Quality of Service or QoS is a method of providing better service for selected traffic types over various types of packet-switched networks. The network medium used could be any one of several types of technology ranging from Ethernet to Wireless and Frame Relay networks. QoS provides a method for determining which traffic should be given priority on a network segment.
The implemenation of Quality of Service (QoS) on a PIX/ASA Firewall is desired to specify the bandwidth that a certain type of traffic utilizes.
Note: The QoS can be configured from code 7.0(x) and later. This feature was not available in earlier versions of code installed on the PIX. This code is supported only on PIX 515/515E, 525 and 535 series of PIXes.
In order to implement the QOS, complete these steps: