Hello Andrea,
"The QoS Group The QoS group is a field in the packet data structure internal to the router. The QoS group is used to mark packets matching certain user-specified classification criteria. It is important to note that a QoS group is an internal label to the router and is not part of the IP packet header.
Packet coloring internal to the router is done using QoS groups. Cisco QoS features supporting this function include CAR and QPPB."
example:
Using CAR to Classify Traffic Based on QoS Groups
interface Hssi 0/0/1
rate-limit access-group 1 input 45000000 22500 22500 conform-action set-qos-transmit 3 exceed-action drop
rate-limit input 45000000 22500 22500 conform-action set-qos-transmit 0 exceed- action drop
access-group 1 permit 215.215.215.0 0.0.0.255
There are some great books about QOS on Cisco Press.
Cisco.Press.-.IP.Quality.of.Service.-.Vegesna, there are some good examples in the use of QOS GROUP.
HTH,
if it does, please rate this post.
Vlad
