Queue Sharing and Redirection
398 Quality of Service Guide
Access SAP Forwarding Class Based Redirection
Forwarding class redirection is provisioned within the SAP ingress or SAP egress QoS
policy. In each policy, the forwarding class to queue ID mapping may optionally specify a
named queue group instance (policy-based redirection) or may simply tag the forwarding
class for redirection (SAP-based redirection). When the name is specified, the defined queue
ID must exist in the queue group template with the same name.
Redirecting a SAP forwarding class to a queue within a port based queue group using policy-
based redirection requires four steps:
1. Create an ingress or egress queue group template. If the forwarding class redirection
is in the ingress SAP path, an ingress queue group template must be created.
Similarly, an egress queue group template must be created for egress forwarding
class redirection. Optionally, you can create the queues in a template by using default
parameters. Individual queues must be created before they are associated with a
forwarding class. The default queue parameters may be overridden on each port
based queue group.
2. Create an ingress or egress queue group instance with the same name as the template
on the port associated with the SAP. Examples are as follows:
On ingress ports:
config>port>ethernet>access>ingress>queue-group queue-group-name
On egress ports:
config>port>ethernet>access>egress>queue-group queue-group-name [instance
instance-id]
Queue parameter overrides can also be applied at this time.
3. Redirect the SAP ingress or SAP egress QoS policy forwarding class policer or queue
to the queue group name and desired queue ID (Steps 2 and 3 may be done in opposite
order). Examples are as follows:
On ingress:
config>qos>sap-ingress policy-id
fc fc-name
queue queue-id group queue-group-name
On egress:
config>qos>sap-egress policy-id
fc fc-name
queue queue-id group queue-group-name instance instance-id
config>qos>sap-egress policy-id
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