html” document is available on the media servers. The http
keepalive method will continuously check for the availability of this document as a means to determine
that the server is alive and capable of serving documents.
availability of a server at the application layer. In order to implement this keepalive method, the service
must identify an available html page which the keepalive will use to determine http availability. For this
reason, in addition to the ISN prompt audio files, the server should have an available html document
defined. The example assumes an “index.html” document is available on the media servers. The http
keepalive method will continuously check for the availability of this document as a means to determine
that the server is alive and capable of serving documents.
It is essential that all media servers included in a Media Server Content rule contain all of the ISN audio
prompt files intended for use by that content rule to ensure that no matter which server CSS directs the
request to, the prompt file will be available.
prompt files intended for use by that content rule to ensure that no matter which server CSS directs the
request to, the prompt file will be available.
Use these CSS commands to setup the http keepalives while configuring each media server service:
keepalive type http
keepalive uri "/index.html"