HP-UX IPQoS Configuration Files

Policy Blocks

IMPORTANT Traffic regulation is approximate, not exact. Acceptable tolerance is plus or minus 10% of specified res and max rates.

IMPORTANT Both res bandwidth and max bandwidth specifications apply only to first-hop transmission rates and do not imply any sort of end-to-end bandwidth guarantee.

dscp d

Specifies the DSCP value to be set in all matching packets.

This field is carried in the leftmost 6-bits of the TOS field for IPv4 packets, and in the leftmost 6-bits of the Traffic Class field for IPv6 packets.

Valid values for d can range from 0 to 63 inclusive.

The significance of the value depends on router configuration specifics. DS-aware router configuration includes a mapping between DSCP values and per-hop behaviors (PHBs). HP-UX IPQoS does not use the DSCP values in terms of PHB behavior, its role is solely to set DSCP values.

NOTE

Packets transiting administrative boundaries can have their

 

DSCP fields changed by boundary routers. This is usually

 

defined in peering agreements between administrations.

 

 

DS-aware routing configuration is outside the scope of this guide. For common mapping suggestions and additional information, refer to RFC 2597 Assured Forwarding PHB Group and RFC 2598 An Expedited Forwarding PHB.

vpr priority

Specifies the three-bit priority field of the VLAN tag. HP-UX IPQoS enables you to change the VLAN priority field only, not the VLAN ID field.

Values for priority can range between 0 to 7 inclusive.

VLAN tags are not propagated after the first hop.

74

Chapter 4

Page 74
Image 74
HP UX IPQos Software manual Vpr priority

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.