L2TP QOS
From JuniperClue
This configuration is applied on the LNS
Configuration Task
- First, create a variable that will be used by RADIUS to define the total [max] bandwidth of an individual subscriber;
hostname(config)#qos-parameter-define max-subscriber-bandwidth
hostname(config-qos-parameter-define)#controlled-interface-type l2tp-session
hostname(config-qos-parameter-define)#instance-interface-type l2tp-session
hostname(config-qos-parameter-define)#subscriber-interface-type l2tp-session
hostname(config-qos-parameter-define)#range X Y (x=lower value; y=upper value - optional)
hostname(config-qos-parameter-define)#exit
- Second, create a variable that will be used by RADIUS to define the amount of G.711 calls;
hostname(config)#qos-parameter-define number-of-lines
hostname(config-qos-parameter-define)#controlled-interface-type l2tp-session
hostname(config-qos-parameter-define)#instance-interface-type l2tp-session
hostname(config-qos-parameter-define)#subscriber-interface-type l2tp-session
hostname(config-qos-parameter-define)#range X Y (x=lower value; y=upper value - optional)
hostname(config-qos-parameter-define)#exit
- Next, create the schedulers for the variables above;
hostname(config)#scheduler-profile subscriber-voice
hostname(config-scheduler-profile)#shaping-rate number-of-lines * 150000
hostname(config-scheduler-profile)#strict-priority
hostname(config-scheduler-profile)#exit
hostname(config)#scheduler-profile subscriber
hostname(config-scheduler-profile)#shared-shaping-rate max-subscriber-bandwidth auto
hostname(config-scheduler-profile)#exit
- Create the Traffic-Class and Traffic-Class-Group
hostname(config)#traffic-class VoIP_Traffic_Class
hostname(config-traffic-class)#fabric-strict-priority
hostname(config-traffic-class)#exit
hostname(config)#traffic-class-group EF auto-strict-priority
hostname(config-traffic-class-group)#traffic-class VoIP_Traffic_Class
hostname(config-traffic-class-group)#exit
- Create the Classifier-list, IP Policy-list and apply it to the subscriber profile;
hostname(config)#ip classifier-list VoIP_Server udp host X.X.X.X range 5060 5061 any <--SIP Packets
hostname(config)#ip classifier-list VoIP_Server ip X.X.X.X X.X.X.X any <--RTP Packets
hostname(config)#ip policy-list VoIP_Packets
hostname(config-policy-list)#classifier-group VoIP_Server
hostname(config-policy-list-classifier-group)#traffic-class VoIP_Traffic_Class
hostname(config-policy-list-classifier-group)#exit
hostname(config)#profile Profile_Name_Here
hostname(config-profile)#ip policy output VoIP_Packets statistics enabled
hostname(config-profile)#exit
- Next, remove the best-effort ip queue to the server-default qos-profile to enable L2TP Session queues (as per documentation);
hostname(config)#qos-profile server-default
hostname(config-qos-profile)#no ip queue traffic-class best-effort
- Finally, create the QOS-Profile for the L2TP Sessions that will be assigned via RADIUS (or can be to intf);
hostname(config)#qos-profile l2tpQOSprofile1
hostname(config-qos-profile)#l2tp-session queue traffic-class VoIP_Traffic_Class scheduler-profile subscriber-voice
hostname(config-qos-profile)#l2tp-session queue traffic-class best-effort scheduler-profile subscriber
hostname(config-qos-profile)#exit
RADIUS Attributes used: [26-82] Qos-Parameters
Attribute [26-82]
number-of-lines = X <-- Populate X with the number of G.711 VoIP accounts for the sub.
max-subscriber-bandwidth = Y <-- Populate Y with the download bandwidth of the sub.
Attribute [26-26]
Qos-profile-name = l2tpQOSprofile1
Apply above via RADIUS to any subscriber that requires shaping or apply profile to ATM interface which affects ALL subscribers
