DSCP is part of the Layer 3 header.

DSCP is a 6-bit field.

DSCP specifies eight different priorities.

DSCP specifies four precedence levels.

DSCP is part of the Layer 2 header

DSCP specifies 128 different per-hop behaviors.

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

8

16

6

4

3

Microflow reservations using RSVP

DSCP to EXP translation

Traffic classification

Automatic profiling and policy configuration

Buffer memory management

Traffic scheduling

802.1p adds 16 bits to the Layer 2 header,

802.1p adds 16 bits to the Layer 3 header.

802.1p specifies 64 different priority levels.

802.1p uses a field in the 802.1Q header.

802.1p uses a field in the Layer 3 IP header

802.1p defines a 3-bit Class of Service field.