The P router must be configured to implement a Quality-of-Service (QoS) policy in accordance with the QoS DoDIN Technical Profile.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-78321	SRG-NET-000193-RTR-000114	SV-93027r2_rule		Low

Description
Different applications have unique requirements and toleration levels for delay, jitter, bandwidth, packet loss, and availability. To manage the multitude of applications and services, a network requires a QoS framework to differentiate traffic and provide a method to manage network congestion. The Differentiated Services Model (DiffServ) is based on per-hop behavior by categorizing traffic into different classes and enabling each node to enforce a forwarding treatment to each packet as dictated by a policy. Packet markings such as IP Precedence and its successor, Differentiated Services Code Points (DSCP), were defined along with specific per-hop behaviors for key traffic types to enable a scalable QoS solution. DiffServ QoS categorizes network traffic, prioritizes it according to its relative importance, and provides priority treatment based on the classification. It is imperative that end-to-end QoS is implemented within the IP core network to provide preferred treatment for mission-critical applications.

Description

Different applications have unique requirements and toleration levels for delay, jitter, bandwidth, packet loss, and availability. To manage the multitude of applications and services, a network requires a QoS framework to differentiate traffic and provide a method to manage network congestion. The Differentiated Services Model (DiffServ) is based on per-hop behavior by categorizing traffic into different classes and enabling each node to enforce a forwarding treatment to each packet as dictated by a policy. Packet markings such as IP Precedence and its successor, Differentiated Services Code Points (DSCP), were defined along with specific per-hop behaviors for key traffic types to enable a scalable QoS solution. DiffServ QoS categorizes network traffic, prioritizes it according to its relative importance, and provides priority treatment based on the classification. It is imperative that end-to-end QoS is implemented within the IP core network to provide preferred treatment for mission-critical applications.

STIG	Date
Router Security Requirements Guide	2019-03-20

Details

Check Text ( C-77879r1_chk )
Review the router configuration and verify that a QoS policy has been configured to provide preferred treatment for mission-critical applications in accordance with the QoS DoDIN Technical Profile. Verify that the class-maps are configured to match on DSCP values that have been set at the edges. Verify that the policy map is configured to reserve the bandwidth for each traffic type as specified via the class-maps. Verify that an output service policy is bound to all interfaces. If the router is not configured to implement a QoS policy in accordance with the QoS DoDIN Technical Profile, this is a finding.

Check Text ( C-77879r1_chk )

Review the router configuration and verify that a QoS policy has been configured to provide preferred treatment for mission-critical applications in accordance with the QoS DoDIN Technical Profile.

Verify that the class-maps are configured to match on DSCP values that have been set at the edges.

Verify that the policy map is configured to reserve the bandwidth for each traffic type as specified via the class-maps.

Verify that an output service policy is bound to all interfaces.

If the router is not configured to implement a QoS policy in accordance with the QoS DoDIN Technical Profile, this is a finding.

Fix Text (F-85049r1_fix)
Configure a QoS policy on each router in accordance with the QoS DoDIN Technical Profile.