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NC, low

NC, high

BE, low

BE, high

It defines a premium service that effectively creates a dedicated link between peers.

It defines four different AF traffic classes.

Every AF class in each differentiated services node is allocated a certain amount of forwarding resources.

Within each AF class, IP packets are marked with one of three possible drop precedence values.

Scheduler policies cannot be children of an egress port-scheduler.

HQoS provides a static method of allocating scheduling resources to each queue and/or child.

Scheduler policies can be applied to the MDA to schedule network ingress traffic.

Every time a scheduler-policy is assigned to a SAP, a new hardware scheduler is created to service the SAP.

A scheduler applied to multiple SAPs within the same service will result in a single hardware scheduler operating across all SAPs within the service.

The weight specifies the priority of the queue during scheduling up to its CIR.

The weight specifies the priority of the queue during scheduling above-CIR, up to its PIR.

The weight is used to determine how this queue and other queues or schedulers at the same CIR-level share available CIR bandwidth at that level.

The weight is used to determine how this queue and other queues or schedulers at the same level share available above CIR bandwidth at that level.

All buffer space is initially allocated to access pools, and some of it is reallocated to network pools if network interfaces are configured on it.

All buffer space is initially allocated to network pools, and some of it is reallocated to access pools if service SAPs are configured on it.

Buffer space is allocated 50% for access pools and 50% for network pools.

Buffer space is allocated 25% for access pools and 75% for network pools.

Self-generated

Real-time

Best-effort

Assured

It will be discarded because the high-priority-only threshold is exceeded.

It will be stored in the queue’s reserved buffer space and become out-of-profile.

It will be stored in the queue’s reserved buffer space and remain in-profile.

It will contend for shared buffer space with packets from other queues.

An SLA is used to provide automated, real-time testing and alarming for throughput, latency, and jitter across a provider's network.

An SLA is an agreement between a customer and a provider that dictates the treatment of customer traffic across the provider's network.

An SLA allows customers to control all traffic within the service provider's network by prioritizing their traffic over others as desired.

An SLA allows a customer to pre-mark traffic and ensure that traffic is treated as per the agreement within the provider's network.

An SLA is a standard set of network QoS policies that a provider shares to all its customers, allowing them to better understand the treatment of traffic within the provider's network.

The three most significant (first) bits define 8 forwarding classes.

The three least significant (last) bits of the DSCP specify the drop probability.

The full 8 bits of the TOS field are used for DSCP.

To convert DSCP to IP precedence, the three most significant (first) bits are matched.

DSCP provides for eight drop probabilities.