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JUEX-RT-000360 - The Juniper P router must be configured to enforce a Quality-of-Service (QoS) policy in accordance with the QoS GIG Technical Profile.

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Information

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.

NOTE: Nessus has provided the target output to assist in reviewing the benchmark to ensure target compliance.

Solution

Configure a QoS policy on each router in accordance with the QoS GIG Technical Profile.

set class-of-service classifiers dscp <classifier name> forwarding-class NC loss-priority low code-points 110000
set class-of-service classifiers dscp <classifier name> forwarding-class EF loss-priority high code-points 101101
set class-of-service classifiers dscp <classifier name> forwarding-class EF loss-priority high code-points 101111
set class-of-service classifiers dscp <classifier name> forwarding-class EF loss-priority high code-points 100101
set class-of-service classifiers dscp <classifier name> forwarding-class EF loss-priority high code-points 100111
set class-of-service classifiers dscp <classifier name> forwarding-class EF loss-priority high code-points 110011
set class-of-service classifiers dscp <classifier name> forwarding-class EF loss-priority low code-points 101000
set class-of-service classifiers dscp <classifier name> forwarding-class EF loss-priority low code-points 100000
set class-of-service classifiers dscp <classifier name> forwarding-class EF loss-priority low code-points 101001
set class-of-service classifiers dscp <classifier name> forwarding-class EF loss-priority low code-points 101011
set class-of-service classifiers dscp <classifier name> forwarding-class EF loss-priority low code-points 100001
set class-of-service classifiers dscp <classifier name> forwarding-class EF loss-priority low code-points 100011
set class-of-service classifiers dscp <classifier name> forwarding-class EF loss-priority low code-points 110001
set class-of-service classifiers dscp <classifier name> forwarding-class AF41 loss-priority high code-points 100010
set class-of-service classifiers dscp <classifier name> forwarding-class AF41 loss-priority high code-points 100100
set class-of-service classifiers dscp <classifier name> forwarding-class AF41 loss-priority high code-points 100110
set class-of-service classifiers dscp <classifier name> forwarding-class AF41 loss-priority low code-points 011000
set class-of-service classifiers dscp <classifier name> forwarding-class AF41 loss-priority low code-points 101110
set class-of-service classifiers dscp <classifier name> forwarding-class AF41 loss-priority low code-points 011100
set class-of-service classifiers dscp <classifier name> forwarding-class AF41 loss-priority low code-points 011110
set class-of-service classifiers dscp <classifier name> forwarding-class AF31 loss-priority high code-points 011101
set class-of-service classifiers dscp <classifier name> forwarding-class AF31 loss-priority high code-points 011111
set class-of-service classifiers dscp <classifier name> forwarding-class AF31 loss-priority high code-points 011010
set class-of-service classifiers dscp <classifier name> forwarding-class AF31 loss-priority high code-points 010101
set class-of-service classifiers dscp <classifier name> forwarding-class AF31 loss-priority high code-points 010111
set class-of-service classifiers dscp <classifier name> forwarding-class AF31 loss-priority high code-points 010010
set class-of-service classifiers dscp <classifier name> forwarding-class AF31 loss-priority high code-points 001101
set class-of-service classifiers dscp <classifier name> forwarding-class AF31 loss-priority high code-points 001010
set class-of-service classifiers dscp <classifier name> forwarding-class AF31 loss-priority high code-points 010000
set class-of-service classifiers dscp <classifier name> forwarding-class AF31 loss-priority low code-points 001001
set class-of-service classifiers dscp <classifier name> forwarding-class AF31 loss-priority low code-points 001011
set class-of-service classifiers dscp <classifier name> forwarding-class AF31 loss-priority low code-points 010001
set class-of-service classifiers dscp <classifier name> forwarding-class AF31 loss-priority low code-points 010011
set class-of-service classifiers dscp <classifier name> forwarding-class AF31 loss-priority low code-points 011001
set class-of-service classifiers dscp <classifier name> forwarding-class AF31 loss-priority low code-points 011011
set class-of-service classifiers dscp <classifier name> forwarding-class BE loss-priority high code-points 000000
set class-of-service classifiers dscp <classifier name> forwarding-class Default loss-priority high code-points 001000
set class-of-service classifiers dscp <classifier name> forwarding-class dscp15 loss-priority high code-points 001111
Note: Some platforms apply DSCP values to both IPv4 and IPv6 traffic with a single classifier definition (as shown). Those platforms that support separating classifiers will require a 'dscp-ipv6' stanza.

set class-of-service host-outbound-traffic forwarding-class NC
set class-of-service host-outbound-traffic dscp-code-point 110000
set class-of-service shared-buffer ingress percent 50
set class-of-service shared-buffer ingress buffer-partition lossless percent 5
set class-of-service shared-buffer ingress buffer-partition lossless-headroom percent 0
set class-of-service shared-buffer ingress buffer-partition lossy percent 95
set class-of-service shared-buffer egress percent 100
set class-of-service shared-buffer egress buffer-partition lossless percent 50
set class-of-service shared-buffer egress buffer-partition lossy percent 45
set class-of-service shared-buffer egress buffer-partition multicast percent 5
Note: Some platforms only support shared-buffer percent, and cannot separate between ingress and egress. Not all devices require a shared-buffer stanza.

set class-of-service forwarding-classes class NC queue-num 7
set class-of-service forwarding-classes class EF queue-num 6
set class-of-service forwarding-classes class AF41 queue-num 5
set class-of-service forwarding-classes class AF31 queue-num 4
set class-of-service forwarding-classes class BE queue-num 0
set class-of-service forwarding-classes class Default queue-num 1
set class-of-service forwarding-classes class dscp15 queue-num 6

set class-of-service traffic-control-profiles <control profile name 1> scheduler-map <scheduler map name 1>
set class-of-service traffic-control-profiles <control profile name 1> shaping-rate percent 100
set class-of-service traffic-control-profiles <control profile name 2> scheduler-map <scheduler map name 2>
set class-of-service traffic-control-profiles <control profile name 2> guaranteed-rate percent 20

set class-of-service forwarding-class-sets <set name 1> class NC
set class-of-service forwarding-class-sets <set name 1> class EF
set class-of-service forwarding-class-sets <set name 1> class AF41
set class-of-service forwarding-class-sets <set name 1> class AF31
set class-of-service forwarding-class-sets <set name 1> class Default
set class-of-service forwarding-class-sets <set name 1> class dscp15
set class-of-service forwarding-class-sets <set name 2> class BE

set class-of-service interfaces <interface name> forwarding-class-set <set name 1> output-traffic-control-profile <control profile name 1>
set class-of-service interfaces <interface name> forwarding-class-set <set name 2> output-traffic-control-profile <control profile name 2>
set class-of-service interfaces <interface name> classifiers dscp <classifier name>
set class-of-service interfaces <interface name> rewrite-rules dscp <rewrite rule name>

set class-of-service rewrite-rules dscp <rewrite rule name> forwarding-class dscp15 loss-priority high code-point 101101
set class-of-service rewrite-rules dscp <rewrite rule name> forwarding-class EF loss-priority low code-point 110001
set class-of-service rewrite-rules dscp <rewrite rule name> forwarding-class AF41 loss-priority high code-point 100110
set class-of-service rewrite-rules dscp <rewrite rule name> forwarding-class NC loss-priority low code-point 110000
set class-of-service rewrite-rules dscp <rewrite rule name> forwarding-class AF31 loss-priority high code-point 010000
set class-of-service rewrite-rules dscp <rewrite rule name> forwarding-class Default loss-priority high code-point 001000

set class-of-service scheduler-maps <scheduler map name 1> forwarding-class NC scheduler NC
set class-of-service scheduler-maps <scheduler map name 1> forwarding-class EF scheduler EF
set class-of-service scheduler-maps <scheduler map name 1> forwarding-class AF41 scheduler AF41
set class-of-service scheduler-maps <scheduler map name 1> forwarding-class AF31 scheduler AF31
set class-of-service scheduler-maps <scheduler map name 1> forwarding-class Default scheduler Default
set class-of-service scheduler-maps <scheduler map name 2> forwarding-class BE scheduler BE

set class-of-service schedulers NC buffer-size percent 5
set class-of-service schedulers NC priority strict-high
set class-of-service schedulers EF shaping-rate percent 20
set class-of-service schedulers EF buffer-size percent 19
set class-of-service schedulers EF priority strict-high
set class-of-service schedulers AF41 shaping-rate percent 15
set class-of-service schedulers AF41 buffer-size percent 14
set class-of-service schedulers AF41 priority strict-high
set class-of-service schedulers AF31 shaping-rate percent 31
set class-of-service schedulers AF31 buffer-size percent 29
set class-of-service schedulers AF31 priority strict-high
set class-of-service schedulers BE transmit-rate percent 20
set class-of-service schedulers BE buffer-size percent 20
set class-of-service schedulers BE priority low
set class-of-service schedulers Default shaping-rate percent 10
set class-of-service schedulers Default buffer-size percent 9
set class-of-service schedulers Default priority strict-high

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Juniper_EX_Switches_Y24M01_STIG.zip

Item Details

References: CAT|III, CCI|CCI-001095, Rule-ID|SV-254008r844057_rule, STIG-ID|JUEX-RT-000360, Vuln-ID|V-254008

Plugin: Juniper

Control ID: 4c6234b69a66880134f1a1ab55fc199feb8e281fde4b80941cff03d36a8eae95