Network QoS Policies

Network QoS policies define egress QoS marking and ingress QoS classification for traffic on network interfaces. The 7705 SAR automatically creates egress queues for each of the forwarding classes on network interfaces.

A network QoS policy defines ingress, egress, and ring handling of QoS on the network interface. The following functions are defined:

• ingress

  • defines label switched path Experimental bit (LSP EXP) value mappings to forwarding classes

  • defines DSCP name mappings to forwarding classes

• egress

  • defines forwarding class to LSP EXP and dot1p value markings

  • defines forwarding class to DSCP value markings

• ring

  • defines dot1p bit value mappings to queue and profile state

The required elements to be defined in a network QoS policy are:

• a unique network QoS policy ID

• egress forwarding class to LSP EXP value mappings for each forwarding class used

• a default ingress forwarding class and in-profile/out-of-profile state

• a default queue and in-profile/out-of-profile state for ring type network QoS policy

Optional ip-interface type network QoS policy elements include the LSP EXP value or DSCP name to forwarding class and profile state mappings for all EXP values or DSCP values received. Optional ring type network QoS policy elements include the dot1p bits value to queue and profile state mappings for all dot1p bit values received.

Network policy ID 1 is reserved as the default network QoS policy. The default policy cannot be deleted or changed. The default network QoS policy is applied to all network interfaces and ring ports (for ring adapter cards) that do not have another network QoS policy explicitly assigned.

Table: Default Network QoS Policy Egress Marking , Table: Default Network QoS Policy DSCP-to-Forwarding Class Mappings, Table: Default Network QoS Policy LSP EXP-to-Forwarding Class Mappings , and Table: Default Network QoS Policy Dot1p-to-Queue Class Mappings list the various network QoS policy default mappings.

Table: Default Network QoS Policy Egress Marking lists the default mapping of forwarding class to LSP EXP values and DSCP names for network egress.

For network ingress, Table: Default Network QoS Policy DSCP-to-Forwarding Class Mappings lists the default mapping of DSCP name to forwarding class and profile state for the default network QoS policy.

Table: Default Network QoS Policy LSP EXP-to-Forwarding Class Mappings lists the default mapping of LSP EXP values to forwarding class and profile state for the default network QoS policy.

Table: Default Network QoS Policy Dot1p-to-Queue Class Mappings lists the default mapping of dot1p values to queue and profile state for the default network QoS policy.