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The Juniper PE router must be configured to enforce a Quality-of-Service (QoS) policy in accordance with the QoS GIG Technical Profile.


Overview

Finding ID Version Rule ID IA Controls Severity
V-217079 JUNI-RT-000740 SV-217079r604135_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.
STIG Date
Juniper Router RTR Security Technical Implementation Guide 2022-06-07

Details

Check Text ( C-18308r297105_chk )
Review the router configuration and verify that it has been configured to enforce a QoS policy in accordance with the QoS GIG Technical Profile (GTP-0009). The router must be configured to use either configured or default Behavior Aggregate (BA) classifier on all interfaces as shown in the example below:

class-of-service {
…
…
…
}
interfaces {
ge-0/0/1 {
unit 0 {
classifiers {
dscp default;
}
}
}
ge-0/1/0 {
unit 0 {
classifiers {
dscp default;
}
}
}
ge-1/0/1 {
unit 0 {
classifiers {
dscp default;
}
}
}
ge-1/1/0 {
unit 0 {
classifiers {
dscp default;
}
}
}

Note: The GTP QOS document (GTP-0009) can be downloaded via the following link:
https://intellipedia.intelink.gov/wiki/Portal:GIG_Technical_Guidance/GTG_GTPs/GTP_Development_List

If the router is not configured to enforce a QoS policy in accordance with the QoS DODIN Technical Profile, this is a finding.
Fix Text (F-18306r297106_fix)
Configure all interfaces to use a configured or the default BA classifier as shown in the example below:

[edit class-of-service interfaces]
set ge-0/0/1 unit 0 classifiers dscp default
set ge-0/1/0 unit 0 classifiers dscp default
set ge-1/0/1 unit 0 classifiers dscp default
set ge-1/1/0 unit 0 classifiers dscp default

Note: The GTP QOS document (GTP-0009) can be downloaded via the following link:
https://intellipedia.intelink.gov/wiki/Portal:GIG_Technical_Guidance/GTG_GTPs/GTP_Development_List