Avaya 555-245-600 manual Examples of QoS implementation

Quality of Service guidelines

See the Cisco documentation for more specific configurations on other types of WAN links (that is, Frame Relay and ATM). Configuration for the X330WAN router is very similar to Cisco, and is well documented in the X330WAN User Guides. For this documentation, see the P330 section at:

http://www.avaya.com/support

Examples of QoS implementation

This section contains sample commands for QoS implementation on Avaya products and Cisco products.

Examples given include:

●Example 1: Cisco router configuration for point-to-point WAN links

●Example 2: C-LANS cannot tag their traffic

●Example 3: More restrictions on the traffic

●Converged infrastructure LAN switches

Example 1: Cisco router configuration for point-to-point WAN links

There is a three-step process to turn on QoS on a Cisco router:

1.Set up a class map that defines “interesting traffic” to be prioritized.

2.Select a queuing strategy. In this case, use a policy map to set priority. Set up a route map that sets the priority level (critical).

3.Apply the policy map to an interface.

In Figure 92: High-quality service across a congested WAN link on page 333, set priority-awareClass-Based Weighted Fair Queuing (CB-WFQ) with Low Latency Queuing (LLQ). Although there are more aggressive QoS strategies, they can have a severe impact on data performance. Those other strategies, including Priority Queuing, Custom Queuing, and RSVP, can be implemented at a later date, if conditions warrant. This is a good starting point.

Figure 92: High-quality service across a congested WAN link on page 333 is used as a reference point. The objective is to assure high quality of service to IP Telephony applications across the congested WAN link.

332 Avaya Application Solutions IP Telephony Deployment Guide