Configuring QoS

This following example displays packet classification using DSCP, EXP, protocol and destination IP address. The classification policy is then applied to the interface. For QoS on VPRN interfaces, similar configurations can be applied on the sap-ingress and sap-egress contexts within configure qos.

configure qos match-list ip-prefix-list “Peering-Core” prefix 10.10.10.0/24
configure qos network "Peering-Ingress-QoS" policy-id 10
configure qos network "Peering-Ingress-QoS" ingress { dscp be fc be }
configure qos network "Peering-Ingress-QoS" ingress { dscp be profile out }
configure qos network "Peering-Ingress-QoS" ingress { lsp-exp 6 fc h1 }
configure qos network "Peering-Ingress-QoS" ingress { lsp-exp 6 profile in }
configure qos network "Peering-Ingress-QoS" ingress { ip-criteria entry 10 match protocol tcp }
configure qos network "Peering-Ingress-QoS" ingress { ip-criteria entry 10 match dst-ip ip-prefix-list "Peering-Core" }
configure qos network "Peering-Ingress-QoS" ingress { ip-criteria entry 10 action fc ef }

configure router "Base" interface "To-Peering-LAN" qos { network-policy "Peering-Ingress-QoS" }

The following example displays a sample configuration for the queuing step in the QoS packet flow. The queuing policy is applied to the FP context of the card.

configure qos network-queue "Peering-Queue" fc be { queue 1 }
configure qos network-queue "Peering-Queue" fc ef { queue 6 }
configure qos network-queue "Peering-Queue" fc h1 { queue 7 }
configure qos network-queue "Peering-Queue" fc nc { queue 8 }
configure qos network-queue "Peering-Queue" queue 1 { mbs 50.0 }
configure qos network-queue "Peering-Queue" queue 1 { rate pir 90 }
configure qos network-queue "Peering-Queue" queue 1 { rate cir 10 }
configure qos network-queue "Peering-Queue" queue 6 { cbs 70.0 }
configure qos network-queue "Peering-Queue" queue 6 { mbs 100.0 }
configure qos network-queue "Peering-Queue" queue 6 { rate pir 100 }
configure qos network-queue "Peering-Queue" queue 6 { rate cir 100 }
configure qos network-queue "Peering-Queue" queue 7 { rate pir 100 }
configure qos network-queue "Peering-Queue" queue 7 { rate cir 100 }
configure qos network-queue "Peering-Queue" queue 8 { rate pir 10 }
configure qos network-queue "Peering-Queue" queue 8 { rate cir 10 }

configure card 1 fp 1 { ingress network queue-policy "Peering-Queue" }

The following example displays a simple port-based scheduler that typically meets the requirements for a peering network. SR OS also supports hierarchical schedulers and slope policies.

After the scheduler policy is defined, it is applied to the physical port context.

configure qos port-scheduler-policy "Peer-Scheduler" max-rate 100000000
configure qos port-scheduler-policy "Peer-Scheduler" level 1 { rate pir 90 }
configure qos port-scheduler-policy "Peer-Scheduler" level 1 { rate cir 10 }
configure qos port-scheduler-policy "Peer-Scheduler" level 6 { rate pir max }
configure qos port-scheduler-policy "Peer-Scheduler" level 6 { rate cir max }
configure qos port-scheduler-policy "Peer-Scheduler" level 7 { rate pir max }
configure qos port-scheduler-policy "Peer-Scheduler" level 7 { rate cir max }
configure qos port-scheduler-policy "Peer-Scheduler" level 8 { rate pir max }
configure qos port-scheduler-policy "Peer-Scheduler" level 8 { rate cir max }

configure port 1/1/c1/1 ethernet { egress port-scheduler-policy policy-name "Peer-Scheduler" }

Re-marking configuration is done inside the same policy as the classification and is applied under the interface level as shown in the following example.

configure qos network "Peering-Ingress-QoS" egress { fc be lsp-exp-in-profile 0 }
configure qos network "Peering-Ingress-QoS" egress { fc be lsp-exp-out-profile 0 }
configure qos network "Peering-Ingress-QoS" egress { fc ef dscp-in-profile af41 }
configure qos network "Peering-Ingress-QoS" egress { fc h1 lsp-exp-in-profile 6 }

configure router "Base" interface "To-Peering-LAN" qos { network-policy "Peering-Ingress-QoS" }