Table of Contents
Advertisement
QoS Overview
based marking, in which case the remark policy defined in the access-egress policy associated with
the access port determines the marking values to use for all the SAPs defined on that port. More
information is available in the section on Access Egress policies in the same guide. Each queue in
a policy is associated with one of the forwarding classes. Each queue can have an individual queue
parameters allowing individual rate shaping of the forwarding class(es) mapped to the queue.
The forwarding class determination per service egress packet is determined at ingress. If the
packet ingressed the service on the same 7210 SAS-X, the service ingress classification rules
determine the forwarding class of the packet. If the packet is received, the forwarding class is
marked in the tunnel transport encapsulation.
On 7210 SAS-X, the FC to queue map is fixed, but the user has the flexibility to assign priority to
a queue and change the scheduling order for that queue.
On 7210 SAS-R6, the FC to queue map is fixed and the queue's priority is determined by the
queue number, with higher queue number having the higher priority. The user can configure a
queue to be a strict queue to change the scheduling behavior for that queue. For more information,
see the chapter on Scheduling in 7210 SAS-R6 below.
Service egress QoS policy ID 1 is reserved as the default service which do not have another
service egress policy explicitly assigned. The characteristics of the default policy are listed in the
following table.
Page 52
7210 SAS-X and 7210 SAS-R6 OS Quality of Service Guide
Advertisement
Table of Contents
