Creating a Service Ingress QoS Policy

After the policy is created, the policy’s behavior can be defined. In addition, the behavior of policy’s FC and queue can be changed from their default settings:

To create an service ingress policy, define the following:

a policy ID value — the system does not dynamically assign a value. Optionally, a policy name can be configured after the policy has been created.
a description — provides a brief overview of policy features
a default forwarding class for the policy — all packets received on an ingress SAP using this ingress QoS policy will be classified to the default forwarding class
a default priority for all packets received on an ingress SAP using this policy
the dot1p parameters — this configuration creates a mapping between the dot1p bits of the ingress traffic and the forwarding class
the DSCP parameters — this configuration creates a mapping between the DSCP of the ingress traffic and the forwarding class
the forwarding class parameters — overrides the default forwarding class for the policy by assigning the forwarding class to one or more of the following queue designations: broadcast-queue, multicast-queue, unknown-queue, or (unicast) queue (see Creating a Service Ingress Forwarding Class)

A service ingress policy is created with a template scope. The scope can be modified to exclusive for a special one-time use policy. Otherwise, the template scope enables the policy to be applied to multiple SAPs.

Use the following CLI syntax to create a service ingress QoS policy:

CLI Syntax:

config>qos
    sap-ingress policy-id
        description description-string
        default-fc fc-name 
        default-priority {low|high}
        dot1p dot1p-priority fc fc-name priority {high|low}
        dscp dscp-name fc fc-name priority {high|low}
        policy-name policy-name

Example:

*A:ALU-1>config>qos#
config>qos# sap-ingress 100 create
config>qos>sap-ingress$ description "Used on VPN SAP"
config>qos>sap-ingress$ default-fc be
config>qos>sap-ingress$ default-priority low
config>qos>sap-ingress$ dot1p 1 fc be priority low
config>qos>sap-ingress$ dscp be fc be priority low
config>qos>sap-ingress$ policy-name ‟sap_ingr_15”
config>qos>sap-ingress$ exit
config>qos# exit
*A:ALU-1#

The following output displays the configuration for service ingress policy 100:

ALU-1>config>qos# info
#--------------------------------------------------
echo "QoS Policy Configuration"
#--------------------------------------------------
....
        sap-ingress 100 create
            description "Used on VPN SAP"
            queue 1 priority-mode create
            exit
            dot1p 1 fc "be" priority low
            dscp be fc "be" priority low
            policy-name ‟sap_ingr_15” 
        exit
...
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