Glossary

adapter block In the context of an HP-UX IPQoS configuration file, defines a specific adapter controlled by HP-UX IPQoS, and the policies it uses.

bandwidth The amount of data that can be sent over a network in a fixed amount of time. Typically expressed in bits per second (or in Kb/s or Mb/s).

bandwidth limiting Lowering the rate at which data can be sent; preventing a traffic source from sending as fast as it otherwise can.

classifier A device that selects packets based on the aspects of those packets, according to defined rules.

conditioner A device that performs control functions including metering, marking, policing and shaping. It does this by marking packets with the appropriate DSCP, and by altering characteristics of traffic streams to bring them into compliance with traffic profiles.

Differentiated Services (DS) The differentiated services framework as defined in RFC 2475.

Differentiates Services Codepoint

See DSCP.

DiffServ A shorthand term for

Differentiated Services.

DS behavior aggregate A collection of packets with the same DSCP value, crossing a network device in a particular direction.

DS-compliantA node or device that is enabled to support DiffServ functions and behaviors as defined in RFC 2475.

Differentiated Services Codepoint (DSCP) A specific value of the codepoint portion of the DS field. Recommended codepoints map to specific, standardized PHBs. Multiple codepoints can map to the same PHB.

DS field The leftmost 6-bits of the TOS field for IPv4 packets and the leftmost 6-bits of the Traffic Class field for IPv6 packets.

expansion The process in HP-UX IPQoS where, if a host name or the service name specified as a filter attribute resolves to more than one address or port, the filter is automatically duplicated for each address or port.

filter block In the context of an HP-UX IPQoS configuration file, defines a specific filter against which to match traffic. A packet matches the filter only if all specified traffic class attributes match those of the packet.

implicit default flow The behavior assigned to packets that do not match any specified filter. The behavior assignment in this case is setting 80Kbps as the reservation bandwidth, no set maximum bandwidth, and no marking actions specified.

marker A device that sets the DSCP of a packet based on predefined rules.

Glossary

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HP UX IPQos Software manual Glossary, See Dscp

UX IPQos Software specifications

HP-UX IPQoS is a sophisticated software solution designed to enhance the network performance of HP's Unix-based operating system, HP-UX. This software focuses on Quality of Service (QoS) mechanisms that ensure efficient bandwidth utilization and prioritize network traffic to meet the demands of various applications.

One of the main features of HP-UX IPQoS is its ability to define traffic priorities. Administrators can classify traffic into different priority levels, allowing critical applications to receive the bandwidth they need while less important traffic can be deprioritized. This feature is essential in environments where bandwidth is a limited resource, ensuring that business-critical processes maintain their performance even during peak usage times.

The software employs advanced traffic shaping techniques that allow the management of data flow in the network. By controlling the rate of traffic and smoothing out bursts, IPQoS helps prevent network congestion, leading to a consistently reliable user experience. In addition, it can manage both inbound and outbound traffic, ensuring optimal performance in various network scenarios.

Another significant characteristic of HP-UX IPQoS is its integration with other network management tools. It operates seamlessly with HP’s Network Management Suite, providing a holistic view of network performance. This integration facilitates easier troubleshooting and monitoring, as administrators can correlate data from different sources for comprehensive insights.

Moreover, HP-UX IPQoS supports various protocols, including DiffServ and MPLS. By adhering to these standards, it positions itself as a versatile tool that can operate in diverse network environments, providing flexibility and ease of deployment. Additionally, the software supports policy-based management, enabling organizations to implement specific rules tailored to their network requirements.

Security is also a critical focus of HP-UX IPQoS. The software provides mechanisms to enforce traffic policies while safeguarding against potential threats. By ensuring that only authorized traffic flows through the network, it minimizes the risk of attacks and data breaches, contributing to a more secure IT environment.

The user interface of HP-UX IPQoS is designed for ease of use, allowing network administrators to configure settings, monitor performance, and generate reports without extensive training. This user-friendliness accelerates the deployment process and enhances the overall management of network resources.

In summary, HP-UX IPQoS is a robust and versatile network management solution that brings substantial benefits to organizations looking to optimize their network performance. With its traffic prioritization features, integration capabilities, support for industry standards, and focus on security, it stands out as an essential tool for maintaining effective and secure network operations in a dynamically changing IT landscape.