HS QoS policies

General Information

HS QoS policies allow you to configure and manage ESM and services using the HSQ IOM4-e-HSMDA on the 7750 SR, Release 20.10 and earlier. There are four types of HS QoS policies:

• HS Attachment policy: The high scale (HS) Attachment policy defines how queues map to the scheduling classes associated with the HS port scheduler policy. The HS Attachment policy also defines how multiple queues collapse into WRR (weighted round robin) groups allowing multiple queues to map to a single scheduling class. See To configure a HS Attachment policy.

• HS Pool policy: The high scale (HS) Pool policy is used to control how buffers are distributed to root-tier and mid-tier buffer pools and how mid-tier buffer pools attach to root-tier buffer pools. The HS pool policy is applied to the Forwarding Plane at the IOM level on a 7750 SR node. See To configure a HS Pool policy.

• HS Port Pool policy: The high scale (HS) Port Pool policy is used to control how buffers are distributed to port-class buffer pools and how port-class buffer pools attach to mid-tier buffer pools. The HS port pool policy is applied to an HSQ (IOM4-e-HSMDA) egress port on a 7750 SR, Release 20.10 and earlier. See To configure a HS Port Pool policy.

• HS Scheduler policy: The high scale (HS) Scheduler policy defines the scheduling behavior of each HS scheduler class for all queues associated to an HSQ (IOM4-e-HSMDA) egress port on a 7750 SR, Release 20.10 and earlier, including specifying the Max. rate, scheduling class type (rate/group), bandwidth rate, and weight-in-group. See To configure a HS Scheduler policy.