QoS Policies
7210 SAS D, E, K OS Quality of Service Guide Page 49
Service ingress QoS policy ID 1 is reserved for the default service ingress policy. The default
policy cannot be deleted or changed. The default service ingress policy is implicitly applied to all
SAPs which do not explicitly have another service ingress policy assigned. In the default policy,
all traffic is mapped to the default forwarding class which uses a meter by default. The
characteristics of the default policy are listed in Table 11.
Table 11: Default Service Ingress Policy ID 1 Definition
Service Ingress QoS policies on 7210 SAS-K
Service ingress QoS policies define ingress service forwarding class queues and map traffic flows
to forwarding class.
On 7210 SAS-K, when a service ingress QoS policy is created, it always has one queue defined
that cannot be deleted. The queue is used to queue all the traffic, both the unicast traffic and the
multipoint traffic. These queues exist within the definition of the policy. The queues only get
instantiated in hardware when the policy is applied to a SAP. Multipoint queues are instantiated
only if the SAP ingress policy defines a multipoint queue. By default, software does not allocate
any multipoint queues.
In the simplest service ingress QoS policy, all traffic is treated as a single flow and mapped to a
single queue, including all flooded traffic.
The required elements to define a service ingress QoS policy are:
A unique service ingress QoS policy ID.
• A QoS policy scope of template or exclusive.
• At least one default forwarding class queue. The parameters that can be configured for a
queue are discussed in Queue Parameters on page 45.
Characteristic Item Definition
Meters Meter 1 1 (one) meter all unicast traffic:
• Forward Class: best-effort (be)
• CIR = 0
• PIR = max (line rate)
• MBS, CBS = default (values derived from applicable policy)
Meter 11 1 (one) meter for all multipoint traffic:
• CIR = 0
• PIR = max (line rate)
• MBS, CBS = default (values derived from applicable policy)
Flows Default Forwarding
Class (be)
1 (one) flow defined for all traffic:
• All traffic mapped to best-effort (be)
To Next Page
Loading...
Need help?
General
