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

From Juniper Router RTR Security Technical Implementation Guide

Part of SRG-NET-000193-RTR-000114

Associated with: CCI-001095

JUNI-RT-000750_rule The Juniper PE or P router must be configured to implement a Quality-of-Service (QoS) policy in accordance with the QoS DoDIN Technical Profile.

Vulnerability discussion

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.

Check content

Since PE routers have classified traffic types and set DSCP values for packets received from CE routers, all P routers must be configured to use the configured or default Behavior Aggregate (BA) classifier on all interfaces as shown in the example below. PE routers must be configured to use the same BA classifier on all core-facing interfaces. 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; } } } 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

Configure all P router interfaces and PE core-facing 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

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.

Powered by sagemincer