HP-UX IPQoS A.01.00 Administrator's Guide (October 2005)

Getting Started with HP-UX IPQoS
HP-UX IPQoS Deployment Components
Chapter 346
HP-UX IPQoS Deployment Components
The key administrative components used with HP-UX IPQoS are:
• HP-UX IPQoS configuration files
•HP-UX IPQoS ipqosadmin administration tool
The following sections provide overview information about each of these components.
HP-UX IPQoS Configuration Files
HP-UX IPQoS filters and policies are defined in HP-UX IPQoS configuration files as follows:
— Filters define traffic classes (filter blocks).
— Policies determine behaviors to apply to the defined traffic classes (policy blocks).
— Policies are assigned to configured adapters (NICs) (adapter blocks).
HP-UX IPQoS configuration files are created using a text editor such as vi.
There are no HP-UX IPQoS specific restrictions on the configuration file name or location. HP
recommends that you use a defined convention to locate and name the files in accordance with
your organization’s operational style.
With HP-UX IPQoS you can choose to have policies separate and in distinct configuration
files, or you can combine several conditions in fewer filters and fewer policies in one
configuration file. Consider the tradeoffs between managing a larger number of simplistic
configuration files versus managing fewer configuration files with more complex filters and
policies defined.
When you must add an action by expanding filters and policies, you can either create new
filters and policies or modify existing ones.
The Role of Filters
To prioritize preferred types of traffic, you must first classify the traffic.
Traffic classes are defined in filters. In each filter, you specify attributes such as the source
address or destination transport port number for packets you want the filter to select. A
packet matches a filter if and only if it matches every one of the attributes specified for the
filter.